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->serv_task); 93 cancel_delayed_work_sync(&adapter->vc_event_task); 94 idpf_vc_core_deinit(adapter); 95 idpf_deinit_dflt_mbx(adapter); 96 97 if (system_state == SYSTEM_POWER_OFF) 98 pci_set_power_state(pdev, PCI_D3hot); 99 } 100 101 /** 102 * idpf_cfg_hw - Initialize HW struct 103 * @adapter: adapter to setup hw struct for 104 * 105 * Returns 0 on success, negative on failure 106 */ 107 static int idpf_cfg_hw(struct idpf_adapter *adapter) 108 { 109 struct pci_dev *pdev = adapter->pdev; 110 struct idpf_hw *hw = &adapter->hw; 111 112 hw->hw_addr = pcim_iomap_table(pdev)[0]; 113 if (!hw->hw_addr) { 114 pci_err(pdev, "failed to allocate PCI iomap table\n"); 115 116 return -ENOMEM; 117 } 118 119 hw->back = adapter; 120 121 return 0; 122 } 123 124 /** 125 * idpf_probe - Device initialization routine 126 * @pdev: PCI device information struct 127 * @ent: entry in idpf_pci_tbl 128 * 129 * Returns 0 on success, negative on failure 130 */ 131 static int idpf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 132 { 133 struct device *dev = &pdev->dev; 134 struct idpf_adapter *adapter; 135 int err; 136 137 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); 138 if (!adapter) 139 return -ENOMEM; 140 141 adapter->req_tx_splitq = true; 142 adapter->req_rx_splitq = true; 143 144 switch (ent->device) { 145 case IDPF_DEV_ID_PF: 146 idpf_dev_ops_init(adapter); 147 break; 148 case IDPF_DEV_ID_VF: 149 idpf_vf_dev_ops_init(adapter); 150 adapter->crc_enable = true; 151 break; 152 default: 153 err = -ENODEV; 154 dev_err(&pdev->dev, "Unexpected dev ID 0x%x in idpf probe\n", 155 ent->device); 156 goto err_free; 157 } 158 159 adapter->pdev = pdev; 160 err = pcim_enable_device(pdev); 161 if (err) 162 goto err_free; 163 164 err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev)); 165 if (err) { 166 pci_err(pdev, "pcim_iomap_regions failed %pe\n", ERR_PTR(err)); 167 168 goto err_free; 169 } 170 171 /* set up for high or low dma */ 172 err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); 173 if (err) { 174 pci_err(pdev, "DMA configuration failed: %pe\n", ERR_PTR(err)); 175 176 goto err_free; 177 } 178 179 pci_set_master(pdev); 180 pci_set_drvdata(pdev, adapter); 181 182 adapter->init_wq = alloc_workqueue("%s-%s-init", 183 WQ_UNBOUND | WQ_MEM_RECLAIM, 0, 184 dev_driver_string(dev), 185 dev_name(dev)); 186 if (!adapter->init_wq) { 187 dev_err(dev, "Failed to allocate init workqueue\n"); 188 err = -ENOMEM; 189 goto err_free; 190 } 191 192 adapter->serv_wq = alloc_workqueue("%s-%s-service", 193 WQ_UNBOUND | WQ_MEM_RECLAIM, 0, 194 dev_driver_string(dev), 195 dev_name(dev)); 196 if (!adapter->serv_wq) { 197 dev_err(dev, "Failed to allocate service workqueue\n"); 198 err = -ENOMEM; 199 goto err_serv_wq_alloc; 200 } 201 202 adapter->mbx_wq = alloc_workqueue("%s-%s-mbx", 203 WQ_UNBOUND | WQ_MEM_RECLAIM, 0, 204 dev_driver_string(dev), 205 dev_name(dev)); 206 if (!adapter->mbx_wq) { 207 dev_err(dev, "Failed to allocate mailbox workqueue\n"); 208 err = -ENOMEM; 209 goto err_mbx_wq_alloc; 210 } 211 212 adapter->stats_wq = alloc_workqueue("%s-%s-stats", 213 WQ_UNBOUND | WQ_MEM_RECLAIM, 0, 214 dev_driver_string(dev), 215 dev_name(dev)); 216 if (!adapter->stats_wq) { 217 dev_err(dev, "Failed to allocate workqueue\n"); 218 err = -ENOMEM; 219 goto err_stats_wq_alloc; 220 } 221 222 adapter->vc_event_wq = alloc_workqueue("%s-%s-vc_event", 223 WQ_UNBOUND | WQ_MEM_RECLAIM, 0, 224 dev_driver_string(dev), 225 dev_name(dev)); 226 if (!adapter->vc_event_wq) { 227 dev_err(dev, "Failed to allocate virtchnl event workqueue\n"); 228 err = -ENOMEM; 229 goto err_vc_event_wq_alloc; 230 } 231 232 /* setup msglvl */ 233 adapter->msg_enable = netif_msg_init(-1, IDPF_AVAIL_NETIF_M); 234 235 err = idpf_cfg_hw(adapter); 236 if (err) { 237 dev_err(dev, "Failed to configure HW structure for adapter: %d\n", 238 err); 239 goto err_cfg_hw; 240 } 241 242 mutex_init(&adapter->vport_ctrl_lock); 243 mutex_init(&adapter->vector_lock); 244 mutex_init(&adapter->queue_lock); 245 mutex_init(&adapter->vc_buf_lock); 246 247 INIT_DELAYED_WORK(&adapter->init_task, idpf_init_task); 248 INIT_DELAYED_WORK(&adapter->serv_task, idpf_service_task); 249 INIT_DELAYED_WORK(&adapter->mbx_task, idpf_mbx_task); 250 INIT_DELAYED_WORK(&adapter->stats_task, idpf_statistics_task); 251 INIT_DELAYED_WORK(&adapter->vc_event_task, idpf_vc_event_task); 252 253 adapter->dev_ops.reg_ops.reset_reg_init(adapter); 254 set_bit(IDPF_HR_DRV_LOAD, adapter->flags); 255 queue_delayed_work(adapter->vc_event_wq, &adapter->vc_event_task, 256 msecs_to_jiffies(10 * (pdev->devfn & 0x07))); 257 258 return 0; 259 260 err_cfg_hw: 261 destroy_workqueue(adapter->vc_event_wq); 262 err_vc_event_wq_alloc: 263 destroy_workqueue(adapter->stats_wq); 264 err_stats_wq_alloc: 265 destroy_workqueue(adapter->mbx_wq); 266 err_mbx_wq_alloc: 267 destroy_workqueue(adapter->serv_wq); 268 err_serv_wq_alloc: 269 destroy_workqueue(adapter->init_wq); 270 err_free: 271 kfree(adapter); 272 return err; 273 } 274 275 /* idpf_pci_tbl - PCI Dev idpf ID Table 276 */ 277 static const struct pci_device_id idpf_pci_tbl[] = { 278 { PCI_VDEVICE(INTEL, IDPF_DEV_ID_PF)}, 279 { PCI_VDEVICE(INTEL, IDPF_DEV_ID_VF)}, 280 { /* Sentinel */ } 281 }; 282 MODULE_DEVICE_TABLE(pci, idpf_pci_tbl); 283 284 static struct pci_driver idpf_driver = { 285 .name = KBUILD_MODNAME, 286 .id_table = idpf_pci_tbl, 287 .probe = idpf_probe, 288 .sriov_configure = idpf_sriov_configure, 289 .remove = idpf_remove, 290 .shutdown = idpf_shutdown, 291 }; 292 module_pci_driver(idpf_driver); 293