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Commit 561464ea authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nouveau/bo: add helper functions for handling pinned+mapped buffers 



This is a common, awkward sequence.  Let's wrap it up!

Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 27cda223

drivers/gpu/drm/nouveau/nouveau_bo.h

+28 −0
Original line number Diff line number Diff line
@@ -105,4 +105,32 @@ nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo) 
	return ioptr;

}



static inline void

nouveau_bo_unmap_unpin_unref(struct nouveau_bo **pnvbo)

{

	if (*pnvbo) {

		nouveau_bo_unmap(*pnvbo);

		nouveau_bo_unpin(*pnvbo);

		nouveau_bo_ref(NULL, pnvbo);

	}

}



static inline int

nouveau_bo_new_pin_map(struct nouveau_cli *cli, u64 size, int align, u32 flags,

		       struct nouveau_bo **pnvbo)

{

	int ret = nouveau_bo_new(cli, size, align, flags,

				 0, 0, NULL, NULL, pnvbo);

	if (ret == 0) {

		ret = nouveau_bo_pin(*pnvbo, flags, true);

		if (ret == 0) {

			ret = nouveau_bo_map(*pnvbo);

			if (ret == 0)

				return ret;

			nouveau_bo_unpin(*pnvbo);

		}

		nouveau_bo_ref(NULL, pnvbo);

	}

	return ret;

}

#endif