drivers/net/nfp/nfp_ethdev_vf.c

   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_rxtx.h"
  23 #include "nfp_logs.h"
  24 #include "nfp_ctrl.h"
  25
  26 static void nfp_netvf_read_mac(struct nfp_net_hw *hw);
  27 static int nfp_netvf_start(struct rte_eth_dev *dev);
  28 static int nfp_netvf_stop(struct rte_eth_dev *dev);
  29 static int nfp_netvf_set_link_up(struct rte_eth_dev *dev);
  30 static int nfp_netvf_set_link_down(struct rte_eth_dev *dev);
  31 static int nfp_netvf_close(struct rte_eth_dev *dev);
  32 static int nfp_netvf_init(struct rte_eth_dev *eth_dev);
  33 static int nfp_vf_pci_uninit(struct rte_eth_dev *eth_dev);
  34 static int eth_nfp_vf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
  35         struct rte_pci_device *pci_dev);
  36 static int eth_nfp_vf_pci_remove(struct rte_pci_device *pci_dev);
  37
  38 static void
  39 nfp_netvf_read_mac(struct nfp_net_hw *hw)
  40 {
  41         uint32_t tmp;
  42
  43         tmp = rte_be_to_cpu_32(nn_cfg_readl(hw, NFP_NET_CFG_MACADDR));
  44         memcpy(&hw->mac_addr[0], &tmp, 4);
  45
  46         tmp = rte_be_to_cpu_32(nn_cfg_readl(hw, NFP_NET_CFG_MACADDR + 4));
  47         memcpy(&hw->mac_addr[4], &tmp, 2);
  48 }
  49
  50 static int
  51 nfp_netvf_start(struct rte_eth_dev *dev)
  52 {
  53         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
  54         struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
  55         uint32_t new_ctrl, update = 0;
  56         struct nfp_net_hw *hw;
  57         struct rte_eth_conf *dev_conf;
  58         struct rte_eth_rxmode *rxmode;
  59         uint32_t intr_vector;
  60         int ret;
  61
  62         hw = NFP_NET_DEV_PRIVATE_TO_HW(dev->data->dev_private);
  63
  64         PMD_INIT_LOG(DEBUG, "Start");
  65
  66         /* Disabling queues just in case... */
  67         nfp_net_disable_queues(dev);
  68
  69         /* Enabling the required queues in the device */
  70         nfp_net_enable_queues(dev);
  71
  72         /* check and configure queue intr-vector mapping */
  73         if (dev->data->dev_conf.intr_conf.rxq != 0) {
  74                 if (intr_handle->type == RTE_INTR_HANDLE_UIO) {
  75                         /*
  76                          * Better not to share LSC with RX interrupts.
  77                          * Unregistering LSC interrupt handler
  78                          */
  79                         rte_intr_callback_unregister(&pci_dev->intr_handle,
  80                                 nfp_net_dev_interrupt_handler, (void *)dev);
  81
  82                         if (dev->data->nb_rx_queues > 1) {
  83                                 PMD_INIT_LOG(ERR, "PMD rx interrupt only "
  84                                              "supports 1 queue with UIO");
  85                                 return -EIO;
  86                         }
  87                 }
  88                 intr_vector = dev->data->nb_rx_queues;
  89                 if (rte_intr_efd_enable(intr_handle, intr_vector))
  90                         return -1;
  91
  92                 nfp_configure_rx_interrupt(dev, intr_handle);
  93                 update = NFP_NET_CFG_UPDATE_MSIX;
  94         }
  95
  96         rte_intr_enable(intr_handle);
  97
  98         new_ctrl = nfp_check_offloads(dev);
  99
 100         /* Writing configuration parameters in the device */
 101         nfp_net_params_setup(hw);
 102
 103         dev_conf = &dev->data->dev_conf;
 104         rxmode = &dev_conf->rxmode;
 105
 106         if (rxmode->mq_mode & RTE_ETH_MQ_RX_RSS) {
 107                 nfp_net_rss_config_default(dev);
 108                 update |= NFP_NET_CFG_UPDATE_RSS;
 109                 new_ctrl |= NFP_NET_CFG_CTRL_RSS;
 110         }
 111
 112         /* Enable device */
 113         new_ctrl |= NFP_NET_CFG_CTRL_ENABLE;
 114
 115         update |= NFP_NET_CFG_UPDATE_GEN | NFP_NET_CFG_UPDATE_RING;
 116
 117         if (hw->cap & NFP_NET_CFG_CTRL_RINGCFG)
 118                 new_ctrl |= NFP_NET_CFG_CTRL_RINGCFG;
 119
 120         nn_cfg_writel(hw, NFP_NET_CFG_CTRL, new_ctrl);
 121         if (nfp_net_reconfig(hw, new_ctrl, update) < 0)
 122                 return -EIO;
 123
 124         /*
 125          * Allocating rte mbufs for configured rx queues.
 126          * This requires queues being enabled before
 127          */
 128         if (nfp_net_rx_freelist_setup(dev) < 0) {
 129                 ret = -ENOMEM;
 130                 goto error;
 131         }
 132
 133         hw->ctrl = new_ctrl;
 134
 135         return 0;
 136
 137 error:
 138         /*
 139          * An error returned by this function should mean the app
 140          * exiting and then the system releasing all the memory
 141          * allocated even memory coming from hugepages.
 142          *
 143          * The device could be enabled at this point with some queues
 144          * ready for getting packets. This is true if the call to
 145          * nfp_net_rx_freelist_setup() succeeds for some queues but
 146          * fails for subsequent queues.
 147          *
 148          * This should make the app exiting but better if we tell the
 149          * device first.
 150          */
 151         nfp_net_disable_queues(dev);
 152
 153         return ret;
 154 }
 155
 156 static int
 157 nfp_netvf_stop(struct rte_eth_dev *dev)
 158 {
 159         struct nfp_net_txq *this_tx_q;
 160         struct nfp_net_rxq *this_rx_q;
 161         int i;
 162
 163         PMD_INIT_LOG(DEBUG, "Stop");
 164
 165         nfp_net_disable_queues(dev);
 166
 167         /* Clear queues */
 168         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 169                 this_tx_q = (struct nfp_net_txq *)dev->data->tx_queues[i];
 170                 nfp_net_reset_tx_queue(this_tx_q);
 171         }
 172
 173         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 174                 this_rx_q = (struct nfp_net_rxq *)dev->data->rx_queues[i];
 175                 nfp_net_reset_rx_queue(this_rx_q);
 176         }
 177
 178         return 0;
 179 }
 180
 181 static int
 182 nfp_netvf_set_link_up(struct rte_eth_dev *dev __rte_unused)
 183 {
 184         return -ENOTSUP;
 185 }
 186
 187 /* Set the link down. */
 188 static int
 189 nfp_netvf_set_link_down(struct rte_eth_dev *dev __rte_unused)
 190 {
 191         return -ENOTSUP;
 192 }
 193
 194 /* Reset and stop device. The device can not be restarted. */
 195 static int
 196 nfp_netvf_close(struct rte_eth_dev *dev)
 197 {
 198         struct rte_pci_device *pci_dev;
 199         struct nfp_net_txq *this_tx_q;
 200         struct nfp_net_rxq *this_rx_q;
 201         int i;
 202
 203         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 204                 return 0;
 205
 206         PMD_INIT_LOG(DEBUG, "Close");
 207
 208         pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 209
 210         /*
 211          * We assume that the DPDK application is stopping all the
 212          * threads/queues before calling the device close function.
 213          */
 214
 215         nfp_net_disable_queues(dev);
 216
 217         /* Clear queues */
 218         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 219                 this_tx_q =  (struct nfp_net_txq *)dev->data->tx_queues[i];
 220                 nfp_net_reset_tx_queue(this_tx_q);
 221         }
 222
 223         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 224                 this_rx_q =  (struct nfp_net_rxq *)dev->data->rx_queues[i];
 225                 nfp_net_reset_rx_queue(this_rx_q);
 226         }
 227
 228         rte_intr_disable(&pci_dev->intr_handle);
 229
 230         /* unregister callback func from eal lib */
 231         rte_intr_callback_unregister(&pci_dev->intr_handle,
 232                                      nfp_net_dev_interrupt_handler,
 233                                      (void *)dev);
 234
 235         /* Cancel possible impending LSC work here before releasing the port*/
 236         rte_eal_alarm_cancel(nfp_net_dev_interrupt_delayed_handler,
 237                              (void *)dev);
 238
 239         /*
 240          * The ixgbe PMD driver disables the pcie master on the
 241          * device. The i40e does not...
 242          */
 243
 244         return 0;
 245 }
 246
 247 /* Initialise and register VF driver with DPDK Application */
 248 static const struct eth_dev_ops nfp_netvf_eth_dev_ops = {
 249         .dev_configure          = nfp_net_configure,
 250         .dev_start              = nfp_netvf_start,
 251         .dev_stop               = nfp_netvf_stop,
 252         .dev_set_link_up        = nfp_netvf_set_link_up,
 253         .dev_set_link_down      = nfp_netvf_set_link_down,
 254         .dev_close              = nfp_netvf_close,
 255         .promiscuous_enable     = nfp_net_promisc_enable,
 256         .promiscuous_disable    = nfp_net_promisc_disable,
 257         .link_update            = nfp_net_link_update,
 258         .stats_get              = nfp_net_stats_get,
 259         .stats_reset            = nfp_net_stats_reset,
 260         .dev_infos_get          = nfp_net_infos_get,
 261         .dev_supported_ptypes_get = nfp_net_supported_ptypes_get,
 262         .mtu_set                = nfp_net_dev_mtu_set,
 263         .mac_addr_set           = nfp_set_mac_addr,
 264         .vlan_offload_set       = nfp_net_vlan_offload_set,
 265         .reta_update            = nfp_net_reta_update,
 266         .reta_query             = nfp_net_reta_query,
 267         .rss_hash_update        = nfp_net_rss_hash_update,
 268         .rss_hash_conf_get      = nfp_net_rss_hash_conf_get,
 269         .rx_queue_setup         = nfp_net_rx_queue_setup,
 270         .rx_queue_release       = nfp_net_rx_queue_release,
 271         .tx_queue_setup         = nfp_net_tx_queue_setup,
 272         .tx_queue_release       = nfp_net_tx_queue_release,
 273         .rx_queue_intr_enable   = nfp_rx_queue_intr_enable,
 274         .rx_queue_intr_disable  = nfp_rx_queue_intr_disable,
 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, "device %s can not be used:",
 297                                    pci_dev->device.name);
 298                 RTE_LOG(ERR, PMD, "\trestricted dma mask to 40 bits!\n");
 299                 return -ENODEV;
 300         };
 301
 302         hw = NFP_NET_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
 303
 304         eth_dev->dev_ops = &nfp_netvf_eth_dev_ops;
 305         eth_dev->rx_queue_count = nfp_net_rx_queue_count;
 306         eth_dev->rx_pkt_burst = &nfp_net_recv_pkts;
 307         eth_dev->tx_pkt_burst = &nfp_net_xmit_pkts;
 308
 309         /* For secondary processes, the primary has done all the work */
 310         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 311                 return 0;
 312
 313         rte_eth_copy_pci_info(eth_dev, pci_dev);
 314
 315         hw->device_id = pci_dev->id.device_id;
 316         hw->vendor_id = pci_dev->id.vendor_id;
 317         hw->subsystem_device_id = pci_dev->id.subsystem_device_id;
 318         hw->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id;
 319
 320         PMD_INIT_LOG(DEBUG, "nfp_net: device (%u:%u) %u:%u:%u:%u",
 321                      pci_dev->id.vendor_id, pci_dev->id.device_id,
 322                      pci_dev->addr.domain, pci_dev->addr.bus,
 323                      pci_dev->addr.devid, pci_dev->addr.function);
 324
 325         hw->ctrl_bar = (uint8_t *)pci_dev->mem_resource[0].addr;
 326         if (hw->ctrl_bar == NULL) {
 327                 PMD_DRV_LOG(ERR,
 328                         "hw->ctrl_bar is NULL. BAR0 not configured");
 329                 return -ENODEV;
 330         }
 331
 332         PMD_INIT_LOG(DEBUG, "ctrl bar: %p", hw->ctrl_bar);
 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
 337         /* Work out where in the BAR the queues start. */
 338         switch (pci_dev->id.device_id) {
 339         case PCI_DEVICE_ID_NFP6000_VF_NIC:
 340                 start_q = nn_cfg_readl(hw, NFP_NET_CFG_START_TXQ);
 341                 tx_bar_off = (uint64_t)start_q * NFP_QCP_QUEUE_ADDR_SZ;
 342                 start_q = nn_cfg_readl(hw, NFP_NET_CFG_START_RXQ);
 343                 rx_bar_off = (uint64_t)start_q * NFP_QCP_QUEUE_ADDR_SZ;
 344                 break;
 345         default:
 346                 PMD_DRV_LOG(ERR, "nfp_net: no device ID matching");
 347                 err = -ENODEV;
 348                 goto dev_err_ctrl_map;
 349         }
 350
 351         PMD_INIT_LOG(DEBUG, "tx_bar_off: 0x%" PRIx64 "", tx_bar_off);
 352         PMD_INIT_LOG(DEBUG, "rx_bar_off: 0x%" PRIx64 "", rx_bar_off);
 353
 354         hw->tx_bar = (uint8_t *)pci_dev->mem_resource[2].addr +
 355                      tx_bar_off;
 356         hw->rx_bar = (uint8_t *)pci_dev->mem_resource[2].addr +
 357                      rx_bar_off;
 358
 359         PMD_INIT_LOG(DEBUG, "ctrl_bar: %p, tx_bar: %p, rx_bar: %p",
 360                      hw->ctrl_bar, hw->tx_bar, hw->rx_bar);
 361
 362         nfp_net_cfg_queue_setup(hw);
 363
 364         /* Get some of the read-only fields from the config BAR */
 365         hw->ver = nn_cfg_readl(hw, NFP_NET_CFG_VERSION);
 366         hw->cap = nn_cfg_readl(hw, NFP_NET_CFG_CAP);
 367         hw->max_mtu = nn_cfg_readl(hw, NFP_NET_CFG_MAX_MTU);
 368         hw->mtu = RTE_ETHER_MTU;
 369
 370         /* VLAN insertion is incompatible with LSOv2 */
 371         if (hw->cap & NFP_NET_CFG_CTRL_LSO2)
 372                 hw->cap &= ~NFP_NET_CFG_CTRL_TXVLAN;
 373
 374         if (NFD_CFG_MAJOR_VERSION_of(hw->ver) < 2)
 375                 hw->rx_offset = NFP_NET_RX_OFFSET;
 376         else
 377                 hw->rx_offset = nn_cfg_readl(hw, NFP_NET_CFG_RX_OFFSET_ADDR);
 378
 379         PMD_INIT_LOG(INFO, "VER: %u.%u, Maximum supported MTU: %d",
 380                            NFD_CFG_MAJOR_VERSION_of(hw->ver),
 381                            NFD_CFG_MINOR_VERSION_of(hw->ver), hw->max_mtu);
 382
 383         PMD_INIT_LOG(INFO, "CAP: %#x, %s%s%s%s%s%s%s%s%s%s%s%s%s%s", hw->cap,
 384                      hw->cap & NFP_NET_CFG_CTRL_PROMISC ? "PROMISC " : "",
 385                      hw->cap & NFP_NET_CFG_CTRL_L2BC    ? "L2BCFILT " : "",
 386                      hw->cap & NFP_NET_CFG_CTRL_L2MC    ? "L2MCFILT " : "",
 387                      hw->cap & NFP_NET_CFG_CTRL_RXCSUM  ? "RXCSUM "  : "",
 388                      hw->cap & NFP_NET_CFG_CTRL_TXCSUM  ? "TXCSUM "  : "",
 389                      hw->cap & NFP_NET_CFG_CTRL_RXVLAN  ? "RXVLAN "  : "",
 390                      hw->cap & NFP_NET_CFG_CTRL_TXVLAN  ? "TXVLAN "  : "",
 391                      hw->cap & NFP_NET_CFG_CTRL_SCATTER ? "SCATTER " : "",
 392                      hw->cap & NFP_NET_CFG_CTRL_GATHER  ? "GATHER "  : "",
 393                      hw->cap & NFP_NET_CFG_CTRL_LIVE_ADDR ? "LIVE_ADDR "  : "",
 394                      hw->cap & NFP_NET_CFG_CTRL_LSO     ? "TSO "     : "",
 395                      hw->cap & NFP_NET_CFG_CTRL_LSO2     ? "TSOv2 "     : "",
 396                      hw->cap & NFP_NET_CFG_CTRL_RSS     ? "RSS "     : "",
 397                      hw->cap & NFP_NET_CFG_CTRL_RSS2     ? "RSSv2 "     : "");
 398
 399         hw->ctrl = 0;
 400
 401         hw->stride_rx = stride;
 402         hw->stride_tx = stride;
 403
 404         PMD_INIT_LOG(INFO, "max_rx_queues: %u, max_tx_queues: %u",
 405                      hw->max_rx_queues, hw->max_tx_queues);
 406
 407         /* Initializing spinlock for reconfigs */
 408         rte_spinlock_init(&hw->reconfig_lock);
 409
 410         /* Allocating memory for mac addr */
 411         eth_dev->data->mac_addrs = rte_zmalloc("mac_addr",
 412                                                RTE_ETHER_ADDR_LEN, 0);
 413         if (eth_dev->data->mac_addrs == NULL) {
 414                 PMD_INIT_LOG(ERR, "Failed to space for MAC address");
 415                 err = -ENOMEM;
 416                 goto dev_err_queues_map;
 417         }
 418
 419         nfp_netvf_read_mac(hw);
 420
 421         tmp_ether_addr = (struct rte_ether_addr *)&hw->mac_addr;
 422         if (!rte_is_valid_assigned_ether_addr(tmp_ether_addr)) {
 423                 PMD_INIT_LOG(INFO, "Using random mac address for port %d",
 424                                    port);
 425                 /* Using random mac addresses for VFs */
 426                 rte_eth_random_addr(&hw->mac_addr[0]);
 427                 nfp_net_write_mac(hw, (uint8_t *)&hw->mac_addr);
 428         }
 429
 430         /* Copying mac address to DPDK eth_dev struct */
 431         rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr,
 432                         &eth_dev->data->mac_addrs[0]);
 433
 434         if (!(hw->cap & NFP_NET_CFG_CTRL_LIVE_ADDR))
 435                 eth_dev->data->dev_flags |= RTE_ETH_DEV_NOLIVE_MAC_ADDR;
 436
 437         eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
 438
 439         PMD_INIT_LOG(INFO, "port %d VendorID=0x%x DeviceID=0x%x "
 440                      "mac=%02x:%02x:%02x:%02x:%02x:%02x",
 441                      eth_dev->data->port_id, pci_dev->id.vendor_id,
 442                      pci_dev->id.device_id,
 443                      hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
 444                      hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
 445
 446         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 447                 /* Registering LSC interrupt handler */
 448                 rte_intr_callback_register(&pci_dev->intr_handle,
 449                                            nfp_net_dev_interrupt_handler,
 450                                            (void *)eth_dev);
 451                 /* Telling the firmware about the LSC interrupt entry */
 452                 nn_cfg_writeb(hw, NFP_NET_CFG_LSC, NFP_NET_IRQ_LSC_IDX);
 453                 /* Recording current stats counters values */
 454                 nfp_net_stats_reset(eth_dev);
 455         }
 456
 457         return 0;
 458
 459 dev_err_queues_map:
 460                 nfp_cpp_area_free(hw->hwqueues_area);
 461 dev_err_ctrl_map:
 462                 nfp_cpp_area_free(hw->ctrl_area);
 463
 464         return err;
 465 }
 466
 467 static const struct rte_pci_id pci_id_nfp_vf_net_map[] = {
 468         {
 469                 RTE_PCI_DEVICE(PCI_VENDOR_ID_NETRONOME,
 470                                PCI_DEVICE_ID_NFP6000_VF_NIC)
 471         },
 472         {
 473                 .vendor_id = 0,
 474         },
 475 };
 476
 477 static int nfp_vf_pci_uninit(struct rte_eth_dev *eth_dev)
 478 {
 479         /* VF cleanup, just free private port data */
 480         return nfp_netvf_close(eth_dev);
 481 }
 482
 483 static int eth_nfp_vf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 484         struct rte_pci_device *pci_dev)
 485 {
 486         return rte_eth_dev_pci_generic_probe(pci_dev,
 487                 sizeof(struct nfp_net_adapter), nfp_netvf_init);
 488 }
 489
 490 static int eth_nfp_vf_pci_remove(struct rte_pci_device *pci_dev)
 491 {
 492         return rte_eth_dev_pci_generic_remove(pci_dev, nfp_vf_pci_uninit);
 493 }
 494
 495 static struct rte_pci_driver rte_nfp_net_vf_pmd = {
 496         .id_table = pci_id_nfp_vf_net_map,
 497         .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
 498         .probe = eth_nfp_vf_pci_probe,
 499         .remove = eth_nfp_vf_pci_remove,
 500 };
 501
 502 RTE_PMD_REGISTER_PCI(net_nfp_vf, rte_nfp_net_vf_pmd);
 503 RTE_PMD_REGISTER_PCI_TABLE(net_nfp_vf, pci_id_nfp_vf_net_map);
 504 RTE_PMD_REGISTER_KMOD_DEP(net_nfp_vf, "* igb_uio | uio_pci_generic | vfio");
 505 /*
 506  * Local variables:
 507  * c-file-style: "Linux"
 508  * indent-tabs-mode: t
 509  * End:
 510  */