1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright (c) 2014-2021 Netronome Systems, Inc. 3 * All rights reserved. 4 * 5 * Small portions derived from code Copyright(c) 2010-2015 Intel Corporation. 6 */ 7 8 /* 9 * vim:shiftwidth=8:noexpandtab 10 * 11 * @file dpdk/pmd/nfp_ethdev_vf.c 12 * 13 * Netronome vNIC VF DPDK Poll-Mode Driver: Main entry point 14 */ 15 16 #include <rte_alarm.h> 17 18 #include "nfpcore/nfp_mip.h" 19 #include "nfpcore/nfp_rtsym.h" 20 21 #include "nfp_common.h" 22 #include "nfp_ctrl.h" 23 #include "nfp_rxtx.h" 24 #include "nfp_logs.h" 25 26 static void 27 nfp_netvf_read_mac(struct nfp_net_hw *hw) 28 { 29 uint32_t tmp; 30 31 tmp = rte_be_to_cpu_32(nn_cfg_readl(hw, NFP_NET_CFG_MACADDR)); 32 memcpy(&hw->mac_addr[0], &tmp, 4); 33 34 tmp = rte_be_to_cpu_32(nn_cfg_readl(hw, NFP_NET_CFG_MACADDR + 4)); 35 memcpy(&hw->mac_addr[4], &tmp, 2); 36 } 37 38 static int 39 nfp_netvf_start(struct rte_eth_dev *dev) 40 { 41 struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev); 42 struct rte_intr_handle *intr_handle = pci_dev->intr_handle; 43 uint32_t new_ctrl, update = 0; 44 struct nfp_net_hw *hw; 45 struct rte_eth_conf *dev_conf; 46 struct rte_eth_rxmode *rxmode; 47 uint32_t intr_vector; 48 int ret; 49 50 hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private); 51 52 PMD_INIT_LOG(DEBUG, "Start"); 53 54 /* Disabling queues just in case... */ 55 nfp_net_disable_queues(dev); 56 57 /* Enabling the required queues in the device */ 58 nfp_net_enable_queues(dev); 59 60 /* check and configure queue intr-vector mapping */ 61 if (dev->data->dev_conf.intr_conf.rxq != 0) { 62 if (rte_intr_type_get(intr_handle) == 63 RTE_INTR_HANDLE_UIO) { 64 /* 65 * Better not to share LSC with RX interrupts. 66 * Unregistering LSC interrupt handler 67 */ 68 rte_intr_callback_unregister(pci_dev->intr_handle, 69 nfp_net_dev_interrupt_handler, (void *)dev); 70 71 if (dev->data->nb_rx_queues > 1) { 72 PMD_INIT_LOG(ERR, "PMD rx interrupt only " 73 "supports 1 queue with UIO"); 74 return -EIO; 75 } 76 } 77 intr_vector = dev->data->nb_rx_queues; 78 if (rte_intr_efd_enable(intr_handle, intr_vector)) 79 return -1; 80 81 nfp_configure_rx_interrupt(dev, intr_handle); 82 update = NFP_NET_CFG_UPDATE_MSIX; 83 } 84 85 rte_intr_enable(intr_handle); 86 87 new_ctrl = nfp_check_offloads(dev); 88 89 /* Writing configuration parameters in the device */ 90 nfp_net_params_setup(hw); 91 92 dev_conf = &dev->data->dev_conf; 93 rxmode = &dev_conf->rxmode; 94 95 if (rxmode->mq_mode & RTE_ETH_MQ_RX_RSS) { 96 nfp_net_rss_config_default(dev); 97 update |= NFP_NET_CFG_UPDATE_RSS; 98 if (hw->cap & NFP_NET_CFG_CTRL_RSS2) 99 new_ctrl |= NFP_NET_CFG_CTRL_RSS2; 100 else 101 new_ctrl |= NFP_NET_CFG_CTRL_RSS; 102 } 103 104 /* Enable device */ 105 new_ctrl |= NFP_NET_CFG_CTRL_ENABLE; 106 107 update |= NFP_NET_CFG_UPDATE_GEN | NFP_NET_CFG_UPDATE_RING; 108 109 if (hw->cap & NFP_NET_CFG_CTRL_RINGCFG) 110 new_ctrl |= NFP_NET_CFG_CTRL_RINGCFG; 111 112 nn_cfg_writel(hw, NFP_NET_CFG_CTRL, new_ctrl); 113 if (nfp_net_reconfig(hw, new_ctrl, update) < 0) 114 return -EIO; 115 116 /* 117 * Allocating rte mbufs for configured rx queues. 118 * This requires queues being enabled before 119 */ 120 if (nfp_net_rx_freelist_setup(dev) < 0) { 121 ret = -ENOMEM; 122 goto error; 123 } 124 125 hw->ctrl = new_ctrl; 126 127 return 0; 128 129 error: 130 /* 131 * An error returned by this function should mean the app 132 * exiting and then the system releasing all the memory 133 * allocated even memory coming from hugepages. 134 * 135 * The device could be enabled at this point with some queues 136 * ready for getting packets. This is true if the call to 137 * nfp_net_rx_freelist_setup() succeeds for some queues but 138 * fails for subsequent queues. 139 * 140 * This should make the app exiting but better if we tell the 141 * device first. 142 */ 143 nfp_net_disable_queues(dev); 144 145 return ret; 146 } 147 148 static int 149 nfp_netvf_stop(struct rte_eth_dev *dev) 150 { 151 PMD_INIT_LOG(DEBUG, "Stop"); 152 153 nfp_net_disable_queues(dev); 154 155 /* Clear queues */ 156 nfp_net_stop_tx_queue(dev); 157 158 nfp_net_stop_rx_queue(dev); 159 160 return 0; 161 } 162 163 static int 164 nfp_netvf_set_link_up(struct rte_eth_dev *dev __rte_unused) 165 { 166 return -ENOTSUP; 167 } 168 169 /* Set the link down. */ 170 static int 171 nfp_netvf_set_link_down(struct rte_eth_dev *dev __rte_unused) 172 { 173 return -ENOTSUP; 174 } 175 176 /* Reset and stop device. The device can not be restarted. */ 177 static int 178 nfp_netvf_close(struct rte_eth_dev *dev) 179 { 180 struct rte_pci_device *pci_dev; 181 182 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 183 return 0; 184 185 PMD_INIT_LOG(DEBUG, "Close"); 186 187 pci_dev = RTE_ETH_DEV_TO_PCI(dev); 188 189 /* 190 * We assume that the DPDK application is stopping all the 191 * threads/queues before calling the device close function. 192 */ 193 194 nfp_net_disable_queues(dev); 195 196 /* Clear queues */ 197 nfp_net_close_tx_queue(dev); 198 199 nfp_net_close_rx_queue(dev); 200 201 rte_intr_disable(pci_dev->intr_handle); 202 203 /* unregister callback func from eal lib */ 204 rte_intr_callback_unregister(pci_dev->intr_handle, 205 nfp_net_dev_interrupt_handler, 206 (void *)dev); 207 208 /* Cancel possible impending LSC work here before releasing the port*/ 209 rte_eal_alarm_cancel(nfp_net_dev_interrupt_delayed_handler, 210 (void *)dev); 211 212 /* 213 * The ixgbe PMD disables the pcie master on the 214 * device. The i40e does not... 215 */ 216 217 return 0; 218 } 219 220 /* Initialise and register VF driver with DPDK Application */ 221 static const struct eth_dev_ops nfp_netvf_eth_dev_ops = { 222 .dev_configure = nfp_net_configure, 223 .dev_start = nfp_netvf_start, 224 .dev_stop = nfp_netvf_stop, 225 .dev_set_link_up = nfp_netvf_set_link_up, 226 .dev_set_link_down = nfp_netvf_set_link_down, 227 .dev_close = nfp_netvf_close, 228 .promiscuous_enable = nfp_net_promisc_enable, 229 .promiscuous_disable = nfp_net_promisc_disable, 230 .link_update = nfp_net_link_update, 231 .stats_get = nfp_net_stats_get, 232 .stats_reset = nfp_net_stats_reset, 233 .dev_infos_get = nfp_net_infos_get, 234 .dev_supported_ptypes_get = nfp_net_supported_ptypes_get, 235 .mtu_set = nfp_net_dev_mtu_set, 236 .mac_addr_set = nfp_net_set_mac_addr, 237 .vlan_offload_set = nfp_net_vlan_offload_set, 238 .reta_update = nfp_net_reta_update, 239 .reta_query = nfp_net_reta_query, 240 .rss_hash_update = nfp_net_rss_hash_update, 241 .rss_hash_conf_get = nfp_net_rss_hash_conf_get, 242 .rx_queue_setup = nfp_net_rx_queue_setup, 243 .rx_queue_release = nfp_net_rx_queue_release, 244 .tx_queue_setup = nfp_net_tx_queue_setup, 245 .tx_queue_release = nfp_net_tx_queue_release, 246 .rx_queue_intr_enable = nfp_rx_queue_intr_enable, 247 .rx_queue_intr_disable = nfp_rx_queue_intr_disable, 248 }; 249 250 static inline int 251 nfp_netvf_ethdev_ops_mount(struct nfp_net_hw *hw, struct rte_eth_dev *eth_dev) 252 { 253 switch (NFD_CFG_CLASS_VER_of(hw->ver)) { 254 case NFP_NET_CFG_VERSION_DP_NFD3: 255 eth_dev->tx_pkt_burst = &nfp_net_nfd3_xmit_pkts; 256 break; 257 case NFP_NET_CFG_VERSION_DP_NFDK: 258 if (NFD_CFG_MAJOR_VERSION_of(hw->ver) < 5) { 259 PMD_DRV_LOG(ERR, "NFDK must use ABI 5 or newer, found: %d", 260 NFD_CFG_MAJOR_VERSION_of(hw->ver)); 261 return -EINVAL; 262 } 263 eth_dev->tx_pkt_burst = &nfp_net_nfdk_xmit_pkts; 264 break; 265 default: 266 PMD_DRV_LOG(ERR, "The version of firmware is not correct."); 267 return -EINVAL; 268 } 269 270 eth_dev->dev_ops = &nfp_netvf_eth_dev_ops; 271 eth_dev->rx_queue_count = nfp_net_rx_queue_count; 272 eth_dev->rx_pkt_burst = &nfp_net_recv_pkts; 273 274 return 0; 275 } 276 277 static int 278 nfp_netvf_init(struct rte_eth_dev *eth_dev) 279 { 280 struct rte_pci_device *pci_dev; 281 struct nfp_net_hw *hw; 282 struct rte_ether_addr *tmp_ether_addr; 283 284 uint64_t tx_bar_off = 0, rx_bar_off = 0; 285 uint32_t start_q; 286 int stride = 4; 287 int port = 0; 288 int err; 289 290 PMD_INIT_FUNC_TRACE(); 291 292 pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev); 293 294 /* NFP can not handle DMA addresses requiring more than 40 bits */ 295 if (rte_mem_check_dma_mask(40)) { 296 RTE_LOG(ERR, PMD, 297 "device %s can not be used: restricted dma mask to 40 bits!\n", 298 pci_dev->device.name); 299 return -ENODEV; 300 } 301 302 hw = NFP_NET_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private); 303 304 hw->ctrl_bar = (uint8_t *)pci_dev->mem_resource[0].addr; 305 if (hw->ctrl_bar == NULL) { 306 PMD_DRV_LOG(ERR, 307 "hw->ctrl_bar is NULL. BAR0 not configured"); 308 return -ENODEV; 309 } 310 311 PMD_INIT_LOG(DEBUG, "ctrl bar: %p", hw->ctrl_bar); 312 313 hw->ver = nn_cfg_readl(hw, NFP_NET_CFG_VERSION); 314 315 if (nfp_netvf_ethdev_ops_mount(hw, eth_dev)) 316 return -EINVAL; 317 318 /* For secondary processes, the primary has done all the work */ 319 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 320 return 0; 321 322 rte_eth_copy_pci_info(eth_dev, pci_dev); 323 324 hw->device_id = pci_dev->id.device_id; 325 hw->vendor_id = pci_dev->id.vendor_id; 326 hw->subsystem_device_id = pci_dev->id.subsystem_device_id; 327 hw->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id; 328 329 PMD_INIT_LOG(DEBUG, "nfp_net: device (%u:%u) %u:%u:%u:%u", 330 pci_dev->id.vendor_id, pci_dev->id.device_id, 331 pci_dev->addr.domain, pci_dev->addr.bus, 332 pci_dev->addr.devid, pci_dev->addr.function); 333 334 hw->max_rx_queues = nn_cfg_readl(hw, NFP_NET_CFG_MAX_RXRINGS); 335 hw->max_tx_queues = nn_cfg_readl(hw, NFP_NET_CFG_MAX_TXRINGS); 336 if (hw->max_rx_queues == 0 || hw->max_tx_queues == 0) { 337 PMD_DRV_LOG(ERR, 338 "Device %s can not be used, there are no valid queue " 339 "pairs for use, please try to generate less VFs", 340 pci_dev->name); 341 return -ENODEV; 342 } 343 344 /* Work out where in the BAR the queues start. */ 345 switch (pci_dev->id.device_id) { 346 case PCI_DEVICE_ID_NFP3800_VF_NIC: 347 case PCI_DEVICE_ID_NFP6000_VF_NIC: 348 start_q = nn_cfg_readl(hw, NFP_NET_CFG_START_TXQ); 349 tx_bar_off = nfp_pci_queue(pci_dev, start_q); 350 start_q = nn_cfg_readl(hw, NFP_NET_CFG_START_RXQ); 351 rx_bar_off = nfp_pci_queue(pci_dev, start_q); 352 break; 353 default: 354 PMD_DRV_LOG(ERR, "nfp_net: no device ID matching"); 355 err = -ENODEV; 356 goto dev_err_ctrl_map; 357 } 358 359 PMD_INIT_LOG(DEBUG, "tx_bar_off: 0x%" PRIx64 "", tx_bar_off); 360 PMD_INIT_LOG(DEBUG, "rx_bar_off: 0x%" PRIx64 "", rx_bar_off); 361 362 hw->tx_bar = (uint8_t *)pci_dev->mem_resource[2].addr + 363 tx_bar_off; 364 hw->rx_bar = (uint8_t *)pci_dev->mem_resource[2].addr + 365 rx_bar_off; 366 367 PMD_INIT_LOG(DEBUG, "ctrl_bar: %p, tx_bar: %p, rx_bar: %p", 368 hw->ctrl_bar, hw->tx_bar, hw->rx_bar); 369 370 nfp_net_cfg_queue_setup(hw); 371 372 /* Get some of the read-only fields from the config BAR */ 373 hw->cap = nn_cfg_readl(hw, NFP_NET_CFG_CAP); 374 hw->max_mtu = nn_cfg_readl(hw, NFP_NET_CFG_MAX_MTU); 375 hw->mtu = RTE_ETHER_MTU; 376 377 /* VLAN insertion is incompatible with LSOv2 */ 378 if (hw->cap & NFP_NET_CFG_CTRL_LSO2) 379 hw->cap &= ~NFP_NET_CFG_CTRL_TXVLAN; 380 381 if (NFD_CFG_MAJOR_VERSION_of(hw->ver) < 2) 382 hw->rx_offset = NFP_NET_RX_OFFSET; 383 else 384 hw->rx_offset = nn_cfg_readl(hw, NFP_NET_CFG_RX_OFFSET_ADDR); 385 386 hw->ctrl = 0; 387 388 hw->stride_rx = stride; 389 hw->stride_tx = stride; 390 391 nfp_net_log_device_information(hw); 392 393 /* Initializing spinlock for reconfigs */ 394 rte_spinlock_init(&hw->reconfig_lock); 395 396 /* Allocating memory for mac addr */ 397 eth_dev->data->mac_addrs = rte_zmalloc("mac_addr", 398 RTE_ETHER_ADDR_LEN, 0); 399 if (eth_dev->data->mac_addrs == NULL) { 400 PMD_INIT_LOG(ERR, "Failed to space for MAC address"); 401 err = -ENOMEM; 402 goto dev_err_queues_map; 403 } 404 405 nfp_netvf_read_mac(hw); 406 407 tmp_ether_addr = (struct rte_ether_addr *)&hw->mac_addr; 408 if (!rte_is_valid_assigned_ether_addr(tmp_ether_addr)) { 409 PMD_INIT_LOG(INFO, "Using random mac address for port %d", 410 port); 411 /* Using random mac addresses for VFs */ 412 rte_eth_random_addr(&hw->mac_addr[0]); 413 nfp_net_write_mac(hw, (uint8_t *)&hw->mac_addr); 414 } 415 416 /* Copying mac address to DPDK eth_dev struct */ 417 rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr, 418 ð_dev->data->mac_addrs[0]); 419 420 if ((hw->cap & NFP_NET_CFG_CTRL_LIVE_ADDR) == 0) 421 eth_dev->data->dev_flags |= RTE_ETH_DEV_NOLIVE_MAC_ADDR; 422 423 eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS; 424 425 PMD_INIT_LOG(INFO, "port %d VendorID=0x%x DeviceID=0x%x " 426 "mac=%02x:%02x:%02x:%02x:%02x:%02x", 427 eth_dev->data->port_id, pci_dev->id.vendor_id, 428 pci_dev->id.device_id, 429 hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2], 430 hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]); 431 432 if (rte_eal_process_type() == RTE_PROC_PRIMARY) { 433 /* Registering LSC interrupt handler */ 434 rte_intr_callback_register(pci_dev->intr_handle, 435 nfp_net_dev_interrupt_handler, 436 (void *)eth_dev); 437 /* Telling the firmware about the LSC interrupt entry */ 438 nn_cfg_writeb(hw, NFP_NET_CFG_LSC, NFP_NET_IRQ_LSC_IDX); 439 /* Recording current stats counters values */ 440 nfp_net_stats_reset(eth_dev); 441 } 442 443 return 0; 444 445 dev_err_queues_map: 446 nfp_cpp_area_free(hw->hwqueues_area); 447 dev_err_ctrl_map: 448 nfp_cpp_area_free(hw->ctrl_area); 449 450 return err; 451 } 452 453 static const struct rte_pci_id pci_id_nfp_vf_net_map[] = { 454 { 455 RTE_PCI_DEVICE(PCI_VENDOR_ID_NETRONOME, 456 PCI_DEVICE_ID_NFP3800_VF_NIC) 457 }, 458 { 459 RTE_PCI_DEVICE(PCI_VENDOR_ID_NETRONOME, 460 PCI_DEVICE_ID_NFP6000_VF_NIC) 461 }, 462 { 463 RTE_PCI_DEVICE(PCI_VENDOR_ID_CORIGINE, 464 PCI_DEVICE_ID_NFP3800_VF_NIC) 465 }, 466 { 467 RTE_PCI_DEVICE(PCI_VENDOR_ID_CORIGINE, 468 PCI_DEVICE_ID_NFP6000_VF_NIC) 469 }, 470 { 471 .vendor_id = 0, 472 }, 473 }; 474 475 static int nfp_vf_pci_uninit(struct rte_eth_dev *eth_dev) 476 { 477 /* VF cleanup, just free private port data */ 478 return nfp_netvf_close(eth_dev); 479 } 480 481 static int eth_nfp_vf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 482 struct rte_pci_device *pci_dev) 483 { 484 return rte_eth_dev_pci_generic_probe(pci_dev, 485 sizeof(struct nfp_net_adapter), nfp_netvf_init); 486 } 487 488 static int eth_nfp_vf_pci_remove(struct rte_pci_device *pci_dev) 489 { 490 return rte_eth_dev_pci_generic_remove(pci_dev, nfp_vf_pci_uninit); 491 } 492 493 static struct rte_pci_driver rte_nfp_net_vf_pmd = { 494 .id_table = pci_id_nfp_vf_net_map, 495 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC, 496 .probe = eth_nfp_vf_pci_probe, 497 .remove = eth_nfp_vf_pci_remove, 498 }; 499 500 RTE_PMD_REGISTER_PCI(net_nfp_vf, rte_nfp_net_vf_pmd); 501 RTE_PMD_REGISTER_PCI_TABLE(net_nfp_vf, pci_id_nfp_vf_net_map); 502 RTE_PMD_REGISTER_KMOD_DEP(net_nfp_vf, "* igb_uio | uio_pci_generic | vfio"); 503 /* 504 * Local variables: 505 * c-file-style: "Linux" 506 * indent-tabs-mode: t 507 * End: 508 */ 509