On 4/17/2018 8:06 AM, Xiao Wang wrote: > IFCVF driver > ============ > The IFCVF vDPA (vhost data path acceleration) driver provides support for the > Intel FPGA 100G VF (IFCVF). IFCVF's datapath is virtio ring compatible, it > works as a HW vhost backend which can send/receive packets to/from virtio > directly by DMA. Besides, it supports dirty page logging and device state > report/restore. This driver enables its vDPA functionality with live migration > feature. > > vDPA mode > ========= > IFCVF's vendor ID and device ID are same as that of virtio net pci device, > with its specific subsystem vendor ID and device ID. To let the device be > probed by IFCVF driver, adding "vdpa=1" parameter helps to specify that this > device is to be used in vDPA mode, rather than polling mode, virtio pmd will > skip when it detects this message. > > Container per device > ==================== > vDPA needs to create different containers for different devices, thus this > patch set adds some APIs in eal/vfio to support multiple container, e.g. > - rte_vfio_container_create > - rte_vfio_container_destroy > - rte_vfio_container_group_bind > - rte_vfio_container_group_unbind > > By this extension, a device can be put into a new specific container, rather > than the previous default container. > > Two APIs are added for IOMMU programming for a specified container: > - rte_vfio_container_dma_map > - rte_vfio_container_dma_unmap > > IFCVF vDPA details > ================== > Key vDPA driver ops implemented: > - ifcvf_dev_config: > Enable VF data path with virtio information provided by vhost lib, including > IOMMU programming to enable VF DMA to VM's memory, VFIO interrupt setup to > route HW interrupt to virtio driver, create notify relay thread to translate > virtio driver's kick to a MMIO write onto HW, HW queues configuration. > > This function gets called to set up HW data path backend when virtio driver > in VM gets ready. > > - ifcvf_dev_close: > Revoke all the setup in ifcvf_dev_config. > > This function gets called when virtio driver stops device in VM. > > Change log > ========== > v9: > - Rebase on master tree's HEAD. > - Fix compile error on 32-bit platform. > > v8: > - Rebase on HEAD. > - Move vfio_group definition back to eal_vfio.h. > - Return NULL when vfio group num/fd is not found, let caller handle that. > - Fix wrong API name in commit log. > - Rename bind/unbind function to rte_vfio_container_group_bind/unbind for > consistensy. > - Add note for rte_vfio_container_create and rte_vfio_dma_map and fix typo > in comment. > - Extract out the shared code snip of rte_vfio_dma_map and > rte_vfio_container_dma_map to avoid code duplication. So do for the unmap. > > v7: > - Rebase on HEAD. > - Split the vfio patch into 2 parts, one for data structure extension, one for > adding new API. > - Use static vfio_config array instead of dynamic alloating. > - Change rte_vfio_container_dma_map/unmap's parameters to use (va, iova, len). > > v6: > - Rebase on master branch. > - Document "vdpa" devarg in virtio documentation. > - Rename ifcvf config option to CONFIG_RTE_LIBRTE_IFCVF_VDPA_PMD for > consistensy, and add it into driver documentation. > - Add comments for ifcvf device ID. > - Minor code cleaning. > > v5: > - Fix compilation in BSD, remove the rte_vfio.h including in BSD. > > v4: > - Rebase on Zhihong's latest vDPA lib patch, with vDPA ops names change. > - Remove API "rte_vfio_get_group_fd", "rte_vfio_bind_group" will return the > fd. > - Align the vfio_cfg search internal APIs naming. > > v3: > - Add doc and release note for the new driver. > - Remove the vdev concept, make the driver as a PCI driver, it will get probed > by PCI bus driver. > - Rebase on the v4 vDPA lib patch, register a vDPA device instead of a engine. > - Remove the PCI API exposure accordingly. > - Move the MAX_VFIO_CONTAINERS definition to config file. > - Let virtio pmd skips when a virtio device needs to work in vDPA mode. > > v2: > - Rename function pci_get_kernel_driver_by_path to rte_pci_device_kdriver_name > to make the API generic cross Linux and BSD, make it as EXPERIMENTAL. > - Rebase on Zhihong's vDPA v3 patch set. > - Minor code cleanup on vfio extension. > > > Xiao Wang (5): > vfio: extend data structure for multi container > vfio: add multi container support > net/virtio: skip device probe in vdpa mode > net/ifcvf: add ifcvf vdpa driver > doc: add ifcvf driver document and release note
Series applied to dpdk-next-net/master, thanks.
