Commit d40326f4 authored by Thierry Reding's avatar Thierry Reding
Browse files

drm/tegra: prime: Add vmap support 



This is trivial to support since all GEM objects are mapped into kernel
space anyway.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 88759686

drivers/gpu/drm/tegra/gem.c

+14 −0
Original line number Diff line number Diff line
@@ -394,6 +394,18 @@ static int tegra_gem_prime_mmap(struct dma_buf *buf, struct vm_area_struct *vma) 
	return -EINVAL;

}



static void *tegra_gem_prime_vmap(struct dma_buf *buf)

{

	struct drm_gem_object *gem = buf->priv;

	struct tegra_bo *bo = to_tegra_bo(gem);



	return bo->vaddr;

}



static void tegra_gem_prime_vunmap(struct dma_buf *buf, void *vaddr)

{

}



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,
@@ -403,6 +415,8 @@ static const struct dma_buf_ops tegra_gem_prime_dmabuf_ops = { 
	.kmap = tegra_gem_prime_kmap,

	.kunmap = tegra_gem_prime_kunmap,

	.mmap = tegra_gem_prime_mmap,

	.vmap = tegra_gem_prime_vmap,

	.vunmap = tegra_gem_prime_vunmap,

};



struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,