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->hw.hw_addr = cdev_info->hw_addr; 81 rf->cdev = cdev_info; 82 rf->msix_count = cdev_info->msix_count; 83 rf->msix_entries = cdev_info->msix_entries; 84 rf->limits_sel = 5; 85 rf->protocol_used = IRDMA_IWARP_PROTOCOL_ONLY; 86 rf->iwdev = iwdev; 87 88 iwdev->init_state = INITIAL_STATE; 89 iwdev->rcv_wnd = IRDMA_CM_DEFAULT_RCV_WND_SCALED; 90 iwdev->rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE; 91 iwdev->netdev = cdev_info->netdev; 92 iwdev->vsi_num = 0; 93 } 94 95 /** 96 * i40iw_open - client interface operation open for iwarp/uda device 97 * @cdev_info: parent lan device information structure with data/ops 98 * @client: iwarp client information, provided during registration 99 * 100 * Called by the lan driver during the processing of client register 101 * Create device resources, set up queues, pble and hmc objects and 102 * register the device with the ib verbs interface 103 * Return 0 if successful, otherwise return error 104 */ 105 static int i40iw_open(struct i40e_info *cdev_info, struct i40e_client *client) 106 { 107 struct irdma_l2params l2params = {}; 108 struct irdma_device *iwdev; 109 struct irdma_pci_f *rf; 110 int err = -EIO; 111 int i; 112 u16 qset; 113 u16 last_qset = IRDMA_NO_QSET; 114 115 iwdev = ib_alloc_device(irdma_device, ibdev); 116 if (!iwdev) 117 return -ENOMEM; 118 119 iwdev->rf = kzalloc(sizeof(*rf), GFP_KERNEL); 120 if (!iwdev->rf) { 121 ib_dealloc_device(&iwdev->ibdev); 122 return -ENOMEM; 123 } 124 125 i40iw_fill_device_info(iwdev, cdev_info); 126 rf = iwdev->rf; 127 128 if (irdma_ctrl_init_hw(rf)) { 129 err = -EIO; 130 goto err_ctrl_init; 131 } 132 133 l2params.mtu = (cdev_info->params.mtu) ? cdev_info->params.mtu : IRDMA_DEFAULT_MTU; 134 for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) { 135 qset = cdev_info->params.qos.prio_qos[i].qs_handle; 136 l2params.up2tc[i] = cdev_info->params.qos.prio_qos[i].tc; 137 l2params.qs_handle_list[i] = qset; 138 if (last_qset == IRDMA_NO_QSET) 139 last_qset = qset; 140 else if ((qset != last_qset) && (qset != IRDMA_NO_QSET)) 141 iwdev->dcb = true; 142 } 143 144 if (irdma_rt_init_hw(iwdev, &l2params)) { 145 err = -EIO; 146 goto err_rt_init; 147 } 148 149 err = irdma_ib_register_device(iwdev); 150 if (err) 151 goto err_ibreg; 152 153 ibdev_dbg(&iwdev->ibdev, "INIT: Gen1 PF[%d] open success\n", 154 PCI_FUNC(rf->pcidev->devfn)); 155 156 return 0; 157 158 err_ibreg: 159 irdma_rt_deinit_hw(iwdev); 160 err_rt_init: 161 irdma_ctrl_deinit_hw(rf); 162 err_ctrl_init: 163 kfree(iwdev->rf); 164 ib_dealloc_device(&iwdev->ibdev); 165 166 return err; 167 } 168 169 /* client interface functions */ 170 static const struct i40e_client_ops i40e_ops = { 171 .open = i40iw_open, 172 .close = i40iw_close, 173 .l2_param_change = i40iw_l2param_change 174 }; 175 176 static struct i40e_client i40iw_client = { 177 .ops = &i40e_ops, 178 .type = I40E_CLIENT_IWARP, 179 }; 180 181 static int i40iw_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *id) 182 { 183 struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev, 184 struct i40e_auxiliary_device, 185 aux_dev); 186 struct i40e_info *cdev_info = i40e_adev->ldev; 187 188 strncpy(i40iw_client.name, "irdma", I40E_CLIENT_STR_LENGTH); 189 i40e_client_device_register(cdev_info, &i40iw_client); 190 191 return 0; 192 } 193 194 static void i40iw_remove(struct auxiliary_device *aux_dev) 195 { 196 struct i40e_auxiliary_device *i40e_adev = container_of(aux_dev, 197 struct i40e_auxiliary_device, 198 aux_dev); 199 struct i40e_info *cdev_info = i40e_adev->ldev; 200 201 i40e_client_device_unregister(cdev_info); 202 } 203 204 static const struct auxiliary_device_id i40iw_auxiliary_id_table[] = { 205 {.name = "i40e.iwarp", }, 206 {}, 207 }; 208 209 MODULE_DEVICE_TABLE(auxiliary, i40iw_auxiliary_id_table); 210 211 struct auxiliary_driver i40iw_auxiliary_drv = { 212 .name = "gen_1", 213 .id_table = i40iw_auxiliary_id_table, 214 .probe = i40iw_probe, 215 .remove = i40iw_remove, 216 }; 217