Cc: Alex Williamson <[email protected]>
Cc: Cédric Le Goater <[email protected]>
Signed-off-by: Vivek Kasireddy <[email protected]>
---
linux-headers/linux/vfio.h | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
index 4d96d1fc12..bc11ca3663 100644
--- a/linux-headers/linux/vfio.h
+++ b/linux-headers/linux/vfio.h
@@ -1478,6 +1478,31 @@ struct vfio_device_feature_bus_master {
};
#define VFIO_DEVICE_FEATURE_BUS_MASTER 10
+/**
+ * Upon VFIO_DEVICE_FEATURE_GET create a dma_buf fd for the
+ * regions selected.
+ *
+ * open_flags are the typical flags passed to open(2), eg O_RDWR, O_CLOEXEC,
+ * etc. offset/length specify a slice of the region to create the dmabuf from.
+ * nr_ranges is the total number of (P2P DMA) ranges that comprise the dmabuf.
+ *
+ * Return: The fd number on success, -1 and errno is set on failure.
+ */
+#define VFIO_DEVICE_FEATURE_DMA_BUF 11
+
+struct vfio_region_dma_range {
+ __u64 offset;
+ __u64 length;
+};
+
+struct vfio_device_feature_dma_buf {
+ __u32 region_index;
+ __u32 open_flags;
+ __u32 flags;
+ __u32 nr_ranges;
+ struct vfio_region_dma_range dma_ranges[];
+};
+
/* -------- API for Type1 VFIO IOMMU -------- */
/**
--
2.50.1
