1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB 2 /* Copyright (c) 2015 - 2021 Intel Corporation */ 3 #include "main.h" 4 #include "i40iw_hw.h" 5 #include <linux/net/intel/i40e_client.h> 6 7 static struct i40e_client i40iw_client; 8 9 /** 10 * i40iw_l2param_change - handle mss change 11 * @cdev_info: parent lan device information structure with data/ops 12 * @client: client for parameter change 13 * @params: new parameters from L2 14 */ 15 static void i40iw_l2param_change(struct i40e_info *cdev_info, 16 struct i40e_client *client, 17 struct i40e_params *params) 18 { 19 struct irdma_l2params l2params = {}; 20 struct irdma_device *iwdev; 21 struct ib_device *ibdev; 22 23 ibdev = ib_device_get_by_netdev(cdev_info->netdev, RDMA_DRIVER_IRDMA); 24 if (!ibdev) 25 return; 26 27 iwdev = to_iwdev(ibdev); 28 29 if (iwdev->vsi.mtu != params->mtu) { 30 l2params.mtu_changed = true; 31 l2params.mtu = params->mtu; 32 } 33 irdma_change_l2params(&iwdev->vsi, &l2params); 34 ib_device_put(ibdev); 35 } 36 37 /** 38 * i40iw_close - client interface operation close for iwarp/uda device 39 * @cdev_info: parent lan device information structure with data/ops 40 * @client: client to close 41 * @reset: flag to indicate close on reset 42 * 43 * Called by the lan driver during the processing of client unregister 44 * Destroy and clean up the driver resources 45 */ 46 static void i40iw_close(struct i40e_info *cdev_info, struct i40e_client *client, 47 bool reset) 48 { 49 struct irdma_device *iwdev; 50 struct ib_device *ibdev; 51 52 ibdev = ib_device_get_by_netdev(cdev_info->netdev, RDMA_DRIVER_IRDMA); 53 if (WARN_ON(!ibdev)) 54 return; 55 56 iwdev = to_iwdev(ibdev); 57 if (reset) 58 iwdev->rf->reset = true; 59 60 iwdev->iw_status = 0; 61 irdma_port_ibevent(iwdev); 62 ib_unregister_device_and_put(ibdev); 63 pr_debug("INIT: Gen1 PF[%d] close complete\n", PCI_FUNC(cdev_info->pcidev->devfn)); 64 } 65 66 static void i40iw_request_reset(struct irdma_pci_f *rf) 67 { 68 struct i40e_info *cdev_info = rf->cdev; 69 70 cdev_info->ops->request_reset(cdev_info, &i40iw_client, 1); 71 } 72 73 static void i40iw_fill_device_info(struct irdma_device *iwdev, struct i40e_info *cdev_info) 74 { 75 struct irdma_pci_f *rf = iwdev->rf; 76 77 rf->rdma_ver = IRDMA_GEN_1; 78 rf->gen_ops.request_reset = i40iw_request_reset; 79 rf->pcidev = cdev_info->pcidev; 80 rf->pf_id = cdev_info->fid; 81 rf->hw.hw_addr = cdev_info->hw_addr; 82 rf->cdev = cdev_info; 83 rf->msix_count = cdev_info->msix_count; 84 rf->msix_entries = cdev_info->msix_entries; 85 rf->limits_sel = 5; 86 rf->protocol_used = IRDMA_IWARP_PROTOCOL_ONLY; 87 rf->iwdev = iwdev; 88 89 iwdev->init_state = INITIAL_STATE; 90 iwdev->rcv_wnd = IRDMA_CM_DEFAULT_RCV_WND_SCALED; 91 iwdev->rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE; 92 iwdev->netdev = cdev_info->netdev; 93 iwdev->vsi_num = 0; 94 } 95 96 /** 97 * i40iw_open - client interface operation open for iwarp/uda device 98 * @cdev_info: parent lan device information structure with data/ops 99 * @client: iwarp client information, provided during registration 100 * 101 * Called by the lan driver during the processing of client register 102 * Create device resources, set up queues, pble and hmc objects and 103 * register the device with the ib verbs interface 104 * Return 0 if successful, otherwise return error 105 */ 106 static int i40iw_open(struct i40e_info *cdev_info, struct i40e_client *client) 107 { 108 struct irdma_l2params l2params = {}; 109 struct irdma_device *iwdev; 110 struct irdma_pci_f *rf; 111 int err = -EIO; 112 int i; 113 u16 qset; 114 u16 last_qset = IRDMA_NO_QSET; 115 116 iwdev = ib_alloc_device(irdma_device, ibdev); 117 if (!iwdev) 118 return -ENOMEM; 119 120 iwdev->rf = kzalloc(sizeof(*rf), GFP_KERNEL); 121 if (!iwdev->rf) { 122 ib_dealloc_device(&iwdev->ibdev); 123 return -ENOMEM; 124 } 125 126 i40iw_fill_device_info(iwdev, cdev_info); 127 rf = iwdev->rf; 128 129 if (irdma_ctrl_init_hw(rf)) { 130 err = -EIO; 131 goto err_ctrl_init; 132 } 133 134 l2params.mtu = (cdev_info->params.mtu) ? cdev_info->params.mtu : IRDMA_DEFAULT_MTU; 135 for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) { 136 qset = cdev_info->params.qos.prio_qos[i].qs_handle; 137 l2params.up2tc[i] = cdev_info->params.qos.prio_qos[i].tc; 138 l2params.qs_handle_list[i] = qset; 139 if (last_qset == IRDMA_NO_QSET) 140 last_qset = qset; 141 else if ((qset != last_qset) && (qset != IRDMA_NO_QSET)) 142 iwdev->dcb_vlan_mode = true; 143 } 144 145 if (irdma_rt_init_hw(iwdev, &l2params)) { 146 err = -EIO; 147 goto err_rt_init; 148 } 149 150 err = irdma_ib_register_device(iwdev); 151 if (err) 152 goto err_ibreg; 153 154 ibdev_dbg(&iwdev->ibdev, "INIT: Gen1 PF[%d] open success\n", 155 PCI_FUNC(rf->pcidev->devfn)); 156 157 return 0; 158 159 err_ibreg: 160 irdma_rt_deinit_hw(iwdev); 161 err_rt_init: 162 irdma_ctrl_deinit_hw(rf); 163 err_ctrl_init: 164 kfree(iwdev->rf); 165 ib_dealloc_device(&iwdev->ibdev); 166 167 return err; 168 } 169 170 /* client interface functions */ 171 static const struct i40e_client_ops i40e_ops = { 172 .open = i40iw_open, 173 .close = i40iw_close, 174 .l2_param_change = i40iw_l2param_change 175 }; 176 177 static struct i40e_client i40iw_client = { 178 .ops = &i40e_ops, 179 .type = I40E_CLIENT_IWARP, 180 }; 181 182 static int i40iw_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *id) 183 { 184 struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev, 185 struct i40e_auxiliary_device, 186 aux_dev); 187 struct i40e_info *cdev_info = i40e_adev->ldev; 188 189 strscpy_pad(i40iw_client.name, "irdma", I40E_CLIENT_STR_LENGTH); 190 i40e_client_device_register(cdev_info, &i40iw_client); 191 192 return 0; 193 } 194 195 static void i40iw_remove(struct auxiliary_device *aux_dev) 196 { 197 struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev, 198 struct i40e_auxiliary_device, 199 aux_dev); 200 struct i40e_info *cdev_info = i40e_adev->ldev; 201 202 i40e_client_device_unregister(cdev_info); 203 } 204 205 static const struct auxiliary_device_id i40iw_auxiliary_id_table[] = { 206 {.name = "i40e.iwarp", }, 207 {}, 208 }; 209 210 MODULE_DEVICE_TABLE(auxiliary, i40iw_auxiliary_id_table); 211 212 struct auxiliary_driver i40iw_auxiliary_drv = { 213 .name = "gen_1", 214 .id_table = i40iw_auxiliary_id_table, 215 .probe = i40iw_probe, 216 .remove = i40iw_remove, 217 }; 218