diff options
Diffstat (limited to 'drivers/gpu/drm/tegra')
| -rw-r--r-- | drivers/gpu/drm/tegra/gem.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index 8fc5860ab19a..8b0b4ff64bb4 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -568,6 +568,34 @@ static void tegra_gem_prime_release(struct dma_buf *buf) drm_gem_dmabuf_release(buf); } +static int tegra_gem_prime_begin_cpu_access(struct dma_buf *buf, + enum dma_data_direction direction) +{ + struct drm_gem_object *gem = buf->priv; + struct tegra_bo *bo = to_tegra_bo(gem); + struct drm_device *drm = gem->dev; + + if (bo->pages) + dma_sync_sg_for_cpu(drm->dev, bo->sgt->sgl, bo->sgt->nents, + DMA_FROM_DEVICE); + + return 0; +} + +static int tegra_gem_prime_end_cpu_access(struct dma_buf *buf, + enum dma_data_direction direction) +{ + struct drm_gem_object *gem = buf->priv; + struct tegra_bo *bo = to_tegra_bo(gem); + struct drm_device *drm = gem->dev; + + if (bo->pages) + dma_sync_sg_for_device(drm->dev, bo->sgt->sgl, bo->sgt->nents, + DMA_TO_DEVICE); + + return 0; +} + static void *tegra_gem_prime_kmap_atomic(struct dma_buf *buf, unsigned long page) { @@ -618,6 +646,8 @@ static const struct dma_buf_ops tegra_gem_prime_dmabuf_ops = { .map_dma_buf = tegra_gem_prime_map_dma_buf, .unmap_dma_buf = tegra_gem_prime_unmap_dma_buf, .release = tegra_gem_prime_release, + .begin_cpu_access = tegra_gem_prime_begin_cpu_access, + .end_cpu_access = tegra_gem_prime_end_cpu_access, .map_atomic = tegra_gem_prime_kmap_atomic, .unmap_atomic = tegra_gem_prime_kunmap_atomic, .map = tegra_gem_prime_kmap, |