xref: /illumos-gate/usr/src/uts/i86pc/io/gfx_private/gfxp_bitmap.c (revision 66582b606a8194f7f3ba5b3a3a6dca5b0d346361)
1 /*
2  * This file and its contents are supplied under the terms of the
3  * Common Development and Distribution License ("CDDL"), version 1.0.
4  * You may only use this file in accordance with the terms of version
5  * 1.0 of the CDDL.
6  *
7  * A full copy of the text of the CDDL should have accompanied this
8  * source.  A copy of the CDDL is also available via the Internet at
9  * http://www.illumos.org/license/CDDL.
10  */
11 
12 /*
13  * Copyright 2016 Toomas Soome <tsoome@me.com>
14  */
15 
16 /*
17  * Framebuffer based console support.
18  *
19  * Missing (no particular order):
20  * memory barriers
21  * shadow buffering
22  * copyin for userspace calls and then polled io split.
23  * callbacks for hw blt() and others?
24  */
25 #include <sys/types.h>
26 #include <sys/visual_io.h>
27 #include <sys/fbio.h>
28 #include <sys/ddi.h>
29 #include <sys/kd.h>
30 #include <sys/sunddi.h>
31 #include <sys/rgb.h>
32 #include <sys/gfx_private.h>
33 #include "gfxp_fb.h"
34 
35 #define	MYNAME	"gfxp_bitmap"
36 
37 static ddi_device_acc_attr_t dev_attr = {
38 	DDI_DEVICE_ATTR_V0,
39 	DDI_NEVERSWAP_ACC,
40 	DDI_MERGING_OK_ACC
41 };
42 
43 /* default structure for FBIOGATTR ioctl */
44 static struct fbgattr bitmap_attr =  {
45 /*	real_type	owner */
46 	FBTYPE_MEMCOLOR, 0,
47 /* fbtype: type		h  w  depth cms  size */
48 	{ FBTYPE_MEMCOLOR, 0, 0, 0, 0, 0 },
49 /* fbsattr: flags emu_type	dev_specific */
50 	{ 0, FBTYPE_MEMCOLOR, { 0 } },
51 /*	emu_types */
52 	{ -1 }
53 };
54 
55 static struct vis_identifier gfxp_bitmap_ident = { "illumos_fb" };
56 
57 static void bitmap_copy_fb(struct gfxp_fb_softc *, uint8_t *, uint8_t *);
58 static int bitmap_kdsetmode(struct gfxp_fb_softc *, int);
59 static int bitmap_devinit(struct gfxp_fb_softc *, struct vis_devinit *);
60 static void	bitmap_cons_copy(struct gfxp_fb_softc *, struct vis_conscopy *);
61 static void	bitmap_cons_display(struct gfxp_fb_softc *,
62     struct vis_consdisplay *);
63 static int	bitmap_cons_clear(struct gfxp_fb_softc *,
64     struct vis_consclear *);
65 static void	bitmap_cons_cursor(struct gfxp_fb_softc *,
66     struct vis_conscursor *);
67 static void	bitmap_polled_copy(struct vis_polledio_arg *,
68     struct vis_conscopy *);
69 static void	bitmap_polled_display(struct vis_polledio_arg *,
70     struct vis_consdisplay *);
71 static void	bitmap_polled_cursor(struct vis_polledio_arg *,
72     struct vis_conscursor *);
73 static int	bitmap_suspend(struct gfxp_fb_softc *softc);
74 static void	bitmap_resume(struct gfxp_fb_softc *softc);
75 static int	bitmap_devmap(dev_t dev, devmap_cookie_t dhp, offset_t off,
76     size_t len, size_t *maplen, uint_t model, void *ptr);
77 
78 static struct gfxp_ops gfxp_bitmap_ops = {
79 	.ident = &gfxp_bitmap_ident,
80 	.kdsetmode = bitmap_kdsetmode,
81 	.devinit = bitmap_devinit,
82 	.cons_copy = bitmap_cons_copy,
83 	.cons_display = bitmap_cons_display,
84 	.cons_cursor = bitmap_cons_cursor,
85 	.cons_clear = bitmap_cons_clear,
86 	.suspend = bitmap_suspend,
87 	.resume = bitmap_resume,
88 	.devmap = bitmap_devmap
89 };
90 
91 void
92 gfxp_bm_register_fbops(gfxp_fb_softc_ptr_t ptr, struct gfxp_blt_ops *ops)
93 {
94 	struct gfxp_fb_softc *softc = (struct gfxp_fb_softc *)ptr;
95 
96 	if (softc != NULL) {
97 		softc->blt_ops.blt = ops->blt;
98 		softc->blt_ops.copy = ops->copy;
99 		softc->blt_ops.clear = ops->clear;
100 		softc->blt_ops.setmode = ops->setmode;
101 	}
102 }
103 
104 void
105 gfxp_bm_getfb_info(gfxp_fb_softc_ptr_t ptr, struct gfxp_bm_fb_info *fbip)
106 {
107 	struct gfxp_fb_softc *softc = (struct gfxp_fb_softc *)ptr;
108 
109 	switch (softc->fb_type) {
110 	case GFXP_BITMAP:
111 		fbip->xres = softc->console->fb.screen.x;
112 		fbip->yres = softc->console->fb.screen.y;
113 		fbip->bpp = softc->console->fb.bpp;
114 		fbip->depth = softc->console->fb.depth;
115 		break;
116 	case GFXP_VGATEXT:
117 		/*
118 		 * By current knowledge, DRM can not cope with text mode
119 		 * and the VGA is disabled. The proper approach here
120 		 * is to set all values to 0. See the drm_getfb_size() and
121 		 * the i915_gem_init() how the size is used.
122 		 */
123 		fbip->xres = 0;
124 		fbip->yres = 0;
125 		fbip->bpp = 0;
126 		fbip->depth = 0;
127 		break;
128 	}
129 }
130 
131 int
132 gfxp_bm_attach(dev_info_t *devi __unused, struct gfxp_fb_softc *softc)
133 {
134 	softc->polledio.display = bitmap_polled_display;
135 	softc->polledio.copy = bitmap_polled_copy;
136 	softc->polledio.cursor = bitmap_polled_cursor;
137 	softc->gfxp_ops = &gfxp_bitmap_ops;
138 	softc->fbgattr = &bitmap_attr;
139 	softc->silent = 0;
140 
141 	return (DDI_SUCCESS);
142 }
143 
144 int
145 gfxp_bm_detach(dev_info_t *devi __unused, struct gfxp_fb_softc *softc)
146 {
147 	if (softc == NULL || softc->console == NULL)
148 		return (DDI_SUCCESS);
149 
150 	if (softc->console->fb.fb_size != 0) {
151 		gfxp_unmap_kernel_space((gfxp_kva_t)softc->console->fb.fb,
152 		    softc->console->fb.fb_size);
153 		fb_info.fb = NULL;
154 		kmem_free(softc->console->fb.shadow_fb,
155 		    softc->console->fb.fb_size);
156 		softc->console->fb.shadow_fb = NULL;
157 	}
158 	return (DDI_SUCCESS);
159 }
160 
161 static void
162 bitmap_kdsettext(struct gfxp_fb_softc *softc)
163 {
164 	bitmap_copy_fb(softc, softc->console->fb.shadow_fb,
165 	    softc->console->fb.fb);
166 }
167 
168 static void
169 bitmap_kdsetgraphics(struct gfxp_fb_softc *softc __unused)
170 {
171 	/* we have the copy of fb content in shadow_fb */
172 }
173 
174 static int
175 bitmap_suspend(struct gfxp_fb_softc *softc __unused)
176 {
177 	/* we have the copy of fb content in shadow_fb */
178 	return (DDI_SUCCESS);
179 }
180 
181 static void
182 bitmap_resume(struct gfxp_fb_softc *softc)
183 {
184 	bitmap_kdsettext(softc);
185 }
186 
187 static int
188 bitmap_kdsetmode(struct gfxp_fb_softc *softc, int mode)
189 {
190 	switch (mode) {
191 	case KD_TEXT:
192 		if (softc->blt_ops.setmode != NULL)
193 			if (softc->blt_ops.setmode(KD_TEXT) != 0)
194 				return (EIO);
195 
196 		bitmap_kdsettext(softc);
197 		break;
198 	case KD_GRAPHICS:
199 		bitmap_kdsetgraphics(softc);
200 		if (softc->blt_ops.setmode != NULL)
201 			if (softc->blt_ops.setmode(KD_GRAPHICS) != 0) {
202 				bitmap_kdsettext(softc);
203 				return (EIO);
204 			}
205 		break;
206 	case KD_RESETTEXT:
207 		/*
208 		 * In order to avoid racing with a starting X server,
209 		 * this needs to be a test and set that is performed in
210 		 * a single (softc->lock protected) ioctl into this driver.
211 		 */
212 		if (softc->mode == KD_TEXT && softc->silent == 1) {
213 			bitmap_kdsettext(softc);
214 		}
215 		mode = KD_TEXT;
216 		break;
217 	default:
218 		return (EINVAL);
219 	}
220 
221 	softc->mode = mode;
222 	return (0);
223 }
224 
225 /*
226  * Copy fb_info from early boot and set up the FB
227  */
228 static int
229 bitmap_setup_fb(struct gfxp_fb_softc *softc)
230 {
231 	size_t size;
232 	struct gfxfb_info *gfxfb_info;
233 
234 	softc->console = (union gfx_console *)&fb_info;
235 	size = ptob(btopr(fb_info.fb_size));
236 	softc->console->fb.fb_size = size;
237 	softc->console->fb.fb = (uint8_t *)gfxp_map_kernel_space(fb_info.paddr,
238 	    size, GFXP_MEMORY_WRITECOMBINED);
239 	if (softc->console->fb.fb == NULL)
240 		return (DDI_FAILURE);
241 
242 	softc->console->fb.shadow_fb = kmem_zalloc(size, KM_SLEEP);
243 
244 	bitmap_attr.fbtype.fb_height = fb_info.screen.y;
245 	bitmap_attr.fbtype.fb_width = fb_info.screen.x;
246 	bitmap_attr.fbtype.fb_depth = fb_info.depth;
247 	bitmap_attr.fbtype.fb_size = size;
248 	if (fb_info.depth == 32)
249 		bitmap_attr.fbtype.fb_cmsize = 1 << 24;
250 	else
251 		bitmap_attr.fbtype.fb_cmsize = 1 << fb_info.depth;
252 
253 	gfxfb_info = (struct gfxfb_info *)bitmap_attr.sattr.dev_specific;
254 	gfxfb_info->terminal_origin_x = fb_info.terminal_origin.x;
255 	gfxfb_info->terminal_origin_y = fb_info.terminal_origin.y;
256 	gfxfb_info->pitch = fb_info.pitch;
257 	gfxfb_info->font_width = fb_info.font_width;
258 	gfxfb_info->font_height = fb_info.font_height;
259 	gfxfb_info->red_mask_size = fb_info.rgb.red.size;
260 	gfxfb_info->red_field_position = fb_info.rgb.red.pos;
261 	gfxfb_info->green_mask_size = fb_info.rgb.green.size;
262 	gfxfb_info->green_field_position = fb_info.rgb.green.pos;
263 	gfxfb_info->blue_mask_size = fb_info.rgb.blue.size;
264 	gfxfb_info->blue_field_position = fb_info.rgb.blue.pos;
265 
266 	return (DDI_SUCCESS);
267 }
268 
269 static int
270 bitmap_devinit(struct gfxp_fb_softc *softc, struct vis_devinit *data)
271 {
272 	union gfx_console *console;
273 
274 	if (bitmap_setup_fb(softc) == DDI_FAILURE)
275 		return (1);
276 
277 	console = softc->console;
278 
279 	/* make sure we have current state of the screen */
280 	bitmap_copy_fb(softc, console->fb.fb, console->fb.shadow_fb);
281 
282 	/* initialize console instance */
283 	data->version = VIS_CONS_REV;
284 	data->width = console->fb.screen.x;
285 	data->height = console->fb.screen.y;
286 	data->linebytes = console->fb.pitch;
287 	data->color_map = boot_color_map;
288 	data->depth = console->fb.depth;
289 	data->mode = VIS_PIXEL;
290 	data->polledio = &softc->polledio;
291 #if 0
292 	data->modechg_cb;
293 	data->modechg_arg;
294 #endif
295 	return (0);
296 }
297 
298 /* Buffer to Buffer copy */
299 static void
300 bitmap_copy_fb(struct gfxp_fb_softc *softc, uint8_t *src, uint8_t *dst)
301 {
302 	uint32_t i, pitch, height;
303 
304 	pitch = softc->console->fb.pitch;
305 	height = softc->console->fb.screen.y;
306 
307 	for (i = 0; i < height; i++) {
308 		(void) memmove(dst + i * pitch, src + i * pitch, pitch);
309 	}
310 }
311 
312 static void
313 bitmap_cons_copy(struct gfxp_fb_softc *softc, struct vis_conscopy *ma)
314 {
315 	union gfx_console *console;
316 	uint32_t soffset, toffset;
317 	uint32_t width, height, pitch;
318 	uint8_t *src, *dst, *sdst;
319 	int i;
320 
321 	console = softc->console;
322 	soffset = ma->s_col * console->fb.bpp + ma->s_row * console->fb.pitch;
323 	toffset = ma->t_col * console->fb.bpp + ma->t_row * console->fb.pitch;
324 	src = console->fb.shadow_fb + soffset;
325 	dst = console->fb.fb + toffset;
326 	sdst = console->fb.shadow_fb + toffset;
327 	width = (ma->e_col - ma->s_col + 1) * console->fb.bpp;
328 	height = ma->e_row - ma->s_row + 1;
329 	pitch = console->fb.pitch;
330 
331 	if (toffset <= soffset) {
332 		for (i = 0; i < height; i++) {
333 			uint32_t increment = i * pitch;
334 			if (softc->mode == KD_TEXT) {
335 				(void) memmove(dst + increment,
336 				    src + increment, width);
337 			}
338 			(void) memmove(sdst + increment, src + increment,
339 			    width);
340 		}
341 	} else {
342 		for (i = height - 1; i >= 0; i--) {
343 			uint32_t increment = i * pitch;
344 			if (softc->mode == KD_TEXT) {
345 				(void) memmove(dst + increment,
346 				    src + increment, width);
347 			}
348 			(void) memmove(sdst + increment, src + increment,
349 			    width);
350 		}
351 	}
352 }
353 
354 /*
355  * Implements alpha blending for RGBA data, could use pixels for arguments,
356  * but byte stream seems more generic.
357  * The generic alpha blending is:
358  * blend = alpha * fg + (1.0 - alpha) * bg.
359  * Since our alpha is not from range [0..1], we scale appropriately.
360  */
361 static uint8_t
362 alpha_blend(uint8_t fg, uint8_t bg, uint8_t alpha)
363 {
364 	uint16_t blend, h, l;
365 
366 	/* trivial corner cases */
367 	if (alpha == 0)
368 		return (bg);
369 	if (alpha == 0xFF)
370 		return (fg);
371 	blend = (alpha * fg + (0xFF - alpha) * bg);
372 	/* Division by 0xFF */
373 	h = blend >> 8;
374 	l = blend & 0xFF;
375 	if (h + l >= 0xFF)
376 		h++;
377 	return (h);
378 }
379 
380 /* Copy memory to framebuffer or to memory. */
381 static void
382 bitmap_cpy(uint8_t *dst, uint8_t *src, uint32_t len, int bpp)
383 {
384 	uint32_t i;
385 	uint8_t a;
386 
387 	switch (bpp) {
388 	case 4:
389 		for (i = 0; i < len; i += bpp) {
390 			a = src[i+3];
391 			dst[i] = alpha_blend(src[i], dst[i], a);
392 			dst[i+1] = alpha_blend(src[i+1], dst[i+1], a);
393 			dst[i+2] = alpha_blend(src[i+2], dst[i+2], a);
394 			dst[i+3] = a;
395 		}
396 		break;
397 	default:
398 		(void) memcpy(dst, src, len);
399 		break;
400 	}
401 }
402 
403 static void
404 bitmap_cons_display(struct gfxp_fb_softc *softc, struct vis_consdisplay *da)
405 {
406 	union gfx_console *console;
407 	uint32_t size;		/* write size per scanline */
408 	uint8_t *fbp, *sfbp;	/* fb + calculated offset */
409 	int i;
410 
411 	console = softc->console;
412 	/* make sure we will not write past FB */
413 	if (da->col >= console->fb.screen.x ||
414 	    da->row >= console->fb.screen.y ||
415 	    da->col + da->width > console->fb.screen.x ||
416 	    da->row + da->height > console->fb.screen.y)
417 		return;
418 
419 	size = da->width * console->fb.bpp;
420 	fbp = console->fb.fb + da->col * console->fb.bpp +
421 	    da->row * console->fb.pitch;
422 	sfbp = console->fb.shadow_fb + da->col * console->fb.bpp +
423 	    da->row * console->fb.pitch;
424 
425 	/* write all scanlines in rectangle */
426 	for (i = 0; i < da->height; i++) {
427 		uint8_t *dest = fbp + i * console->fb.pitch;
428 		uint8_t *src = da->data + i * size;
429 		if (softc->mode == KD_TEXT)
430 			bitmap_cpy(dest, src, size, console->fb.bpp);
431 		dest = sfbp + i * console->fb.pitch;
432 		bitmap_cpy(dest, src, size, console->fb.bpp);
433 	}
434 }
435 
436 static int
437 bitmap_cons_clear(struct gfxp_fb_softc *softc, struct vis_consclear *ca)
438 {
439 	union gfx_console *console;
440 	uint8_t *fb, *sfb;
441 	uint16_t *fb16, *sfb16;
442 	uint32_t data, *fb32, *sfb32;
443 	int i, j, pitch;
444 
445 	console = softc->console;
446 	pitch = console->fb.pitch;
447 	data = boot_color_map(ca->bg_color);
448 	switch (console->fb.depth) {
449 	case 8:
450 		for (i = 0; i < console->fb.screen.y; i++) {
451 			if (softc->mode == KD_TEXT) {
452 				fb = console->fb.fb + i * pitch;
453 				(void) memset(fb, ca->bg_color, pitch);
454 			}
455 			fb = console->fb.shadow_fb + i * pitch;
456 			(void) memset(fb, ca->bg_color, pitch);
457 		}
458 		break;
459 	case 15:
460 	case 16:
461 		for (i = 0; i < console->fb.screen.y; i++) {
462 			fb16 = (uint16_t *)(console->fb.fb + i * pitch);
463 			sfb16 = (uint16_t *)(console->fb.shadow_fb + i * pitch);
464 			for (j = 0; j < console->fb.screen.x; j++) {
465 				if (softc->mode == KD_TEXT)
466 					fb16[j] = (uint16_t)data & 0xffff;
467 				sfb16[j] = (uint16_t)data & 0xffff;
468 			}
469 		}
470 		break;
471 	case 24:
472 		for (i = 0; i < console->fb.screen.y; i++) {
473 			fb = console->fb.fb + i * pitch;
474 			sfb = console->fb.shadow_fb + i * pitch;
475 			for (j = 0; j < pitch; j += 3) {
476 				if (softc->mode == KD_TEXT) {
477 					fb[j] = (data >> 16) & 0xff;
478 					fb[j+1] = (data >> 8) & 0xff;
479 					fb[j+2] = data & 0xff;
480 				}
481 
482 				sfb[j] = (data >> 16) & 0xff;
483 				sfb[j+1] = (data >> 8) & 0xff;
484 				sfb[j+2] = data & 0xff;
485 			}
486 		}
487 		break;
488 	case 32:
489 		for (i = 0; i < console->fb.screen.y; i++) {
490 			fb32 = (uint32_t *)(console->fb.fb + i * pitch);
491 			sfb32 = (uint32_t *)(console->fb.shadow_fb + i * pitch);
492 			for (j = 0; j < console->fb.screen.x; j++) {
493 				if (softc->mode == KD_TEXT)
494 					fb32[j] = data;
495 				sfb32[j] = data;
496 			}
497 		}
498 		break;
499 	}
500 
501 	return (0);
502 }
503 
504 static void
505 bitmap_display_cursor(struct gfxp_fb_softc *softc, struct vis_conscursor *ca)
506 {
507 	union gfx_console *console;
508 	uint32_t fg, bg, offset, size;
509 	uint32_t *fb32, *sfb32;
510 	uint16_t *fb16, *sfb16;
511 	uint8_t *fb8, *sfb8;
512 	int i, j, bpp, pitch;
513 
514 	console = softc->console;
515 	pitch = console->fb.pitch;
516 	bpp = console->fb.bpp;
517 	size = ca->width * bpp;
518 
519 	/*
520 	 * Build cursor image. We are building mirror image of data on
521 	 * frame buffer by (D xor FG) xor BG.
522 	 */
523 	offset = ca->col * bpp + ca->row * pitch;
524 	switch (console->fb.depth) {
525 	case 8:
526 		fg = ca->fg_color.mono;
527 		bg = ca->bg_color.mono;
528 		for (i = 0; i < ca->height; i++) {
529 			fb8 = console->fb.fb + offset + i * pitch;
530 			sfb8 = console->fb.shadow_fb + offset + i * pitch;
531 			for (j = 0; j < size; j += 1) {
532 				if (softc->mode == KD_TEXT) {
533 					fb8[j] = (fb8[j] ^ (fg & 0xff)) ^
534 					    (bg & 0xff);
535 				}
536 				sfb8[j] = (sfb8[j] ^ (fg & 0xff)) ^ (bg & 0xff);
537 			}
538 		}
539 		break;
540 	case 15:
541 	case 16:
542 		fg = ca->fg_color.sixteen[0] << 8;
543 		fg |= ca->fg_color.sixteen[1];
544 		bg = ca->bg_color.sixteen[0] << 8;
545 		bg |= ca->bg_color.sixteen[1];
546 		for (i = 0; i < ca->height; i++) {
547 			fb16 = (uint16_t *)
548 			    (console->fb.fb + offset + i * pitch);
549 			sfb16 = (uint16_t *)
550 			    (console->fb.shadow_fb + offset + i * pitch);
551 			for (j = 0; j < ca->width; j++) {
552 				if (softc->mode == KD_TEXT) {
553 					fb16[j] = (fb16[j] ^ (fg & 0xffff)) ^
554 					    (bg & 0xffff);
555 				}
556 				sfb16[j] = (sfb16[j] ^ (fg & 0xffff)) ^
557 				    (bg & 0xffff);
558 			}
559 		}
560 		break;
561 	case 24:
562 		fg = ca->fg_color.twentyfour[0] << console->fb.rgb.red.pos;
563 		fg |= ca->fg_color.twentyfour[1] << console->fb.rgb.green.pos;
564 		fg |= ca->fg_color.twentyfour[2] << console->fb.rgb.blue.pos;
565 		bg = ca->bg_color.twentyfour[0] << console->fb.rgb.red.pos;
566 		bg |= ca->bg_color.twentyfour[1] << console->fb.rgb.green.pos;
567 		bg |= ca->bg_color.twentyfour[2] << console->fb.rgb.blue.pos;
568 		for (i = 0; i < ca->height; i++) {
569 			fb8 = console->fb.fb + offset + i * pitch;
570 			sfb8 = console->fb.shadow_fb + offset + i * pitch;
571 			for (j = 0; j < size; j += 3) {
572 				if (softc->mode == KD_TEXT) {
573 					fb8[j] = (fb8[j] ^ ((fg >> 16) & 0xff))
574 					    ^ ((bg >> 16) & 0xff);
575 					fb8[j+1] =
576 					    (fb8[j+1] ^ ((fg >> 8) & 0xff)) ^
577 					    ((bg >> 8) & 0xff);
578 					fb8[j+2] = (fb8[j+2] ^ (fg & 0xff)) ^
579 					    (bg & 0xff);
580 				}
581 
582 				sfb8[j] = (sfb8[j] ^ ((fg >> 16) & 0xff)) ^
583 				    ((bg >> 16) & 0xff);
584 				sfb8[j+1] = (sfb8[j+1] ^ ((fg >> 8) & 0xff)) ^
585 				    ((bg >> 8) & 0xff);
586 				sfb8[j+2] = (sfb8[j+2] ^ (fg & 0xff)) ^
587 				    (bg & 0xff);
588 			}
589 		}
590 		break;
591 	case 32:
592 		fg = ca->fg_color.twentyfour[0] << console->fb.rgb.red.pos;
593 		fg |= ca->fg_color.twentyfour[1] << console->fb.rgb.green.pos;
594 		fg |= ca->fg_color.twentyfour[2] << console->fb.rgb.blue.pos;
595 		bg = ca->bg_color.twentyfour[0] << console->fb.rgb.red.pos;
596 		bg |= ca->bg_color.twentyfour[1] << console->fb.rgb.green.pos;
597 		bg |= ca->bg_color.twentyfour[2] << console->fb.rgb.blue.pos;
598 		for (i = 0; i < ca->height; i++) {
599 			fb32 = (uint32_t *)
600 			    (console->fb.fb + offset + i * pitch);
601 			sfb32 = (uint32_t *)
602 			    (console->fb.shadow_fb + offset + i * pitch);
603 			for (j = 0; j < ca->width; j++) {
604 				if (softc->mode == KD_TEXT)
605 					fb32[j] = (fb32[j] ^ fg) ^ bg;
606 				sfb32[j] = (sfb32[j] ^ fg) ^ bg;
607 			}
608 		}
609 		break;
610 	}
611 }
612 
613 static void
614 bitmap_cons_cursor(struct gfxp_fb_softc *softc, struct vis_conscursor *ca)
615 {
616 	union gfx_console *console = softc->console;
617 
618 	switch (ca->action) {
619 	case VIS_HIDE_CURSOR:
620 		bitmap_display_cursor(softc, ca);
621 		console->fb.cursor.visible = B_FALSE;
622 		break;
623 	case VIS_DISPLAY_CURSOR:
624 		/* keep track of cursor position for polled mode */
625 		console->fb.cursor.pos.x =
626 		    (ca->col - console->fb.terminal_origin.x) /
627 		    console->fb.font_width;
628 		console->fb.cursor.pos.y =
629 		    (ca->row - console->fb.terminal_origin.y) /
630 		    console->fb.font_height;
631 		console->fb.cursor.origin.x = ca->col;
632 		console->fb.cursor.origin.y = ca->row;
633 
634 		bitmap_display_cursor(softc, ca);
635 		console->fb.cursor.visible = B_TRUE;
636 		break;
637 	case VIS_GET_CURSOR:
638 		ca->row = console->fb.cursor.origin.y;
639 		ca->col = console->fb.cursor.origin.x;
640 		break;
641 	}
642 }
643 
644 static void
645 bitmap_polled_copy(struct vis_polledio_arg *arg, struct vis_conscopy *ca)
646 {
647 	struct gfxp_fb_softc *softc = (struct gfxp_fb_softc *)arg;
648 	bitmap_cons_copy(softc, ca);
649 }
650 
651 static void
652 bitmap_polled_display(struct vis_polledio_arg *arg, struct vis_consdisplay *da)
653 {
654 	struct gfxp_fb_softc *softc = (struct gfxp_fb_softc *)arg;
655 	bitmap_cons_display(softc, da);
656 }
657 
658 static void
659 bitmap_polled_cursor(struct vis_polledio_arg *arg, struct vis_conscursor *ca)
660 {
661 	struct gfxp_fb_softc *softc = (struct gfxp_fb_softc *)arg;
662 	bitmap_cons_cursor(softc, ca);
663 }
664 
665 /*
666  * Device mapping support. Should be possible to mmmap frame buffer
667  * to user space. Currently not working, mmap will receive -1 as pointer.
668  */
669 /*ARGSUSED*/
670 static int
671 bitmap_devmap(dev_t dev, devmap_cookie_t dhp, offset_t off,
672     size_t len, size_t *maplen, uint_t model, void *ptr)
673 {
674 	struct gfxp_fb_softc *softc = (struct gfxp_fb_softc *)ptr;
675 	union gfx_console *console;
676 	size_t length;
677 
678 	if (softc == NULL) {
679 		cmn_err(CE_WARN, "bitmap: Can't find softstate");
680 		return (ENXIO);
681 	}
682 
683 	console = softc->console;
684 
685 	if (off >= console->fb.fb_size) {
686 		cmn_err(CE_WARN, "bitmap: Can't map offset 0x%llx", off);
687 		return (ENXIO);
688 	}
689 
690 	if (off + len > console->fb.fb_size)
691 		length = console->fb.fb_size - off;
692 	else
693 		length = len;
694 
695 	gfxp_map_devmem(dhp, console->fb.paddr, length, &dev_attr);
696 
697 	*maplen = length;
698 
699 	return (0);
700 }
701