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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Aug 2025 05:39:15.8165 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e822cefb-4383-4fca-77ca-08dddaf4e832 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DS3PEPF0000C37A.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM3PR12MB9352 This patchset introduces an RDMA driver for the AMD Pensando adapter. An AMD Pensando Ethernet device with RDMA capabilities extends its functionality through an auxiliary device. The first 6 patches of the series modify the ionic Ethernet driver to support the RDMA driver. The ionic RDMA driver implementation is split into the remaining 8 patches. The user-mode of the driver is being reviewed at: https://github.com/linux-rdma/rdma-core/pull/1620 v4->v5 - Updated documentation - Fixed error path in aux device creation v3->v4 - Used xa lock instead of rcu lock for qp and cq access - Removed empty labels - Improved comments - Removed unwanted warning and error prints. v2->v3 - Used IDA for resource id allocation - Fixed lockdep warning - Removed rw locks around xarrays - Used rdma_user_mmap_* APIs for mappings - Removed uverbs_cmd_mask - Registered main ib ops at once - Fixed sparse checks - Fixed make htmldocs error v1->v2 - Removed netdev references from ionic RDMA driver - Moved to ionic_lif* instead of void* to convey information between aux devices and drivers Abhijit Gangurde (14): net: ionic: Create an auxiliary device for rdma driver net: ionic: Update LIF identity with additional RDMA capabilities net: ionic: Export the APIs from net driver to support device commands net: ionic: Provide RDMA reset support for the RDMA driver net: ionic: Provide interrupt allocation support for the RDMA driver net: ionic: Provide doorbell and CMB region information RDMA: Add IONIC to rdma_driver_id definition RDMA/ionic: Register auxiliary module for ionic ethernet adapter RDMA/ionic: Create device queues to support admin operations RDMA/ionic: Register device ops for control path RDMA/ionic: Register device ops for datapath RDMA/ionic: Register device ops for miscellaneous functionality RDMA/ionic: Implement device stats ops RDMA/ionic: Add Makefile/Kconfig to kernel build environment .../device_drivers/ethernet/index.rst | 1 + .../ethernet/pensando/ionic.rst | 10 + .../ethernet/pensando/ionic_rdma.rst | 52 + MAINTAINERS | 9 + drivers/infiniband/Kconfig | 1 + drivers/infiniband/hw/Makefile | 1 + drivers/infiniband/hw/ionic/Kconfig | 15 + drivers/infiniband/hw/ionic/Makefile | 9 + drivers/infiniband/hw/ionic/ionic_admin.c | 1228 ++++++++ .../infiniband/hw/ionic/ionic_controlpath.c | 2679 +++++++++++++++++ drivers/infiniband/hw/ionic/ionic_datapath.c | 1392 +++++++++ drivers/infiniband/hw/ionic/ionic_fw.h | 1029 +++++++ drivers/infiniband/hw/ionic/ionic_hw_stats.c | 484 +++ drivers/infiniband/hw/ionic/ionic_ibdev.c | 452 +++ drivers/infiniband/hw/ionic/ionic_ibdev.h | 517 ++++ drivers/infiniband/hw/ionic/ionic_lif_cfg.c | 111 + drivers/infiniband/hw/ionic/ionic_lif_cfg.h | 66 + drivers/infiniband/hw/ionic/ionic_pgtbl.c | 143 + drivers/infiniband/hw/ionic/ionic_queue.c | 52 + drivers/infiniband/hw/ionic/ionic_queue.h | 234 ++ drivers/infiniband/hw/ionic/ionic_res.h | 154 + drivers/net/ethernet/pensando/Kconfig | 1 + drivers/net/ethernet/pensando/ionic/Makefile | 2 +- drivers/net/ethernet/pensando/ionic/ionic.h | 7 - .../net/ethernet/pensando/ionic/ionic_api.h | 131 + .../net/ethernet/pensando/ionic/ionic_aux.c | 102 + .../net/ethernet/pensando/ionic/ionic_aux.h | 10 + .../ethernet/pensando/ionic/ionic_bus_pci.c | 7 + .../net/ethernet/pensando/ionic/ionic_dev.c | 270 +- .../net/ethernet/pensando/ionic/ionic_dev.h | 28 +- .../net/ethernet/pensando/ionic/ionic_if.h | 118 +- .../net/ethernet/pensando/ionic/ionic_lif.c | 47 +- .../net/ethernet/pensando/ionic/ionic_lif.h | 3 + .../net/ethernet/pensando/ionic/ionic_main.c | 4 +- include/uapi/rdma/ib_user_ioctl_verbs.h | 1 + include/uapi/rdma/ionic-abi.h | 115 + 36 files changed, 9421 insertions(+), 64 deletions(-) create mode 100644 Documentation/networking/device_drivers/ethernet/pensando/ionic_rdma.rst create mode 100644 drivers/infiniband/hw/ionic/Kconfig create mode 100644 drivers/infiniband/hw/ionic/Makefile create mode 100644 drivers/infiniband/hw/ionic/ionic_admin.c create mode 100644 drivers/infiniband/hw/ionic/ionic_controlpath.c create mode 100644 drivers/infiniband/hw/ionic/ionic_datapath.c create mode 100644 drivers/infiniband/hw/ionic/ionic_fw.h create mode 100644 drivers/infiniband/hw/ionic/ionic_hw_stats.c create mode 100644 drivers/infiniband/hw/ionic/ionic_ibdev.c create mode 100644 drivers/infiniband/hw/ionic/ionic_ibdev.h create mode 100644 drivers/infiniband/hw/ionic/ionic_lif_cfg.c create mode 100644 drivers/infiniband/hw/ionic/ionic_lif_cfg.h create mode 100644 drivers/infiniband/hw/ionic/ionic_pgtbl.c create mode 100644 drivers/infiniband/hw/ionic/ionic_queue.c create mode 100644 drivers/infiniband/hw/ionic/ionic_queue.h create mode 100644 drivers/infiniband/hw/ionic/ionic_res.h create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_api.h create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_aux.c create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_aux.h create mode 100644 include/uapi/rdma/ionic-abi.h base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585 -- 2.43.0