dma-buf: add peer2peer flag (09606b54) · Commits · 戴 / test

drivers/dma-buf/dma-buf.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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;

+10 −0

Original line number	Diff line number	Diff line
		@@ -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;