This RFC patch series introduces RDMA RoCEv2 support for the Intel Infrastructure Processing Unit (IPU) E2000 line of products, referred to as GEN3 in the irdma provider. It supports both physical and virtual functions. The irdma driver communicates with the device Control Plane (CP) to discover capabilities and perform privileged operations through an RDMA-specific messaging interface built atop the Infrastructure Data-Plane Function (IDPF) mailbox and virtchannel protocol [1][2]. To support RDMA for E2000 product, the idpf driver requires the use of the Inter-Driver Communication (IDC) interface which is currently already in use between ice and irdma. With a second consumer, the IDC is generalized to support multiple consumers and ice, idpf and irdma are adapted to the new IDC definitions [2]. The IPU model can host one or more logical network endpoints called vPorts per PCI function that are flexibly associated with a physical port or an internal communication port. irdma exposes a verbs device per vPort. Other key highlights of this series as it pertains to GEN3 device include: - MMIO learning, RDMA capability negotiation and RDMA vectors discovery between idpf and CP - PCI core device level RDMA resource initialization via a GEN3 core auxiliary driver - Shared Receive Queue (SRQ) Support - Atomic Operations Support - Completion Queue Element (CQE) Error and Flush Handling - Push Page Support Feedback regarding any aspect of the series is highly welcome, but the series is submitted as an RFC specifically to get feedback around the IDC and RDMA virtual channel private interface to CP. Additionally, this series is currently based on the rdma-next tree [3] and includes netdev patches for review purposes. [1] https://elixir.bootlin.com/linux/latest/source/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c [2] https://github.com/oasis-tcs/idpf-specification/blob/main/idpf_specification.md [3] commit 346d2fc606a8 ("RDMA/efa: Add EFA 0xefa3 PCI ID") Christopher Bednarz (1): RDMA/irdma: Discover and set up GEN3 hardware register layout Dave Ertman (1): iidc/ice/irdma: Update IDC to support multiple consumers Faisal Latif (2): RDMA/irdma: Add SRQ support RDMA/irdma: Add Atomic Operations support Jay Bhat (1): RDMA/irdma: Add Push Page Support for GEN3 Joshua Hay (8): idpf: use reserved rdma vectors from control plane idpf: implement core rdma auxiliary dev create, init, and destroy idpf: prevent deadlock with irdma get link settings idpf: implement rdma vport auxiliary dev create, init, and destroy idpf: implement remaining idc rdma core callbacks and handlers idpf: use actual mbx receive payload length idpf: implement idc vport aux driver mtu change handler idpf: implement get lan mmio memory regions Krzysztof Czurylo (2): RDMA/irdma: Add GEN3 CQP support with deferred completions RDMA/irdma: Add GEN3 HW statistics support Mustafa Ismail (3): RDMA/irdma: Refactor GEN2 auxiliary driver RDMA/irdma: Add GEN3 core driver support RDMA/irdma: Introduce GEN3 vPort driver support Shiraz Saleem (7): RDMA/irdma: Add GEN3 support for AEQ and CEQ RDMA/irdma: Add GEN3 virtual QP1 support RDMA/irdma: Extend QP context programming for GEN3 RDMA/irdma: Support 64-byte CQEs and GEN3 CQE opcode decoding RDMA/irdma: Restrict Memory Window and CQE Timestamping to GEN3 RDMA/irdma: Extend CQE Error and Flush Handling for GEN3 Devices RDMA/irdma: Update Kconfig drivers/infiniband/hw/irdma/Kconfig | 7 +- drivers/infiniband/hw/irdma/Makefile | 4 + drivers/infiniband/hw/irdma/ctrl.c | 1312 ++++++++++++++++++++-- drivers/infiniband/hw/irdma/defs.h | 243 ++-- drivers/infiniband/hw/irdma/hmc.c | 18 +- drivers/infiniband/hw/irdma/hmc.h | 19 +- drivers/infiniband/hw/irdma/hw.c | 349 +++--- drivers/infiniband/hw/irdma/i40iw_hw.c | 2 + drivers/infiniband/hw/irdma/i40iw_hw.h | 2 + drivers/infiniband/hw/irdma/i40iw_if.c | 3 + drivers/infiniband/hw/irdma/icrdma_hw.c | 3 + drivers/infiniband/hw/irdma/icrdma_hw.h | 5 +- drivers/infiniband/hw/irdma/icrdma_if.c | 267 +++++ drivers/infiniband/hw/irdma/ig3rdma_hw.c | 173 +++ drivers/infiniband/hw/irdma/ig3rdma_hw.h | 29 + drivers/infiniband/hw/irdma/ig3rdma_if.c | 279 +++++ drivers/infiniband/hw/irdma/irdma.h | 21 +- drivers/infiniband/hw/irdma/main.c | 323 ++---- drivers/infiniband/hw/irdma/main.h | 40 +- drivers/infiniband/hw/irdma/osdep.h | 4 +- drivers/infiniband/hw/irdma/pble.c | 20 +- drivers/infiniband/hw/irdma/protos.h | 1 + drivers/infiniband/hw/irdma/type.h | 227 +++- drivers/infiniband/hw/irdma/uda_d.h | 5 +- drivers/infiniband/hw/irdma/uk.c | 303 ++++- drivers/infiniband/hw/irdma/user.h | 268 ++++- drivers/infiniband/hw/irdma/utils.c | 155 ++- drivers/infiniband/hw/irdma/verbs.c | 911 +++++++++++++-- drivers/infiniband/hw/irdma/verbs.h | 51 + drivers/infiniband/hw/irdma/virtchnl.c | 654 +++++++++++ drivers/infiniband/hw/irdma/virtchnl.h | 189 ++++ drivers/net/ethernet/intel/ice/devlink/devlink.c | 41 +- drivers/net/ethernet/intel/ice/ice.h | 6 +- drivers/net/ethernet/intel/ice/ice_dcb_lib.c | 46 +- drivers/net/ethernet/intel/ice/ice_dcb_lib.h | 4 + drivers/net/ethernet/intel/ice/ice_ethtool.c | 8 +- drivers/net/ethernet/intel/ice/ice_idc.c | 245 ++-- drivers/net/ethernet/intel/ice/ice_idc_int.h | 5 +- drivers/net/ethernet/intel/ice/ice_main.c | 18 +- drivers/net/ethernet/intel/idpf/Makefile | 1 + drivers/net/ethernet/intel/idpf/idpf.h | 104 +- drivers/net/ethernet/intel/idpf/idpf_controlq.h | 13 +- drivers/net/ethernet/intel/idpf/idpf_dev.c | 46 +- drivers/net/ethernet/intel/idpf/idpf_ethtool.c | 17 +- drivers/net/ethernet/intel/idpf/idpf_idc.c | 474 ++++++++ drivers/net/ethernet/intel/idpf/idpf_lib.c | 89 +- drivers/net/ethernet/intel/idpf/idpf_main.c | 36 +- drivers/net/ethernet/intel/idpf/idpf_mem.h | 8 +- drivers/net/ethernet/intel/idpf/idpf_txrx.h | 1 + drivers/net/ethernet/intel/idpf/idpf_vf_dev.c | 42 +- drivers/net/ethernet/intel/idpf/idpf_virtchnl.c | 201 +++- drivers/net/ethernet/intel/idpf/idpf_virtchnl.h | 3 + drivers/net/ethernet/intel/idpf/virtchnl2.h | 51 +- include/linux/net/intel/idc_rdma.h | 138 +++ include/linux/net/intel/iidc.h | 107 -- include/linux/net/intel/iidc_rdma.h | 61 + include/uapi/rdma/irdma-abi.h | 17 +- 57 files changed, 6562 insertions(+), 1107 deletions(-) create mode 100644 drivers/infiniband/hw/irdma/icrdma_if.c create mode 100644 drivers/infiniband/hw/irdma/ig3rdma_hw.c create mode 100644 drivers/infiniband/hw/irdma/ig3rdma_hw.h create mode 100644 drivers/infiniband/hw/irdma/ig3rdma_if.c create mode 100644 drivers/infiniband/hw/irdma/virtchnl.c create mode 100644 drivers/infiniband/hw/irdma/virtchnl.h create mode 100644 drivers/net/ethernet/intel/idpf/idpf_idc.c create mode 100644 include/linux/net/intel/idc_rdma.h delete mode 100644 include/linux/net/intel/iidc.h create mode 100644 include/linux/net/intel/iidc_rdma.h -- 1.8.3.1
