On Wed, Jul 12, 2017 at 01:29:22AM -0400, Felix Kuehling wrote: > Signed-off-by: Felix Kuehling <[email protected]> > --- > drivers/gpu/drm/drm_prime.c | 25 +++++++++++++++++++++++++ > include/drm/drmP.h | 2 ++ > 2 files changed, 27 insertions(+) > > diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c > index 25aa455..b1f8445 100644 > --- a/drivers/gpu/drm/drm_prime.c > +++ b/drivers/gpu/drm/drm_prime.c > @@ -594,6 +594,31 @@ int drm_gem_prime_handle_to_fd(struct drm_device *dev, > EXPORT_SYMBOL(drm_gem_prime_handle_to_fd); > > /** > + * drm_gem_prime_dmabuf_to_object - try to cast dmabuf to GEM object > + * @dma_buf: dma-buf object to cast > + * @driver: driver that is the expected exporter of the dma-buf > + * > + * If @dma_buf represents a GEM object, this function return a pointer > + * to it. Optionally, if @driver is not NULL, it also checks that the > + * object was exported by @driver. Otherwise it returns NULL. > + */ > +struct drm_gem_object *drm_gem_prime_dmabuf_to_object(struct dma_buf > *dma_buf, > + struct drm_driver *driver) > +{ > + struct drm_gem_object *obj; > + > + if (dma_buf->ops != &drm_gem_prime_dmabuf_ops) > + return NULL; > + > + obj = dma_buf->priv; > + if (driver && obj->dev->driver != driver) > + return NULL; > + > + return obj; > +} > +EXPORT_SYMBOL(drm_gem_prime_dmabuf_to_object);
Reviewed-by: Daniel Vetter <[email protected]> Bonus points bikeshed: Would be sweet to use that helper in drm_prime.c itself, and iirc some drivers could use it too. -Daniel > + > +/** > * drm_gem_prime_import - helper library implementation of the import > callback > * @dev: drm_device to import into > * @dma_buf: dma-buf object to import > diff --git a/include/drm/drmP.h b/include/drm/drmP.h > index 6105c05..79c2b23 100644 > --- a/include/drm/drmP.h > +++ b/include/drm/drmP.h > @@ -767,6 +767,8 @@ extern struct dma_buf *drm_gem_prime_export(struct > drm_device *dev, > extern int drm_gem_prime_handle_to_fd(struct drm_device *dev, > struct drm_file *file_priv, uint32_t handle, uint32_t flags, > int *prime_fd); > +extern struct drm_gem_object *drm_gem_prime_dmabuf_to_object( > + struct dma_buf *dma_buf, struct drm_driver *driver); > extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev, > struct dma_buf *dma_buf); > extern int drm_gem_prime_fd_to_handle(struct drm_device *dev, > -- > 1.9.1 > > _______________________________________________ > dri-devel mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
