xref: /freebsd/sys/arm/broadcom/bcm2835/bcm2835_fb.c (revision 4ec234c813eed05c166859bba82c882e40826eb9)
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("$FreeBSD$");
29 
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/bio.h>
33 #include <sys/bus.h>
34 #include <sys/conf.h>
35 #include <sys/endian.h>
36 #include <sys/kernel.h>
37 #include <sys/kthread.h>
38 #include <sys/lock.h>
39 #include <sys/malloc.h>
40 #include <sys/module.h>
41 #include <sys/mutex.h>
42 #include <sys/queue.h>
43 #include <sys/resource.h>
44 #include <sys/rman.h>
45 #include <sys/time.h>
46 #include <sys/timetc.h>
47 #include <sys/fbio.h>
48 #include <sys/consio.h>
49 
50 #include <sys/kdb.h>
51 
52 #include <machine/bus.h>
53 #include <machine/cpu.h>
54 #include <machine/cpufunc.h>
55 #include <machine/resource.h>
56 #include <machine/intr.h>
57 
58 #include <dev/fdt/fdt_common.h>
59 #include <dev/ofw/ofw_bus.h>
60 #include <dev/ofw/ofw_bus_subr.h>
61 
62 #include <dev/fb/fbreg.h>
63 #include <dev/syscons/syscons.h>
64 
65 #include <arm/broadcom/bcm2835/bcm2835_mbox.h>
66 #include <arm/broadcom/bcm2835/bcm2835_vcbus.h>
67 
68 #include "mbox_if.h"
69 
70 #define	BCMFB_FONT_HEIGHT	16
71 
72 struct argb {
73 	uint8_t		a;
74 	uint8_t		r;
75 	uint8_t		g;
76 	uint8_t		b;
77 };
78 
79 static struct argb bcmfb_palette[16] = {
80 	{0x00, 0x00, 0x00, 0x00},
81 	{0x00, 0x00, 0x00, 0xaa},
82 	{0x00, 0x00, 0xaa, 0x00},
83 	{0x00, 0x00, 0xaa, 0xaa},
84 	{0x00, 0xaa, 0x00, 0x00},
85 	{0x00, 0xaa, 0x00, 0xaa},
86 	{0x00, 0xaa, 0x55, 0x00},
87 	{0x00, 0xaa, 0xaa, 0xaa},
88 	{0x00, 0x55, 0x55, 0x55},
89 	{0x00, 0x55, 0x55, 0xff},
90 	{0x00, 0x55, 0xff, 0x55},
91 	{0x00, 0x55, 0xff, 0xff},
92 	{0x00, 0xff, 0x55, 0x55},
93 	{0x00, 0xff, 0x55, 0xff},
94 	{0x00, 0xff, 0xff, 0x55},
95 	{0x00, 0xff, 0xff, 0xff}
96 };
97 
98 /* mouse pointer from dev/syscons/scgfbrndr.c */
99 static u_char mouse_pointer[16] = {
100         0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
101         0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
102 };
103 
104 #define FB_WIDTH		640
105 #define FB_HEIGHT		480
106 #define FB_DEPTH		24
107 
108 struct bcm_fb_config {
109 	uint32_t	xres;
110 	uint32_t	yres;
111 	uint32_t	vxres;
112 	uint32_t	vyres;
113 	uint32_t	pitch;
114 	uint32_t	bpp;
115 	uint32_t	xoffset;
116 	uint32_t	yoffset;
117 	/* Filled by videocore */
118 	uint32_t	base;
119 	uint32_t	screen_size;
120 };
121 
122 struct bcmsc_softc {
123 	device_t		dev;
124 	struct cdev *		cdev;
125 	struct mtx		mtx;
126 	bus_dma_tag_t		dma_tag;
127 	bus_dmamap_t		dma_map;
128 	struct bcm_fb_config*	fb_config;
129 	bus_addr_t		fb_config_phys;
130 	struct intr_config_hook	init_hook;
131 
132 };
133 
134 struct video_adapter_softc {
135 	/* Videoadpater part */
136 	video_adapter_t	va;
137 	int		console;
138 
139 	intptr_t	fb_addr;
140 	intptr_t	fb_paddr;
141 	unsigned int	fb_size;
142 
143 	unsigned int	height;
144 	unsigned int	width;
145 	unsigned int	depth;
146 	unsigned int	stride;
147 
148 	unsigned int	xmargin;
149 	unsigned int	ymargin;
150 
151 	unsigned char	*font;
152 	int		initialized;
153 };
154 
155 static struct bcmsc_softc *bcmsc_softc;
156 static struct video_adapter_softc va_softc;
157 
158 #define	bcm_fb_lock(_sc)	mtx_lock(&(_sc)->mtx)
159 #define	bcm_fb_unlock(_sc)	mtx_unlock(&(_sc)->mtx)
160 #define	bcm_fb_lock_assert(sc)	mtx_assert(&(_sc)->mtx, MA_OWNED)
161 
162 static int bcm_fb_probe(device_t);
163 static int bcm_fb_attach(device_t);
164 static void bcm_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err);
165 static void bcmfb_update_margins(video_adapter_t *adp);
166 static int bcmfb_configure(int);
167 
168 static void
169 bcm_fb_init(void *arg)
170 {
171 	struct bcmsc_softc *sc = arg;
172 	struct video_adapter_softc *va_sc = &va_softc;
173 	int err;
174 	volatile struct bcm_fb_config*	fb_config = sc->fb_config;
175 	phandle_t node;
176 	pcell_t cell;
177 	device_t mbox;
178 
179 	node = ofw_bus_get_node(sc->dev);
180 
181 	fb_config->xres = 0;
182 	fb_config->yres = 0;
183 	fb_config->bpp = 0;
184 
185 	if ((OF_getprop(node, "broadcom,width", &cell, sizeof(cell))) > 0)
186 		fb_config->xres = (int)fdt32_to_cpu(cell);
187 	if (fb_config->xres == 0)
188 		fb_config->xres = FB_WIDTH;
189 
190 	if ((OF_getprop(node, "broadcom,height", &cell, sizeof(cell))) > 0)
191 		fb_config->yres = (uint32_t)fdt32_to_cpu(cell);
192 	if (fb_config->yres == 0)
193 		fb_config->yres = FB_HEIGHT;
194 
195 	if ((OF_getprop(node, "broadcom,depth", &cell, sizeof(cell))) > 0)
196 		fb_config->bpp = (uint32_t)fdt32_to_cpu(cell);
197 	if (fb_config->bpp == 0)
198 		fb_config->bpp = FB_DEPTH;
199 
200 	fb_config->vxres = 0;
201 	fb_config->vyres = 0;
202 	fb_config->xoffset = 0;
203 	fb_config->yoffset = 0;
204 	fb_config->base = 0;
205 	fb_config->pitch = 0;
206 	fb_config->screen_size = 0;
207 
208 	bus_dmamap_sync(sc->dma_tag, sc->dma_map,
209 		BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
210 
211 	mbox = devclass_get_device(devclass_find("mbox"), 0);
212 	if (mbox) {
213 		MBOX_WRITE(mbox, BCM2835_MBOX_CHAN_FB, sc->fb_config_phys);
214 		MBOX_READ(mbox, BCM2835_MBOX_CHAN_FB, &err);
215 	}
216 	bus_dmamap_sync(sc->dma_tag, sc->dma_map,
217 		BUS_DMASYNC_POSTREAD);
218 
219 	if (fb_config->base != 0) {
220 		device_printf(sc->dev, "%dx%d(%dx%d@%d,%d) %dbpp\n",
221 			fb_config->xres, fb_config->yres,
222 			fb_config->vxres, fb_config->vyres,
223 			fb_config->xoffset, fb_config->yoffset,
224 			fb_config->bpp);
225 
226 
227 		device_printf(sc->dev, "pitch %d, base 0x%08x, screen_size %d\n",
228 			fb_config->pitch, fb_config->base,
229 			fb_config->screen_size);
230 
231 		va_sc->fb_addr = (intptr_t)pmap_mapdev(fb_config->base, fb_config->screen_size);
232 		va_sc->fb_paddr = fb_config->base;
233 		va_sc->fb_size = fb_config->screen_size;
234 		va_sc->depth = fb_config->bpp;
235 		va_sc->stride = fb_config->pitch;
236 
237 		va_sc->width = fb_config->xres;
238 		va_sc->height = fb_config->yres;
239 		bcmfb_update_margins(&va_sc->va);
240 	}
241 	else {
242 		device_printf(sc->dev, "Failed to set framebuffer info\n");
243 		return;
244 	}
245 
246 	config_intrhook_disestablish(&sc->init_hook);
247 }
248 
249 static int
250 bcm_fb_probe(device_t dev)
251 {
252 	int error = 0;
253 
254 	if (!ofw_bus_is_compatible(dev, "broadcom,bcm2835-fb"))
255 		return (ENXIO);
256 
257 	device_set_desc(dev, "BCM2835 framebuffer device");
258 
259 	error = sc_probe_unit(device_get_unit(dev),
260 	    device_get_flags(dev) | SC_AUTODETECT_KBD);
261 	if (error != 0)
262 		return (error);
263 
264 
265 	return (BUS_PROBE_DEFAULT);
266 }
267 
268 static int
269 bcm_fb_attach(device_t dev)
270 {
271 	struct bcmsc_softc *sc = device_get_softc(dev);
272 	int dma_size = sizeof(struct bcm_fb_config);
273 	int err;
274 
275 	if (bcmsc_softc)
276 		return (ENXIO);
277 
278 	bcmsc_softc = sc;
279 
280 	sc->dev = dev;
281 	mtx_init(&sc->mtx, "bcm2835fb", "fb", MTX_DEF);
282 
283 	err = bus_dma_tag_create(
284 	    bus_get_dma_tag(sc->dev),
285 	    PAGE_SIZE, 0,		/* alignment, boundary */
286 	    BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
287 	    BUS_SPACE_MAXADDR,		/* highaddr */
288 	    NULL, NULL,			/* filter, filterarg */
289 	    dma_size, 1,		/* maxsize, nsegments */
290 	    dma_size, 0,		/* maxsegsize, flags */
291 	    NULL, NULL,			/* lockfunc, lockarg */
292 	    &sc->dma_tag);
293 
294 	err = bus_dmamem_alloc(sc->dma_tag, (void **)&sc->fb_config,
295 	    0, &sc->dma_map);
296 	if (err) {
297 		device_printf(dev, "cannot allocate framebuffer\n");
298 		goto fail;
299 	}
300 
301 	err = bus_dmamap_load(sc->dma_tag, sc->dma_map, sc->fb_config,
302 	    dma_size, bcm_fb_dmamap_cb, &sc->fb_config_phys, BUS_DMA_NOWAIT);
303 
304 	if (err) {
305 		device_printf(dev, "cannot load DMA map\n");
306 		goto fail;
307 	}
308 
309 	err = (sc_attach_unit(device_get_unit(dev),
310 	    device_get_flags(dev) | SC_AUTODETECT_KBD));
311 
312 	if (err) {
313 		device_printf(dev, "failed to attach syscons\n");
314 		goto fail;
315 	}
316 
317 	/*
318 	 * We have to wait until interrupts are enabled.
319 	 * Mailbox relies on it to get data from VideoCore
320 	 */
321         sc->init_hook.ich_func = bcm_fb_init;
322         sc->init_hook.ich_arg = sc;
323 
324         if (config_intrhook_establish(&sc->init_hook) != 0) {
325 		device_printf(dev, "failed to establish intrhook\n");
326                 return (ENOMEM);
327 	}
328 
329 	return (0);
330 
331 fail:
332 	return (ENXIO);
333 }
334 
335 
336 static void
337 bcm_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
338 {
339 	bus_addr_t *addr;
340 
341 	if (err)
342 		return;
343 
344 	addr = (bus_addr_t*)arg;
345 	*addr = PHYS_TO_VCBUS(segs[0].ds_addr);
346 }
347 
348 static device_method_t bcm_fb_methods[] = {
349 	/* Device interface */
350 	DEVMETHOD(device_probe,		bcm_fb_probe),
351 	DEVMETHOD(device_attach,	bcm_fb_attach),
352 
353 	{ 0, 0 }
354 };
355 
356 static devclass_t bcm_fb_devclass;
357 
358 static driver_t bcm_fb_driver = {
359 	"fb",
360 	bcm_fb_methods,
361 	sizeof(struct bcmsc_softc),
362 };
363 
364 DRIVER_MODULE(bcm2835fb, nexus, bcm_fb_driver, bcm_fb_devclass, 0, 0);
365 
366 /*
367  * Video driver routines and glue.
368  */
369 static vi_probe_t		bcmfb_probe;
370 static vi_init_t		bcmfb_init;
371 static vi_get_info_t		bcmfb_get_info;
372 static vi_query_mode_t		bcmfb_query_mode;
373 static vi_set_mode_t		bcmfb_set_mode;
374 static vi_save_font_t		bcmfb_save_font;
375 static vi_load_font_t		bcmfb_load_font;
376 static vi_show_font_t		bcmfb_show_font;
377 static vi_save_palette_t	bcmfb_save_palette;
378 static vi_load_palette_t	bcmfb_load_palette;
379 static vi_set_border_t		bcmfb_set_border;
380 static vi_save_state_t		bcmfb_save_state;
381 static vi_load_state_t		bcmfb_load_state;
382 static vi_set_win_org_t		bcmfb_set_win_org;
383 static vi_read_hw_cursor_t	bcmfb_read_hw_cursor;
384 static vi_set_hw_cursor_t	bcmfb_set_hw_cursor;
385 static vi_set_hw_cursor_shape_t	bcmfb_set_hw_cursor_shape;
386 static vi_blank_display_t	bcmfb_blank_display;
387 static vi_mmap_t		bcmfb_mmap;
388 static vi_ioctl_t		bcmfb_ioctl;
389 static vi_clear_t		bcmfb_clear;
390 static vi_fill_rect_t		bcmfb_fill_rect;
391 static vi_bitblt_t		bcmfb_bitblt;
392 static vi_diag_t		bcmfb_diag;
393 static vi_save_cursor_palette_t	bcmfb_save_cursor_palette;
394 static vi_load_cursor_palette_t	bcmfb_load_cursor_palette;
395 static vi_copy_t		bcmfb_copy;
396 static vi_putp_t		bcmfb_putp;
397 static vi_putc_t		bcmfb_putc;
398 static vi_puts_t		bcmfb_puts;
399 static vi_putm_t		bcmfb_putm;
400 
401 static video_switch_t bcmfbvidsw = {
402 	.probe			= bcmfb_probe,
403 	.init			= bcmfb_init,
404 	.get_info		= bcmfb_get_info,
405 	.query_mode		= bcmfb_query_mode,
406 	.set_mode		= bcmfb_set_mode,
407 	.save_font		= bcmfb_save_font,
408 	.load_font		= bcmfb_load_font,
409 	.show_font		= bcmfb_show_font,
410 	.save_palette		= bcmfb_save_palette,
411 	.load_palette		= bcmfb_load_palette,
412 	.set_border		= bcmfb_set_border,
413 	.save_state		= bcmfb_save_state,
414 	.load_state		= bcmfb_load_state,
415 	.set_win_org		= bcmfb_set_win_org,
416 	.read_hw_cursor		= bcmfb_read_hw_cursor,
417 	.set_hw_cursor		= bcmfb_set_hw_cursor,
418 	.set_hw_cursor_shape	= bcmfb_set_hw_cursor_shape,
419 	.blank_display		= bcmfb_blank_display,
420 	.mmap			= bcmfb_mmap,
421 	.ioctl			= bcmfb_ioctl,
422 	.clear			= bcmfb_clear,
423 	.fill_rect		= bcmfb_fill_rect,
424 	.bitblt			= bcmfb_bitblt,
425 	.diag			= bcmfb_diag,
426 	.save_cursor_palette	= bcmfb_save_cursor_palette,
427 	.load_cursor_palette	= bcmfb_load_cursor_palette,
428 	.copy			= bcmfb_copy,
429 	.putp			= bcmfb_putp,
430 	.putc			= bcmfb_putc,
431 	.puts			= bcmfb_puts,
432 	.putm			= bcmfb_putm,
433 };
434 
435 VIDEO_DRIVER(bcmfb, bcmfbvidsw, bcmfb_configure);
436 
437 static vr_init_t bcmrend_init;
438 static vr_clear_t bcmrend_clear;
439 static vr_draw_border_t bcmrend_draw_border;
440 static vr_draw_t bcmrend_draw;
441 static vr_set_cursor_t bcmrend_set_cursor;
442 static vr_draw_cursor_t bcmrend_draw_cursor;
443 static vr_blink_cursor_t bcmrend_blink_cursor;
444 static vr_set_mouse_t bcmrend_set_mouse;
445 static vr_draw_mouse_t bcmrend_draw_mouse;
446 
447 /*
448  * We use our own renderer; this is because we must emulate a hardware
449  * cursor.
450  */
451 static sc_rndr_sw_t bcmrend = {
452 	bcmrend_init,
453 	bcmrend_clear,
454 	bcmrend_draw_border,
455 	bcmrend_draw,
456 	bcmrend_set_cursor,
457 	bcmrend_draw_cursor,
458 	bcmrend_blink_cursor,
459 	bcmrend_set_mouse,
460 	bcmrend_draw_mouse
461 };
462 
463 RENDERER(bcmfb, 0, bcmrend, gfb_set);
464 RENDERER_MODULE(bcmfb, gfb_set);
465 
466 static void
467 bcmrend_init(scr_stat* scp)
468 {
469 }
470 
471 static void
472 bcmrend_clear(scr_stat* scp, int c, int attr)
473 {
474 }
475 
476 static void
477 bcmrend_draw_border(scr_stat* scp, int color)
478 {
479 }
480 
481 static void
482 bcmrend_draw(scr_stat* scp, int from, int count, int flip)
483 {
484 	video_adapter_t* adp = scp->sc->adp;
485 	int i, c, a;
486 
487 	if (!flip) {
488 		/* Normal printing */
489 		vidd_puts(adp, from, (uint16_t*)sc_vtb_pointer(&scp->vtb, from), count);
490 	} else {
491 		/* This is for selections and such: invert the color attribute */
492 		for (i = count; i-- > 0; ++from) {
493 			c = sc_vtb_getc(&scp->vtb, from);
494 			a = sc_vtb_geta(&scp->vtb, from) >> 8;
495 			vidd_putc(adp, from, c, (a >> 4) | ((a & 0xf) << 4));
496 		}
497 	}
498 }
499 
500 static void
501 bcmrend_set_cursor(scr_stat* scp, int base, int height, int blink)
502 {
503 }
504 
505 static void
506 bcmrend_draw_cursor(scr_stat* scp, int off, int blink, int on, int flip)
507 {
508 	video_adapter_t* adp = scp->sc->adp;
509 	struct video_adapter_softc *sc;
510 	int row, col;
511 	uint8_t *addr;
512 	int i, j, bytes;
513 
514 	sc = (struct video_adapter_softc *)adp;
515 
516 	if (scp->curs_attr.height <= 0)
517 		return;
518 
519 	if (sc->fb_addr == 0)
520 		return;
521 
522 	if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
523 		return;
524 
525 	/* calculate the coordinates in the video buffer */
526 	row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
527 	col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
528 
529 	addr = (uint8_t *)sc->fb_addr
530 	    + (row + sc->ymargin)*(sc->stride)
531 	    + (sc->depth/8) * (col + sc->xmargin);
532 
533 	bytes = sc->depth/8;
534 
535 	/* our cursor consists of simply inverting the char under it */
536 	for (i = 0; i < adp->va_info.vi_cheight; i++) {
537 		for (j = 0; j < adp->va_info.vi_cwidth; j++) {
538 			switch (sc->depth) {
539 			case 32:
540 			case 24:
541 				addr[bytes*j + 2] ^= 0xff;
542 				/* FALLTHROUGH */
543 			case 16:
544 				addr[bytes*j + 1] ^= 0xff;
545 				addr[bytes*j] ^= 0xff;
546 				break;
547 			default:
548 				break;
549 			}
550 		}
551 
552 		addr += sc->stride;
553 	}
554 }
555 
556 static void
557 bcmrend_blink_cursor(scr_stat* scp, int at, int flip)
558 {
559 }
560 
561 static void
562 bcmrend_set_mouse(scr_stat* scp)
563 {
564 }
565 
566 static void
567 bcmrend_draw_mouse(scr_stat* scp, int x, int y, int on)
568 {
569 	vidd_putm(scp->sc->adp, x, y, mouse_pointer, 0xffffffff, 16, 8);
570 }
571 
572 static uint16_t bcmfb_static_window[ROW*COL];
573 extern u_char dflt_font_16[];
574 
575 /*
576  * Update videoadapter settings after changing resolution
577  */
578 static void
579 bcmfb_update_margins(video_adapter_t *adp)
580 {
581 	struct video_adapter_softc *sc;
582 	video_info_t *vi;
583 
584 	sc = (struct video_adapter_softc *)adp;
585 	vi = &adp->va_info;
586 
587 	sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
588 	sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
589 }
590 
591 static int
592 bcmfb_configure(int flags)
593 {
594 	struct video_adapter_softc *va_sc;
595 
596 	va_sc = &va_softc;
597 	phandle_t display, root;
598 	pcell_t cell;
599 
600 	if (va_sc->initialized)
601 		return (0);
602 
603 	va_sc->width = 0;
604 	va_sc->height = 0;
605 
606 	/*
607 	 * It seems there is no way to let syscons framework know
608 	 * that framebuffer resolution has changed. So just try
609 	 * to fetch data from FDT and go with defaults if failed
610 	 */
611 	root = OF_finddevice("/");
612 	if ((root != 0) &&
613 	    (display = fdt_find_compatible(root, "broadcom,bcm2835-fb", 1))) {
614 		if ((OF_getprop(display, "broadcom,width",
615 		    &cell, sizeof(cell))) > 0)
616 			va_sc->width = (int)fdt32_to_cpu(cell);
617 
618 		if ((OF_getprop(display, "broadcom,height",
619 		    &cell, sizeof(cell))) > 0)
620 			va_sc->height = (int)fdt32_to_cpu(cell);
621 	}
622 
623 	if (va_sc->width == 0)
624 		va_sc->width = FB_WIDTH;
625 	if (va_sc->height == 0)
626 		va_sc->height = FB_HEIGHT;
627 
628 	bcmfb_init(0, &va_sc->va, 0);
629 
630 	va_sc->initialized = 1;
631 
632 	return (0);
633 }
634 
635 static int
636 bcmfb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
637 {
638 
639 	return (0);
640 }
641 
642 static int
643 bcmfb_init(int unit, video_adapter_t *adp, int flags)
644 {
645 	struct video_adapter_softc *sc;
646 	video_info_t *vi;
647 
648 	sc = (struct video_adapter_softc *)adp;
649 	vi = &adp->va_info;
650 
651 	vid_init_struct(adp, "bcmfb", -1, unit);
652 
653 	sc->font = dflt_font_16;
654 	vi->vi_cheight = BCMFB_FONT_HEIGHT;
655 	vi->vi_cwidth = 8;
656 
657 	vi->vi_width = sc->width/8;
658 	vi->vi_height = sc->height/vi->vi_cheight;
659 
660 	/*
661 	 * Clamp width/height to syscons maximums
662 	 */
663 	if (vi->vi_width > COL)
664 		vi->vi_width = COL;
665 	if (vi->vi_height > ROW)
666 		vi->vi_height = ROW;
667 
668 	sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
669 	sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
670 
671 
672 	adp->va_window = (vm_offset_t) bcmfb_static_window;
673 	adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
674 
675 	vid_register(&sc->va);
676 
677 	return (0);
678 }
679 
680 static int
681 bcmfb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
682 {
683 	bcopy(&adp->va_info, info, sizeof(*info));
684 	return (0);
685 }
686 
687 static int
688 bcmfb_query_mode(video_adapter_t *adp, video_info_t *info)
689 {
690 	return (0);
691 }
692 
693 static int
694 bcmfb_set_mode(video_adapter_t *adp, int mode)
695 {
696 	return (0);
697 }
698 
699 static int
700 bcmfb_save_font(video_adapter_t *adp, int page, int size, int width,
701     u_char *data, int c, int count)
702 {
703 	return (0);
704 }
705 
706 static int
707 bcmfb_load_font(video_adapter_t *adp, int page, int size, int width,
708     u_char *data, int c, int count)
709 {
710 	struct video_adapter_softc *sc = (struct video_adapter_softc *)adp;
711 
712 	sc->font = data;
713 
714 	return (0);
715 }
716 
717 static int
718 bcmfb_show_font(video_adapter_t *adp, int page)
719 {
720 	return (0);
721 }
722 
723 static int
724 bcmfb_save_palette(video_adapter_t *adp, u_char *palette)
725 {
726 	return (0);
727 }
728 
729 static int
730 bcmfb_load_palette(video_adapter_t *adp, u_char *palette)
731 {
732 	return (0);
733 }
734 
735 static int
736 bcmfb_set_border(video_adapter_t *adp, int border)
737 {
738 	return (bcmfb_blank_display(adp, border));
739 }
740 
741 static int
742 bcmfb_save_state(video_adapter_t *adp, void *p, size_t size)
743 {
744 	return (0);
745 }
746 
747 static int
748 bcmfb_load_state(video_adapter_t *adp, void *p)
749 {
750 	return (0);
751 }
752 
753 static int
754 bcmfb_set_win_org(video_adapter_t *adp, off_t offset)
755 {
756 	return (0);
757 }
758 
759 static int
760 bcmfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
761 {
762 	*col = *row = 0;
763 
764 	return (0);
765 }
766 
767 static int
768 bcmfb_set_hw_cursor(video_adapter_t *adp, int col, int row)
769 {
770 	return (0);
771 }
772 
773 static int
774 bcmfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
775     int celsize, int blink)
776 {
777 	return (0);
778 }
779 
780 static int
781 bcmfb_blank_display(video_adapter_t *adp, int mode)
782 {
783 
784 	struct video_adapter_softc *sc;
785 
786 	sc = (struct video_adapter_softc *)adp;
787 	if (sc && sc->fb_addr)
788 		memset((void*)sc->fb_addr, 0, sc->fb_size);
789 
790 	return (0);
791 }
792 
793 static int
794 bcmfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
795     int prot, vm_memattr_t *memattr)
796 {
797 	struct video_adapter_softc *sc;
798 
799 	sc = (struct video_adapter_softc *)adp;
800 
801 	/*
802 	 * This might be a legacy VGA mem request: if so, just point it at the
803 	 * framebuffer, since it shouldn't be touched
804 	 */
805 	if (offset < sc->stride*sc->height) {
806 		*paddr = sc->fb_paddr + offset;
807 		return (0);
808 	}
809 
810 	return (EINVAL);
811 }
812 
813 static int
814 bcmfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
815 {
816 	struct video_adapter_softc *sc;
817 	struct fbtype *fb;
818 
819 	sc = (struct video_adapter_softc *)adp;
820 
821 	switch (cmd) {
822 	case FBIOGTYPE:
823 		fb = (struct fbtype *)data;
824 		fb->fb_type = FBTYPE_PCIMISC;
825 		fb->fb_height = sc->height;
826 		fb->fb_width = sc->width;
827 		fb->fb_depth = sc->depth;
828 		if (sc->depth <= 1 || sc->depth > 8)
829 			fb->fb_cmsize = 0;
830 		else
831 			fb->fb_cmsize = 1 << sc->depth;
832 		fb->fb_size = sc->fb_size;
833 		break;
834 	default:
835 		return (fb_commonioctl(adp, cmd, data));
836 	}
837 
838 	return (0);
839 }
840 
841 static int
842 bcmfb_clear(video_adapter_t *adp)
843 {
844 
845 	return (bcmfb_blank_display(adp, 0));
846 }
847 
848 static int
849 bcmfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
850 {
851 
852 	return (0);
853 }
854 
855 static int
856 bcmfb_bitblt(video_adapter_t *adp, ...)
857 {
858 
859 	return (0);
860 }
861 
862 static int
863 bcmfb_diag(video_adapter_t *adp, int level)
864 {
865 
866 	return (0);
867 }
868 
869 static int
870 bcmfb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
871 {
872 
873 	return (0);
874 }
875 
876 static int
877 bcmfb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
878 {
879 
880 	return (0);
881 }
882 
883 static int
884 bcmfb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
885 {
886 
887 	return (0);
888 }
889 
890 static int
891 bcmfb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
892     int size, int bpp, int bit_ltor, int byte_ltor)
893 {
894 
895 	return (0);
896 }
897 
898 static int
899 bcmfb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
900 {
901 	struct video_adapter_softc *sc;
902 	int row;
903 	int col;
904 	int i, j, k;
905 	uint8_t *addr;
906 	u_char *p;
907 	uint8_t fg, bg, color;
908 	uint16_t rgb;
909 
910 	sc = (struct video_adapter_softc *)adp;
911 
912 	if (sc->fb_addr == 0)
913 		return (0);
914 
915 	row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
916 	col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
917 	p = sc->font + c*BCMFB_FONT_HEIGHT;
918 	addr = (uint8_t *)sc->fb_addr
919 	    + (row + sc->ymargin)*(sc->stride)
920 	    + (sc->depth/8) * (col + sc->xmargin);
921 
922 	fg = a & 0xf ;
923 	bg = (a >> 4) & 0xf;
924 
925 	for (i = 0; i < BCMFB_FONT_HEIGHT; i++) {
926 		for (j = 0, k = 7; j < 8; j++, k--) {
927 			if ((p[i] & (1 << k)) == 0)
928 				color = bg;
929 			else
930 				color = fg;
931 
932 			switch (sc->depth) {
933 			case 32:
934 				addr[4*j+0] = bcmfb_palette[color].r;
935 				addr[4*j+1] = bcmfb_palette[color].g;
936 				addr[4*j+2] = bcmfb_palette[color].b;
937 				addr[4*j+3] = bcmfb_palette[color].a;
938 				break;
939 			case 24:
940 				addr[3*j] = bcmfb_palette[color].r;
941 				addr[3*j+1] = bcmfb_palette[color].g;
942 				addr[3*j+2] = bcmfb_palette[color].b;
943 				break;
944 			case 16:
945 				rgb = (bcmfb_palette[color].r >> 3) << 11;
946 				rgb |= (bcmfb_palette[color].g >> 2) << 5;
947 				rgb |= (bcmfb_palette[color].b >> 3);
948 				addr[2*j] = rgb & 0xff;
949 				addr[2*j + 1] = (rgb >> 8) & 0xff;
950 			default:
951 				/* Not supported yet */
952 				break;
953 			}
954 		}
955 
956 		addr += (sc->stride);
957 	}
958 
959         return (0);
960 }
961 
962 static int
963 bcmfb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
964 {
965 	int i;
966 
967 	for (i = 0; i < len; i++)
968 		bcmfb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
969 
970 	return (0);
971 }
972 
973 static int
974 bcmfb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
975     uint32_t pixel_mask, int size, int width)
976 {
977 
978 	return (0);
979 }
980 
981 /*
982  * Define a stub keyboard driver in case one hasn't been
983  * compiled into the kernel
984  */
985 #include <sys/kbio.h>
986 #include <dev/kbd/kbdreg.h>
987 
988 static int dummy_kbd_configure(int flags);
989 
990 keyboard_switch_t bcmdummysw;
991 
992 static int
993 dummy_kbd_configure(int flags)
994 {
995 
996 	return (0);
997 }
998 KEYBOARD_DRIVER(bcmdummy, bcmdummysw, dummy_kbd_configure);
999