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 (rte_intr_type_get(intr_handle) ==
  75                                                 RTE_INTR_HANDLE_UIO) {
  76                         /*
  77                          * Better not to share LSC with RX interrupts.
  78                          * Unregistering LSC interrupt handler
  79                          */
  80                         rte_intr_callback_unregister(pci_dev->intr_handle,
  81                                 nfp_net_dev_interrupt_handler, (void *)dev);
  82
  83                         if (dev->data->nb_rx_queues > 1) {
  84                                 PMD_INIT_LOG(ERR, "PMD rx interrupt only "
  85                                              "supports 1 queue with UIO");
  86                                 return -EIO;
  87                         }
  88                 }
  89                 intr_vector = dev->data->nb_rx_queues;
  90                 if (rte_intr_efd_enable(intr_handle, intr_vector))
  91                         return -1;
  92
  93                 nfp_configure_rx_interrupt(dev, intr_handle);
  94                 update = NFP_NET_CFG_UPDATE_MSIX;
  95         }
  96
  97         rte_intr_enable(intr_handle);
  98
  99         new_ctrl = nfp_check_offloads(dev);
 100
 101         /* Writing configuration parameters in the device */
 102         nfp_net_params_setup(hw);
 103
 104         dev_conf = &dev->data->dev_conf;
 105         rxmode = &dev_conf->rxmode;
 106
 107         if (rxmode->mq_mode & RTE_ETH_MQ_RX_RSS) {
 108                 nfp_net_rss_config_default(dev);
 109                 update |= NFP_NET_CFG_UPDATE_RSS;
 110                 new_ctrl |= NFP_NET_CFG_CTRL_RSS;
 111         }
 112
 113         /* Enable device */
 114         new_ctrl |= NFP_NET_CFG_CTRL_ENABLE;
 115
 116         update |= NFP_NET_CFG_UPDATE_GEN | NFP_NET_CFG_UPDATE_RING;
 117
 118         if (hw->cap & NFP_NET_CFG_CTRL_RINGCFG)
 119                 new_ctrl |= NFP_NET_CFG_CTRL_RINGCFG;
 120
 121         nn_cfg_writel(hw, NFP_NET_CFG_CTRL, new_ctrl);
 122         if (nfp_net_reconfig(hw, new_ctrl, update) < 0)
 123                 return -EIO;
 124
 125         /*
 126          * Allocating rte mbufs for configured rx queues.
 127          * This requires queues being enabled before
 128          */
 129         if (nfp_net_rx_freelist_setup(dev) < 0) {
 130                 ret = -ENOMEM;
 131                 goto error;
 132         }
 133
 134         hw->ctrl = new_ctrl;
 135
 136         return 0;
 137
 138 error:
 139         /*
 140          * An error returned by this function should mean the app
 141          * exiting and then the system releasing all the memory
 142          * allocated even memory coming from hugepages.
 143          *
 144          * The device could be enabled at this point with some queues
 145          * ready for getting packets. This is true if the call to
 146          * nfp_net_rx_freelist_setup() succeeds for some queues but
 147          * fails for subsequent queues.
 148          *
 149          * This should make the app exiting but better if we tell the
 150          * device first.
 151          */
 152         nfp_net_disable_queues(dev);
 153
 154         return ret;
 155 }
 156
 157 static int
 158 nfp_netvf_stop(struct rte_eth_dev *dev)
 159 {
 160         struct nfp_net_txq *this_tx_q;
 161         struct nfp_net_rxq *this_rx_q;
 162         int i;
 163
 164         PMD_INIT_LOG(DEBUG, "Stop");
 165
 166         nfp_net_disable_queues(dev);
 167
 168         /* Clear queues */
 169         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 170                 this_tx_q = (struct nfp_net_txq *)dev->data->tx_queues[i];
 171                 nfp_net_reset_tx_queue(this_tx_q);
 172         }
 173
 174         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 175                 this_rx_q = (struct nfp_net_rxq *)dev->data->rx_queues[i];
 176                 nfp_net_reset_rx_queue(this_rx_q);
 177         }
 178
 179         return 0;
 180 }
 181
 182 static int
 183 nfp_netvf_set_link_up(struct rte_eth_dev *dev __rte_unused)
 184 {
 185         return -ENOTSUP;
 186 }
 187
 188 /* Set the link down. */
 189 static int
 190 nfp_netvf_set_link_down(struct rte_eth_dev *dev __rte_unused)
 191 {
 192         return -ENOTSUP;
 193 }
 194
 195 /* Reset and stop device. The device can not be restarted. */
 196 static int
 197 nfp_netvf_close(struct rte_eth_dev *dev)
 198 {
 199         struct rte_pci_device *pci_dev;
 200         struct nfp_net_txq *this_tx_q;
 201         struct nfp_net_rxq *this_rx_q;
 202         int i;
 203
 204         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 205                 return 0;
 206
 207         PMD_INIT_LOG(DEBUG, "Close");
 208
 209         pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 210
 211         /*
 212          * We assume that the DPDK application is stopping all the
 213          * threads/queues before calling the device close function.
 214          */
 215
 216         nfp_net_disable_queues(dev);
 217
 218         /* Clear queues */
 219         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 220                 this_tx_q =  (struct nfp_net_txq *)dev->data->tx_queues[i];
 221                 nfp_net_reset_tx_queue(this_tx_q);
 222         }
 223
 224         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 225                 this_rx_q =  (struct nfp_net_rxq *)dev->data->rx_queues[i];
 226                 nfp_net_reset_rx_queue(this_rx_q);
 227         }
 228
 229         rte_intr_disable(pci_dev->intr_handle);
 230
 231         /* unregister callback func from eal lib */
 232         rte_intr_callback_unregister(pci_dev->intr_handle,
 233                                      nfp_net_dev_interrupt_handler,
 234                                      (void *)dev);
 235
 236         /* Cancel possible impending LSC work here before releasing the port*/
 237         rte_eal_alarm_cancel(nfp_net_dev_interrupt_delayed_handler,
 238                              (void *)dev);
 239
 240         /*
 241          * The ixgbe PMD disables the pcie master on the
 242          * device. The i40e does not...
 243          */
 244
 245         return 0;
 246 }
 247
 248 /* Initialise and register VF driver with DPDK Application */
 249 static const struct eth_dev_ops nfp_netvf_eth_dev_ops = {
 250         .dev_configure          = nfp_net_configure,
 251         .dev_start              = nfp_netvf_start,
 252         .dev_stop               = nfp_netvf_stop,
 253         .dev_set_link_up        = nfp_netvf_set_link_up,
 254         .dev_set_link_down      = nfp_netvf_set_link_down,
 255         .dev_close              = nfp_netvf_close,
 256         .promiscuous_enable     = nfp_net_promisc_enable,
 257         .promiscuous_disable    = nfp_net_promisc_disable,
 258         .link_update            = nfp_net_link_update,
 259         .stats_get              = nfp_net_stats_get,
 260         .stats_reset            = nfp_net_stats_reset,
 261         .dev_infos_get          = nfp_net_infos_get,
 262         .dev_supported_ptypes_get = nfp_net_supported_ptypes_get,
 263         .mtu_set                = nfp_net_dev_mtu_set,
 264         .mac_addr_set           = nfp_set_mac_addr,
 265         .vlan_offload_set       = nfp_net_vlan_offload_set,
 266         .reta_update            = nfp_net_reta_update,
 267         .reta_query             = nfp_net_reta_query,
 268         .rss_hash_update        = nfp_net_rss_hash_update,
 269         .rss_hash_conf_get      = nfp_net_rss_hash_conf_get,
 270         .rx_queue_setup         = nfp_net_rx_queue_setup,
 271         .rx_queue_release       = nfp_net_rx_queue_release,
 272         .tx_queue_setup         = nfp_net_tx_queue_setup,
 273         .tx_queue_release       = nfp_net_tx_queue_release,
 274         .rx_queue_intr_enable   = nfp_rx_queue_intr_enable,
 275         .rx_queue_intr_disable  = nfp_rx_queue_intr_disable,
 276 };
 277
 278 static int
 279 nfp_netvf_init(struct rte_eth_dev *eth_dev)
 280 {
 281         struct rte_pci_device *pci_dev;
 282         struct nfp_net_hw *hw;
 283         struct rte_ether_addr *tmp_ether_addr;
 284
 285         uint64_t tx_bar_off = 0, rx_bar_off = 0;
 286         uint32_t start_q;
 287         int stride = 4;
 288         int port = 0;
 289         int err;
 290
 291         PMD_INIT_FUNC_TRACE();
 292
 293         pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
 294
 295         /* NFP can not handle DMA addresses requiring more than 40 bits */
 296         if (rte_mem_check_dma_mask(40)) {
 297                 RTE_LOG(ERR, PMD, "device %s can not be used:",
 298                                    pci_dev->device.name);
 299                 RTE_LOG(ERR, PMD, "\trestricted dma mask to 40 bits!\n");
 300                 return -ENODEV;
 301         };
 302
 303         hw = NFP_NET_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
 304
 305         eth_dev->dev_ops = &nfp_netvf_eth_dev_ops;
 306         eth_dev->rx_queue_count = nfp_net_rx_queue_count;
 307         eth_dev->rx_pkt_burst = &nfp_net_recv_pkts;
 308         eth_dev->tx_pkt_burst = &nfp_net_xmit_pkts;
 309
 310         /* For secondary processes, the primary has done all the work */
 311         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 312                 return 0;
 313
 314         rte_eth_copy_pci_info(eth_dev, pci_dev);
 315
 316         hw->device_id = pci_dev->id.device_id;
 317         hw->vendor_id = pci_dev->id.vendor_id;
 318         hw->subsystem_device_id = pci_dev->id.subsystem_device_id;
 319         hw->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id;
 320
 321         PMD_INIT_LOG(DEBUG, "nfp_net: device (%u:%u) %u:%u:%u:%u",
 322                      pci_dev->id.vendor_id, pci_dev->id.device_id,
 323                      pci_dev->addr.domain, pci_dev->addr.bus,
 324                      pci_dev->addr.devid, pci_dev->addr.function);
 325
 326         hw->ctrl_bar = (uint8_t *)pci_dev->mem_resource[0].addr;
 327         if (hw->ctrl_bar == NULL) {
 328                 PMD_DRV_LOG(ERR,
 329                         "hw->ctrl_bar is NULL. BAR0 not configured");
 330                 return -ENODEV;
 331         }
 332
 333         PMD_INIT_LOG(DEBUG, "ctrl bar: %p", hw->ctrl_bar);
 334
 335         hw->max_rx_queues = nn_cfg_readl(hw, NFP_NET_CFG_MAX_RXRINGS);
 336         hw->max_tx_queues = nn_cfg_readl(hw, NFP_NET_CFG_MAX_TXRINGS);
 337
 338         /* Work out where in the BAR the queues start. */
 339         switch (pci_dev->id.device_id) {
 340         case PCI_DEVICE_ID_NFP6000_VF_NIC:
 341                 start_q = nn_cfg_readl(hw, NFP_NET_CFG_START_TXQ);
 342                 tx_bar_off = (uint64_t)start_q * NFP_QCP_QUEUE_ADDR_SZ;
 343                 start_q = nn_cfg_readl(hw, NFP_NET_CFG_START_RXQ);
 344                 rx_bar_off = (uint64_t)start_q * NFP_QCP_QUEUE_ADDR_SZ;
 345                 break;
 346         default:
 347                 PMD_DRV_LOG(ERR, "nfp_net: no device ID matching");
 348                 err = -ENODEV;
 349                 goto dev_err_ctrl_map;
 350         }
 351
 352         PMD_INIT_LOG(DEBUG, "tx_bar_off: 0x%" PRIx64 "", tx_bar_off);
 353         PMD_INIT_LOG(DEBUG, "rx_bar_off: 0x%" PRIx64 "", rx_bar_off);
 354
 355         hw->tx_bar = (uint8_t *)pci_dev->mem_resource[2].addr +
 356                      tx_bar_off;
 357         hw->rx_bar = (uint8_t *)pci_dev->mem_resource[2].addr +
 358                      rx_bar_off;
 359
 360         PMD_INIT_LOG(DEBUG, "ctrl_bar: %p, tx_bar: %p, rx_bar: %p",
 361                      hw->ctrl_bar, hw->tx_bar, hw->rx_bar);
 362
 363         nfp_net_cfg_queue_setup(hw);
 364
 365         /* Get some of the read-only fields from the config BAR */
 366         hw->ver = nn_cfg_readl(hw, NFP_NET_CFG_VERSION);
 367         hw->cap = nn_cfg_readl(hw, NFP_NET_CFG_CAP);
 368         hw->max_mtu = nn_cfg_readl(hw, NFP_NET_CFG_MAX_MTU);
 369         hw->mtu = RTE_ETHER_MTU;
 370
 371         /* VLAN insertion is incompatible with LSOv2 */
 372         if (hw->cap & NFP_NET_CFG_CTRL_LSO2)
 373                 hw->cap &= ~NFP_NET_CFG_CTRL_TXVLAN;
 374
 375         if (NFD_CFG_MAJOR_VERSION_of(hw->ver) < 2)
 376                 hw->rx_offset = NFP_NET_RX_OFFSET;
 377         else
 378                 hw->rx_offset = nn_cfg_readl(hw, NFP_NET_CFG_RX_OFFSET_ADDR);
 379
 380         PMD_INIT_LOG(INFO, "VER: %u.%u, Maximum supported MTU: %d",
 381                            NFD_CFG_MAJOR_VERSION_of(hw->ver),
 382                            NFD_CFG_MINOR_VERSION_of(hw->ver), hw->max_mtu);
 383
 384         PMD_INIT_LOG(INFO, "CAP: %#x, %s%s%s%s%s%s%s%s%s%s%s%s%s%s", hw->cap,
 385                      hw->cap & NFP_NET_CFG_CTRL_PROMISC ? "PROMISC " : "",
 386                      hw->cap & NFP_NET_CFG_CTRL_L2BC    ? "L2BCFILT " : "",
 387                      hw->cap & NFP_NET_CFG_CTRL_L2MC    ? "L2MCFILT " : "",
 388                      hw->cap & NFP_NET_CFG_CTRL_RXCSUM  ? "RXCSUM "  : "",
 389                      hw->cap & NFP_NET_CFG_CTRL_TXCSUM  ? "TXCSUM "  : "",
 390                      hw->cap & NFP_NET_CFG_CTRL_RXVLAN  ? "RXVLAN "  : "",
 391                      hw->cap & NFP_NET_CFG_CTRL_TXVLAN  ? "TXVLAN "  : "",
 392                      hw->cap & NFP_NET_CFG_CTRL_SCATTER ? "SCATTER " : "",
 393                      hw->cap & NFP_NET_CFG_CTRL_GATHER  ? "GATHER "  : "",
 394                      hw->cap & NFP_NET_CFG_CTRL_LIVE_ADDR ? "LIVE_ADDR "  : "",
 395                      hw->cap & NFP_NET_CFG_CTRL_LSO     ? "TSO "     : "",
 396                      hw->cap & NFP_NET_CFG_CTRL_LSO2     ? "TSOv2 "     : "",
 397                      hw->cap & NFP_NET_CFG_CTRL_RSS     ? "RSS "     : "",
 398                      hw->cap & NFP_NET_CFG_CTRL_RSS2     ? "RSSv2 "     : "");
 399
 400         hw->ctrl = 0;
 401
 402         hw->stride_rx = stride;
 403         hw->stride_tx = stride;
 404
 405         PMD_INIT_LOG(INFO, "max_rx_queues: %u, max_tx_queues: %u",
 406                      hw->max_rx_queues, hw->max_tx_queues);
 407
 408         /* Initializing spinlock for reconfigs */
 409         rte_spinlock_init(&hw->reconfig_lock);
 410
 411         /* Allocating memory for mac addr */
 412         eth_dev->data->mac_addrs = rte_zmalloc("mac_addr",
 413                                                RTE_ETHER_ADDR_LEN, 0);
 414         if (eth_dev->data->mac_addrs == NULL) {
 415                 PMD_INIT_LOG(ERR, "Failed to space for MAC address");
 416                 err = -ENOMEM;
 417                 goto dev_err_queues_map;
 418         }
 419
 420         nfp_netvf_read_mac(hw);
 421
 422         tmp_ether_addr = (struct rte_ether_addr *)&hw->mac_addr;
 423         if (!rte_is_valid_assigned_ether_addr(tmp_ether_addr)) {
 424                 PMD_INIT_LOG(INFO, "Using random mac address for port %d",
 425                                    port);
 426                 /* Using random mac addresses for VFs */
 427                 rte_eth_random_addr(&hw->mac_addr[0]);
 428                 nfp_net_write_mac(hw, (uint8_t *)&hw->mac_addr);
 429         }
 430
 431         /* Copying mac address to DPDK eth_dev struct */
 432         rte_ether_addr_copy((struct rte_ether_addr *)hw->mac_addr,
 433                         &eth_dev->data->mac_addrs[0]);
 434
 435         if (!(hw->cap & NFP_NET_CFG_CTRL_LIVE_ADDR))
 436                 eth_dev->data->dev_flags |= RTE_ETH_DEV_NOLIVE_MAC_ADDR;
 437
 438         eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
 439
 440         PMD_INIT_LOG(INFO, "port %d VendorID=0x%x DeviceID=0x%x "
 441                      "mac=%02x:%02x:%02x:%02x:%02x:%02x",
 442                      eth_dev->data->port_id, pci_dev->id.vendor_id,
 443                      pci_dev->id.device_id,
 444                      hw->mac_addr[0], hw->mac_addr[1], hw->mac_addr[2],
 445                      hw->mac_addr[3], hw->mac_addr[4], hw->mac_addr[5]);
 446
 447         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 448                 /* Registering LSC interrupt handler */
 449                 rte_intr_callback_register(pci_dev->intr_handle,
 450                                            nfp_net_dev_interrupt_handler,
 451                                            (void *)eth_dev);
 452                 /* Telling the firmware about the LSC interrupt entry */
 453                 nn_cfg_writeb(hw, NFP_NET_CFG_LSC, NFP_NET_IRQ_LSC_IDX);
 454                 /* Recording current stats counters values */
 455                 nfp_net_stats_reset(eth_dev);
 456         }
 457
 458         return 0;
 459
 460 dev_err_queues_map:
 461                 nfp_cpp_area_free(hw->hwqueues_area);
 462 dev_err_ctrl_map:
 463                 nfp_cpp_area_free(hw->ctrl_area);
 464
 465         return err;
 466 }
 467
 468 static const struct rte_pci_id pci_id_nfp_vf_net_map[] = {
 469         {
 470                 RTE_PCI_DEVICE(PCI_VENDOR_ID_NETRONOME,
 471                                PCI_DEVICE_ID_NFP6000_VF_NIC)
 472         },
 473         {
 474                 .vendor_id = 0,
 475         },
 476 };
 477
 478 static int nfp_vf_pci_uninit(struct rte_eth_dev *eth_dev)
 479 {
 480         /* VF cleanup, just free private port data */
 481         return nfp_netvf_close(eth_dev);
 482 }
 483
 484 static int eth_nfp_vf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 485         struct rte_pci_device *pci_dev)
 486 {
 487         return rte_eth_dev_pci_generic_probe(pci_dev,
 488                 sizeof(struct nfp_net_adapter), nfp_netvf_init);
 489 }
 490
 491 static int eth_nfp_vf_pci_remove(struct rte_pci_device *pci_dev)
 492 {
 493         return rte_eth_dev_pci_generic_remove(pci_dev, nfp_vf_pci_uninit);
 494 }
 495
 496 static struct rte_pci_driver rte_nfp_net_vf_pmd = {
 497         .id_table = pci_id_nfp_vf_net_map,
 498         .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
 499         .probe = eth_nfp_vf_pci_probe,
 500         .remove = eth_nfp_vf_pci_remove,
 501 };
 502
 503 RTE_PMD_REGISTER_PCI(net_nfp_vf, rte_nfp_net_vf_pmd);
 504 RTE_PMD_REGISTER_PCI_TABLE(net_nfp_vf, pci_id_nfp_vf_net_map);
 505 RTE_PMD_REGISTER_KMOD_DEP(net_nfp_vf, "* igb_uio | uio_pci_generic | vfio");
 506 /*
 507  * Local variables:
 508  * c-file-style: "Linux"
 509  * indent-tabs-mode: t
 510  * End:
 511  */