On 5/8/2023 12:18 PM, Nipun Gupta wrote: > It uses sysfs interface and the vfio-cdx driver to discover > and initialize the CDX devices. > > The CDX bus and VFIO support is available at Xilinx open source tree: > https://github.com/Xilinx/linux-xlnx (drivers/cdx/ and drivers/vfio/cdx) > > Linux CDX bus patches has been added into linux next: > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/drivers/cdx > > VFIO patches are also submitted in upstream: > https://www.spinics.net/lists/kvm/msg310623.html > > CDX is a Hardware Architecture designed for AMD FPGA devices. It > consists of mechanism for interaction between FPGA, Firmware and > the APUs (Application CPUs). > Firmware resides on RPU (Realtime CPUs) which interacts with > the FPGA program manager and the APUs. The RPU provides memory-mapped > interface (RPU if) which is used to communicate with APUs. > > VFIO CDX driver provides the CDX device resources like MMIO and interrupts > to map to user-space. DPDK CDX bus uses sysfs interface and the vfio-cdx > driver to discover and initialize the CDX devices for user-space > applications. > > Changes v3->v4: > - removed platform specific patch (adding config for ARM CDX) > from this series > > Changes v2->v3: > - merged cdx bus compilation enablement in the first patch > - fixed issue reported by check-git-log.sh > - updated release notes > - updated offset to uint64_t instead of off_t in cdx_map_resource > > Changes v1->v2: > - Moved file rte_cdx_bus.h to internal bus_cdx_driver.h > and added this file to deivce_cdx_headers > - Moved cdx.h to private.h > - Removed rte_ prefix from the static symbols in .c files. > > Changes RFC->v1: > - Marked few API's as internal which were not required > to be provided to user. > > Nipun Gupta (4): > bus/cdx: introduce cdx bus > bus/cdx: add DMA map and unmap support > bus/cdx: add support for MSI > bus/cdx: support plug unplug and dev iterator
For series, Acked-by: Ferruh Yigit <ferruh.yi...@amd.com>
