1 /*
2  * Copyright (c) 2012 Oleksandr Tymoshenko <[email protected]>
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/bus.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
35 #include <sys/malloc.h>
36 #include <sys/rman.h>
37 #include <sys/fbio.h>
38 #include <sys/consio.h>
39 #include <sys/kdb.h>
40 
41 #include <machine/bus.h>
42 #include <machine/cpu.h>
43 #include <machine/intr.h>
44 
45 #include <dev/fdt/fdt_common.h>
46 #include <dev/ofw/openfirm.h>
47 #include <dev/ofw/ofw_bus.h>
48 #include <dev/ofw/ofw_bus_subr.h>
49 
50 #include <dev/fb/fbreg.h>
51 #include <dev/syscons/syscons.h>
52 
53 #include <machine/bus.h>
54 #include <machine/fdt.h>
55 
56 #define	PL110_VENDOR_ARM926PXP	1
57 
58 #define	MEM_SYS		0
59 #define	MEM_CLCD	1
60 #define MEM_REGIONS	2
61 
62 #define	SYS_CLCD		0x00
63 #define		SYS_CLCD_CLCDID_SHIFT	0x08
64 #define		SYS_CLCD_CLCDID_MASK	0x1f
65 #define		SYS_CLCD_PWR3V5VSWITCH	(1 << 4)
66 #define		SYS_CLCD_VDDPOSSWITCH 	(1 << 3)
67 #define		SYS_CLCD_NLCDIOON  	(1 << 2)
68 #define		SYS_CLCD_LCD_MODE_MASK	0x03
69 
70 #define	CLCD_MODE_RGB888	0x0
71 #define	CLCD_MODE_RGB555	0x01
72 #define	CLCD_MODE_RBG565	0x02
73 #define	CLCD_MODE_RGB565	0x03
74 
75 #define	CLCDC_TIMING0		0x00
76 #define	CLCDC_TIMING1		0x04
77 #define	CLCDC_TIMING2		0x08
78 #define	CLCDC_TIMING3		0x0C
79 #define	CLCDC_TIMING3		0x0C
80 #define	CLCDC_UPBASE		0x10
81 #define	CLCDC_LPBASE		0x14
82 #ifdef PL110_VENDOR_ARM926PXP
83 #define	CLCDC_CONTROL		0x18
84 #define	CLCDC_IMSC		0x1C
85 #else
86 #define	CLCDC_IMSC		0x18
87 #define	CLCDC_CONTROL		0x1C
88 #endif
89 #define		CONTROL_WATERMARK	(1 << 16)
90 #define		CONTROL_VCOMP_VS	(0 << 12)
91 #define		CONTROL_VCOMP_BP	(1 << 12)
92 #define		CONTROL_VCOMP_SAV	(2 << 12)
93 #define		CONTROL_VCOMP_FP	(3 << 12)
94 #define		CONTROL_PWR		(1 << 11)
95 #define		CONTROL_BEPO		(1 << 10)
96 #define		CONTROL_BEBO		(1 << 9)
97 #define		CONTROL_BGR		(1 << 8)
98 #define		CONTROL_DUAL		(1 << 7)
99 #define		CONTROL_MONO8		(1 << 6)
100 #define		CONTROL_TFT		(1 << 5)
101 #define		CONTROL_BW		(1 << 4)
102 #define		CONTROL_BPP1		(0x00 << 1)
103 #define		CONTROL_BPP2		(0x01 << 1)
104 #define		CONTROL_BPP4		(0x02 << 1)
105 #define		CONTROL_BPP8		(0x03 << 1)
106 #define		CONTROL_BPP16		(0x04 << 1)
107 #define		CONTROL_BPP24		(0x05 << 1)
108 #define		CONTROL_EN	(1 << 0)
109 #define	CLCDC_RIS		0x20
110 #define	CLCDC_MIS		0x24
111 #define		INTR_MBERR		(1 << 4)
112 #define		INTR_VCOMP		(1 << 3)
113 #define		INTR_LNB		(1 << 2)
114 #define		INTR_FUF		(1 << 1)
115 #define	CLCDC_ICR		0x28
116 
117 #ifdef DEBUG
118 #define dprintf(fmt, args...) do { printf("%s(): ", __func__);   \
119     printf(fmt,##args); } while (0)
120 #else
121 #define dprintf(fmt, args...)
122 #endif
123 
124 #define	versatile_clcdc_sys_read_4(sc, reg)	\
125 	bus_read_4((sc)->mem_res[MEM_SYS], (reg))
126 #define	versatile_clcdc_sys_write_4(sc, reg, val)	\
127 	bus_write_4((sc)->mem_res[MEM_SYS], (reg), (val))
128 
129 #define	versatile_clcdc_read_4(sc, reg)	\
130 	bus_read_4((sc)->mem_res[MEM_CLCD], (reg))
131 #define	versatile_clcdc_write_4(sc, reg, val)	\
132 	bus_write_4((sc)->mem_res[MEM_CLCD], (reg), (val))
133 
134 struct versatile_clcdc_softc {
135 	struct resource*	mem_res[MEM_REGIONS];
136 
137 	struct mtx		mtx;
138 
139 	int			width;
140 	int			height;
141 	int			mode;
142 
143 	bus_dma_tag_t		dma_tag;
144 	bus_dmamap_t		dma_map;
145 	bus_addr_t		fb_phys;
146 	uint8_t			*fb_base;
147 
148 };
149 
150 struct video_adapter_softc {
151 	/* Videoadpater part */
152 	video_adapter_t	va;
153 	int		console;
154 
155 	intptr_t	fb_addr;
156 	unsigned int	fb_size;
157 
158 	unsigned int	height;
159 	unsigned int	width;
160 	unsigned int	depth;
161 	unsigned int	stride;
162 
163 	unsigned int	xmargin;
164 	unsigned int	ymargin;
165 
166 	unsigned char	*font;
167 	int		initialized;
168 };
169 
170 struct argb {
171 	uint8_t		a;
172 	uint8_t		r;
173 	uint8_t		g;
174 	uint8_t		b;
175 };
176 
177 static struct argb versatilefb_palette[16] = {
178 	{0x00, 0x00, 0x00, 0x00},
179 	{0x00, 0x00, 0x00, 0xaa},
180 	{0x00, 0x00, 0xaa, 0x00},
181 	{0x00, 0x00, 0xaa, 0xaa},
182 	{0x00, 0xaa, 0x00, 0x00},
183 	{0x00, 0xaa, 0x00, 0xaa},
184 	{0x00, 0xaa, 0x55, 0x00},
185 	{0x00, 0xaa, 0xaa, 0xaa},
186 	{0x00, 0x55, 0x55, 0x55},
187 	{0x00, 0x55, 0x55, 0xff},
188 	{0x00, 0x55, 0xff, 0x55},
189 	{0x00, 0x55, 0xff, 0xff},
190 	{0x00, 0xff, 0x55, 0x55},
191 	{0x00, 0xff, 0x55, 0xff},
192 	{0x00, 0xff, 0xff, 0x55},
193 	{0x00, 0xff, 0xff, 0xff}
194 };
195 
196 /* mouse pointer from dev/syscons/scgfbrndr.c */
197 static u_char mouse_pointer[16] = {
198         0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
199         0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
200 };
201 
202 #define FB_WIDTH		640
203 #define FB_HEIGHT		480
204 #define FB_DEPTH		16
205 
206 #define	VERSATILE_FONT_HEIGHT	16
207 
208 static struct video_adapter_softc va_softc;
209 
210 static struct resource_spec versatile_clcdc_mem_spec[] = {
211 	{ SYS_RES_MEMORY, 0, RF_ACTIVE },
212 	{ SYS_RES_MEMORY, 1, RF_ACTIVE },
213 	{ -1, 0, 0 }
214 };
215 
216 static int versatilefb_configure(int);
217 static void versatilefb_update_margins(video_adapter_t *adp);
218 
219 static void
220 versatile_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
221 {
222 	bus_addr_t *addr;
223 
224 	if (err)
225 		return;
226 
227 	addr = (bus_addr_t*)arg;
228 	*addr = segs[0].ds_addr;
229 }
230 
231 static int
232 versatile_clcdc_probe(device_t dev)
233 {
234 
235 	if (!ofw_bus_status_okay(dev))
236 		return (ENXIO);
237 
238 	if (ofw_bus_is_compatible(dev, "arm,pl110")) {
239 		device_set_desc(dev, "PL110 CLCD controller");
240 		return (BUS_PROBE_DEFAULT);
241 	}
242 
243 	return (ENXIO);
244 }
245 
246 static int
247 versatile_clcdc_attach(device_t dev)
248 {
249 	struct versatile_clcdc_softc *sc = device_get_softc(dev);
250 	struct video_adapter_softc *va_sc = &va_softc;
251 	int err;
252 	uint32_t reg;
253 	int clcdid;
254 	int dma_size;
255 
256 	/* Request memory resources */
257 	err = bus_alloc_resources(dev, versatile_clcdc_mem_spec,
258 		sc->mem_res);
259 	if (err) {
260 		device_printf(dev, "Error: could not allocate memory resources\n");
261 		return (ENXIO);
262 	}
263 
264 	reg = versatile_clcdc_sys_read_4(sc, SYS_CLCD);
265 	clcdid = (reg >> SYS_CLCD_CLCDID_SHIFT) & SYS_CLCD_CLCDID_MASK;
266 	switch (clcdid) {
267 		case 31:
268 			device_printf(dev, "QEMU VGA 640x480\n");
269 			sc->width = 640;
270 			sc->height = 480;
271 			break;
272 		default:
273 			device_printf(dev, "Unsupported: %d\n", clcdid);
274 			goto fail;
275 	}
276 
277 	reg &= ~SYS_CLCD_LCD_MODE_MASK;
278 	reg |= CLCD_MODE_RGB565;
279 	sc->mode = CLCD_MODE_RGB565;
280 	versatile_clcdc_sys_write_4(sc, SYS_CLCD, reg);
281 	dma_size = sc->width*sc->height*2;
282 
283 	/*
284 	 * Power on LCD
285 	 */
286 	reg |= SYS_CLCD_PWR3V5VSWITCH | SYS_CLCD_NLCDIOON;
287 	versatile_clcdc_sys_write_4(sc, SYS_CLCD, reg);
288 
289 	/*
290 	 * XXX: hardcoded timing for VGA. For other modes/panels
291 	 * we need to keep table of timing register values
292 	 */
293 	/*
294 	 * XXX: set SYS_OSC1
295 	 */
296 	versatile_clcdc_write_4(sc, CLCDC_TIMING0, 0x3F1F3F9C);
297 	versatile_clcdc_write_4(sc, CLCDC_TIMING1, 0x090B61DF);
298 	versatile_clcdc_write_4(sc, CLCDC_TIMING2, 0x067F1800);
299 	/* XXX: timing 3? */
300 
301 	/*
302 	 * Now allocate framebuffer memory
303 	 */
304 	err = bus_dma_tag_create(
305 	    bus_get_dma_tag(dev),
306 	    4, 0,		/* alignment, boundary */
307 	    BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
308 	    BUS_SPACE_MAXADDR,		/* highaddr */
309 	    NULL, NULL,			/* filter, filterarg */
310 	    dma_size, 1,		/* maxsize, nsegments */
311 	    dma_size, 0,		/* maxsegsize, flags */
312 	    NULL, NULL,			/* lockfunc, lockarg */
313 	    &sc->dma_tag);
314 
315 	err = bus_dmamem_alloc(sc->dma_tag, (void **)&sc->fb_base,
316 	    0, &sc->dma_map);
317 	if (err) {
318 		device_printf(dev, "cannot allocate framebuffer\n");
319 		goto fail;
320 	}
321 
322 	err = bus_dmamap_load(sc->dma_tag, sc->dma_map, sc->fb_base,
323 	    dma_size, versatile_fb_dmamap_cb, &sc->fb_phys, BUS_DMA_NOWAIT);
324 
325 	if (err) {
326 		device_printf(dev, "cannot load DMA map\n");
327 		goto fail;
328 	}
329 
330 	/* Make sure it's blank */
331 	memset(sc->fb_base, 0x00, dma_size);
332 
333 	versatile_clcdc_write_4(sc, CLCDC_UPBASE, sc->fb_phys);
334 
335 	err = (sc_attach_unit(device_get_unit(dev),
336 	    device_get_flags(dev) | SC_AUTODETECT_KBD));
337 
338 	if (err) {
339 		device_printf(dev, "failed to attach syscons\n");
340 		goto fail;
341 	}
342 
343 	/*
344 	 * XXX: hardcoded for VGA
345 	 */
346 	reg = CONTROL_VCOMP_BP | CONTROL_TFT | CONTROL_BGR | CONTROL_EN;
347 	reg |= CONTROL_BPP16;
348 	versatile_clcdc_write_4(sc, CLCDC_CONTROL, reg);
349 	DELAY(20);
350 	reg |= CONTROL_PWR;
351 	versatile_clcdc_write_4(sc, CLCDC_CONTROL, reg);
352 
353 	va_sc->fb_addr = (vm_offset_t)sc->fb_base;
354 	va_sc->fb_size = dma_size;
355 	va_sc->width = sc->width;
356 	va_sc->height = sc->height;
357 	va_sc->depth = 16;
358 	va_sc->stride = sc->width * 2;
359 	versatilefb_update_margins(&va_sc->va);
360 
361 	return (0);
362 
363 fail:
364 	if (sc->fb_base)
365 		bus_dmamem_free(sc->dma_tag, sc->fb_base, sc->dma_map);
366 	if (sc->dma_tag)
367 		bus_dma_tag_destroy(sc->dma_tag);
368 	return (err);
369 }
370 
371 static device_method_t versatile_clcdc_methods[] = {
372 	DEVMETHOD(device_probe,		versatile_clcdc_probe),
373 	DEVMETHOD(device_attach,	versatile_clcdc_attach),
374 
375 	DEVMETHOD_END
376 };
377 
378 static driver_t versatile_clcdc_driver = {
379 	"clcdc",
380 	versatile_clcdc_methods,
381 	sizeof(struct versatile_clcdc_softc),
382 };
383 
384 static devclass_t versatile_clcdc_devclass;
385 
386 DRIVER_MODULE(versatile_clcdc, simplebus, versatile_clcdc_driver, versatile_clcdc_devclass, 0, 0);
387 
388 /*
389  * Video driver routines and glue.
390  */
391 static vi_probe_t		versatilefb_probe;
392 static vi_init_t		versatilefb_init;
393 static vi_get_info_t		versatilefb_get_info;
394 static vi_query_mode_t		versatilefb_query_mode;
395 static vi_set_mode_t		versatilefb_set_mode;
396 static vi_save_font_t		versatilefb_save_font;
397 static vi_load_font_t		versatilefb_load_font;
398 static vi_show_font_t		versatilefb_show_font;
399 static vi_save_palette_t	versatilefb_save_palette;
400 static vi_load_palette_t	versatilefb_load_palette;
401 static vi_set_border_t		versatilefb_set_border;
402 static vi_save_state_t		versatilefb_save_state;
403 static vi_load_state_t		versatilefb_load_state;
404 static vi_set_win_org_t		versatilefb_set_win_org;
405 static vi_read_hw_cursor_t	versatilefb_read_hw_cursor;
406 static vi_set_hw_cursor_t	versatilefb_set_hw_cursor;
407 static vi_set_hw_cursor_shape_t	versatilefb_set_hw_cursor_shape;
408 static vi_blank_display_t	versatilefb_blank_display;
409 static vi_mmap_t		versatilefb_mmap;
410 static vi_ioctl_t		versatilefb_ioctl;
411 static vi_clear_t		versatilefb_clear;
412 static vi_fill_rect_t		versatilefb_fill_rect;
413 static vi_bitblt_t		versatilefb_bitblt;
414 static vi_diag_t		versatilefb_diag;
415 static vi_save_cursor_palette_t	versatilefb_save_cursor_palette;
416 static vi_load_cursor_palette_t	versatilefb_load_cursor_palette;
417 static vi_copy_t		versatilefb_copy;
418 static vi_putp_t		versatilefb_putp;
419 static vi_putc_t		versatilefb_putc;
420 static vi_puts_t		versatilefb_puts;
421 static vi_putm_t		versatilefb_putm;
422 
423 static video_switch_t versatilefbvidsw = {
424 	.probe			= versatilefb_probe,
425 	.init			= versatilefb_init,
426 	.get_info		= versatilefb_get_info,
427 	.query_mode		= versatilefb_query_mode,
428 	.set_mode		= versatilefb_set_mode,
429 	.save_font		= versatilefb_save_font,
430 	.load_font		= versatilefb_load_font,
431 	.show_font		= versatilefb_show_font,
432 	.save_palette		= versatilefb_save_palette,
433 	.load_palette		= versatilefb_load_palette,
434 	.set_border		= versatilefb_set_border,
435 	.save_state		= versatilefb_save_state,
436 	.load_state		= versatilefb_load_state,
437 	.set_win_org		= versatilefb_set_win_org,
438 	.read_hw_cursor		= versatilefb_read_hw_cursor,
439 	.set_hw_cursor		= versatilefb_set_hw_cursor,
440 	.set_hw_cursor_shape	= versatilefb_set_hw_cursor_shape,
441 	.blank_display		= versatilefb_blank_display,
442 	.mmap			= versatilefb_mmap,
443 	.ioctl			= versatilefb_ioctl,
444 	.clear			= versatilefb_clear,
445 	.fill_rect		= versatilefb_fill_rect,
446 	.bitblt			= versatilefb_bitblt,
447 	.diag			= versatilefb_diag,
448 	.save_cursor_palette	= versatilefb_save_cursor_palette,
449 	.load_cursor_palette	= versatilefb_load_cursor_palette,
450 	.copy			= versatilefb_copy,
451 	.putp			= versatilefb_putp,
452 	.putc			= versatilefb_putc,
453 	.puts			= versatilefb_puts,
454 	.putm			= versatilefb_putm,
455 };
456 
457 VIDEO_DRIVER(versatilefb, versatilefbvidsw, versatilefb_configure);
458 
459 static vr_init_t clcdr_init;
460 static vr_clear_t clcdr_clear;
461 static vr_draw_border_t clcdr_draw_border;
462 static vr_draw_t clcdr_draw;
463 static vr_set_cursor_t clcdr_set_cursor;
464 static vr_draw_cursor_t clcdr_draw_cursor;
465 static vr_blink_cursor_t clcdr_blink_cursor;
466 static vr_set_mouse_t clcdr_set_mouse;
467 static vr_draw_mouse_t clcdr_draw_mouse;
468 
469 /*
470  * We use our own renderer; this is because we must emulate a hardware
471  * cursor.
472  */
473 static sc_rndr_sw_t clcdrend = {
474 	clcdr_init,
475 	clcdr_clear,
476 	clcdr_draw_border,
477 	clcdr_draw,
478 	clcdr_set_cursor,
479 	clcdr_draw_cursor,
480 	clcdr_blink_cursor,
481 	clcdr_set_mouse,
482 	clcdr_draw_mouse
483 };
484 
485 RENDERER(versatilefb, 0, clcdrend, gfb_set);
486 RENDERER_MODULE(versatilefb, gfb_set);
487 
488 static void
489 clcdr_init(scr_stat* scp)
490 {
491 }
492 
493 static void
494 clcdr_clear(scr_stat* scp, int c, int attr)
495 {
496 }
497 
498 static void
499 clcdr_draw_border(scr_stat* scp, int color)
500 {
501 }
502 
503 static void
504 clcdr_draw(scr_stat* scp, int from, int count, int flip)
505 {
506 	video_adapter_t* adp = scp->sc->adp;
507 	int i, c, a;
508 
509 	if (!flip) {
510 		/* Normal printing */
511 		vidd_puts(adp, from, (uint16_t*)sc_vtb_pointer(&scp->vtb, from), count);
512 	} else {
513 		/* This is for selections and such: invert the color attribute */
514 		for (i = count; i-- > 0; ++from) {
515 			c = sc_vtb_getc(&scp->vtb, from);
516 			a = sc_vtb_geta(&scp->vtb, from) >> 8;
517 			vidd_putc(adp, from, c, (a >> 4) | ((a & 0xf) << 4));
518 		}
519 	}
520 }
521 
522 static void
523 clcdr_set_cursor(scr_stat* scp, int base, int height, int blink)
524 {
525 }
526 
527 static void
528 clcdr_draw_cursor(scr_stat* scp, int off, int blink, int on, int flip)
529 {
530 	video_adapter_t* adp = scp->sc->adp;
531 	struct video_adapter_softc *sc;
532 	int row, col;
533 	uint8_t *addr;
534 	int i,j;
535 
536 	sc = (struct video_adapter_softc *)adp;
537 
538 	if (scp->curs_attr.height <= 0)
539 		return;
540 
541 	if (sc->fb_addr == 0)
542 		return;
543 
544 	if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
545 		return;
546 
547 	/* calculate the coordinates in the video buffer */
548 	row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
549 	col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
550 
551 	addr = (uint8_t *)sc->fb_addr
552 	    + (row + sc->ymargin)*(sc->stride)
553 	    + (sc->depth/8) * (col + sc->xmargin);
554 
555 	/* our cursor consists of simply inverting the char under it */
556 	for (i = 0; i < adp->va_info.vi_cheight; i++) {
557 		for (j = 0; j < adp->va_info.vi_cwidth; j++) {
558 
559 			addr[2*j] ^= 0xff;
560 			addr[2*j + 1] ^= 0xff;
561 		}
562 
563 		addr += sc->stride;
564 	}
565 }
566 
567 static void
568 clcdr_blink_cursor(scr_stat* scp, int at, int flip)
569 {
570 }
571 
572 static void
573 clcdr_set_mouse(scr_stat* scp)
574 {
575 }
576 
577 static void
578 clcdr_draw_mouse(scr_stat* scp, int x, int y, int on)
579 {
580 	vidd_putm(scp->sc->adp, x, y, mouse_pointer, 0xffffffff, 16, 8);
581 
582 }
583 
584 static uint16_t versatilefb_static_window[ROW*COL];
585 extern u_char dflt_font_16[];
586 
587 /*
588  * Update videoadapter settings after changing resolution
589  */
590 static void
591 versatilefb_update_margins(video_adapter_t *adp)
592 {
593 	struct video_adapter_softc *sc;
594 	video_info_t *vi;
595 
596 	sc = (struct video_adapter_softc *)adp;
597 	vi = &adp->va_info;
598 
599 	sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
600 	sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
601 }
602 
603 static int
604 versatilefb_configure(int flags)
605 {
606 	struct video_adapter_softc *va_sc;
607 
608 	va_sc = &va_softc;
609 
610 	if (va_sc->initialized)
611 		return (0);
612 
613 	va_sc->width = FB_WIDTH;
614 	va_sc->height = FB_HEIGHT;
615 	va_sc->depth = FB_DEPTH;
616 
617 	versatilefb_init(0, &va_sc->va, 0);
618 
619 	va_sc->initialized = 1;
620 
621 	return (0);
622 }
623 
624 static int
625 versatilefb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
626 {
627 
628 	return (0);
629 }
630 
631 static int
632 versatilefb_init(int unit, video_adapter_t *adp, int flags)
633 {
634 	struct video_adapter_softc *sc;
635 	video_info_t *vi;
636 
637 	sc = (struct video_adapter_softc *)adp;
638 	vi = &adp->va_info;
639 
640 	vid_init_struct(adp, "versatilefb", -1, unit);
641 
642 	sc->font = dflt_font_16;
643 	vi->vi_cheight = VERSATILE_FONT_HEIGHT;
644 	vi->vi_cwidth = 8;
645 
646 	vi->vi_width = sc->width/8;
647 	vi->vi_height = sc->height/vi->vi_cheight;
648 
649 	/*
650 	 * Clamp width/height to syscons maximums
651 	 */
652 	if (vi->vi_width > COL)
653 		vi->vi_width = COL;
654 	if (vi->vi_height > ROW)
655 		vi->vi_height = ROW;
656 
657 	sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
658 	sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
659 
660 
661 	adp->va_window = (vm_offset_t) versatilefb_static_window;
662 	adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
663 
664 	vid_register(&sc->va);
665 
666 	return (0);
667 }
668 
669 static int
670 versatilefb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
671 {
672 	bcopy(&adp->va_info, info, sizeof(*info));
673 	return (0);
674 }
675 
676 static int
677 versatilefb_query_mode(video_adapter_t *adp, video_info_t *info)
678 {
679 	return (0);
680 }
681 
682 static int
683 versatilefb_set_mode(video_adapter_t *adp, int mode)
684 {
685 	return (0);
686 }
687 
688 static int
689 versatilefb_save_font(video_adapter_t *adp, int page, int size, int width,
690     u_char *data, int c, int count)
691 {
692 	return (0);
693 }
694 
695 static int
696 versatilefb_load_font(video_adapter_t *adp, int page, int size, int width,
697     u_char *data, int c, int count)
698 {
699 	struct video_adapter_softc *sc = (struct video_adapter_softc *)adp;
700 
701 	sc->font = data;
702 
703 	return (0);
704 }
705 
706 static int
707 versatilefb_show_font(video_adapter_t *adp, int page)
708 {
709 	return (0);
710 }
711 
712 static int
713 versatilefb_save_palette(video_adapter_t *adp, u_char *palette)
714 {
715 	return (0);
716 }
717 
718 static int
719 versatilefb_load_palette(video_adapter_t *adp, u_char *palette)
720 {
721 	return (0);
722 }
723 
724 static int
725 versatilefb_set_border(video_adapter_t *adp, int border)
726 {
727 	return (versatilefb_blank_display(adp, border));
728 }
729 
730 static int
731 versatilefb_save_state(video_adapter_t *adp, void *p, size_t size)
732 {
733 	return (0);
734 }
735 
736 static int
737 versatilefb_load_state(video_adapter_t *adp, void *p)
738 {
739 	return (0);
740 }
741 
742 static int
743 versatilefb_set_win_org(video_adapter_t *adp, off_t offset)
744 {
745 	return (0);
746 }
747 
748 static int
749 versatilefb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
750 {
751 	*col = *row = 0;
752 
753 	return (0);
754 }
755 
756 static int
757 versatilefb_set_hw_cursor(video_adapter_t *adp, int col, int row)
758 {
759 
760 	return (0);
761 }
762 
763 static int
764 versatilefb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
765     int celsize, int blink)
766 {
767 	return (0);
768 }
769 
770 static int
771 versatilefb_blank_display(video_adapter_t *adp, int mode)
772 {
773 
774 	struct video_adapter_softc *sc;
775 
776 	sc = (struct video_adapter_softc *)adp;
777 	if (sc && sc->fb_addr)
778 		memset((void*)sc->fb_addr, 0, sc->fb_size);
779 
780 	return (0);
781 }
782 
783 static int
784 versatilefb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
785     int prot, vm_memattr_t *memattr)
786 {
787 	struct video_adapter_softc *sc;
788 
789 	sc = (struct video_adapter_softc *)adp;
790 
791 	/*
792 	 * This might be a legacy VGA mem request: if so, just point it at the
793 	 * framebuffer, since it shouldn't be touched
794 	 */
795 	if (offset < sc->stride*sc->height) {
796 		*paddr = sc->fb_addr + offset;
797 		return (0);
798 	}
799 
800 	return (EINVAL);
801 }
802 
803 static int
804 versatilefb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
805 {
806 
807 	return (0);
808 }
809 
810 static int
811 versatilefb_clear(video_adapter_t *adp)
812 {
813 
814 	return (versatilefb_blank_display(adp, 0));
815 }
816 
817 static int
818 versatilefb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
819 {
820 
821 	return (0);
822 }
823 
824 static int
825 versatilefb_bitblt(video_adapter_t *adp, ...)
826 {
827 
828 	return (0);
829 }
830 
831 static int
832 versatilefb_diag(video_adapter_t *adp, int level)
833 {
834 
835 	return (0);
836 }
837 
838 static int
839 versatilefb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
840 {
841 
842 	return (0);
843 }
844 
845 static int
846 versatilefb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
847 {
848 
849 	return (0);
850 }
851 
852 static int
853 versatilefb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
854 {
855 
856 	return (0);
857 }
858 
859 static int
860 versatilefb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
861     int size, int bpp, int bit_ltor, int byte_ltor)
862 {
863 
864 	return (0);
865 }
866 
867 static int
868 versatilefb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
869 {
870 	struct video_adapter_softc *sc;
871 	int row;
872 	int col;
873 	int i, j, k;
874 	uint8_t *addr;
875 	u_char *p;
876 	uint8_t fg, bg, color;
877 	uint16_t rgb;
878 
879 	sc = (struct video_adapter_softc *)adp;
880 
881 	if (sc->fb_addr == 0)
882 		return (0);
883 
884 	if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
885 		return (0);
886 
887 	row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
888 	col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
889 	p = sc->font + c*VERSATILE_FONT_HEIGHT;
890 	addr = (uint8_t *)sc->fb_addr
891 	    + (row + sc->ymargin)*(sc->stride)
892 	    + (sc->depth/8) * (col + sc->xmargin);
893 
894 	fg = a & 0xf ;
895 	bg = (a >> 4) & 0xf;
896 
897 	for (i = 0; i < VERSATILE_FONT_HEIGHT; i++) {
898 		for (j = 0, k = 7; j < 8; j++, k--) {
899 			if ((p[i] & (1 << k)) == 0)
900 				color = bg;
901 			else
902 				color = fg;
903 
904 			switch (sc->depth) {
905 			case 16:
906 				rgb = (versatilefb_palette[color].r >> 3) << 11;
907 				rgb |= (versatilefb_palette[color].g >> 2) << 5;
908 				rgb |= (versatilefb_palette[color].b >> 3);
909 				addr[2*j] = rgb & 0xff;
910 				addr[2*j + 1] = (rgb >> 8) & 0xff;
911 			default:
912 				/* Not supported yet */
913 				break;
914 			}
915 		}
916 
917 		addr += (sc->stride);
918 	}
919 
920         return (0);
921 }
922 
923 static int
924 versatilefb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
925 {
926 	int i;
927 
928 	for (i = 0; i < len; i++)
929 		versatilefb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
930 
931 	return (0);
932 }
933 
934 static int
935 versatilefb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
936     uint32_t pixel_mask, int size, int width)
937 {
938 
939 	return (0);
940 }
941 
942 /*
943  * Define a stub keyboard driver in case one hasn't been
944  * compiled into the kernel
945  */
946 #include <sys/kbio.h>
947 #include <dev/kbd/kbdreg.h>
948 
949 static int dummy_kbd_configure(int flags);
950 
951 keyboard_switch_t bcmdummysw;
952 
953 static int
954 dummy_kbd_configure(int flags)
955 {
956 
957 	return (0);
958 }
959 KEYBOARD_DRIVER(bcmdummy, bcmdummysw, dummy_kbd_configure);
960