diff options
Diffstat (limited to 'drivers/infiniband/hw/irdma/ig3rdma_if.c')
| -rw-r--r-- | drivers/infiniband/hw/irdma/ig3rdma_if.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/irdma/ig3rdma_if.c b/drivers/infiniband/hw/irdma/ig3rdma_if.c new file mode 100644 index 000000000000..1bb42eb298ba --- /dev/null +++ b/drivers/infiniband/hw/irdma/ig3rdma_if.c @@ -0,0 +1,232 @@ +// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB +/* Copyright (c) 2023 - 2024 Intel Corporation */ + +#include "main.h" +#include <linux/net/intel/iidc_rdma_idpf.h> +#include "ig3rdma_hw.h" + +static void ig3rdma_idc_core_event_handler(struct iidc_rdma_core_dev_info *cdev_info, + struct iidc_rdma_event *event) +{ + struct irdma_pci_f *rf = auxiliary_get_drvdata(cdev_info->adev); + + if (*event->type & BIT(IIDC_RDMA_EVENT_WARN_RESET)) { + rf->reset = true; + rf->sc_dev.vchnl_up = false; + } +} + +int ig3rdma_vchnl_send_sync(struct irdma_sc_dev *dev, u8 *msg, u16 len, + u8 *recv_msg, u16 *recv_len) +{ + struct iidc_rdma_core_dev_info *cdev_info = dev_to_rf(dev)->cdev; + int ret; + + ret = idpf_idc_rdma_vc_send_sync(cdev_info, msg, len, recv_msg, + recv_len); + if (ret == -ETIMEDOUT) { + ibdev_err(&(dev_to_rf(dev)->iwdev->ibdev), + "Virtual channel Req <-> Resp completion timeout\n"); + dev->vchnl_up = false; + } + + return ret; +} + +static int ig3rdma_vchnl_init(struct irdma_pci_f *rf, + struct iidc_rdma_core_dev_info *cdev_info, + u8 *rdma_ver) +{ + struct iidc_rdma_priv_dev_info *idc_priv = cdev_info->iidc_priv; + struct irdma_vchnl_init_info virt_info; + u8 gen = rf->rdma_ver; + int ret; + + rf->vchnl_wq = alloc_ordered_workqueue("irdma-virtchnl-wq", 0); + if (!rf->vchnl_wq) + return -ENOMEM; + + mutex_init(&rf->sc_dev.vchnl_mutex); + + virt_info.is_pf = !idc_priv->ftype; + virt_info.hw_rev = gen; + virt_info.privileged = gen == IRDMA_GEN_2; + virt_info.vchnl_wq = rf->vchnl_wq; + ret = irdma_sc_vchnl_init(&rf->sc_dev, &virt_info); + if (ret) { + destroy_workqueue(rf->vchnl_wq); + return ret; + } + + *rdma_ver = rf->sc_dev.hw_attrs.uk_attrs.hw_rev; + + return 0; +} + +/** + * ig3rdma_request_reset - Request a reset + * @rf: RDMA PCI function + */ +static void ig3rdma_request_reset(struct irdma_pci_f *rf) +{ + ibdev_warn(&rf->iwdev->ibdev, "Requesting a reset\n"); + idpf_idc_request_reset(rf->cdev, IIDC_FUNC_RESET); +} + +static int ig3rdma_cfg_regions(struct irdma_hw *hw, + struct iidc_rdma_core_dev_info *cdev_info) +{ + struct iidc_rdma_priv_dev_info *idc_priv = cdev_info->iidc_priv; + struct pci_dev *pdev = cdev_info->pdev; + int i; + + switch (idc_priv->ftype) { + case IIDC_FUNCTION_TYPE_PF: + hw->rdma_reg.len = IG3_PF_RDMA_REGION_LEN; + hw->rdma_reg.offset = IG3_PF_RDMA_REGION_OFFSET; + break; + case IIDC_FUNCTION_TYPE_VF: + hw->rdma_reg.len = IG3_VF_RDMA_REGION_LEN; + hw->rdma_reg.offset = IG3_VF_RDMA_REGION_OFFSET; + break; + default: + return -ENODEV; + } + + hw->rdma_reg.addr = ioremap(pci_resource_start(pdev, 0) + hw->rdma_reg.offset, + hw->rdma_reg.len); + + if (!hw->rdma_reg.addr) + return -ENOMEM; + + hw->num_io_regions = le16_to_cpu(idc_priv->num_memory_regions); + hw->io_regs = kcalloc(hw->num_io_regions, + sizeof(struct irdma_mmio_region), GFP_KERNEL); + + if (!hw->io_regs) { + iounmap(hw->rdma_reg.addr); + return -ENOMEM; + } + + for (i = 0; i < hw->num_io_regions; i++) { + hw->io_regs[i].addr = + idc_priv->mapped_mem_regions[i].region_addr; + hw->io_regs[i].len = + le64_to_cpu(idc_priv->mapped_mem_regions[i].size); + hw->io_regs[i].offset = + le64_to_cpu(idc_priv->mapped_mem_regions[i].start_offset); + } + + return 0; +} + +static void ig3rdma_decfg_rf(struct irdma_pci_f *rf) +{ + struct irdma_hw *hw = &rf->hw; + + destroy_workqueue(rf->vchnl_wq); + kfree(hw->io_regs); + iounmap(hw->rdma_reg.addr); +} + +static int ig3rdma_cfg_rf(struct irdma_pci_f *rf, + struct iidc_rdma_core_dev_info *cdev_info) +{ + struct iidc_rdma_priv_dev_info *idc_priv = cdev_info->iidc_priv; + int err; + + rf->sc_dev.hw = &rf->hw; + rf->cdev = cdev_info; + rf->pcidev = cdev_info->pdev; + rf->hw.device = &rf->pcidev->dev; + rf->msix_count = idc_priv->msix_count; + rf->msix_entries = idc_priv->msix_entries; + + err = ig3rdma_vchnl_init(rf, cdev_info, &rf->rdma_ver); + if (err) + return err; + + err = ig3rdma_cfg_regions(&rf->hw, cdev_info); + if (err) { + destroy_workqueue(rf->vchnl_wq); + return err; + } + + rf->protocol_used = IRDMA_ROCE_PROTOCOL_ONLY; + rf->rsrc_profile = IRDMA_HMC_PROFILE_DEFAULT; + rf->rst_to = IRDMA_RST_TIMEOUT_HZ; + rf->gen_ops.request_reset = ig3rdma_request_reset; + rf->limits_sel = 7; + mutex_init(&rf->ah_tbl_lock); + + return 0; +} + +static int ig3rdma_core_probe(struct auxiliary_device *aux_dev, + const struct auxiliary_device_id *id) +{ + struct iidc_rdma_core_auxiliary_dev *idc_adev = + container_of(aux_dev, struct iidc_rdma_core_auxiliary_dev, adev); + struct iidc_rdma_core_dev_info *cdev_info = idc_adev->cdev_info; + struct irdma_pci_f *rf; + int err; + + rf = kzalloc(sizeof(*rf), GFP_KERNEL); + if (!rf) + return -ENOMEM; + + err = ig3rdma_cfg_rf(rf, cdev_info); + if (err) + goto err_cfg_rf; + + err = irdma_ctrl_init_hw(rf); + if (err) + goto err_ctrl_init; + + auxiliary_set_drvdata(aux_dev, rf); + + err = idpf_idc_vport_dev_ctrl(cdev_info, true); + if (err) + goto err_vport_ctrl; + + return 0; + +err_vport_ctrl: + irdma_ctrl_deinit_hw(rf); +err_ctrl_init: + ig3rdma_decfg_rf(rf); +err_cfg_rf: + kfree(rf); + + return err; +} + +static void ig3rdma_core_remove(struct auxiliary_device *aux_dev) +{ + struct iidc_rdma_core_auxiliary_dev *idc_adev = + container_of(aux_dev, struct iidc_rdma_core_auxiliary_dev, adev); + struct iidc_rdma_core_dev_info *cdev_info = idc_adev->cdev_info; + struct irdma_pci_f *rf = auxiliary_get_drvdata(aux_dev); + + idpf_idc_vport_dev_ctrl(cdev_info, false); + irdma_ctrl_deinit_hw(rf); + ig3rdma_decfg_rf(rf); + kfree(rf); +} + +static const struct auxiliary_device_id ig3rdma_core_auxiliary_id_table[] = { + {.name = "idpf.8086.rdma.core", }, + {}, +}; + +MODULE_DEVICE_TABLE(auxiliary, ig3rdma_core_auxiliary_id_table); + +struct iidc_rdma_core_auxiliary_drv ig3rdma_core_auxiliary_drv = { + .adrv = { + .name = "core", + .id_table = ig3rdma_core_auxiliary_id_table, + .probe = ig3rdma_core_probe, + .remove = ig3rdma_core_remove, + }, + .event_handler = ig3rdma_idc_core_event_handler, +}; |