C++ (Cpp) host1x_bo_init Examples

Example #1

File: gem.c Project: JaneDu/ath

static struct tegra_bo *tegra_bo_alloc_object(struct drm_device *drm,
					      size_t size)
{
	struct tegra_bo *bo;
	int err;

	bo = kzalloc(sizeof(*bo), GFP_KERNEL);
	if (!bo)
		return ERR_PTR(-ENOMEM);

	host1x_bo_init(&bo->base, &tegra_bo_ops);
	size = round_up(size, PAGE_SIZE);

	err = drm_gem_object_init(drm, &bo->gem, size);
	if (err < 0)
		goto free;

	err = drm_gem_create_mmap_offset(&bo->gem);
	if (err < 0)
		goto release;

	return bo;

release:
	drm_gem_object_release(&bo->gem);
free:
	kfree(bo);
	return ERR_PTR(err);
}

Example #2

File: gem.c Project: mikuhatsune001/linux2.6.32

struct tegra_bo *tegra_bo_create(struct drm_device *drm, unsigned int size,
				 unsigned long flags)
{
	struct tegra_bo *bo;
	int err;

	bo = kzalloc(sizeof(*bo), GFP_KERNEL);
	if (!bo)
		return ERR_PTR(-ENOMEM);

	host1x_bo_init(&bo->base, &tegra_bo_ops);
	size = round_up(size, PAGE_SIZE);

	bo->vaddr = dma_alloc_writecombine(drm->dev, size, &bo->paddr,
					   GFP_KERNEL | __GFP_NOWARN);
	if (!bo->vaddr) {
		dev_err(drm->dev, "failed to allocate buffer with size %u\n",
			size);
		err = -ENOMEM;
		goto err_dma;
	}

	err = drm_gem_object_init(drm, &bo->gem, size);
	if (err)
		goto err_init;

	err = drm_gem_create_mmap_offset(&bo->gem);
	if (err)
		goto err_mmap;

	if (flags & DRM_TEGRA_GEM_CREATE_TILED)
		bo->tiling.mode = TEGRA_BO_TILING_MODE_TILED;

	if (flags & DRM_TEGRA_GEM_CREATE_BOTTOM_UP)
		bo->flags |= TEGRA_BO_BOTTOM_UP;

	return bo;

err_mmap:
	drm_gem_object_release(&bo->gem);
err_init:
	tegra_bo_destroy(drm, bo);
err_dma:
	kfree(bo);

	return ERR_PTR(err);
}

Example #3

File: gem.c Project: mikuhatsune001/linux2.6.32

static struct tegra_bo *tegra_bo_import(struct drm_device *drm,
					struct dma_buf *buf)
{
	struct dma_buf_attachment *attach;
	struct tegra_bo *bo;
	ssize_t size;
	int err;

	bo = kzalloc(sizeof(*bo), GFP_KERNEL);
	if (!bo)
		return ERR_PTR(-ENOMEM);

	host1x_bo_init(&bo->base, &tegra_bo_ops);
	size = round_up(buf->size, PAGE_SIZE);

	err = drm_gem_object_init(drm, &bo->gem, size);
	if (err < 0)
		goto free;

	err = drm_gem_create_mmap_offset(&bo->gem);
	if (err < 0)
		goto release;

	attach = dma_buf_attach(buf, drm->dev);
	if (IS_ERR(attach)) {
		err = PTR_ERR(attach);
		goto free_mmap;
	}

	get_dma_buf(buf);

	bo->sgt = dma_buf_map_attachment(attach, DMA_TO_DEVICE);
	if (!bo->sgt) {
		err = -ENOMEM;
		goto detach;
	}

	if (IS_ERR(bo->sgt)) {
		err = PTR_ERR(bo->sgt);
		goto detach;
	}

	if (bo->sgt->nents > 1) {
		err = -EINVAL;
		goto detach;
	}

	bo->paddr = sg_dma_address(bo->sgt->sgl);
	bo->gem.import_attach = attach;

	return bo;

detach:
	if (!IS_ERR_OR_NULL(bo->sgt))
		dma_buf_unmap_attachment(attach, bo->sgt, DMA_TO_DEVICE);

	dma_buf_detach(buf, attach);
	dma_buf_put(buf);
free_mmap:
	drm_gem_free_mmap_offset(&bo->gem);
release:
	drm_gem_object_release(&bo->gem);
free:
	kfree(bo);

	return ERR_PTR(err);
}