| // SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB |
| /* Copyright (c) 2015 - 2021 Intel Corporation */ |
| #include "main.h" |
| #include "i40iw_hw.h" |
| #include <linux/net/intel/i40e_client.h> |
| |
| static struct i40e_client i40iw_client; |
| |
| /** |
| * i40iw_l2param_change - handle mss change |
| * @cdev_info: parent lan device information structure with data/ops |
| * @client: client for parameter change |
| * @params: new parameters from L2 |
| */ |
| static void i40iw_l2param_change(struct i40e_info *cdev_info, |
| struct i40e_client *client, |
| struct i40e_params *params) |
| { |
| struct irdma_l2params l2params = {}; |
| struct irdma_device *iwdev; |
| struct ib_device *ibdev; |
| |
| ibdev = ib_device_get_by_netdev(cdev_info->netdev, RDMA_DRIVER_IRDMA); |
| if (!ibdev) |
| return; |
| |
| iwdev = to_iwdev(ibdev); |
| |
| if (iwdev->vsi.mtu != params->mtu) { |
| l2params.mtu_changed = true; |
| l2params.mtu = params->mtu; |
| } |
| irdma_change_l2params(&iwdev->vsi, &l2params); |
| ib_device_put(ibdev); |
| } |
| |
| /** |
| * i40iw_close - client interface operation close for iwarp/uda device |
| * @cdev_info: parent lan device information structure with data/ops |
| * @client: client to close |
| * @reset: flag to indicate close on reset |
| * |
| * Called by the lan driver during the processing of client unregister |
| * Destroy and clean up the driver resources |
| */ |
| static void i40iw_close(struct i40e_info *cdev_info, struct i40e_client *client, |
| bool reset) |
| { |
| struct irdma_device *iwdev; |
| struct ib_device *ibdev; |
| |
| ibdev = ib_device_get_by_netdev(cdev_info->netdev, RDMA_DRIVER_IRDMA); |
| if (WARN_ON(!ibdev)) |
| return; |
| |
| iwdev = to_iwdev(ibdev); |
| if (reset) |
| iwdev->rf->reset = true; |
| |
| iwdev->iw_status = 0; |
| irdma_port_ibevent(iwdev); |
| ib_unregister_device_and_put(ibdev); |
| pr_debug("INIT: Gen1 PF[%d] close complete\n", PCI_FUNC(cdev_info->pcidev->devfn)); |
| } |
| |
| static void i40iw_request_reset(struct irdma_pci_f *rf) |
| { |
| struct i40e_info *cdev_info = rf->cdev; |
| |
| cdev_info->ops->request_reset(cdev_info, &i40iw_client, 1); |
| } |
| |
| static void i40iw_fill_device_info(struct irdma_device *iwdev, struct i40e_info *cdev_info) |
| { |
| struct irdma_pci_f *rf = iwdev->rf; |
| |
| rf->rdma_ver = IRDMA_GEN_1; |
| rf->gen_ops.request_reset = i40iw_request_reset; |
| rf->pcidev = cdev_info->pcidev; |
| rf->pf_id = cdev_info->fid; |
| rf->hw.hw_addr = cdev_info->hw_addr; |
| rf->cdev = cdev_info; |
| rf->msix_count = cdev_info->msix_count; |
| rf->msix_entries = cdev_info->msix_entries; |
| rf->limits_sel = 5; |
| rf->protocol_used = IRDMA_IWARP_PROTOCOL_ONLY; |
| rf->iwdev = iwdev; |
| |
| iwdev->init_state = INITIAL_STATE; |
| iwdev->rcv_wnd = IRDMA_CM_DEFAULT_RCV_WND_SCALED; |
| iwdev->rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE; |
| iwdev->netdev = cdev_info->netdev; |
| iwdev->vsi_num = 0; |
| } |
| |
| /** |
| * i40iw_open - client interface operation open for iwarp/uda device |
| * @cdev_info: parent lan device information structure with data/ops |
| * @client: iwarp client information, provided during registration |
| * |
| * Called by the lan driver during the processing of client register |
| * Create device resources, set up queues, pble and hmc objects and |
| * register the device with the ib verbs interface |
| * Return 0 if successful, otherwise return error |
| */ |
| static int i40iw_open(struct i40e_info *cdev_info, struct i40e_client *client) |
| { |
| struct irdma_l2params l2params = {}; |
| struct irdma_device *iwdev; |
| struct irdma_pci_f *rf; |
| int err = -EIO; |
| int i; |
| u16 qset; |
| u16 last_qset = IRDMA_NO_QSET; |
| |
| iwdev = ib_alloc_device(irdma_device, ibdev); |
| if (!iwdev) |
| return -ENOMEM; |
| |
| iwdev->rf = kzalloc(sizeof(*rf), GFP_KERNEL); |
| if (!iwdev->rf) { |
| ib_dealloc_device(&iwdev->ibdev); |
| return -ENOMEM; |
| } |
| |
| i40iw_fill_device_info(iwdev, cdev_info); |
| rf = iwdev->rf; |
| |
| if (irdma_ctrl_init_hw(rf)) { |
| err = -EIO; |
| goto err_ctrl_init; |
| } |
| |
| l2params.mtu = (cdev_info->params.mtu) ? cdev_info->params.mtu : IRDMA_DEFAULT_MTU; |
| for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) { |
| qset = cdev_info->params.qos.prio_qos[i].qs_handle; |
| l2params.up2tc[i] = cdev_info->params.qos.prio_qos[i].tc; |
| l2params.qs_handle_list[i] = qset; |
| if (last_qset == IRDMA_NO_QSET) |
| last_qset = qset; |
| else if ((qset != last_qset) && (qset != IRDMA_NO_QSET)) |
| iwdev->dcb_vlan_mode = true; |
| } |
| |
| if (irdma_rt_init_hw(iwdev, &l2params)) { |
| err = -EIO; |
| goto err_rt_init; |
| } |
| |
| err = irdma_ib_register_device(iwdev); |
| if (err) |
| goto err_ibreg; |
| |
| ibdev_dbg(&iwdev->ibdev, "INIT: Gen1 PF[%d] open success\n", |
| PCI_FUNC(rf->pcidev->devfn)); |
| |
| return 0; |
| |
| err_ibreg: |
| irdma_rt_deinit_hw(iwdev); |
| err_rt_init: |
| irdma_ctrl_deinit_hw(rf); |
| err_ctrl_init: |
| kfree(iwdev->rf); |
| ib_dealloc_device(&iwdev->ibdev); |
| |
| return err; |
| } |
| |
| /* client interface functions */ |
| static const struct i40e_client_ops i40e_ops = { |
| .open = i40iw_open, |
| .close = i40iw_close, |
| .l2_param_change = i40iw_l2param_change |
| }; |
| |
| static struct i40e_client i40iw_client = { |
| .ops = &i40e_ops, |
| .type = I40E_CLIENT_IWARP, |
| }; |
| |
| static int i40iw_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *id) |
| { |
| struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev, |
| struct i40e_auxiliary_device, |
| aux_dev); |
| struct i40e_info *cdev_info = i40e_adev->ldev; |
| |
| strncpy(i40iw_client.name, "irdma", I40E_CLIENT_STR_LENGTH); |
| i40e_client_device_register(cdev_info, &i40iw_client); |
| |
| return 0; |
| } |
| |
| static void i40iw_remove(struct auxiliary_device *aux_dev) |
| { |
| struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev, |
| struct i40e_auxiliary_device, |
| aux_dev); |
| struct i40e_info *cdev_info = i40e_adev->ldev; |
| |
| i40e_client_device_unregister(cdev_info); |
| } |
| |
| static const struct auxiliary_device_id i40iw_auxiliary_id_table[] = { |
| {.name = "i40e.iwarp", }, |
| {}, |
| }; |
| |
| MODULE_DEVICE_TABLE(auxiliary, i40iw_auxiliary_id_table); |
| |
| struct auxiliary_driver i40iw_auxiliary_drv = { |
| .name = "gen_1", |
| .id_table = i40iw_auxiliary_id_table, |
| .probe = i40iw_probe, |
| .remove = i40iw_remove, |
| }; |