C++ (Cpp) ttm_agp_tt_populate示例

示例#1

文件： radeon_ttm.c 项目： Kratos1982/UbuntuTouch

static int radeon_ttm_tt_populate(struct ttm_tt *ttm)
{
	struct radeon_device *rdev;
	struct radeon_ttm_tt *gtt = (void *)ttm;
	unsigned i;
	int r;
	bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);

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

	if (slave && ttm->sg) {
		drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
						 gtt->ttm.dma_address, ttm->num_pages);
		ttm->state = tt_unbound;
		return 0;
	}

	rdev = radeon_get_rdev(ttm->bdev);
#if __OS_HAS_AGP
	if (rdev->flags & RADEON_IS_AGP) {
		return ttm_agp_tt_populate(ttm);
	}
#endif

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0))
#ifdef CONFIG_SWIOTLB
	if (swiotlb_nr_tbl()) {
		return ttm_dma_populate(&gtt->ttm, rdev->dev);
	}
#endif
#endif

	r = ttm_pool_populate(ttm);
	if (r) {
		return r;
	}

	for (i = 0; i < ttm->num_pages; i++) {
		gtt->ttm.dma_address[i] = pci_map_page(rdev->pdev, ttm->pages[i],
						       0, PAGE_SIZE,
						       PCI_DMA_BIDIRECTIONAL);
		if (pci_dma_mapping_error(rdev->pdev, gtt->ttm.dma_address[i])) {
			while (--i) {
				pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i],
					       PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
				gtt->ttm.dma_address[i] = 0;
			}
			ttm_pool_unpopulate(ttm);
			return -EFAULT;
		}
	}
	return 0;
}

示例#2

文件： radeon_ttm.c 项目： laitianli/loongson-linux-2.6.36-3_mips

static int radeon_ttm_tt_populate(struct ttm_tt *ttm)
{
	struct radeon_device *rdev;
	struct radeon_ttm_tt *gtt = (void *)ttm;
	unsigned i;
	int r;

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

	rdev = radeon_get_rdev(ttm->bdev);
#if __OS_HAS_AGP
	if (rdev->flags & RADEON_IS_AGP) {
		return ttm_agp_tt_populate(ttm);
	}
#endif

#ifdef CONFIG_SWIOTLB
	if (swiotlb_nr_tbl()) {
		return ttm_dma_populate(&gtt->ttm, rdev->dev);
	}
#endif

	r = ttm_pool_populate(ttm);
	if (r) {
		return r;
	}

	for (i = 0; i < ttm->num_pages; i++) {
		gtt->ttm.dma_address[i] = pci_map_page(rdev->pdev, ttm->pages[i],
						       0, PAGE_SIZE,
						       PCI_DMA_BIDIRECTIONAL);
		if (pci_dma_mapping_error(rdev->pdev, gtt->ttm.dma_address[i])) {
			while (--i) {
				pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i],
					       PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
				gtt->ttm.dma_address[i] = 0;
			}
			ttm_pool_unpopulate(ttm);
			return -EFAULT;
		}
	}
	return 0;
}

示例#3

文件： radeon_ttm.c 项目： orumin/openbsd-efivars

static int radeon_ttm_tt_populate(struct ttm_tt *ttm)
{
	struct radeon_device *rdev;
	struct radeon_ttm_tt *gtt = (void *)ttm;
	unsigned i;
	int r, seg;
	bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);

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

	if (slave && ttm->sg) {
#ifdef notyet
		drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
						 gtt->ttm.dma_address, ttm->num_pages);
#endif
		ttm->state = tt_unbound;
		return 0;
	}

	rdev = radeon_get_rdev(ttm->bdev);
#if __OS_HAS_AGP
	if (rdev->flags & RADEON_IS_AGP) {
		return ttm_agp_tt_populate(ttm);
	}
#endif

#ifdef CONFIG_SWIOTLB
	if (swiotlb_nr_tbl()) {
		return ttm_dma_populate(&gtt->ttm, rdev->dev);
	}
#endif

	r = ttm_pool_populate(ttm);
	if (r) {
		return r;
	}

	for (i = 0; i < ttm->num_pages; i++) {
		gtt->segs[i].ds_addr = VM_PAGE_TO_PHYS(ttm->pages[i]);
		gtt->segs[i].ds_len = PAGE_SIZE;
	}

	if (bus_dmamap_load_raw(rdev->dmat, gtt->map, gtt->segs,
				ttm->num_pages,
				ttm->num_pages * PAGE_SIZE, 0)) {
		ttm_pool_unpopulate(ttm);
		return -EFAULT;
	}

	for (seg = 0, i = 0; seg < gtt->map->dm_nsegs; seg++) {
		bus_addr_t addr = gtt->map->dm_segs[seg].ds_addr;
		bus_size_t len = gtt->map->dm_segs[seg].ds_len;

		while (len > 0) {
			gtt->ttm.dma_address[i++] = addr;
			addr += PAGE_SIZE;
			len -= PAGE_SIZE;
		}
	}

	return 0;
}

示例#4

文件： radeon_ttm.c 项目： mihaicarabas/dragonfly

static int radeon_ttm_tt_populate(struct ttm_tt *ttm)
{
	struct radeon_device *rdev;
	struct radeon_ttm_tt *gtt = (void *)ttm;
	unsigned i;
	int r;
#ifdef DUMBBELL_WIP
	bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
#endif /* DUMBBELL_WIP */

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

#ifdef DUMBBELL_WIP
	/*
	 * Maybe unneeded on FreeBSD.
	 *   -- dumbbell@
	 */
	if (slave && ttm->sg) {
		drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
						 gtt->ttm.dma_address, ttm->num_pages);
		ttm->state = tt_unbound;
		return 0;
	}
#endif /* DUMBBELL_WIP */

	rdev = radeon_get_rdev(ttm->bdev);
#if __OS_HAS_AGP
#ifdef DUMBBELL_WIP
	if (rdev->flags & RADEON_IS_AGP) {
		return ttm_agp_tt_populate(ttm);
	}
#endif /* DUMBBELL_WIP */
#endif

#ifdef CONFIG_SWIOTLB
	if (swiotlb_nr_tbl()) {
		return ttm_dma_populate(&gtt->ttm, rdev->dev);
	}
#endif

	r = ttm_pool_populate(ttm);
	if (r) {
		return r;
	}

	for (i = 0; i < ttm->num_pages; i++) {
		gtt->ttm.dma_address[i] = VM_PAGE_TO_PHYS(ttm->pages[i]);
#ifdef DUMBBELL_WIP
		gtt->ttm.dma_address[i] = pci_map_page(rdev->pdev, ttm->pages[i],
						       0, PAGE_SIZE,
						       PCI_DMA_BIDIRECTIONAL);
		if (pci_dma_mapping_error(rdev->pdev, gtt->ttm.dma_address[i])) {
			while (--i) {
				pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i],
					       PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
				gtt->ttm.dma_address[i] = 0;
			}
			ttm_pool_unpopulate(ttm);
			return -EFAULT;
		}
#endif /* DUMBBELL_WIP */
	}
	return 0;
}