vmwgfx_fb.c 19.6 KB
Newer Older
1 2 3
/**************************************************************************
 *
 * Copyright © 2007 David Airlie
S
Sinclair Yeh 已提交
4
 * Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 **************************************************************************/

29 30
#include <linux/export.h>

31
#include <drm/drmP.h>
32
#include "vmwgfx_drv.h"
33
#include "vmwgfx_kms.h"
34

35
#include <drm/ttm/ttm_placement.h>
36 37 38 39 40 41 42 43

#define VMW_DIRTY_DELAY (HZ / 30)

struct vmw_fb_par {
	struct vmw_private *vmw_priv;

	void *vmalloc;

44
	struct mutex bo_mutex;
45 46
	struct vmw_dma_buffer *vmw_bo;
	struct ttm_bo_kmap_obj map;
47 48 49 50 51 52 53
	void *bo_ptr;
	unsigned bo_size;
	struct drm_framebuffer *set_fb;
	struct drm_display_mode *set_mode;
	u32 fb_x;
	u32 fb_y;
	bool bo_iowrite;
54 55 56 57 58 59 60 61 62 63 64 65 66 67

	u32 pseudo_palette[17];

	unsigned max_width;
	unsigned max_height;

	struct {
		spinlock_t lock;
		bool active;
		unsigned x1;
		unsigned y1;
		unsigned x2;
		unsigned y2;
	} dirty;
68 69 70

	struct drm_crtc *crtc;
	struct drm_connector *con;
71
	struct delayed_work local_work;
72 73 74 75 76 77 78 79 80 81 82 83 84 85
};

static int vmw_fb_setcolreg(unsigned regno, unsigned red, unsigned green,
			    unsigned blue, unsigned transp,
			    struct fb_info *info)
{
	struct vmw_fb_par *par = info->par;
	u32 *pal = par->pseudo_palette;

	if (regno > 15) {
		DRM_ERROR("Bad regno %u.\n", regno);
		return 1;
	}

V
Ville Syrjälä 已提交
86
	switch (par->set_fb->format->depth) {
87 88 89 90 91 92 93
	case 24:
	case 32:
		pal[regno] = ((red & 0xff00) << 8) |
			      (green & 0xff00) |
			     ((blue  & 0xff00) >> 8);
		break;
	default:
V
Ville Syrjälä 已提交
94 95
		DRM_ERROR("Bad depth %u, bpp %u.\n",
			  par->set_fb->format->depth,
V
Ville Syrjälä 已提交
96
			  par->set_fb->format->cpp[0] * 8);
97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144
		return 1;
	}

	return 0;
}

static int vmw_fb_check_var(struct fb_var_screeninfo *var,
			    struct fb_info *info)
{
	int depth = var->bits_per_pixel;
	struct vmw_fb_par *par = info->par;
	struct vmw_private *vmw_priv = par->vmw_priv;

	switch (var->bits_per_pixel) {
	case 32:
		depth = (var->transp.length > 0) ? 32 : 24;
		break;
	default:
		DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
		return -EINVAL;
	}

	switch (depth) {
	case 24:
		var->red.offset = 16;
		var->green.offset = 8;
		var->blue.offset = 0;
		var->red.length = 8;
		var->green.length = 8;
		var->blue.length = 8;
		var->transp.length = 0;
		var->transp.offset = 0;
		break;
	case 32:
		var->red.offset = 16;
		var->green.offset = 8;
		var->blue.offset = 0;
		var->red.length = 8;
		var->green.length = 8;
		var->blue.length = 8;
		var->transp.length = 8;
		var->transp.offset = 24;
		break;
	default:
		DRM_ERROR("Bad depth %u.\n", depth);
		return -EINVAL;
	}

145 146
	if ((var->xoffset + var->xres) > par->max_width ||
	    (var->yoffset + var->yres) > par->max_height) {
147 148 149 150
		DRM_ERROR("Requested geom can not fit in framebuffer\n");
		return -EINVAL;
	}

151
	if (!vmw_kms_validate_mode_vram(vmw_priv,
152
					var->xres * var->bits_per_pixel/8,
153 154 155 156 157
					var->yoffset + var->yres)) {
		DRM_ERROR("Requested geom can not fit in framebuffer\n");
		return -EINVAL;
	}

158 159 160 161 162 163 164 165 166 167 168 169
	return 0;
}

static int vmw_fb_blank(int blank, struct fb_info *info)
{
	return 0;
}

/*
 * Dirty code
 */

170
static void vmw_fb_dirty_flush(struct work_struct *work)
171
{
172 173
	struct vmw_fb_par *par = container_of(work, struct vmw_fb_par,
					      local_work.work);
174 175
	struct vmw_private *vmw_priv = par->vmw_priv;
	struct fb_info *info = vmw_priv->fb_info;
176 177 178 179 180 181
	unsigned long irq_flags;
	s32 dst_x1, dst_x2, dst_y1, dst_y2, w, h;
	u32 cpp, max_x, max_y;
	struct drm_clip_rect clip;
	struct drm_framebuffer *cur_fb;
	u8 *src_ptr, *dst_ptr;
182

183 184 185
	if (vmw_priv->suspended)
		return;

186 187 188 189
	mutex_lock(&par->bo_mutex);
	cur_fb = par->set_fb;
	if (!cur_fb)
		goto out_unlock;
190

191 192 193 194
	spin_lock_irqsave(&par->dirty.lock, irq_flags);
	if (!par->dirty.active) {
		spin_unlock_irqrestore(&par->dirty.lock, irq_flags);
		goto out_unlock;
195 196
	}

197 198 199 200
	/*
	 * Handle panning when copying from vmalloc to framebuffer.
	 * Clip dirty area to framebuffer.
	 */
V
Ville Syrjälä 已提交
201
	cpp = cur_fb->format->cpp[0];
202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217
	max_x = par->fb_x + cur_fb->width;
	max_y = par->fb_y + cur_fb->height;

	dst_x1 = par->dirty.x1 - par->fb_x;
	dst_y1 = par->dirty.y1 - par->fb_y;
	dst_x1 = max_t(s32, dst_x1, 0);
	dst_y1 = max_t(s32, dst_y1, 0);

	dst_x2 = par->dirty.x2 - par->fb_x;
	dst_y2 = par->dirty.y2 - par->fb_y;
	dst_x2 = min_t(s32, dst_x2, max_x);
	dst_y2 = min_t(s32, dst_y2, max_y);
	w = dst_x2 - dst_x1;
	h = dst_y2 - dst_y1;
	w = max_t(s32, 0, w);
	h = max_t(s32, 0, h);
218

219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243
	par->dirty.x1 = par->dirty.x2 = 0;
	par->dirty.y1 = par->dirty.y2 = 0;
	spin_unlock_irqrestore(&par->dirty.lock, irq_flags);

	if (w && h) {
		dst_ptr = (u8 *)par->bo_ptr  +
			(dst_y1 * par->set_fb->pitches[0] + dst_x1 * cpp);
		src_ptr = (u8 *)par->vmalloc +
			((dst_y1 + par->fb_y) * info->fix.line_length +
			 (dst_x1 + par->fb_x) * cpp);

		while (h-- > 0) {
			memcpy(dst_ptr, src_ptr, w*cpp);
			dst_ptr += par->set_fb->pitches[0];
			src_ptr += info->fix.line_length;
		}

		clip.x1 = dst_x1;
		clip.x2 = dst_x2;
		clip.y1 = dst_y1;
		clip.y2 = dst_y2;

		WARN_ON_ONCE(par->set_fb->funcs->dirty(cur_fb, NULL, 0, 0,
						       &clip, 1));
		vmw_fifo_flush(vmw_priv, false);
244
	}
245 246
out_unlock:
	mutex_unlock(&par->bo_mutex);
247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265
}

static void vmw_fb_dirty_mark(struct vmw_fb_par *par,
			      unsigned x1, unsigned y1,
			      unsigned width, unsigned height)
{
	unsigned long flags;
	unsigned x2 = x1 + width;
	unsigned y2 = y1 + height;

	spin_lock_irqsave(&par->dirty.lock, flags);
	if (par->dirty.x1 == par->dirty.x2) {
		par->dirty.x1 = x1;
		par->dirty.y1 = y1;
		par->dirty.x2 = x2;
		par->dirty.y2 = y2;
		/* if we are active start the dirty work
		 * we share the work with the defio system */
		if (par->dirty.active)
266 267
			schedule_delayed_work(&par->local_work,
					      VMW_DIRTY_DELAY);
268 269 270 271 272 273 274 275 276 277 278 279 280
	} else {
		if (x1 < par->dirty.x1)
			par->dirty.x1 = x1;
		if (y1 < par->dirty.y1)
			par->dirty.y1 = y1;
		if (x2 > par->dirty.x2)
			par->dirty.x2 = x2;
		if (y2 > par->dirty.y2)
			par->dirty.y2 = y2;
	}
	spin_unlock_irqrestore(&par->dirty.lock, flags);
}

281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302
static int vmw_fb_pan_display(struct fb_var_screeninfo *var,
			      struct fb_info *info)
{
	struct vmw_fb_par *par = info->par;

	if ((var->xoffset + var->xres) > var->xres_virtual ||
	    (var->yoffset + var->yres) > var->yres_virtual) {
		DRM_ERROR("Requested panning can not fit in framebuffer\n");
		return -EINVAL;
	}

	mutex_lock(&par->bo_mutex);
	par->fb_x = var->xoffset;
	par->fb_y = var->yoffset;
	if (par->set_fb)
		vmw_fb_dirty_mark(par, par->fb_x, par->fb_y, par->set_fb->width,
				  par->set_fb->height);
	mutex_unlock(&par->bo_mutex);

	return 0;
}

303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331
static void vmw_deferred_io(struct fb_info *info,
			    struct list_head *pagelist)
{
	struct vmw_fb_par *par = info->par;
	unsigned long start, end, min, max;
	unsigned long flags;
	struct page *page;
	int y1, y2;

	min = ULONG_MAX;
	max = 0;
	list_for_each_entry(page, pagelist, lru) {
		start = page->index << PAGE_SHIFT;
		end = start + PAGE_SIZE - 1;
		min = min(min, start);
		max = max(max, end);
	}

	if (min < max) {
		y1 = min / info->fix.line_length;
		y2 = (max / info->fix.line_length) + 1;

		spin_lock_irqsave(&par->dirty.lock, flags);
		par->dirty.x1 = 0;
		par->dirty.y1 = y1;
		par->dirty.x2 = info->var.xres;
		par->dirty.y2 = y2;
		spin_unlock_irqrestore(&par->dirty.lock, flags);

332 333 334 335 336 337 338
		/*
		 * Since we've already waited on this work once, try to
		 * execute asap.
		 */
		cancel_delayed_work(&par->local_work);
		schedule_delayed_work(&par->local_work, 0);
	}
339 340
};

341
static struct fb_deferred_io vmw_defio = {
342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380
	.delay		= VMW_DIRTY_DELAY,
	.deferred_io	= vmw_deferred_io,
};

/*
 * Draw code
 */

static void vmw_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
	cfb_fillrect(info, rect);
	vmw_fb_dirty_mark(info->par, rect->dx, rect->dy,
			  rect->width, rect->height);
}

static void vmw_fb_copyarea(struct fb_info *info, const struct fb_copyarea *region)
{
	cfb_copyarea(info, region);
	vmw_fb_dirty_mark(info->par, region->dx, region->dy,
			  region->width, region->height);
}

static void vmw_fb_imageblit(struct fb_info *info, const struct fb_image *image)
{
	cfb_imageblit(info, image);
	vmw_fb_dirty_mark(info->par, image->dx, image->dy,
			  image->width, image->height);
}

/*
 * Bring up code
 */

static int vmw_fb_create_bo(struct vmw_private *vmw_priv,
			    size_t size, struct vmw_dma_buffer **out)
{
	struct vmw_dma_buffer *vmw_bo;
	int ret;

381
	(void) ttm_write_lock(&vmw_priv->reservation_sem, false);
382 383

	vmw_bo = kmalloc(sizeof(*vmw_bo), GFP_KERNEL);
384 385
	if (!vmw_bo) {
		ret = -ENOMEM;
386
		goto err_unlock;
387
	}
388 389

	ret = vmw_dmabuf_init(vmw_priv, vmw_bo, size,
390
			      &vmw_sys_placement,
391 392 393 394 395 396
			      false,
			      &vmw_dmabuf_bo_free);
	if (unlikely(ret != 0))
		goto err_unlock; /* init frees the buffer on failure */

	*out = vmw_bo;
397
	ttm_write_unlock(&vmw_priv->reservation_sem);
398 399 400 401

	return 0;

err_unlock:
402
	ttm_write_unlock(&vmw_priv->reservation_sem);
403 404 405
	return ret;
}

406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468
static int vmw_fb_compute_depth(struct fb_var_screeninfo *var,
				int *depth)
{
	switch (var->bits_per_pixel) {
	case 32:
		*depth = (var->transp.length > 0) ? 32 : 24;
		break;
	default:
		DRM_ERROR("Bad bpp %u.\n", var->bits_per_pixel);
		return -EINVAL;
	}

	return 0;
}

static int vmw_fb_kms_detach(struct vmw_fb_par *par,
			     bool detach_bo,
			     bool unref_bo)
{
	struct drm_framebuffer *cur_fb = par->set_fb;
	int ret;

	/* Detach the KMS framebuffer from crtcs */
	if (par->set_mode) {
		struct drm_mode_set set;

		set.crtc = par->crtc;
		set.x = 0;
		set.y = 0;
		set.mode = NULL;
		set.fb = NULL;
		set.num_connectors = 1;
		set.connectors = &par->con;
		ret = drm_mode_set_config_internal(&set);
		if (ret) {
			DRM_ERROR("Could not unset a mode.\n");
			return ret;
		}
		drm_mode_destroy(par->vmw_priv->dev, par->set_mode);
		par->set_mode = NULL;
	}

	if (cur_fb) {
		drm_framebuffer_unreference(cur_fb);
		par->set_fb = NULL;
	}

	if (par->vmw_bo && detach_bo) {
		if (par->bo_ptr) {
			ttm_bo_kunmap(&par->map);
			par->bo_ptr = NULL;
		}
		if (unref_bo)
			vmw_dmabuf_unreference(&par->vmw_bo);
		else
			vmw_dmabuf_unpin(par->vmw_priv, par->vmw_bo, false);
	}

	return 0;
}

static int vmw_fb_kms_framebuffer(struct fb_info *info)
{
D
Daniel Vetter 已提交
469
	struct drm_mode_fb_cmd2 mode_cmd;
470 471 472 473
	struct vmw_fb_par *par = info->par;
	struct fb_var_screeninfo *var = &info->var;
	struct drm_framebuffer *cur_fb;
	struct vmw_framebuffer *vfb;
D
Daniel Vetter 已提交
474
	int ret = 0, depth;
475 476
	size_t new_bo_size;

D
Daniel Vetter 已提交
477
	ret = vmw_fb_compute_depth(var, &depth);
478 479 480 481 482
	if (ret)
		return ret;

	mode_cmd.width = var->xres;
	mode_cmd.height = var->yres;
D
Daniel Vetter 已提交
483 484 485 486
	mode_cmd.pitches[0] = ((var->bits_per_pixel + 7) / 8) * mode_cmd.width;
	mode_cmd.pixel_format =
		drm_mode_legacy_fb_format(var->bits_per_pixel,
			((var->bits_per_pixel + 7) / 8) * mode_cmd.width);
487 488 489 490

	cur_fb = par->set_fb;
	if (cur_fb && cur_fb->width == mode_cmd.width &&
	    cur_fb->height == mode_cmd.height &&
V
Ville Syrjälä 已提交
491
	    cur_fb->format->format == mode_cmd.pixel_format &&
D
Daniel Vetter 已提交
492
	    cur_fb->pitches[0] == mode_cmd.pitches[0])
493 494 495
		return 0;

	/* Need new buffer object ? */
D
Daniel Vetter 已提交
496
	new_bo_size = (size_t) mode_cmd.pitches[0] * (size_t) mode_cmd.height;
497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555
	ret = vmw_fb_kms_detach(par,
				par->bo_size < new_bo_size ||
				par->bo_size > 2*new_bo_size,
				true);
	if (ret)
		return ret;

	if (!par->vmw_bo) {
		ret = vmw_fb_create_bo(par->vmw_priv, new_bo_size,
				       &par->vmw_bo);
		if (ret) {
			DRM_ERROR("Failed creating a buffer object for "
				  "fbdev.\n");
			return ret;
		}
		par->bo_size = new_bo_size;
	}

	vfb = vmw_kms_new_framebuffer(par->vmw_priv, par->vmw_bo, NULL,
				      true, &mode_cmd);
	if (IS_ERR(vfb))
		return PTR_ERR(vfb);

	par->set_fb = &vfb->base;

	return 0;
}

static int vmw_fb_set_par(struct fb_info *info)
{
	struct vmw_fb_par *par = info->par;
	struct vmw_private *vmw_priv = par->vmw_priv;
	struct drm_mode_set set;
	struct fb_var_screeninfo *var = &info->var;
	struct drm_display_mode new_mode = { DRM_MODE("fb_mode",
		DRM_MODE_TYPE_DRIVER,
		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
		DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
	};
	struct drm_display_mode *old_mode;
	struct drm_display_mode *mode;
	int ret;

	old_mode = par->set_mode;
	mode = drm_mode_duplicate(vmw_priv->dev, &new_mode);
	if (!mode) {
		DRM_ERROR("Could not create new fb mode.\n");
		return -ENOMEM;
	}

	mode->hdisplay = var->xres;
	mode->vdisplay = var->yres;
	vmw_guess_mode_timing(mode);

	if (old_mode && drm_mode_equal(old_mode, mode)) {
		drm_mode_destroy(vmw_priv->dev, mode);
		mode = old_mode;
		old_mode = NULL;
	} else if (!vmw_kms_validate_mode_vram(vmw_priv,
556 557 558
					mode->hdisplay *
					DIV_ROUND_UP(var->bits_per_pixel, 8),
					mode->vdisplay)) {
559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583
		drm_mode_destroy(vmw_priv->dev, mode);
		return -EINVAL;
	}

	mutex_lock(&par->bo_mutex);
	drm_modeset_lock_all(vmw_priv->dev);
	ret = vmw_fb_kms_framebuffer(info);
	if (ret)
		goto out_unlock;

	par->fb_x = var->xoffset;
	par->fb_y = var->yoffset;

	set.crtc = par->crtc;
	set.x = 0;
	set.y = 0;
	set.mode = mode;
	set.fb = par->set_fb;
	set.num_connectors = 1;
	set.connectors = &par->con;

	ret = drm_mode_set_config_internal(&set);
	if (ret)
		goto out_unlock;

584 585 586 587 588 589 590 591 592 593
	if (!par->bo_ptr) {
		struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(set.fb);

		/*
		 * Pin before mapping. Since we don't know in what placement
		 * to pin, call into KMS to do it for us.
		 */
		ret = vfb->pin(vfb);
		if (ret) {
			DRM_ERROR("Could not pin the fbdev framebuffer.\n");
594
			goto out_unlock;
595 596 597 598 599 600 601
		}

		ret = ttm_bo_kmap(&par->vmw_bo->base, 0,
				  par->vmw_bo->base.num_pages, &par->map);
		if (ret) {
			vfb->unpin(vfb);
			DRM_ERROR("Could not map the fbdev framebuffer.\n");
602
			goto out_unlock;
603 604 605 606 607 608
		}

		par->bo_ptr = ttm_kmap_obj_virtual(&par->map, &par->bo_iowrite);
	}


609 610 611 612 613 614
	vmw_fb_dirty_mark(par, par->fb_x, par->fb_y,
			  par->set_fb->width, par->set_fb->height);

	/* If there already was stuff dirty we wont
	 * schedule a new work, so lets do it now */

615
	schedule_delayed_work(&par->local_work, 0);
616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640

out_unlock:
	if (old_mode)
		drm_mode_destroy(vmw_priv->dev, old_mode);
	par->set_mode = mode;

	drm_modeset_unlock_all(vmw_priv->dev);
	mutex_unlock(&par->bo_mutex);

	return ret;
}


static struct fb_ops vmw_fb_ops = {
	.owner = THIS_MODULE,
	.fb_check_var = vmw_fb_check_var,
	.fb_set_par = vmw_fb_set_par,
	.fb_setcolreg = vmw_fb_setcolreg,
	.fb_fillrect = vmw_fb_fillrect,
	.fb_copyarea = vmw_fb_copyarea,
	.fb_imageblit = vmw_fb_imageblit,
	.fb_pan_display = vmw_fb_pan_display,
	.fb_blank = vmw_fb_blank,
};

641 642 643 644 645 646
int vmw_fb_init(struct vmw_private *vmw_priv)
{
	struct device *device = &vmw_priv->dev->pdev->dev;
	struct vmw_fb_par *par;
	struct fb_info *info;
	unsigned fb_width, fb_height;
M
Michel Dänzer 已提交
647
	unsigned fb_bpp, fb_depth, fb_offset, fb_pitch, fb_size;
648
	struct drm_display_mode *init_mode;
649 650
	int ret;

M
Michel Dänzer 已提交
651
	fb_bpp = 32;
652 653
	fb_depth = 24;

654 655 656
	/* XXX As shouldn't these be as well. */
	fb_width = min(vmw_priv->fb_max_width, (unsigned)2048);
	fb_height = min(vmw_priv->fb_max_height, (unsigned)2048);
657

M
Michel Dänzer 已提交
658
	fb_pitch = fb_width * fb_bpp / 8;
659
	fb_size = fb_pitch * fb_height;
660 661 662 663 664 665 666 667 668 669 670
	fb_offset = vmw_read(vmw_priv, SVGA_REG_FB_OFFSET);

	info = framebuffer_alloc(sizeof(*par), device);
	if (!info)
		return -ENOMEM;

	/*
	 * Par
	 */
	vmw_priv->fb_info = info;
	par = info->par;
671
	memset(par, 0, sizeof(*par));
672
	INIT_DELAYED_WORK(&par->local_work, &vmw_fb_dirty_flush);
673 674 675 676 677
	par->vmw_priv = vmw_priv;
	par->vmalloc = NULL;
	par->max_width = fb_width;
	par->max_height = fb_height;

678 679 680 681 682 683 684 685 686 687 688 689 690
	drm_modeset_lock_all(vmw_priv->dev);
	ret = vmw_kms_fbdev_init_data(vmw_priv, 0, par->max_width,
				      par->max_height, &par->con,
				      &par->crtc, &init_mode);
	if (ret) {
		drm_modeset_unlock_all(vmw_priv->dev);
		goto err_kms;
	}

	info->var.xres = init_mode->hdisplay;
	info->var.yres = init_mode->vdisplay;
	drm_modeset_unlock_all(vmw_priv->dev);

691 692 693
	/*
	 * Create buffers and alloc memory
	 */
694
	par->vmalloc = vzalloc(fb_size);
695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716
	if (unlikely(par->vmalloc == NULL)) {
		ret = -ENOMEM;
		goto err_free;
	}

	/*
	 * Fixed and var
	 */
	strcpy(info->fix.id, "svgadrmfb");
	info->fix.type = FB_TYPE_PACKED_PIXELS;
	info->fix.visual = FB_VISUAL_TRUECOLOR;
	info->fix.type_aux = 0;
	info->fix.xpanstep = 1; /* doing it in hw */
	info->fix.ypanstep = 1; /* doing it in hw */
	info->fix.ywrapstep = 0;
	info->fix.accel = FB_ACCEL_NONE;
	info->fix.line_length = fb_pitch;

	info->fix.smem_start = 0;
	info->fix.smem_len = fb_size;

	info->pseudo_palette = par->pseudo_palette;
717
	info->screen_base = (char __iomem *)par->vmalloc;
718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734
	info->screen_size = fb_size;

	info->flags = FBINFO_DEFAULT;
	info->fbops = &vmw_fb_ops;

	/* 24 depth per default */
	info->var.red.offset = 16;
	info->var.green.offset = 8;
	info->var.blue.offset = 0;
	info->var.red.length = 8;
	info->var.green.length = 8;
	info->var.blue.length = 8;
	info->var.transp.offset = 0;
	info->var.transp.length = 0;

	info->var.xres_virtual = fb_width;
	info->var.yres_virtual = fb_height;
735
	info->var.bits_per_pixel = fb_bpp;
736 737 738 739 740 741
	info->var.xoffset = 0;
	info->var.yoffset = 0;
	info->var.activate = FB_ACTIVATE_NOW;
	info->var.height = -1;
	info->var.width = -1;

742
	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
743 744 745 746 747 748 749
	info->apertures = alloc_apertures(1);
	if (!info->apertures) {
		ret = -ENOMEM;
		goto err_aper;
	}
	info->apertures->ranges[0].base = vmw_priv->vram_start;
	info->apertures->ranges[0].size = vmw_priv->vram_size;
750

751 752 753 754
	/*
	 * Dirty & Deferred IO
	 */
	par->dirty.x1 = par->dirty.x2 = 0;
755
	par->dirty.y1 = par->dirty.y2 = 0;
756 757
	par->dirty.active = true;
	spin_lock_init(&par->dirty.lock);
758
	mutex_init(&par->bo_mutex);
759 760 761 762 763 764 765
	info->fbdefio = &vmw_defio;
	fb_deferred_io_init(info);

	ret = register_framebuffer(info);
	if (unlikely(ret != 0))
		goto err_defio;

766 767
	vmw_fb_set_par(info);

768 769 770 771
	return 0;

err_defio:
	fb_deferred_io_cleanup(info);
772
err_aper:
773 774
err_free:
	vfree(par->vmalloc);
775
err_kms:
776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794
	framebuffer_release(info);
	vmw_priv->fb_info = NULL;

	return ret;
}

int vmw_fb_close(struct vmw_private *vmw_priv)
{
	struct fb_info *info;
	struct vmw_fb_par *par;

	if (!vmw_priv->fb_info)
		return 0;

	info = vmw_priv->fb_info;
	par = info->par;

	/* ??? order */
	fb_deferred_io_cleanup(info);
795
	cancel_delayed_work_sync(&par->local_work);
796 797
	unregister_framebuffer(info);

798
	(void) vmw_fb_kms_detach(par, true, true);
799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821

	vfree(par->vmalloc);
	framebuffer_release(info);

	return 0;
}

int vmw_fb_off(struct vmw_private *vmw_priv)
{
	struct fb_info *info;
	struct vmw_fb_par *par;
	unsigned long flags;

	if (!vmw_priv->fb_info)
		return -EINVAL;

	info = vmw_priv->fb_info;
	par = info->par;

	spin_lock_irqsave(&par->dirty.lock, flags);
	par->dirty.active = false;
	spin_unlock_irqrestore(&par->dirty.lock, flags);

822
	flush_delayed_work(&info->deferred_work);
823
	flush_delayed_work(&par->local_work);
824

825 826 827
	mutex_lock(&par->bo_mutex);
	(void) vmw_fb_kms_detach(par, true, false);
	mutex_unlock(&par->bo_mutex);
828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843

	return 0;
}

int vmw_fb_on(struct vmw_private *vmw_priv)
{
	struct fb_info *info;
	struct vmw_fb_par *par;
	unsigned long flags;

	if (!vmw_priv->fb_info)
		return -EINVAL;

	info = vmw_priv->fb_info;
	par = info->par;

844
	vmw_fb_set_par(info);
845 846 847
	spin_lock_irqsave(&par->dirty.lock, flags);
	par->dirty.active = true;
	spin_unlock_irqrestore(&par->dirty.lock, flags);
848
 
849 850
	return 0;
}