summaryrefslogtreecommitdiffstats
path: root/drivers/fpga/dfl-afu-main.c
AgeCommit message (Collapse)AuthorFilesLines
2018-07-15fpga: dfl: afu: add DFL_FPGA_PORT_DMA_MAP/UNMAP ioctls supportWu Hao1-1/+60
DMA memory regions are required for Accelerated Function Unit (AFU) usage. These two ioctls allow user space applications to map user memory regions for dma, and unmap them after use. Iova is returned from driver to user space application via DFL_FPGA_PORT_DMA_MAP ioctl. Application needs to unmap it after use, otherwise, driver will unmap them in device file release operation. Each AFU has its own rb tree to keep track of its mapped DMA regions. Ioctl interfaces: * DFL_FPGA_PORT_DMA_MAP Do the dma mapping per user_addr and length provided by user. Return iova in provided struct dfl_fpga_port_dma_map. * DFL_FPGA_PORT_DMA_UNMAP Unmap the dma region per iova provided by user. Signed-off-by: Tim Whisonant <tim.whisonant@intel.com> Signed-off-by: Enno Luebbers <enno.luebbers@intel.com> Signed-off-by: Shiva Rao <shiva.rao@intel.com> Signed-off-by: Christopher Rauer <christopher.rauer@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-15fpga: dfl: afu: add afu sub feature supportXiao Guangrong1-6/+213
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@intel.com> Signed-off-by: Enno Luebbers <enno.luebbers@intel.com> Signed-off-by: Shiva Rao <shiva.rao@intel.com> Signed-off-by: Christopher Rauer <christopher.rauer@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-15fpga: dfl: afu: add DFL_FPGA_GET_API_VERSION/CHECK_EXTENSION ioctls supportWu Hao1-0/+11
DFL_FPGA_GET_API_VERSION and DFL_FPGA_CHECK_EXTENSION ioctls are common ones which need to be supported by all feature devices drivers including FME and AFU. This patch implements above 2 ioctls in FPGA Accelerated Function Unit (AFU) driver. Signed-off-by: Tim Whisonant <tim.whisonant@intel.com> Signed-off-by: Enno Luebbers <enno.luebbers@intel.com> Signed-off-by: Shiva Rao <shiva.rao@intel.com> Signed-off-by: Christopher Rauer <christopher.rauer@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Acked-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-15fpga: dfl: afu: add header sub feature supportWu Hao1-1/+78
The port header register set is always present for port, it is mainly for capability, control and status of the ports that AFU connected to. This patch implements header sub feature support. Below user interfaces are created by this patch. Sysfs interface: * /sys/class/fpga_region/<regionX>/<dfl-port.x>/id Read-only. Port ID. Ioctl interface: * DFL_FPGA_PORT_RESET Reset the FPGA Port and its AFU. Signed-off-by: Tim Whisonant <tim.whisonant@intel.com> Signed-off-by: Enno Luebbers <enno.luebbers@intel.com> Signed-off-by: Shiva Rao <shiva.rao@intel.com> Signed-off-by: Christopher Rauer <christopher.rauer@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-15fpga: dfl: afu: add port ops supportWu Hao1-1/+121
This patch registers the port ops into the global list in the DFL framework, and it allows other modules to use the port ops. And This patch includes the implementation of the get_id and enable_set ops too. Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-15fpga: dfl: add FPGA Accelerated Function Unit driver basic frameworkWu Hao1-0/+162
On DFL FPGA devices, the Accelerated Function Unit (AFU), can be reprogrammed for different functions. It connects to the FPGA infrastructure (static FPGA region) via a Port. Port CSRs are implemented separately from the AFU CSRs to provide control and status of the Port. Once valid PR bitstream is programmed into the AFU, it allows access to the AFU CSRs in the AFU MMIO space. This patch only implements basic driver framework for AFU, including device file operation framework. Signed-off-by: Tim Whisonant <tim.whisonant@intel.com> Signed-off-by: Enno Luebbers <enno.luebbers@intel.com> Signed-off-by: Shiva Rao <shiva.rao@intel.com> Signed-off-by: Christopher Rauer <christopher.rauer@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>