diff options
Diffstat (limited to 'include/uapi/linux/fpga-dfl.h')
| -rw-r--r-- | include/uapi/linux/fpga-dfl.h | 37 |
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 */ /** |