1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Copyright (C) 2023 Intel Corporation */ 3 4 #include "idpf.h" 5 #include "idpf_devids.h" 6 #include "idpf_virtchnl.h" 7 8 #define DRV_SUMMARY "Intel(R) Infrastructure Data Path Function Linux Driver" 9 10 MODULE_DESCRIPTION(DRV_SUMMARY); 11 MODULE_IMPORT_NS("LIBETH"); 12 MODULE_LICENSE("GPL"); 13 14 /** 15 * idpf_remove - Device removal routine 16 * @pdev: PCI device information struct 17 */ 18 static void idpf_remove(struct pci_dev *pdev) 19 { 20 struct idpf_adapter *adapter = pci_get_drvdata(pdev); 21 int i; 22 23 set_bit(IDPF_REMOVE_IN_PROG, adapter->flags); 24 25 /* Wait until vc_event_task is done to consider if any hard reset is 26 * in progress else we may go ahead and release the resources but the 27 * thread doing the hard reset might continue the init path and 28 * end up in bad state. 29 */ 30 cancel_delayed_work_sync(&adapter->vc_event_task); 31 if (adapter->num_vfs) 32 idpf_sriov_configure(pdev, 0); 33 34 idpf_vc_core_deinit(adapter); 35 36 /* Be a good citizen and leave the device clean on exit */ 37 adapter->dev_ops.reg_ops.trigger_reset(adapter, IDPF_HR_FUNC_RESET); 38 idpf_deinit_dflt_mbx(adapter); 39 40 if (!adapter->netdevs) 41 goto destroy_wqs; 42 43 /* There are some cases where it's possible to still have netdevs 44 * registered with the stack at this point, e.g. if the driver detected 45 * a HW reset and rmmod is called before it fully recovers. Unregister 46 * any stale netdevs here. 47 */ 48 for (i = 0; i < adapter->max_vports; i++) { 49 if (!adapter->netdevs[i]) 50 continue; 51 if (adapter->netdevs[i]->reg_state != NETREG_UNINITIALIZED) 52 unregister_netdev(adapter->netdevs[i]); 53 free_netdev(adapter->netdevs[i]); 54 adapter->netdevs[i] = NULL; 55 } 56 57 destroy_wqs: 58 destroy_workqueue(adapter->init_wq); 59 destroy_workqueue(adapter->serv_wq); 60 destroy_workqueue(adapter->mbx_wq); 61 destroy_workqueue(adapter->stats_wq); 62 destroy_workqueue(adapter->vc_event_wq); 63 64 for (i = 0; i < adapter->max_vports; i++) { 65 kfree(adapter->vport_config[i]); 66 adapter->vport_config[i] = NULL; 67 } 68 kfree(adapter->vport_config); 69 adapter->vport_config = NULL; 70 kfree(adapter->netdevs); 71 adapter->netdevs = NULL; 72 kfree(adapter->vcxn_mngr); 73 adapter->vcxn_mngr = NULL; 74 75 mutex_destroy(&adapter->vport_ctrl_lock); 76 mutex_destroy(&adapter->vector_lock); 77 mutex_destroy(&adapter->queue_lock); 78 mutex_destroy(&adapter->vc_buf_lock); 79 80 pci_set_drvdata(pdev, NULL); 81 kfree(adapter); 82 } 83 84 /** 85 * idpf_shutdown - PCI callback for shutting down device 86 * @pdev: PCI device information struct 87 */ 88 static void idpf_shutdown(struct pci_dev *pdev) 89 { 90 struct idpf_adapter *adapter = pci_get_drvdata(pdev); 91 92 cancel_delayed_work_sync(&adapter->vc_event_task); 93 idpf_vc_core_deinit(adapter); 94 idpf_deinit_dflt_mbx(adapter); 95 96 if (system_state == SYSTEM_POWER_OFF) 97 pci_set_power_state(pdev, PCI_D3hot); 98 } 99 100 /** 101 * idpf_cfg_hw - Initialize HW struct 102 * @adapter: adapter to setup hw struct for 103 * 104 * Returns 0 on success, negative on failure 105 */ 106 static int idpf_cfg_hw(struct idpf_adapter *adapter) 107 { 108 struct pci_dev *pdev = adapter->pdev; 109 struct idpf_hw *hw = &adapter->hw; 110 111 hw->hw_addr = pcim_iomap_table(pdev)[0]; 112 if (!hw->hw_addr) { 113 pci_err(pdev, "failed to allocate PCI iomap table\n"); 114 115 return -ENOMEM; 116 } 117 118 hw->back = adapter; 119 120 return 0; 121 } 122 123 /** 124 * idpf_probe - Device initialization routine 125 * @pdev: PCI device information struct 126 * @ent: entry in idpf_pci_tbl 127 * 128 * Returns 0 on success, negative on failure 129 */ 130 static int idpf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 131 { 132 struct device *dev = &pdev->dev; 133 struct idpf_adapter *adapter; 134 int err; 135 136 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); 137 if (!adapter) 138 return -ENOMEM; 139 140 adapter->req_tx_splitq = true; 141 adapter->req_rx_splitq = true; 142 143 switch (ent->device) { 144 case IDPF_DEV_ID_PF: 145 idpf_dev_ops_init(adapter); 146 break; 147 case IDPF_DEV_ID_VF: 148 idpf_vf_dev_ops_init(adapter); 149 adapter->crc_enable = true; 150 break; 151 default: 152 err = -ENODEV; 153 dev_err(&pdev->dev, "Unexpected dev ID 0x%x in idpf probe\n", 154 ent->device); 155 goto err_free; 156 } 157 158 adapter->pdev = pdev; 159 err = pcim_enable_device(pdev); 160 if (err) 161 goto err_free; 162 163 err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev)); 164 if (err) { 165 pci_err(pdev, "pcim_iomap_regions failed %pe\n", ERR_PTR(err)); 166 167 goto err_free; 168 } 169 170 /* set up for high or low dma */ 171 err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); 172 if (err) { 173 pci_err(pdev, "DMA configuration failed: %pe\n", ERR_PTR(err)); 174 175 goto err_free; 176 } 177 178 pci_set_master(pdev); 179 pci_set_drvdata(pdev, adapter); 180 181 adapter->init_wq = alloc_workqueue("%s-%s-init", 182 WQ_UNBOUND | WQ_MEM_RECLAIM, 0, 183 dev_driver_string(dev), 184 dev_name(dev)); 185 if (!adapter->init_wq) { 186 dev_err(dev, "Failed to allocate init workqueue\n"); 187 err = -ENOMEM; 188 goto err_free; 189 } 190 191 adapter->serv_wq = alloc_workqueue("%s-%s-service", 192 WQ_UNBOUND | WQ_MEM_RECLAIM, 0, 193 dev_driver_string(dev), 194 dev_name(dev)); 195 if (!adapter->serv_wq) { 196 dev_err(dev, "Failed to allocate service workqueue\n"); 197 err = -ENOMEM; 198 goto err_serv_wq_alloc; 199 } 200 201 adapter->mbx_wq = alloc_workqueue("%s-%s-mbx", 202 WQ_UNBOUND | WQ_MEM_RECLAIM, 0, 203 dev_driver_string(dev), 204 dev_name(dev)); 205 if (!adapter->mbx_wq) { 206 dev_err(dev, "Failed to allocate mailbox workqueue\n"); 207 err = -ENOMEM; 208 goto err_mbx_wq_alloc; 209 } 210 211 adapter->stats_wq = alloc_workqueue("%s-%s-stats", 212 WQ_UNBOUND | WQ_MEM_RECLAIM, 0, 213 dev_driver_string(dev), 214 dev_name(dev)); 215 if (!adapter->stats_wq) { 216 dev_err(dev, "Failed to allocate workqueue\n"); 217 err = -ENOMEM; 218 goto err_stats_wq_alloc; 219 } 220 221 adapter->vc_event_wq = alloc_workqueue("%s-%s-vc_event", 222 WQ_UNBOUND | WQ_MEM_RECLAIM, 0, 223 dev_driver_string(dev), 224 dev_name(dev)); 225 if (!adapter->vc_event_wq) { 226 dev_err(dev, "Failed to allocate virtchnl event workqueue\n"); 227 err = -ENOMEM; 228 goto err_vc_event_wq_alloc; 229 } 230 231 /* setup msglvl */ 232 adapter->msg_enable = netif_msg_init(-1, IDPF_AVAIL_NETIF_M); 233 234 err = idpf_cfg_hw(adapter); 235 if (err) { 236 dev_err(dev, "Failed to configure HW structure for adapter: %d\n", 237 err); 238 goto err_cfg_hw; 239 } 240 241 mutex_init(&adapter->vport_ctrl_lock); 242 mutex_init(&adapter->vector_lock); 243 mutex_init(&adapter->queue_lock); 244 mutex_init(&adapter->vc_buf_lock); 245 246 INIT_DELAYED_WORK(&adapter->init_task, idpf_init_task); 247 INIT_DELAYED_WORK(&adapter->serv_task, idpf_service_task); 248 INIT_DELAYED_WORK(&adapter->mbx_task, idpf_mbx_task); 249 INIT_DELAYED_WORK(&adapter->stats_task, idpf_statistics_task); 250 INIT_DELAYED_WORK(&adapter->vc_event_task, idpf_vc_event_task); 251 252 adapter->dev_ops.reg_ops.reset_reg_init(adapter); 253 set_bit(IDPF_HR_DRV_LOAD, adapter->flags); 254 queue_delayed_work(adapter->vc_event_wq, &adapter->vc_event_task, 255 msecs_to_jiffies(10 * (pdev->devfn & 0x07))); 256 257 return 0; 258 259 err_cfg_hw: 260 destroy_workqueue(adapter->vc_event_wq); 261 err_vc_event_wq_alloc: 262 destroy_workqueue(adapter->stats_wq); 263 err_stats_wq_alloc: 264 destroy_workqueue(adapter->mbx_wq); 265 err_mbx_wq_alloc: 266 destroy_workqueue(adapter->serv_wq); 267 err_serv_wq_alloc: 268 destroy_workqueue(adapter->init_wq); 269 err_free: 270 kfree(adapter); 271 return err; 272 } 273 274 /* idpf_pci_tbl - PCI Dev idpf ID Table 275 */ 276 static const struct pci_device_id idpf_pci_tbl[] = { 277 { PCI_VDEVICE(INTEL, IDPF_DEV_ID_PF)}, 278 { PCI_VDEVICE(INTEL, IDPF_DEV_ID_VF)}, 279 { /* Sentinel */ } 280 }; 281 MODULE_DEVICE_TABLE(pci, idpf_pci_tbl); 282 283 static struct pci_driver idpf_driver = { 284 .name = KBUILD_MODNAME, 285 .id_table = idpf_pci_tbl, 286 .probe = idpf_probe, 287 .sriov_configure = idpf_sriov_configure, 288 .remove = idpf_remove, 289 .shutdown = idpf_shutdown, 290 }; 291 module_pci_driver(idpf_driver); 292