On Tue, May 1, 2018 at 9:50 PM, Wu Hao <hao.wu@xxxxxxxxx> wrote: Hi Hao, > From: Xiao Guangrong <guangrong.xiao@xxxxxxxxxxxxxxx> > > 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 <tim.whisonant@xxxxxxxxx> > Signed-off-by: Enno Luebbers <enno.luebbers@xxxxxxxxx> > Signed-off-by: Shiva Rao <shiva.rao@xxxxxxxxx> > Signed-off-by: Christopher Rauer <christopher.rauer@xxxxxxxxx> > Signed-off-by: Xiao Guangrong <guangrong.xiao@xxxxxxxxxxxxxxx> > Signed-off-by: Wu Hao <hao.wu@xxxxxxxxx> Acked-by: Alan Tull <atull@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
