Hi Christian,
On Tue, 31 Mar 2020, 14:16 Daniel Vetter, daniel@ffwll.ch wrote:
On Mon, Mar 30, 2020 at 03:55:31PM +0200, Christian König wrote:
Add a peer2peer flag noting that the importer can deal with device resources which are not backed by pages.
Signed-off-by: Christian König christian.koenig@amd.com
On the series:
Acked-by: Daniel Vetter daniel.vetter@ffwll.ch
Fwiw, for the series, Acked-by: Sumit Semwal sumit.semwal@linaro.org
drivers/dma-buf/dma-buf.c | 2 ++ include/linux/dma-buf.h | 10 ++++++++++ 2 files changed, 12 insertions(+)
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index ccc9eda1bc28..570c923023e6 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -690,6 +690,8 @@ dma_buf_dynamic_attach(struct dma_buf *dmabuf,
struct device *dev,
attach->dev = dev; attach->dmabuf = dmabuf;
if (importer_ops)attach->peer2peer = importer_ops->allow_peer2peer; attach->importer_ops = importer_ops; attach->importer_priv = importer_priv;diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h index 1ade486fc2bb..82e0a4a64601 100644 --- a/include/linux/dma-buf.h +++ b/include/linux/dma-buf.h @@ -334,6 +334,14 @@ struct dma_buf {
- Attachment operations implemented by the importer.
*/ struct dma_buf_attach_ops {
/*** @allow_peer2peer:** If this is set to true the importer must be able to handle peer* resources without struct pages.*/bool allow_peer2peer;/** * @move_notify *@@ -362,6 +370,7 @@ struct dma_buf_attach_ops {
- @node: list of dma_buf_attachment, protected by dma_resv lock of the
dmabuf.
- @sgt: cached mapping.
- @dir: direction of cached mapping.
- @peer2peer: true if the importer can handle peer resources without
pages.
- @priv: exporter specific attachment data.
- @importer_ops: importer operations for this attachment, if provided
- dma_buf_map/unmap_attachment() must be called with the dma_resv lock
held.
@@ -382,6 +391,7 @@ struct dma_buf_attachment { struct list_head node; struct sg_table *sgt; enum dma_data_direction dir;
bool peer2peer; const struct dma_buf_attach_ops *importer_ops; void *importer_priv; void *priv;-- 2.17.1
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel