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@xxxxxxx>
---
drivers/dma-buf/dma-buf.c | 1 +
include/linux/dma-buf.h | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index f23ff8355505..3ab49b492017 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -563,6 +563,7 @@ struct dma_buf_attachment *dma_buf_attach(const struct dma_buf_attach_info *info
attach->dev = info->dev;
attach->dmabuf = dmabuf;
+ attach->peer2peer = info->peer2peer;
attach->importer_priv = info->importer_priv;
attach->invalidate = info->invalidate;
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index a615b74e5894..d2746bdfe92c 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -346,6 +346,7 @@ struct dma_buf {
* @dmabuf: buffer for this attachment.
* @dev: device attached to the buffer.
* @node: list of dma_buf_attachment.
+ * @peer2peer: true if the importer can handle peer resources without pages.
* @priv: exporter specific attachment data.
* @importer_priv: importer specific attachment data.
*
@@ -362,6 +363,7 @@ struct dma_buf_attachment {
struct dma_buf *dmabuf;
struct device *dev;
struct list_head node;
+ bool peer2peer;
void *priv;
struct sg_table *sgt;
void *importer_priv;
@@ -427,6 +429,7 @@ struct dma_buf_export_info {
* struct dma_buf_attach_info - holds information needed to attach to a dma_buf
* @dmabuf: the exported dma_buf
* @dev: the device which wants to import the attachment
+ * @peer2peer: true if the importer can handle peer resources without pages
* @importer_priv: private data of importer to this attachment
* @invalidate: callback to use for invalidating mappings
*
@@ -436,6 +439,7 @@ struct dma_buf_export_info {
struct dma_buf_attach_info {
struct dma_buf *dmabuf;
struct device *dev;
+ bool peer2peer;
void *importer_priv;
void (*invalidate)(struct dma_buf_attachment *attach);
};
--
2.17.1
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