On Tue, May 1, 2018 at 9:50 PM, Wu Hao <[email protected]> wrote: Hi Hao,
> From: Xiao Guangrong <[email protected]> > > User Accelerated Function Unit sub feature exposes the MMIO region of > the AFU. After valid PR bitstream is programmed and the port is enabled, > then this MMIO region could be accessed. > > This patch adds support to enumerate the AFU MMIO region and expose it > to userspace via mmap file operation. Below interfaces are exposed to user: > > Sysfs interface: > * /sys/class/fpga_region/<regionX>/<dfl-port.x>/afu_id > Read-only. Indicate which PR bitstream is programmed to this AFU. > > Ioctl interfaces: > * DFL_FPGA_PORT_GET_INFO > Provide info to userspace on the number of supported region. > Only UAFU region is supported now. > > * DFL_FPGA_PORT_GET_REGION_INFO > Provide region information, including access permission, region size, > offset from the start of device fd. > > Signed-off-by: Tim Whisonant <[email protected]> > Signed-off-by: Enno Luebbers <[email protected]> > Signed-off-by: Shiva Rao <[email protected]> > Signed-off-by: Christopher Rauer <[email protected]> > Signed-off-by: Xiao Guangrong <[email protected]> > Signed-off-by: Wu Hao <[email protected]> Acked-by: Alan Tull <[email protected]>
