1 files changed, 37 insertions, 0 deletions

diff --git a/include/uapi/linux/fpga-dfl.h b/include/uapi/linux/fpga-dfl.h
index a3ccdfb115a5..2e324e515c41 100644
--- a/include/uapi/linux/fpga-dfl.h
+++ b/include/uapi/linux/fpga-dfl.h
@@ -114,6 +114,43 @@ struct dfl_fpga_port_region_info {
 
 #define DFL_FPGA_PORT_GET_REGION_INFO   _IO(DFL_FPGA_MAGIC, DFL_PORT_BASE + 2)
 
+/**
+ * DFL_FPGA_PORT_DMA_MAP - _IOWR(DFL_FPGA_MAGIC, DFL_PORT_BASE + 3,
+ *                                              struct dfl_fpga_port_dma_map)
+ *
+ * Map the dma memory per user_addr and length which are provided by caller.
+ * Driver fills the iova in provided struct afu_port_dma_map.
+ * This interface only accepts page-size aligned user memory for dma mapping.
+ * Return: 0 on success, -errno on failure.
+ */
+struct dfl_fpga_port_dma_map {
+        /* Input */
+        __u32 argsz;            /* Structure length */
+        __u32 flags;            /* Zero for now */
+        __u64 user_addr;        /* Process virtual address */
+        __u64 length;           /* Length of mapping (bytes)*/
+        /* Output */
+        __u64 iova;             /* IO virtual address */
+};
+
+#define DFL_FPGA_PORT_DMA_MAP           _IO(DFL_FPGA_MAGIC, DFL_PORT_BASE + 3)
+
+/**
+ * DFL_FPGA_PORT_DMA_UNMAP - _IOW(FPGA_MAGIC, PORT_BASE + 4,
+ *                                              struct dfl_fpga_port_dma_unmap)
+ *
+ * Unmap the dma memory per iova provided by caller.
+ * Return: 0 on success, -errno on failure.
+ */
+struct dfl_fpga_port_dma_unmap {
+        /* Input */
+        __u32 argsz;            /* Structure length */
+        __u32 flags;            /* Zero for now */
+        __u64 iova;             /* IO virtual address */
+};
+
+#define DFL_FPGA_PORT_DMA_UNMAP         _IO(DFL_FPGA_MAGIC, DFL_PORT_BASE + 4)
+
 /* IOCTLs for FME file descriptor */
 
 /**