vmwgfx_buffer.c 18.3 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
/**************************************************************************
 *
 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
 * 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.
 *
 **************************************************************************/

#include "vmwgfx_drv.h"
29 30 31
#include <drm/ttm/ttm_bo_driver.h>
#include <drm/ttm/ttm_placement.h>
#include <drm/ttm/ttm_page_alloc.h>
32 33 34 35 36 37 38 39 40 41 42

static uint32_t vram_placement_flags = TTM_PL_FLAG_VRAM |
	TTM_PL_FLAG_CACHED;

static uint32_t vram_ne_placement_flags = TTM_PL_FLAG_VRAM |
	TTM_PL_FLAG_CACHED |
	TTM_PL_FLAG_NO_EVICT;

static uint32_t sys_placement_flags = TTM_PL_FLAG_SYSTEM |
	TTM_PL_FLAG_CACHED;

43 44 45
static uint32_t gmr_placement_flags = VMW_PL_FLAG_GMR |
	TTM_PL_FLAG_CACHED;

46 47 48 49
static uint32_t gmr_ne_placement_flags = VMW_PL_FLAG_GMR |
	TTM_PL_FLAG_CACHED |
	TTM_PL_FLAG_NO_EVICT;

50 51 52 53 54 55 56 57 58
struct ttm_placement vmw_vram_placement = {
	.fpfn = 0,
	.lpfn = 0,
	.num_placement = 1,
	.placement = &vram_placement_flags,
	.num_busy_placement = 1,
	.busy_placement = &vram_placement_flags
};

59 60 61 62 63
static uint32_t vram_gmr_placement_flags[] = {
	TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED,
	VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
};

64 65 66 67 68
static uint32_t gmr_vram_placement_flags[] = {
	VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED,
	TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED
};

69 70 71 72 73 74 75 76 77
struct ttm_placement vmw_vram_gmr_placement = {
	.fpfn = 0,
	.lpfn = 0,
	.num_placement = 2,
	.placement = vram_gmr_placement_flags,
	.num_busy_placement = 1,
	.busy_placement = &gmr_placement_flags
};

78 79 80 81 82 83 84 85 86 87 88 89 90 91
static uint32_t vram_gmr_ne_placement_flags[] = {
	TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT,
	VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED | TTM_PL_FLAG_NO_EVICT
};

struct ttm_placement vmw_vram_gmr_ne_placement = {
	.fpfn = 0,
	.lpfn = 0,
	.num_placement = 2,
	.placement = vram_gmr_ne_placement_flags,
	.num_busy_placement = 1,
	.busy_placement = &gmr_ne_placement_flags
};

92 93 94 95 96 97 98 99 100
struct ttm_placement vmw_vram_sys_placement = {
	.fpfn = 0,
	.lpfn = 0,
	.num_placement = 1,
	.placement = &vram_placement_flags,
	.num_busy_placement = 1,
	.busy_placement = &sys_placement_flags
};

101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118
struct ttm_placement vmw_vram_ne_placement = {
	.fpfn = 0,
	.lpfn = 0,
	.num_placement = 1,
	.placement = &vram_ne_placement_flags,
	.num_busy_placement = 1,
	.busy_placement = &vram_ne_placement_flags
};

struct ttm_placement vmw_sys_placement = {
	.fpfn = 0,
	.lpfn = 0,
	.num_placement = 1,
	.placement = &sys_placement_flags,
	.num_busy_placement = 1,
	.busy_placement = &sys_placement_flags
};

119 120 121 122 123 124 125 126 127 128 129 130 131 132 133
static uint32_t evictable_placement_flags[] = {
	TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED,
	TTM_PL_FLAG_VRAM | TTM_PL_FLAG_CACHED,
	VMW_PL_FLAG_GMR | TTM_PL_FLAG_CACHED
};

struct ttm_placement vmw_evictable_placement = {
	.fpfn = 0,
	.lpfn = 0,
	.num_placement = 3,
	.placement = evictable_placement_flags,
	.num_busy_placement = 1,
	.busy_placement = &sys_placement_flags
};

134 135 136 137 138 139 140 141 142
struct ttm_placement vmw_srf_placement = {
	.fpfn = 0,
	.lpfn = 0,
	.num_placement = 1,
	.num_busy_placement = 2,
	.placement = &gmr_placement_flags,
	.busy_placement = gmr_vram_placement_flags
};

143
struct vmw_ttm_tt {
144
	struct ttm_dma_tt dma_ttm;
145 146
	struct vmw_private *dev_priv;
	int gmr_id;
147 148 149 150
	struct sg_table sgt;
	struct vmw_sg_table vsgt;
	uint64_t sg_alloc_size;
	bool mapped;
151 152
};

153 154
const size_t vmw_tt_size = sizeof(struct vmw_ttm_tt);

155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426
/**
 * Helper functions to advance a struct vmw_piter iterator.
 *
 * @viter: Pointer to the iterator.
 *
 * These functions return false if past the end of the list,
 * true otherwise. Functions are selected depending on the current
 * DMA mapping mode.
 */
static bool __vmw_piter_non_sg_next(struct vmw_piter *viter)
{
	return ++(viter->i) < viter->num_pages;
}

static bool __vmw_piter_sg_next(struct vmw_piter *viter)
{
	return __sg_page_iter_next(&viter->iter);
}


/**
 * Helper functions to return a pointer to the current page.
 *
 * @viter: Pointer to the iterator
 *
 * These functions return a pointer to the page currently
 * pointed to by @viter. Functions are selected depending on the
 * current mapping mode.
 */
static struct page *__vmw_piter_non_sg_page(struct vmw_piter *viter)
{
	return viter->pages[viter->i];
}

static struct page *__vmw_piter_sg_page(struct vmw_piter *viter)
{
	return sg_page_iter_page(&viter->iter);
}


/**
 * Helper functions to return the DMA address of the current page.
 *
 * @viter: Pointer to the iterator
 *
 * These functions return the DMA address of the page currently
 * pointed to by @viter. Functions are selected depending on the
 * current mapping mode.
 */
static dma_addr_t __vmw_piter_phys_addr(struct vmw_piter *viter)
{
	return page_to_phys(viter->pages[viter->i]);
}

static dma_addr_t __vmw_piter_dma_addr(struct vmw_piter *viter)
{
	return viter->addrs[viter->i];
}

static dma_addr_t __vmw_piter_sg_addr(struct vmw_piter *viter)
{
	return sg_page_iter_dma_address(&viter->iter);
}


/**
 * vmw_piter_start - Initialize a struct vmw_piter.
 *
 * @viter: Pointer to the iterator to initialize
 * @vsgt: Pointer to a struct vmw_sg_table to initialize from
 *
 * Note that we're following the convention of __sg_page_iter_start, so that
 * the iterator doesn't point to a valid page after initialization; it has
 * to be advanced one step first.
 */
void vmw_piter_start(struct vmw_piter *viter, const struct vmw_sg_table *vsgt,
		     unsigned long p_offset)
{
	viter->i = p_offset - 1;
	viter->num_pages = vsgt->num_pages;
	switch (vsgt->mode) {
	case vmw_dma_phys:
		viter->next = &__vmw_piter_non_sg_next;
		viter->dma_address = &__vmw_piter_phys_addr;
		viter->page = &__vmw_piter_non_sg_page;
		viter->pages = vsgt->pages;
		break;
	case vmw_dma_alloc_coherent:
		viter->next = &__vmw_piter_non_sg_next;
		viter->dma_address = &__vmw_piter_dma_addr;
		viter->page = &__vmw_piter_non_sg_page;
		viter->addrs = vsgt->addrs;
		break;
	case vmw_dma_map_populate:
	case vmw_dma_map_bind:
		viter->next = &__vmw_piter_sg_next;
		viter->dma_address = &__vmw_piter_sg_addr;
		viter->page = &__vmw_piter_sg_page;
		__sg_page_iter_start(&viter->iter, vsgt->sgt->sgl,
				     vsgt->sgt->orig_nents, p_offset);
		break;
	default:
		BUG();
	}
}

/**
 * vmw_ttm_unmap_from_dma - unmap  device addresses previsouly mapped for
 * TTM pages
 *
 * @vmw_tt: Pointer to a struct vmw_ttm_backend
 *
 * Used to free dma mappings previously mapped by vmw_ttm_map_for_dma.
 */
static void vmw_ttm_unmap_from_dma(struct vmw_ttm_tt *vmw_tt)
{
	struct device *dev = vmw_tt->dev_priv->dev->dev;

	dma_unmap_sg(dev, vmw_tt->sgt.sgl, vmw_tt->sgt.nents,
		DMA_BIDIRECTIONAL);
	vmw_tt->sgt.nents = vmw_tt->sgt.orig_nents;
}

/**
 * vmw_ttm_map_for_dma - map TTM pages to get device addresses
 *
 * @vmw_tt: Pointer to a struct vmw_ttm_backend
 *
 * This function is used to get device addresses from the kernel DMA layer.
 * However, it's violating the DMA API in that when this operation has been
 * performed, it's illegal for the CPU to write to the pages without first
 * unmapping the DMA mappings, or calling dma_sync_sg_for_cpu(). It is
 * therefore only legal to call this function if we know that the function
 * dma_sync_sg_for_cpu() is a NOP, and dma_sync_sg_for_device() is at most
 * a CPU write buffer flush.
 */
static int vmw_ttm_map_for_dma(struct vmw_ttm_tt *vmw_tt)
{
	struct device *dev = vmw_tt->dev_priv->dev->dev;
	int ret;

	ret = dma_map_sg(dev, vmw_tt->sgt.sgl, vmw_tt->sgt.orig_nents,
			 DMA_BIDIRECTIONAL);
	if (unlikely(ret == 0))
		return -ENOMEM;

	vmw_tt->sgt.nents = ret;

	return 0;
}

/**
 * vmw_ttm_map_dma - Make sure TTM pages are visible to the device
 *
 * @vmw_tt: Pointer to a struct vmw_ttm_tt
 *
 * Select the correct function for and make sure the TTM pages are
 * visible to the device. Allocate storage for the device mappings.
 * If a mapping has already been performed, indicated by the storage
 * pointer being non NULL, the function returns success.
 */
static int vmw_ttm_map_dma(struct vmw_ttm_tt *vmw_tt)
{
	struct vmw_private *dev_priv = vmw_tt->dev_priv;
	struct ttm_mem_global *glob = vmw_mem_glob(dev_priv);
	struct vmw_sg_table *vsgt = &vmw_tt->vsgt;
	struct vmw_piter iter;
	dma_addr_t old;
	int ret = 0;
	static size_t sgl_size;
	static size_t sgt_size;

	if (vmw_tt->mapped)
		return 0;

	vsgt->mode = dev_priv->map_mode;
	vsgt->pages = vmw_tt->dma_ttm.ttm.pages;
	vsgt->num_pages = vmw_tt->dma_ttm.ttm.num_pages;
	vsgt->addrs = vmw_tt->dma_ttm.dma_address;
	vsgt->sgt = &vmw_tt->sgt;

	switch (dev_priv->map_mode) {
	case vmw_dma_map_bind:
	case vmw_dma_map_populate:
		if (unlikely(!sgl_size)) {
			sgl_size = ttm_round_pot(sizeof(struct scatterlist));
			sgt_size = ttm_round_pot(sizeof(struct sg_table));
		}
		vmw_tt->sg_alloc_size = sgt_size + sgl_size * vsgt->num_pages;
		ret = ttm_mem_global_alloc(glob, vmw_tt->sg_alloc_size, false,
					   true);
		if (unlikely(ret != 0))
			return ret;

		ret = sg_alloc_table_from_pages(&vmw_tt->sgt, vsgt->pages,
						vsgt->num_pages, 0,
						(unsigned long)
						vsgt->num_pages << PAGE_SHIFT,
						GFP_KERNEL);
		if (unlikely(ret != 0))
			goto out_sg_alloc_fail;

		if (vsgt->num_pages > vmw_tt->sgt.nents) {
			uint64_t over_alloc =
				sgl_size * (vsgt->num_pages -
					    vmw_tt->sgt.nents);

			ttm_mem_global_free(glob, over_alloc);
			vmw_tt->sg_alloc_size -= over_alloc;
		}

		ret = vmw_ttm_map_for_dma(vmw_tt);
		if (unlikely(ret != 0))
			goto out_map_fail;

		break;
	default:
		break;
	}

	old = ~((dma_addr_t) 0);
	vmw_tt->vsgt.num_regions = 0;
	for (vmw_piter_start(&iter, vsgt, 0); vmw_piter_next(&iter);) {
		dma_addr_t cur = vmw_piter_dma_addr(&iter);

		if (cur != old + PAGE_SIZE)
			vmw_tt->vsgt.num_regions++;
		old = cur;
	}

	vmw_tt->mapped = true;
	return 0;

out_map_fail:
	sg_free_table(vmw_tt->vsgt.sgt);
	vmw_tt->vsgt.sgt = NULL;
out_sg_alloc_fail:
	ttm_mem_global_free(glob, vmw_tt->sg_alloc_size);
	return ret;
}

/**
 * vmw_ttm_unmap_dma - Tear down any TTM page device mappings
 *
 * @vmw_tt: Pointer to a struct vmw_ttm_tt
 *
 * Tear down any previously set up device DMA mappings and free
 * any storage space allocated for them. If there are no mappings set up,
 * this function is a NOP.
 */
static void vmw_ttm_unmap_dma(struct vmw_ttm_tt *vmw_tt)
{
	struct vmw_private *dev_priv = vmw_tt->dev_priv;

	if (!vmw_tt->vsgt.sgt)
		return;

	switch (dev_priv->map_mode) {
	case vmw_dma_map_bind:
	case vmw_dma_map_populate:
		vmw_ttm_unmap_from_dma(vmw_tt);
		sg_free_table(vmw_tt->vsgt.sgt);
		vmw_tt->vsgt.sgt = NULL;
		ttm_mem_global_free(vmw_mem_glob(dev_priv),
				    vmw_tt->sg_alloc_size);
		break;
	default:
		break;
	}
	vmw_tt->mapped = false;
}

427
static int vmw_ttm_bind(struct ttm_tt *ttm, struct ttm_mem_reg *bo_mem)
428
{
429 430 431 432 433 434 435
	struct vmw_ttm_tt *vmw_be =
		container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm);
	int ret;

	ret = vmw_ttm_map_dma(vmw_be);
	if (unlikely(ret != 0))
		return ret;
436 437 438

	vmw_be->gmr_id = bo_mem->start;

439
	return vmw_gmr_bind(vmw_be->dev_priv, &vmw_be->vsgt,
440
			    ttm->num_pages, vmw_be->gmr_id);
441 442
}

443
static int vmw_ttm_unbind(struct ttm_tt *ttm)
444
{
445 446
	struct vmw_ttm_tt *vmw_be =
		container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm);
447 448

	vmw_gmr_unbind(vmw_be->dev_priv, vmw_be->gmr_id);
449 450 451 452

	if (vmw_be->dev_priv->map_mode == vmw_dma_map_bind)
		vmw_ttm_unmap_dma(vmw_be);

453 454 455
	return 0;
}

456
static void vmw_ttm_destroy(struct ttm_tt *ttm)
457
{
458 459 460 461 462 463 464 465
	struct vmw_ttm_tt *vmw_be =
		container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm);

	vmw_ttm_unmap_dma(vmw_be);
	if (vmw_be->dev_priv->map_mode == vmw_dma_alloc_coherent)
		ttm_dma_tt_fini(&vmw_be->dma_ttm);
	else
		ttm_tt_fini(ttm);
466 467 468
	kfree(vmw_be);
}

469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513
static int vmw_ttm_populate(struct ttm_tt *ttm)
{
	struct vmw_ttm_tt *vmw_tt =
		container_of(ttm, struct vmw_ttm_tt, dma_ttm.ttm);
	struct vmw_private *dev_priv = vmw_tt->dev_priv;
	struct ttm_mem_global *glob = vmw_mem_glob(dev_priv);
	int ret;

	if (ttm->state != tt_unpopulated)
		return 0;

	if (dev_priv->map_mode == vmw_dma_alloc_coherent) {
		size_t size =
			ttm_round_pot(ttm->num_pages * sizeof(dma_addr_t));
		ret = ttm_mem_global_alloc(glob, size, false, true);
		if (unlikely(ret != 0))
			return ret;

		ret = ttm_dma_populate(&vmw_tt->dma_ttm, dev_priv->dev->dev);
		if (unlikely(ret != 0))
			ttm_mem_global_free(glob, size);
	} else
		ret = ttm_pool_populate(ttm);

	return ret;
}

static void vmw_ttm_unpopulate(struct ttm_tt *ttm)
{
	struct vmw_ttm_tt *vmw_tt = container_of(ttm, struct vmw_ttm_tt,
						 dma_ttm.ttm);
	struct vmw_private *dev_priv = vmw_tt->dev_priv;
	struct ttm_mem_global *glob = vmw_mem_glob(dev_priv);

	vmw_ttm_unmap_dma(vmw_tt);
	if (dev_priv->map_mode == vmw_dma_alloc_coherent) {
		size_t size =
			ttm_round_pot(ttm->num_pages * sizeof(dma_addr_t));

		ttm_dma_unpopulate(&vmw_tt->dma_ttm, dev_priv->dev->dev);
		ttm_mem_global_free(glob, size);
	} else
		ttm_pool_unpopulate(ttm);
}

514 515 516 517 518 519
static struct ttm_backend_func vmw_ttm_func = {
	.bind = vmw_ttm_bind,
	.unbind = vmw_ttm_unbind,
	.destroy = vmw_ttm_destroy,
};

520
static struct ttm_tt *vmw_ttm_tt_create(struct ttm_bo_device *bdev,
521 522
				 unsigned long size, uint32_t page_flags,
				 struct page *dummy_read_page)
523
{
524
	struct vmw_ttm_tt *vmw_be;
525
	int ret;
526

527
	vmw_be = kzalloc(sizeof(*vmw_be), GFP_KERNEL);
528 529 530
	if (!vmw_be)
		return NULL;

531
	vmw_be->dma_ttm.ttm.func = &vmw_ttm_func;
532
	vmw_be->dev_priv = container_of(bdev, struct vmw_private, bdev);
533

534 535 536 537 538 539 540 541 542 543 544 545 546
	if (vmw_be->dev_priv->map_mode == vmw_dma_alloc_coherent)
		ret = ttm_dma_tt_init(&vmw_be->dma_ttm, bdev, size, page_flags,
				      dummy_read_page);
	else
		ret = ttm_tt_init(&vmw_be->dma_ttm.ttm, bdev, size, page_flags,
				  dummy_read_page);
	if (unlikely(ret != 0))
		goto out_no_init;

	return &vmw_be->dma_ttm.ttm;
out_no_init:
	kfree(vmw_be);
	return NULL;
547 548
}

549
static int vmw_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
550 551 552 553
{
	return 0;
}

554
static int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
555 556 557 558 559 560 561
		      struct ttm_mem_type_manager *man)
{
	switch (type) {
	case TTM_PL_SYSTEM:
		/* System memory */

		man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
562
		man->available_caching = TTM_PL_FLAG_CACHED;
563 564 565 566
		man->default_caching = TTM_PL_FLAG_CACHED;
		break;
	case TTM_PL_VRAM:
		/* "On-card" video ram */
567
		man->func = &ttm_bo_manager_func;
568
		man->gpu_offset = 0;
569
		man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_MAPPABLE;
570 571 572 573 574 575 576 577 578 579 580 581 582 583
		man->available_caching = TTM_PL_FLAG_CACHED;
		man->default_caching = TTM_PL_FLAG_CACHED;
		break;
	case VMW_PL_GMR:
		/*
		 * "Guest Memory Regions" is an aperture like feature with
		 *  one slot per bo. There is an upper limit of the number of
		 *  slots as well as the bo size.
		 */
		man->func = &vmw_gmrid_manager_func;
		man->gpu_offset = 0;
		man->flags = TTM_MEMTYPE_FLAG_CMA | TTM_MEMTYPE_FLAG_MAPPABLE;
		man->available_caching = TTM_PL_FLAG_CACHED;
		man->default_caching = TTM_PL_FLAG_CACHED;
584 585 586 587 588 589 590 591
		break;
	default:
		DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
		return -EINVAL;
	}
	return 0;
}

592
static void vmw_evict_flags(struct ttm_buffer_object *bo,
593 594 595 596 597 598 599
		     struct ttm_placement *placement)
{
	*placement = vmw_sys_placement;
}

static int vmw_verify_access(struct ttm_buffer_object *bo, struct file *filp)
{
600 601 602 603
	struct ttm_object_file *tfile =
		vmw_fpriv((struct drm_file *)filp->private_data)->tfile;

	return vmw_user_dmabuf_verify_access(bo, tfile);
604 605
}

606 607 608 609 610 611 612 613 614 615 616 617 618 619
static int vmw_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
{
	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
	struct vmw_private *dev_priv = container_of(bdev, struct vmw_private, bdev);

	mem->bus.addr = NULL;
	mem->bus.is_iomem = false;
	mem->bus.offset = 0;
	mem->bus.size = mem->num_pages << PAGE_SHIFT;
	mem->bus.base = 0;
	if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
		return -EINVAL;
	switch (mem->mem_type) {
	case TTM_PL_SYSTEM:
620
	case VMW_PL_GMR:
621 622
		return 0;
	case TTM_PL_VRAM:
623
		mem->bus.offset = mem->start << PAGE_SHIFT;
624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641
		mem->bus.base = dev_priv->vram_start;
		mem->bus.is_iomem = true;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

static void vmw_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
{
}

static int vmw_ttm_fault_reserve_notify(struct ttm_buffer_object *bo)
{
	return 0;
}

642 643 644 645 646 647 648
/**
 * FIXME: We're using the old vmware polling method to sync.
 * Do this with fences instead.
 */

static void *vmw_sync_obj_ref(void *sync_obj)
{
649 650 651

	return (void *)
		vmw_fence_obj_reference((struct vmw_fence_obj *) sync_obj);
652 653 654 655
}

static void vmw_sync_obj_unref(void **sync_obj)
{
656
	vmw_fence_obj_unreference((struct vmw_fence_obj **) sync_obj);
657 658
}

659
static int vmw_sync_obj_flush(void *sync_obj)
660
{
661
	vmw_fence_obj_flush((struct vmw_fence_obj *) sync_obj);
662 663 664
	return 0;
}

665
static bool vmw_sync_obj_signaled(void *sync_obj)
666
{
667
	return	vmw_fence_obj_signaled((struct vmw_fence_obj *) sync_obj,
668
				       DRM_VMW_FENCE_FLAG_EXEC);
669 670 671

}

672
static int vmw_sync_obj_wait(void *sync_obj, bool lazy, bool interruptible)
673
{
674
	return vmw_fence_obj_wait((struct vmw_fence_obj *) sync_obj,
675
				  DRM_VMW_FENCE_FLAG_EXEC,
676 677
				  lazy, interruptible,
				  VMW_FENCE_WAIT_TIMEOUT);
678 679 680
}

struct ttm_bo_driver vmw_bo_driver = {
681
	.ttm_tt_create = &vmw_ttm_tt_create,
682 683
	.ttm_tt_populate = &vmw_ttm_populate,
	.ttm_tt_unpopulate = &vmw_ttm_unpopulate,
684 685 686 687 688 689 690 691 692
	.invalidate_caches = vmw_invalidate_caches,
	.init_mem_type = vmw_init_mem_type,
	.evict_flags = vmw_evict_flags,
	.move = NULL,
	.verify_access = vmw_verify_access,
	.sync_obj_signaled = vmw_sync_obj_signaled,
	.sync_obj_wait = vmw_sync_obj_wait,
	.sync_obj_flush = vmw_sync_obj_flush,
	.sync_obj_unref = vmw_sync_obj_unref,
693
	.sync_obj_ref = vmw_sync_obj_ref,
694 695
	.move_notify = NULL,
	.swap_notify = NULL,
696 697 698
	.fault_reserve_notify = &vmw_ttm_fault_reserve_notify,
	.io_mem_reserve = &vmw_ttm_io_mem_reserve,
	.io_mem_free = &vmw_ttm_io_mem_free,
699
};