drivers/net/thunderx/nicvf_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016 Cavium, Inc
   3  */
   4
   5 #include <assert.h>
   6 #include <stdio.h>
   7 #include <stdbool.h>
   8 #include <errno.h>
   9 #include <stdint.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12 #include <stdarg.h>
  13 #include <inttypes.h>
  14 #include <netinet/in.h>
  15 #include <sys/queue.h>
  16
  17 #include <rte_alarm.h>
  18 #include <rte_branch_prediction.h>
  19 #include <rte_byteorder.h>
  20 #include <rte_common.h>
  21 #include <rte_cycles.h>
  22 #include <rte_debug.h>
  23 #include <rte_dev.h>
  24 #include <rte_eal.h>
  25 #include <rte_ether.h>
  26 #include <rte_ethdev_driver.h>
  27 #include <rte_ethdev_pci.h>
  28 #include <rte_interrupts.h>
  29 #include <rte_log.h>
  30 #include <rte_memory.h>
  31 #include <rte_memzone.h>
  32 #include <rte_malloc.h>
  33 #include <rte_random.h>
  34 #include <rte_pci.h>
  35 #include <rte_bus_pci.h>
  36 #include <rte_tailq.h>
  37
  38 #include "base/nicvf_plat.h"
  39
  40 #include "nicvf_ethdev.h"
  41 #include "nicvf_rxtx.h"
  42 #include "nicvf_svf.h"
  43 #include "nicvf_logs.h"
  44
  45 int nicvf_logtype_mbox;
  46 int nicvf_logtype_init;
  47 int nicvf_logtype_driver;
  48
  49 static void nicvf_dev_stop(struct rte_eth_dev *dev);
  50 static void nicvf_dev_stop_cleanup(struct rte_eth_dev *dev, bool cleanup);
  51 static void nicvf_vf_stop(struct rte_eth_dev *dev, struct nicvf *nic,
  52                           bool cleanup);
  53
  54 RTE_INIT(nicvf_init_log);
  55 static void
  56 nicvf_init_log(void)
  57 {
  58         nicvf_logtype_mbox = rte_log_register("pmd.net.thunderx.mbox");
  59         if (nicvf_logtype_mbox >= 0)
  60                 rte_log_set_level(nicvf_logtype_mbox, RTE_LOG_NOTICE);
  61
  62         nicvf_logtype_init = rte_log_register("pmd.net.thunderx.init");
  63         if (nicvf_logtype_init >= 0)
  64                 rte_log_set_level(nicvf_logtype_init, RTE_LOG_NOTICE);
  65
  66         nicvf_logtype_driver = rte_log_register("pmd.net.thunderx.driver");
  67         if (nicvf_logtype_driver >= 0)
  68                 rte_log_set_level(nicvf_logtype_driver, RTE_LOG_NOTICE);
  69 }
  70
  71 static void
  72 nicvf_link_status_update(struct nicvf *nic,
  73                          struct rte_eth_link *link)
  74 {
  75         memset(link, 0, sizeof(*link));
  76
  77         link->link_status = nic->link_up ? ETH_LINK_UP : ETH_LINK_DOWN;
  78
  79         if (nic->duplex == NICVF_HALF_DUPLEX)
  80                 link->link_duplex = ETH_LINK_HALF_DUPLEX;
  81         else if (nic->duplex == NICVF_FULL_DUPLEX)
  82                 link->link_duplex = ETH_LINK_FULL_DUPLEX;
  83         link->link_speed = nic->speed;
  84         link->link_autoneg = ETH_LINK_AUTONEG;
  85 }
  86
  87 static void
  88 nicvf_interrupt(void *arg)
  89 {
  90         struct rte_eth_dev *dev = arg;
  91         struct nicvf *nic = nicvf_pmd_priv(dev);
  92         struct rte_eth_link link;
  93
  94         if (nicvf_reg_poll_interrupts(nic) == NIC_MBOX_MSG_BGX_LINK_CHANGE) {
  95                 if (dev->data->dev_conf.intr_conf.lsc) {
  96                         nicvf_link_status_update(nic, &link);
  97                         rte_eth_linkstatus_set(dev, &link);
  98
  99                         _rte_eth_dev_callback_process(dev,
 100                                                       RTE_ETH_EVENT_INTR_LSC,
 101                                                       NULL);
 102                 }
 103         }
 104
 105         rte_eal_alarm_set(NICVF_INTR_POLL_INTERVAL_MS * 1000,
 106                                 nicvf_interrupt, dev);
 107 }
 108
 109 static void
 110 nicvf_vf_interrupt(void *arg)
 111 {
 112         struct nicvf *nic = arg;
 113
 114         nicvf_reg_poll_interrupts(nic);
 115
 116         rte_eal_alarm_set(NICVF_INTR_POLL_INTERVAL_MS * 1000,
 117                                 nicvf_vf_interrupt, nic);
 118 }
 119
 120 static int
 121 nicvf_periodic_alarm_start(void (fn)(void *), void *arg)
 122 {
 123         return rte_eal_alarm_set(NICVF_INTR_POLL_INTERVAL_MS * 1000, fn, arg);
 124 }
 125
 126 static int
 127 nicvf_periodic_alarm_stop(void (fn)(void *), void *arg)
 128 {
 129         return rte_eal_alarm_cancel(fn, arg);
 130 }
 131
 132 /*
 133  * Return 0 means link status changed, -1 means not changed
 134  */
 135 static int
 136 nicvf_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 137 {
 138 #define CHECK_INTERVAL 100  /* 100ms */
 139 #define MAX_CHECK_TIME 90   /* 9s (90 * 100ms) in total */
 140         struct rte_eth_link link;
 141         struct nicvf *nic = nicvf_pmd_priv(dev);
 142         int i;
 143
 144         PMD_INIT_FUNC_TRACE();
 145
 146         if (wait_to_complete) {
 147                 /* rte_eth_link_get() might need to wait up to 9 seconds */
 148                 for (i = 0; i < MAX_CHECK_TIME; i++) {
 149                         nicvf_link_status_update(nic, &link);
 150                         if (link.link_status == ETH_LINK_UP)
 151                                 break;
 152                         rte_delay_ms(CHECK_INTERVAL);
 153                 }
 154         } else {
 155                 nicvf_link_status_update(nic, &link);
 156         }
 157
 158         return rte_eth_linkstatus_set(dev, &link);
 159 }
 160
 161 static int
 162 nicvf_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 163 {
 164         struct nicvf *nic = nicvf_pmd_priv(dev);
 165         uint32_t buffsz, frame_size = mtu + NIC_HW_L2_OVERHEAD;
 166         size_t i;
 167         struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
 168
 169         PMD_INIT_FUNC_TRACE();
 170
 171         if (frame_size > NIC_HW_MAX_FRS)
 172                 return -EINVAL;
 173
 174         if (frame_size < NIC_HW_MIN_FRS)
 175                 return -EINVAL;
 176
 177         buffsz = dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM;
 178
 179         /*
 180          * Refuse mtu that requires the support of scattered packets
 181          * when this feature has not been enabled before.
 182          */
 183         if (dev->data->dev_started && !dev->data->scattered_rx &&
 184                 (frame_size + 2 * VLAN_TAG_SIZE > buffsz))
 185                 return -EINVAL;
 186
 187         /* check <seg size> * <max_seg>  >= max_frame */
 188         if (dev->data->scattered_rx &&
 189                 (frame_size + 2 * VLAN_TAG_SIZE > buffsz * NIC_HW_MAX_SEGS))
 190                 return -EINVAL;
 191
 192         if (frame_size > ETHER_MAX_LEN)
 193                 rxmode->offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
 194         else
 195                 rxmode->offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
 196
 197         if (nicvf_mbox_update_hw_max_frs(nic, mtu))
 198                 return -EINVAL;
 199
 200         /* Update max_rx_pkt_len */
 201         rxmode->max_rx_pkt_len = mtu + ETHER_HDR_LEN;
 202         nic->mtu = mtu;
 203
 204         for (i = 0; i < nic->sqs_count; i++)
 205                 nic->snicvf[i]->mtu = mtu;
 206
 207         return 0;
 208 }
 209
 210 static int
 211 nicvf_dev_get_regs(struct rte_eth_dev *dev, struct rte_dev_reg_info *regs)
 212 {
 213         uint64_t *data = regs->data;
 214         struct nicvf *nic = nicvf_pmd_priv(dev);
 215
 216         if (data == NULL) {
 217                 regs->length = nicvf_reg_get_count();
 218                 regs->width = THUNDERX_REG_BYTES;
 219                 return 0;
 220         }
 221
 222         /* Support only full register dump */
 223         if ((regs->length == 0) ||
 224                 (regs->length == (uint32_t)nicvf_reg_get_count())) {
 225                 regs->version = nic->vendor_id << 16 | nic->device_id;
 226                 nicvf_reg_dump(nic, data);
 227                 return 0;
 228         }
 229         return -ENOTSUP;
 230 }
 231
 232 static int
 233 nicvf_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 234 {
 235         uint16_t qidx;
 236         struct nicvf_hw_rx_qstats rx_qstats;
 237         struct nicvf_hw_tx_qstats tx_qstats;
 238         struct nicvf_hw_stats port_stats;
 239         struct nicvf *nic = nicvf_pmd_priv(dev);
 240         uint16_t rx_start, rx_end;
 241         uint16_t tx_start, tx_end;
 242         size_t i;
 243
 244         /* RX queue indices for the first VF */
 245         nicvf_rx_range(dev, nic, &rx_start, &rx_end);
 246
 247         /* Reading per RX ring stats */
 248         for (qidx = rx_start; qidx <= rx_end; qidx++) {
 249                 if (qidx >= RTE_ETHDEV_QUEUE_STAT_CNTRS)
 250                         break;
 251
 252                 nicvf_hw_get_rx_qstats(nic, &rx_qstats, qidx);
 253                 stats->q_ibytes[qidx] = rx_qstats.q_rx_bytes;
 254                 stats->q_ipackets[qidx] = rx_qstats.q_rx_packets;
 255         }
 256
 257         /* TX queue indices for the first VF */
 258         nicvf_tx_range(dev, nic, &tx_start, &tx_end);
 259
 260         /* Reading per TX ring stats */
 261         for (qidx = tx_start; qidx <= tx_end; qidx++) {
 262                 if (qidx >= RTE_ETHDEV_QUEUE_STAT_CNTRS)
 263                         break;
 264
 265                 nicvf_hw_get_tx_qstats(nic, &tx_qstats, qidx);
 266                 stats->q_obytes[qidx] = tx_qstats.q_tx_bytes;
 267                 stats->q_opackets[qidx] = tx_qstats.q_tx_packets;
 268         }
 269
 270         for (i = 0; i < nic->sqs_count; i++) {
 271                 struct nicvf *snic = nic->snicvf[i];
 272
 273                 if (snic == NULL)
 274                         break;
 275
 276                 /* RX queue indices for a secondary VF */
 277                 nicvf_rx_range(dev, snic, &rx_start, &rx_end);
 278
 279                 /* Reading per RX ring stats */
 280                 for (qidx = rx_start; qidx <= rx_end; qidx++) {
 281                         if (qidx >= RTE_ETHDEV_QUEUE_STAT_CNTRS)
 282                                 break;
 283
 284                         nicvf_hw_get_rx_qstats(snic, &rx_qstats,
 285                                                qidx % MAX_RCV_QUEUES_PER_QS);
 286                         stats->q_ibytes[qidx] = rx_qstats.q_rx_bytes;
 287                         stats->q_ipackets[qidx] = rx_qstats.q_rx_packets;
 288                 }
 289
 290                 /* TX queue indices for a secondary VF */
 291                 nicvf_tx_range(dev, snic, &tx_start, &tx_end);
 292                 /* Reading per TX ring stats */
 293                 for (qidx = tx_start; qidx <= tx_end; qidx++) {
 294                         if (qidx >= RTE_ETHDEV_QUEUE_STAT_CNTRS)
 295                                 break;
 296
 297                         nicvf_hw_get_tx_qstats(snic, &tx_qstats,
 298                                                qidx % MAX_SND_QUEUES_PER_QS);
 299                         stats->q_obytes[qidx] = tx_qstats.q_tx_bytes;
 300                         stats->q_opackets[qidx] = tx_qstats.q_tx_packets;
 301                 }
 302         }
 303
 304         nicvf_hw_get_stats(nic, &port_stats);
 305         stats->ibytes = port_stats.rx_bytes;
 306         stats->ipackets = port_stats.rx_ucast_frames;
 307         stats->ipackets += port_stats.rx_bcast_frames;
 308         stats->ipackets += port_stats.rx_mcast_frames;
 309         stats->ierrors = port_stats.rx_l2_errors;
 310         stats->imissed = port_stats.rx_drop_red;
 311         stats->imissed += port_stats.rx_drop_overrun;
 312         stats->imissed += port_stats.rx_drop_bcast;
 313         stats->imissed += port_stats.rx_drop_mcast;
 314         stats->imissed += port_stats.rx_drop_l3_bcast;
 315         stats->imissed += port_stats.rx_drop_l3_mcast;
 316
 317         stats->obytes = port_stats.tx_bytes_ok;
 318         stats->opackets = port_stats.tx_ucast_frames_ok;
 319         stats->opackets += port_stats.tx_bcast_frames_ok;
 320         stats->opackets += port_stats.tx_mcast_frames_ok;
 321         stats->oerrors = port_stats.tx_drops;
 322
 323         return 0;
 324 }
 325
 326 static const uint32_t *
 327 nicvf_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 328 {
 329         size_t copied;
 330         static uint32_t ptypes[32];
 331         struct nicvf *nic = nicvf_pmd_priv(dev);
 332         static const uint32_t ptypes_common[] = {
 333                 RTE_PTYPE_L3_IPV4,
 334                 RTE_PTYPE_L3_IPV4_EXT,
 335                 RTE_PTYPE_L3_IPV6,
 336                 RTE_PTYPE_L3_IPV6_EXT,
 337                 RTE_PTYPE_L4_TCP,
 338                 RTE_PTYPE_L4_UDP,
 339                 RTE_PTYPE_L4_FRAG,
 340         };
 341         static const uint32_t ptypes_tunnel[] = {
 342                 RTE_PTYPE_TUNNEL_GRE,
 343                 RTE_PTYPE_TUNNEL_GENEVE,
 344                 RTE_PTYPE_TUNNEL_VXLAN,
 345                 RTE_PTYPE_TUNNEL_NVGRE,
 346         };
 347         static const uint32_t ptypes_end = RTE_PTYPE_UNKNOWN;
 348
 349         copied = sizeof(ptypes_common);
 350         memcpy(ptypes, ptypes_common, copied);
 351         if (nicvf_hw_cap(nic) & NICVF_CAP_TUNNEL_PARSING) {
 352                 memcpy((char *)ptypes + copied, ptypes_tunnel,
 353                         sizeof(ptypes_tunnel));
 354                 copied += sizeof(ptypes_tunnel);
 355         }
 356
 357         memcpy((char *)ptypes + copied, &ptypes_end, sizeof(ptypes_end));
 358         if (dev->rx_pkt_burst == nicvf_recv_pkts ||
 359                 dev->rx_pkt_burst == nicvf_recv_pkts_multiseg)
 360                 return ptypes;
 361
 362         return NULL;
 363 }
 364
 365 static void
 366 nicvf_dev_stats_reset(struct rte_eth_dev *dev)
 367 {
 368         int i;
 369         uint16_t rxqs = 0, txqs = 0;
 370         struct nicvf *nic = nicvf_pmd_priv(dev);
 371         uint16_t rx_start, rx_end;
 372         uint16_t tx_start, tx_end;
 373
 374         /* Reset all primary nic counters */
 375         nicvf_rx_range(dev, nic, &rx_start, &rx_end);
 376         for (i = rx_start; i <= rx_end; i++)
 377                 rxqs |= (0x3 << (i * 2));
 378
 379         nicvf_tx_range(dev, nic, &tx_start, &tx_end);
 380         for (i = tx_start; i <= tx_end; i++)
 381                 txqs |= (0x3 << (i * 2));
 382
 383         nicvf_mbox_reset_stat_counters(nic, 0x3FFF, 0x1F, rxqs, txqs);
 384
 385         /* Reset secondary nic queue counters */
 386         for (i = 0; i < nic->sqs_count; i++) {
 387                 struct nicvf *snic = nic->snicvf[i];
 388                 if (snic == NULL)
 389                         break;
 390
 391                 nicvf_rx_range(dev, snic, &rx_start, &rx_end);
 392                 for (i = rx_start; i <= rx_end; i++)
 393                         rxqs |= (0x3 << ((i % MAX_CMP_QUEUES_PER_QS) * 2));
 394
 395                 nicvf_tx_range(dev, snic, &tx_start, &tx_end);
 396                 for (i = tx_start; i <= tx_end; i++)
 397                         txqs |= (0x3 << ((i % MAX_SND_QUEUES_PER_QS) * 2));
 398
 399                 nicvf_mbox_reset_stat_counters(snic, 0, 0, rxqs, txqs);
 400         }
 401 }
 402
 403 /* Promiscuous mode enabled by default in LMAC to VF 1:1 map configuration */
 404 static void
 405 nicvf_dev_promisc_enable(struct rte_eth_dev *dev __rte_unused)
 406 {
 407 }
 408
 409 static inline uint64_t
 410 nicvf_rss_ethdev_to_nic(struct nicvf *nic, uint64_t ethdev_rss)
 411 {
 412         uint64_t nic_rss = 0;
 413
 414         if (ethdev_rss & ETH_RSS_IPV4)
 415                 nic_rss |= RSS_IP_ENA;
 416
 417         if (ethdev_rss & ETH_RSS_IPV6)
 418                 nic_rss |= RSS_IP_ENA;
 419
 420         if (ethdev_rss & ETH_RSS_NONFRAG_IPV4_UDP)
 421                 nic_rss |= (RSS_IP_ENA | RSS_UDP_ENA);
 422
 423         if (ethdev_rss & ETH_RSS_NONFRAG_IPV4_TCP)
 424                 nic_rss |= (RSS_IP_ENA | RSS_TCP_ENA);
 425
 426         if (ethdev_rss & ETH_RSS_NONFRAG_IPV6_UDP)
 427                 nic_rss |= (RSS_IP_ENA | RSS_UDP_ENA);
 428
 429         if (ethdev_rss & ETH_RSS_NONFRAG_IPV6_TCP)
 430                 nic_rss |= (RSS_IP_ENA | RSS_TCP_ENA);
 431
 432         if (ethdev_rss & ETH_RSS_PORT)
 433                 nic_rss |= RSS_L2_EXTENDED_HASH_ENA;
 434
 435         if (nicvf_hw_cap(nic) & NICVF_CAP_TUNNEL_PARSING) {
 436                 if (ethdev_rss & ETH_RSS_VXLAN)
 437                         nic_rss |= RSS_TUN_VXLAN_ENA;
 438
 439                 if (ethdev_rss & ETH_RSS_GENEVE)
 440                         nic_rss |= RSS_TUN_GENEVE_ENA;
 441
 442                 if (ethdev_rss & ETH_RSS_NVGRE)
 443                         nic_rss |= RSS_TUN_NVGRE_ENA;
 444         }
 445
 446         return nic_rss;
 447 }
 448
 449 static inline uint64_t
 450 nicvf_rss_nic_to_ethdev(struct nicvf *nic,  uint64_t nic_rss)
 451 {
 452         uint64_t ethdev_rss = 0;
 453
 454         if (nic_rss & RSS_IP_ENA)
 455                 ethdev_rss |= (ETH_RSS_IPV4 | ETH_RSS_IPV6);
 456
 457         if ((nic_rss & RSS_IP_ENA) && (nic_rss & RSS_TCP_ENA))
 458                 ethdev_rss |= (ETH_RSS_NONFRAG_IPV4_TCP |
 459                                 ETH_RSS_NONFRAG_IPV6_TCP);
 460
 461         if ((nic_rss & RSS_IP_ENA) && (nic_rss & RSS_UDP_ENA))
 462                 ethdev_rss |= (ETH_RSS_NONFRAG_IPV4_UDP |
 463                                 ETH_RSS_NONFRAG_IPV6_UDP);
 464
 465         if (nic_rss & RSS_L2_EXTENDED_HASH_ENA)
 466                 ethdev_rss |= ETH_RSS_PORT;
 467
 468         if (nicvf_hw_cap(nic) & NICVF_CAP_TUNNEL_PARSING) {
 469                 if (nic_rss & RSS_TUN_VXLAN_ENA)
 470                         ethdev_rss |= ETH_RSS_VXLAN;
 471
 472                 if (nic_rss & RSS_TUN_GENEVE_ENA)
 473                         ethdev_rss |= ETH_RSS_GENEVE;
 474
 475                 if (nic_rss & RSS_TUN_NVGRE_ENA)
 476                         ethdev_rss |= ETH_RSS_NVGRE;
 477         }
 478         return ethdev_rss;
 479 }
 480
 481 static int
 482 nicvf_dev_reta_query(struct rte_eth_dev *dev,
 483                      struct rte_eth_rss_reta_entry64 *reta_conf,
 484                      uint16_t reta_size)
 485 {
 486         struct nicvf *nic = nicvf_pmd_priv(dev);
 487         uint8_t tbl[NIC_MAX_RSS_IDR_TBL_SIZE];
 488         int ret, i, j;
 489
 490         if (reta_size != NIC_MAX_RSS_IDR_TBL_SIZE) {
 491                 RTE_LOG(ERR, PMD, "The size of hash lookup table configured "
 492                         "(%d) doesn't match the number hardware can supported "
 493                         "(%d)", reta_size, NIC_MAX_RSS_IDR_TBL_SIZE);
 494                 return -EINVAL;
 495         }
 496
 497         ret = nicvf_rss_reta_query(nic, tbl, NIC_MAX_RSS_IDR_TBL_SIZE);
 498         if (ret)
 499                 return ret;
 500
 501         /* Copy RETA table */
 502         for (i = 0; i < (NIC_MAX_RSS_IDR_TBL_SIZE / RTE_RETA_GROUP_SIZE); i++) {
 503                 for (j = 0; j < RTE_RETA_GROUP_SIZE; j++)
 504                         if ((reta_conf[i].mask >> j) & 0x01)
 505                                 reta_conf[i].reta[j] = tbl[j];
 506         }
 507
 508         return 0;
 509 }
 510
 511 static int
 512 nicvf_dev_reta_update(struct rte_eth_dev *dev,
 513                       struct rte_eth_rss_reta_entry64 *reta_conf,
 514                       uint16_t reta_size)
 515 {
 516         struct nicvf *nic = nicvf_pmd_priv(dev);
 517         uint8_t tbl[NIC_MAX_RSS_IDR_TBL_SIZE];
 518         int ret, i, j;
 519
 520         if (reta_size != NIC_MAX_RSS_IDR_TBL_SIZE) {
 521                 RTE_LOG(ERR, PMD, "The size of hash lookup table configured "
 522                         "(%d) doesn't match the number hardware can supported "
 523                         "(%d)", reta_size, NIC_MAX_RSS_IDR_TBL_SIZE);
 524                 return -EINVAL;
 525         }
 526
 527         ret = nicvf_rss_reta_query(nic, tbl, NIC_MAX_RSS_IDR_TBL_SIZE);
 528         if (ret)
 529                 return ret;
 530
 531         /* Copy RETA table */
 532         for (i = 0; i < (NIC_MAX_RSS_IDR_TBL_SIZE / RTE_RETA_GROUP_SIZE); i++) {
 533                 for (j = 0; j < RTE_RETA_GROUP_SIZE; j++)
 534                         if ((reta_conf[i].mask >> j) & 0x01)
 535                                 tbl[j] = reta_conf[i].reta[j];
 536         }
 537
 538         return nicvf_rss_reta_update(nic, tbl, NIC_MAX_RSS_IDR_TBL_SIZE);
 539 }
 540
 541 static int
 542 nicvf_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 543                             struct rte_eth_rss_conf *rss_conf)
 544 {
 545         struct nicvf *nic = nicvf_pmd_priv(dev);
 546
 547         if (rss_conf->rss_key)
 548                 nicvf_rss_get_key(nic, rss_conf->rss_key);
 549
 550         rss_conf->rss_key_len =  RSS_HASH_KEY_BYTE_SIZE;
 551         rss_conf->rss_hf = nicvf_rss_nic_to_ethdev(nic, nicvf_rss_get_cfg(nic));
 552         return 0;
 553 }
 554
 555 static int
 556 nicvf_dev_rss_hash_update(struct rte_eth_dev *dev,
 557                           struct rte_eth_rss_conf *rss_conf)
 558 {
 559         struct nicvf *nic = nicvf_pmd_priv(dev);
 560         uint64_t nic_rss;
 561
 562         if (rss_conf->rss_key &&
 563                 rss_conf->rss_key_len != RSS_HASH_KEY_BYTE_SIZE) {
 564                 RTE_LOG(ERR, PMD, "Hash key size mismatch %d",
 565                                 rss_conf->rss_key_len);
 566                 return -EINVAL;
 567         }
 568
 569         if (rss_conf->rss_key)
 570                 nicvf_rss_set_key(nic, rss_conf->rss_key);
 571
 572         nic_rss = nicvf_rss_ethdev_to_nic(nic, rss_conf->rss_hf);
 573         nicvf_rss_set_cfg(nic, nic_rss);
 574         return 0;
 575 }
 576
 577 static int
 578 nicvf_qset_cq_alloc(struct rte_eth_dev *dev, struct nicvf *nic,
 579                     struct nicvf_rxq *rxq, uint16_t qidx, uint32_t desc_cnt)
 580 {
 581         const struct rte_memzone *rz;
 582         uint32_t ring_size = CMP_QUEUE_SZ_MAX * sizeof(union cq_entry_t);
 583
 584         rz = rte_eth_dma_zone_reserve(dev, "cq_ring",
 585                                       nicvf_netdev_qidx(nic, qidx), ring_size,
 586                                       NICVF_CQ_BASE_ALIGN_BYTES, nic->node);
 587         if (rz == NULL) {
 588                 PMD_INIT_LOG(ERR, "Failed to allocate mem for cq hw ring");
 589                 return -ENOMEM;
 590         }
 591
 592         memset(rz->addr, 0, ring_size);
 593
 594         rxq->phys = rz->iova;
 595         rxq->desc = rz->addr;
 596         rxq->qlen_mask = desc_cnt - 1;
 597
 598         return 0;
 599 }
 600
 601 static int
 602 nicvf_qset_sq_alloc(struct rte_eth_dev *dev, struct nicvf *nic,
 603                     struct nicvf_txq *sq, uint16_t qidx, uint32_t desc_cnt)
 604 {
 605         const struct rte_memzone *rz;
 606         uint32_t ring_size = SND_QUEUE_SZ_MAX * sizeof(union sq_entry_t);
 607
 608         rz = rte_eth_dma_zone_reserve(dev, "sq",
 609                                       nicvf_netdev_qidx(nic, qidx), ring_size,
 610                                       NICVF_SQ_BASE_ALIGN_BYTES, nic->node);
 611         if (rz == NULL) {
 612                 PMD_INIT_LOG(ERR, "Failed allocate mem for sq hw ring");
 613                 return -ENOMEM;
 614         }
 615
 616         memset(rz->addr, 0, ring_size);
 617
 618         sq->phys = rz->iova;
 619         sq->desc = rz->addr;
 620         sq->qlen_mask = desc_cnt - 1;
 621
 622         return 0;
 623 }
 624
 625 static int
 626 nicvf_qset_rbdr_alloc(struct rte_eth_dev *dev, struct nicvf *nic,
 627                       uint32_t desc_cnt, uint32_t buffsz)
 628 {
 629         struct nicvf_rbdr *rbdr;
 630         const struct rte_memzone *rz;
 631         uint32_t ring_size;
 632
 633         assert(nic->rbdr == NULL);
 634         rbdr = rte_zmalloc_socket("rbdr", sizeof(struct nicvf_rbdr),
 635                                   RTE_CACHE_LINE_SIZE, nic->node);
 636         if (rbdr == NULL) {
 637                 PMD_INIT_LOG(ERR, "Failed to allocate mem for rbdr");
 638                 return -ENOMEM;
 639         }
 640
 641         ring_size = sizeof(struct rbdr_entry_t) * RBDR_QUEUE_SZ_MAX;
 642         rz = rte_eth_dma_zone_reserve(dev, "rbdr",
 643                                       nicvf_netdev_qidx(nic, 0), ring_size,
 644                                       NICVF_RBDR_BASE_ALIGN_BYTES, nic->node);
 645         if (rz == NULL) {
 646                 PMD_INIT_LOG(ERR, "Failed to allocate mem for rbdr desc ring");
 647                 return -ENOMEM;
 648         }
 649
 650         memset(rz->addr, 0, ring_size);
 651
 652         rbdr->phys = rz->iova;
 653         rbdr->tail = 0;
 654         rbdr->next_tail = 0;
 655         rbdr->desc = rz->addr;
 656         rbdr->buffsz = buffsz;
 657         rbdr->qlen_mask = desc_cnt - 1;
 658         rbdr->rbdr_status =
 659                 nicvf_qset_base(nic, 0) + NIC_QSET_RBDR_0_1_STATUS0;
 660         rbdr->rbdr_door =
 661                 nicvf_qset_base(nic, 0) + NIC_QSET_RBDR_0_1_DOOR;
 662
 663         nic->rbdr = rbdr;
 664         return 0;
 665 }
 666
 667 static void
 668 nicvf_rbdr_release_mbuf(struct rte_eth_dev *dev, struct nicvf *nic,
 669                         nicvf_iova_addr_t phy)
 670 {
 671         uint16_t qidx;
 672         void *obj;
 673         struct nicvf_rxq *rxq;
 674         uint16_t rx_start, rx_end;
 675
 676         /* Get queue ranges for this VF */
 677         nicvf_rx_range(dev, nic, &rx_start, &rx_end);
 678
 679         for (qidx = rx_start; qidx <= rx_end; qidx++) {
 680                 rxq = dev->data->rx_queues[qidx];
 681                 if (rxq->precharge_cnt) {
 682                         obj = (void *)nicvf_mbuff_phy2virt(phy,
 683                                                            rxq->mbuf_phys_off);
 684                         rte_mempool_put(rxq->pool, obj);
 685                         rxq->precharge_cnt--;
 686                         break;
 687                 }
 688         }
 689 }
 690
 691 static inline void
 692 nicvf_rbdr_release_mbufs(struct rte_eth_dev *dev, struct nicvf *nic)
 693 {
 694         uint32_t qlen_mask, head;
 695         struct rbdr_entry_t *entry;
 696         struct nicvf_rbdr *rbdr = nic->rbdr;
 697
 698         qlen_mask = rbdr->qlen_mask;
 699         head = rbdr->head;
 700         while (head != rbdr->tail) {
 701                 entry = rbdr->desc + head;
 702                 nicvf_rbdr_release_mbuf(dev, nic, entry->full_addr);
 703                 head++;
 704                 head = head & qlen_mask;
 705         }
 706 }
 707
 708 static inline void
 709 nicvf_tx_queue_release_mbufs(struct nicvf_txq *txq)
 710 {
 711         uint32_t head;
 712
 713         head = txq->head;
 714         while (head != txq->tail) {
 715                 if (txq->txbuffs[head]) {
 716                         rte_pktmbuf_free_seg(txq->txbuffs[head]);
 717                         txq->txbuffs[head] = NULL;
 718                 }
 719                 head++;
 720                 head = head & txq->qlen_mask;
 721         }
 722 }
 723
 724 static void
 725 nicvf_tx_queue_reset(struct nicvf_txq *txq)
 726 {
 727         uint32_t txq_desc_cnt = txq->qlen_mask + 1;
 728
 729         memset(txq->desc, 0, sizeof(union sq_entry_t) * txq_desc_cnt);
 730         memset(txq->txbuffs, 0, sizeof(struct rte_mbuf *) * txq_desc_cnt);
 731         txq->tail = 0;
 732         txq->head = 0;
 733         txq->xmit_bufs = 0;
 734 }
 735
 736 static inline int
 737 nicvf_vf_start_tx_queue(struct rte_eth_dev *dev, struct nicvf *nic,
 738                         uint16_t qidx)
 739 {
 740         struct nicvf_txq *txq;
 741         int ret;
 742
 743         assert(qidx < MAX_SND_QUEUES_PER_QS);
 744
 745         if (dev->data->tx_queue_state[nicvf_netdev_qidx(nic, qidx)] ==
 746                 RTE_ETH_QUEUE_STATE_STARTED)
 747                 return 0;
 748
 749         txq = dev->data->tx_queues[nicvf_netdev_qidx(nic, qidx)];
 750         txq->pool = NULL;
 751         ret = nicvf_qset_sq_config(nic, qidx, txq);
 752         if (ret) {
 753                 PMD_INIT_LOG(ERR, "Failed to configure sq VF%d %d %d",
 754                              nic->vf_id, qidx, ret);
 755                 goto config_sq_error;
 756         }
 757
 758         dev->data->tx_queue_state[nicvf_netdev_qidx(nic, qidx)] =
 759                 RTE_ETH_QUEUE_STATE_STARTED;
 760         return ret;
 761
 762 config_sq_error:
 763         nicvf_qset_sq_reclaim(nic, qidx);
 764         return ret;
 765 }
 766
 767 static inline int
 768 nicvf_vf_stop_tx_queue(struct rte_eth_dev *dev, struct nicvf *nic,
 769                        uint16_t qidx)
 770 {
 771         struct nicvf_txq *txq;
 772         int ret;
 773
 774         assert(qidx < MAX_SND_QUEUES_PER_QS);
 775
 776         if (dev->data->tx_queue_state[nicvf_netdev_qidx(nic, qidx)] ==
 777                 RTE_ETH_QUEUE_STATE_STOPPED)
 778                 return 0;
 779
 780         ret = nicvf_qset_sq_reclaim(nic, qidx);
 781         if (ret)
 782                 PMD_INIT_LOG(ERR, "Failed to reclaim sq VF%d %d %d",
 783                              nic->vf_id, qidx, ret);
 784
 785         txq = dev->data->tx_queues[nicvf_netdev_qidx(nic, qidx)];
 786         nicvf_tx_queue_release_mbufs(txq);
 787         nicvf_tx_queue_reset(txq);
 788
 789         dev->data->tx_queue_state[nicvf_netdev_qidx(nic, qidx)] =
 790                 RTE_ETH_QUEUE_STATE_STOPPED;
 791         return ret;
 792 }
 793
 794 static inline int
 795 nicvf_configure_cpi(struct rte_eth_dev *dev)
 796 {
 797         struct nicvf *nic = nicvf_pmd_priv(dev);
 798         uint16_t qidx, qcnt;
 799         int ret;
 800
 801         /* Count started rx queues */
 802         for (qidx = qcnt = 0; qidx < dev->data->nb_rx_queues; qidx++)
 803                 if (dev->data->rx_queue_state[qidx] ==
 804                     RTE_ETH_QUEUE_STATE_STARTED)
 805                         qcnt++;
 806
 807         nic->cpi_alg = CPI_ALG_NONE;
 808         ret = nicvf_mbox_config_cpi(nic, qcnt);
 809         if (ret)
 810                 PMD_INIT_LOG(ERR, "Failed to configure CPI %d", ret);
 811
 812         return ret;
 813 }
 814
 815 static inline int
 816 nicvf_configure_rss(struct rte_eth_dev *dev)
 817 {
 818         struct nicvf *nic = nicvf_pmd_priv(dev);
 819         uint64_t rsshf;
 820         int ret = -EINVAL;
 821
 822         rsshf = nicvf_rss_ethdev_to_nic(nic,
 823                         dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf);
 824         PMD_DRV_LOG(INFO, "mode=%d rx_queues=%d loopback=%d rsshf=0x%" PRIx64,
 825                     dev->data->dev_conf.rxmode.mq_mode,
 826                     dev->data->nb_rx_queues,
 827                     dev->data->dev_conf.lpbk_mode, rsshf);
 828
 829         if (dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_NONE)
 830                 ret = nicvf_rss_term(nic);
 831         else if (dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS)
 832                 ret = nicvf_rss_config(nic, dev->data->nb_rx_queues, rsshf);
 833         if (ret)
 834                 PMD_INIT_LOG(ERR, "Failed to configure RSS %d", ret);
 835
 836         return ret;
 837 }
 838
 839 static int
 840 nicvf_configure_rss_reta(struct rte_eth_dev *dev)
 841 {
 842         struct nicvf *nic = nicvf_pmd_priv(dev);
 843         unsigned int idx, qmap_size;
 844         uint8_t qmap[RTE_MAX_QUEUES_PER_PORT];
 845         uint8_t default_reta[NIC_MAX_RSS_IDR_TBL_SIZE];
 846
 847         if (nic->cpi_alg != CPI_ALG_NONE)
 848                 return -EINVAL;
 849
 850         /* Prepare queue map */
 851         for (idx = 0, qmap_size = 0; idx < dev->data->nb_rx_queues; idx++) {
 852                 if (dev->data->rx_queue_state[idx] ==
 853                                 RTE_ETH_QUEUE_STATE_STARTED)
 854                         qmap[qmap_size++] = idx;
 855         }
 856
 857         /* Update default RSS RETA */
 858         for (idx = 0; idx < NIC_MAX_RSS_IDR_TBL_SIZE; idx++)
 859                 default_reta[idx] = qmap[idx % qmap_size];
 860
 861         return nicvf_rss_reta_update(nic, default_reta,
 862                                      NIC_MAX_RSS_IDR_TBL_SIZE);
 863 }
 864
 865 static void
 866 nicvf_dev_tx_queue_release(void *sq)
 867 {
 868         struct nicvf_txq *txq;
 869
 870         PMD_INIT_FUNC_TRACE();
 871
 872         txq = (struct nicvf_txq *)sq;
 873         if (txq) {
 874                 if (txq->txbuffs != NULL) {
 875                         nicvf_tx_queue_release_mbufs(txq);
 876                         rte_free(txq->txbuffs);
 877                         txq->txbuffs = NULL;
 878                 }
 879                 rte_free(txq);
 880         }
 881 }
 882
 883 static void
 884 nicvf_set_tx_function(struct rte_eth_dev *dev)
 885 {
 886         struct nicvf_txq *txq;
 887         size_t i;
 888         bool multiseg = false;
 889
 890         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 891                 txq = dev->data->tx_queues[i];
 892                 if (txq->offloads & DEV_TX_OFFLOAD_MULTI_SEGS) {
 893                         multiseg = true;
 894                         break;
 895                 }
 896         }
 897
 898         /* Use a simple Tx queue (no offloads, no multi segs) if possible */
 899         if (multiseg) {
 900                 PMD_DRV_LOG(DEBUG, "Using multi-segment tx callback");
 901                 dev->tx_pkt_burst = nicvf_xmit_pkts_multiseg;
 902         } else {
 903                 PMD_DRV_LOG(DEBUG, "Using single-segment tx callback");
 904                 dev->tx_pkt_burst = nicvf_xmit_pkts;
 905         }
 906
 907         if (txq->pool_free == nicvf_single_pool_free_xmited_buffers)
 908                 PMD_DRV_LOG(DEBUG, "Using single-mempool tx free method");
 909         else
 910                 PMD_DRV_LOG(DEBUG, "Using multi-mempool tx free method");
 911 }
 912
 913 static void
 914 nicvf_set_rx_function(struct rte_eth_dev *dev)
 915 {
 916         if (dev->data->scattered_rx) {
 917                 PMD_DRV_LOG(DEBUG, "Using multi-segment rx callback");
 918                 dev->rx_pkt_burst = nicvf_recv_pkts_multiseg;
 919         } else {
 920                 PMD_DRV_LOG(DEBUG, "Using single-segment rx callback");
 921                 dev->rx_pkt_burst = nicvf_recv_pkts;
 922         }
 923 }
 924
 925 static int
 926 nicvf_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t qidx,
 927                          uint16_t nb_desc, unsigned int socket_id,
 928                          const struct rte_eth_txconf *tx_conf)
 929 {
 930         uint16_t tx_free_thresh;
 931         bool is_single_pool;
 932         struct nicvf_txq *txq;
 933         struct nicvf *nic = nicvf_pmd_priv(dev);
 934         uint64_t offloads;
 935
 936         PMD_INIT_FUNC_TRACE();
 937
 938         if (qidx >= MAX_SND_QUEUES_PER_QS)
 939                 nic = nic->snicvf[qidx / MAX_SND_QUEUES_PER_QS - 1];
 940
 941         qidx = qidx % MAX_SND_QUEUES_PER_QS;
 942
 943         /* Socket id check */
 944         if (socket_id != (unsigned int)SOCKET_ID_ANY && socket_id != nic->node)
 945                 PMD_DRV_LOG(WARNING, "socket_id expected %d, configured %d",
 946                 socket_id, nic->node);
 947
 948         /* Tx deferred start is not supported */
 949         if (tx_conf->tx_deferred_start) {
 950                 PMD_INIT_LOG(ERR, "Tx deferred start not supported");
 951                 return -EINVAL;
 952         }
 953
 954         /* Roundup nb_desc to available qsize and validate max number of desc */
 955         nb_desc = nicvf_qsize_sq_roundup(nb_desc);
 956         if (nb_desc == 0) {
 957                 PMD_INIT_LOG(ERR, "Value of nb_desc beyond available sq qsize");
 958                 return -EINVAL;
 959         }
 960
 961         /* Validate tx_free_thresh */
 962         tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ?
 963                                 tx_conf->tx_free_thresh :
 964                                 NICVF_DEFAULT_TX_FREE_THRESH);
 965
 966         if (tx_free_thresh > (nb_desc) ||
 967                 tx_free_thresh > NICVF_MAX_TX_FREE_THRESH) {
 968                 PMD_INIT_LOG(ERR,
 969                         "tx_free_thresh must be less than the number of TX "
 970                         "descriptors. (tx_free_thresh=%u port=%d "
 971                         "queue=%d)", (unsigned int)tx_free_thresh,
 972                         (int)dev->data->port_id, (int)qidx);
 973                 return -EINVAL;
 974         }
 975
 976         /* Free memory prior to re-allocation if needed. */
 977         if (dev->data->tx_queues[nicvf_netdev_qidx(nic, qidx)] != NULL) {
 978                 PMD_TX_LOG(DEBUG, "Freeing memory prior to re-allocation %d",
 979                                 nicvf_netdev_qidx(nic, qidx));
 980                 nicvf_dev_tx_queue_release(
 981                         dev->data->tx_queues[nicvf_netdev_qidx(nic, qidx)]);
 982                 dev->data->tx_queues[nicvf_netdev_qidx(nic, qidx)] = NULL;
 983         }
 984
 985         /* Allocating tx queue data structure */
 986         txq = rte_zmalloc_socket("ethdev TX queue", sizeof(struct nicvf_txq),
 987                                         RTE_CACHE_LINE_SIZE, nic->node);
 988         if (txq == NULL) {
 989                 PMD_INIT_LOG(ERR, "Failed to allocate txq=%d",
 990                              nicvf_netdev_qidx(nic, qidx));
 991                 return -ENOMEM;
 992         }
 993
 994         txq->nic = nic;
 995         txq->queue_id = qidx;
 996         txq->tx_free_thresh = tx_free_thresh;
 997         txq->sq_head = nicvf_qset_base(nic, qidx) + NIC_QSET_SQ_0_7_HEAD;
 998         txq->sq_door = nicvf_qset_base(nic, qidx) + NIC_QSET_SQ_0_7_DOOR;
 999         offloads = tx_conf->offloads | dev->data->dev_conf.txmode.offloads;
1000         txq->offloads = offloads;
1001
1002         is_single_pool = !!(offloads & DEV_TX_OFFLOAD_MBUF_FAST_FREE);
1003
1004         /* Choose optimum free threshold value for multipool case */
1005         if (!is_single_pool) {
1006                 txq->tx_free_thresh = (uint16_t)
1007                 (tx_conf->tx_free_thresh == NICVF_DEFAULT_TX_FREE_THRESH ?
1008                                 NICVF_TX_FREE_MPOOL_THRESH :
1009                                 tx_conf->tx_free_thresh);
1010                 txq->pool_free = nicvf_multi_pool_free_xmited_buffers;
1011         } else {
1012                 txq->pool_free = nicvf_single_pool_free_xmited_buffers;
1013         }
1014
1015         /* Allocate software ring */
1016         txq->txbuffs = rte_zmalloc_socket("txq->txbuffs",
1017                                 nb_desc * sizeof(struct rte_mbuf *),
1018                                 RTE_CACHE_LINE_SIZE, nic->node);
1019
1020         if (txq->txbuffs == NULL) {
1021                 nicvf_dev_tx_queue_release(txq);
1022                 return -ENOMEM;
1023         }
1024
1025         if (nicvf_qset_sq_alloc(dev, nic, txq, qidx, nb_desc)) {
1026                 PMD_INIT_LOG(ERR, "Failed to allocate mem for sq %d", qidx);
1027                 nicvf_dev_tx_queue_release(txq);
1028                 return -ENOMEM;
1029         }
1030
1031         nicvf_tx_queue_reset(txq);
1032
1033         PMD_INIT_LOG(DEBUG, "[%d] txq=%p nb_desc=%d desc=%p"
1034                         " phys=0x%" PRIx64 " offloads=0x%" PRIx64,
1035                         nicvf_netdev_qidx(nic, qidx), txq, nb_desc, txq->desc,
1036                         txq->phys, txq->offloads);
1037
1038         dev->data->tx_queues[nicvf_netdev_qidx(nic, qidx)] = txq;
1039         dev->data->tx_queue_state[nicvf_netdev_qidx(nic, qidx)] =
1040                 RTE_ETH_QUEUE_STATE_STOPPED;
1041         return 0;
1042 }
1043
1044 static inline void
1045 nicvf_rx_queue_release_mbufs(struct rte_eth_dev *dev, struct nicvf_rxq *rxq)
1046 {
1047         uint32_t rxq_cnt;
1048         uint32_t nb_pkts, released_pkts = 0;
1049         uint32_t refill_cnt = 0;
1050         struct rte_mbuf *rx_pkts[NICVF_MAX_RX_FREE_THRESH];
1051
1052         if (dev->rx_pkt_burst == NULL)
1053                 return;
1054
1055         while ((rxq_cnt = nicvf_dev_rx_queue_count(dev,
1056                                 nicvf_netdev_qidx(rxq->nic, rxq->queue_id)))) {
1057                 nb_pkts = dev->rx_pkt_burst(rxq, rx_pkts,
1058                                         NICVF_MAX_RX_FREE_THRESH);
1059                 PMD_DRV_LOG(INFO, "nb_pkts=%d  rxq_cnt=%d", nb_pkts, rxq_cnt);
1060                 while (nb_pkts) {
1061                         rte_pktmbuf_free_seg(rx_pkts[--nb_pkts]);
1062                         released_pkts++;
1063                 }
1064         }
1065
1066
1067         refill_cnt += nicvf_dev_rbdr_refill(dev,
1068                         nicvf_netdev_qidx(rxq->nic, rxq->queue_id));
1069
1070         PMD_DRV_LOG(INFO, "free_cnt=%d  refill_cnt=%d",
1071                     released_pkts, refill_cnt);
1072 }
1073
1074 static void
1075 nicvf_rx_queue_reset(struct nicvf_rxq *rxq)
1076 {
1077         rxq->head = 0;
1078         rxq->available_space = 0;
1079         rxq->recv_buffers = 0;
1080 }
1081
1082 static inline int
1083 nicvf_vf_start_rx_queue(struct rte_eth_dev *dev, struct nicvf *nic,
1084                         uint16_t qidx)
1085 {
1086         struct nicvf_rxq *rxq;
1087         int ret;
1088
1089         assert(qidx < MAX_RCV_QUEUES_PER_QS);
1090
1091         if (dev->data->rx_queue_state[nicvf_netdev_qidx(nic, qidx)] ==
1092                 RTE_ETH_QUEUE_STATE_STARTED)
1093                 return 0;
1094
1095         /* Update rbdr pointer to all rxq */
1096         rxq = dev->data->rx_queues[nicvf_netdev_qidx(nic, qidx)];
1097         rxq->shared_rbdr = nic->rbdr;
1098
1099         ret = nicvf_qset_rq_config(nic, qidx, rxq);
1100         if (ret) {
1101                 PMD_INIT_LOG(ERR, "Failed to configure rq VF%d %d %d",
1102                              nic->vf_id, qidx, ret);
1103                 goto config_rq_error;
1104         }
1105         ret = nicvf_qset_cq_config(nic, qidx, rxq);
1106         if (ret) {
1107                 PMD_INIT_LOG(ERR, "Failed to configure cq VF%d %d %d",
1108                              nic->vf_id, qidx, ret);
1109                 goto config_cq_error;
1110         }
1111
1112         dev->data->rx_queue_state[nicvf_netdev_qidx(nic, qidx)] =
1113                 RTE_ETH_QUEUE_STATE_STARTED;
1114         return 0;
1115
1116 config_cq_error:
1117         nicvf_qset_cq_reclaim(nic, qidx);
1118 config_rq_error:
1119         nicvf_qset_rq_reclaim(nic, qidx);
1120         return ret;
1121 }
1122
1123 static inline int
1124 nicvf_vf_stop_rx_queue(struct rte_eth_dev *dev, struct nicvf *nic,
1125                        uint16_t qidx)
1126 {
1127         struct nicvf_rxq *rxq;
1128         int ret, other_error;
1129
1130         if (dev->data->rx_queue_state[nicvf_netdev_qidx(nic, qidx)] ==
1131                 RTE_ETH_QUEUE_STATE_STOPPED)
1132                 return 0;
1133
1134         ret = nicvf_qset_rq_reclaim(nic, qidx);
1135         if (ret)
1136                 PMD_INIT_LOG(ERR, "Failed to reclaim rq VF%d %d %d",
1137                              nic->vf_id, qidx, ret);
1138
1139         other_error = ret;
1140         rxq = dev->data->rx_queues[nicvf_netdev_qidx(nic, qidx)];
1141         nicvf_rx_queue_release_mbufs(dev, rxq);
1142         nicvf_rx_queue_reset(rxq);
1143
1144         ret = nicvf_qset_cq_reclaim(nic, qidx);
1145         if (ret)
1146                 PMD_INIT_LOG(ERR, "Failed to reclaim cq VF%d %d %d",
1147                              nic->vf_id, qidx, ret);
1148
1149         other_error |= ret;
1150         dev->data->rx_queue_state[nicvf_netdev_qidx(nic, qidx)] =
1151                 RTE_ETH_QUEUE_STATE_STOPPED;
1152         return other_error;
1153 }
1154
1155 static void
1156 nicvf_dev_rx_queue_release(void *rx_queue)
1157 {
1158         PMD_INIT_FUNC_TRACE();
1159
1160         rte_free(rx_queue);
1161 }
1162
1163 static int
1164 nicvf_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t qidx)
1165 {
1166         struct nicvf *nic = nicvf_pmd_priv(dev);
1167         int ret;
1168
1169         if (qidx >= MAX_RCV_QUEUES_PER_QS)
1170                 nic = nic->snicvf[(qidx / MAX_RCV_QUEUES_PER_QS - 1)];
1171
1172         qidx = qidx % MAX_RCV_QUEUES_PER_QS;
1173
1174         ret = nicvf_vf_start_rx_queue(dev, nic, qidx);
1175         if (ret)
1176                 return ret;
1177
1178         ret = nicvf_configure_cpi(dev);
1179         if (ret)
1180                 return ret;
1181
1182         return nicvf_configure_rss_reta(dev);
1183 }
1184
1185 static int
1186 nicvf_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t qidx)
1187 {
1188         int ret;
1189         struct nicvf *nic = nicvf_pmd_priv(dev);
1190
1191         if (qidx >= MAX_SND_QUEUES_PER_QS)
1192                 nic = nic->snicvf[(qidx / MAX_SND_QUEUES_PER_QS - 1)];
1193
1194         qidx = qidx % MAX_RCV_QUEUES_PER_QS;
1195
1196         ret = nicvf_vf_stop_rx_queue(dev, nic, qidx);
1197         ret |= nicvf_configure_cpi(dev);
1198         ret |= nicvf_configure_rss_reta(dev);
1199         return ret;
1200 }
1201
1202 static int
1203 nicvf_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t qidx)
1204 {
1205         struct nicvf *nic = nicvf_pmd_priv(dev);
1206
1207         if (qidx >= MAX_SND_QUEUES_PER_QS)
1208                 nic = nic->snicvf[(qidx / MAX_SND_QUEUES_PER_QS - 1)];
1209
1210         qidx = qidx % MAX_SND_QUEUES_PER_QS;
1211
1212         return nicvf_vf_start_tx_queue(dev, nic, qidx);
1213 }
1214
1215 static int
1216 nicvf_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t qidx)
1217 {
1218         struct nicvf *nic = nicvf_pmd_priv(dev);
1219
1220         if (qidx >= MAX_SND_QUEUES_PER_QS)
1221                 nic = nic->snicvf[(qidx / MAX_SND_QUEUES_PER_QS - 1)];
1222
1223         qidx = qidx % MAX_SND_QUEUES_PER_QS;
1224
1225         return nicvf_vf_stop_tx_queue(dev, nic, qidx);
1226 }
1227
1228 static inline void
1229 nicvf_rxq_mbuf_setup(struct nicvf_rxq *rxq)
1230 {
1231         uintptr_t p;
1232         struct rte_mbuf mb_def;
1233
1234         RTE_BUILD_BUG_ON(sizeof(union mbuf_initializer) != 8);
1235         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, data_off) % 8 != 0);
1236         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, refcnt) -
1237                                 offsetof(struct rte_mbuf, data_off) != 2);
1238         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, nb_segs) -
1239                                 offsetof(struct rte_mbuf, data_off) != 4);
1240         RTE_BUILD_BUG_ON(offsetof(struct rte_mbuf, port) -
1241                                 offsetof(struct rte_mbuf, data_off) != 6);
1242         mb_def.nb_segs = 1;
1243         mb_def.data_off = RTE_PKTMBUF_HEADROOM;
1244         mb_def.port = rxq->port_id;
1245         rte_mbuf_refcnt_set(&mb_def, 1);
1246
1247         /* Prevent compiler reordering: rearm_data covers previous fields */
1248         rte_compiler_barrier();
1249         p = (uintptr_t)&mb_def.rearm_data;
1250         rxq->mbuf_initializer.value = *(uint64_t *)p;
1251 }
1252
1253 static int
1254 nicvf_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t qidx,
1255                          uint16_t nb_desc, unsigned int socket_id,
1256                          const struct rte_eth_rxconf *rx_conf,
1257                          struct rte_mempool *mp)
1258 {
1259         uint16_t rx_free_thresh;
1260         struct nicvf_rxq *rxq;
1261         struct nicvf *nic = nicvf_pmd_priv(dev);
1262         uint64_t offloads;
1263
1264         PMD_INIT_FUNC_TRACE();
1265
1266         if (qidx >= MAX_RCV_QUEUES_PER_QS)
1267                 nic = nic->snicvf[qidx / MAX_RCV_QUEUES_PER_QS - 1];
1268
1269         qidx = qidx % MAX_RCV_QUEUES_PER_QS;
1270
1271         /* Socket id check */
1272         if (socket_id != (unsigned int)SOCKET_ID_ANY && socket_id != nic->node)
1273                 PMD_DRV_LOG(WARNING, "socket_id expected %d, configured %d",
1274                 socket_id, nic->node);
1275
1276         /* Mempool memory must be contiguous, so must be one memory segment*/
1277         if (mp->nb_mem_chunks != 1) {
1278                 PMD_INIT_LOG(ERR, "Non-contiguous mempool, add more huge pages");
1279                 return -EINVAL;
1280         }
1281
1282         /* Mempool memory must be physically contiguous */
1283         if (mp->flags & MEMPOOL_F_NO_IOVA_CONTIG) {
1284                 PMD_INIT_LOG(ERR, "Mempool memory must be physically contiguous");
1285                 return -EINVAL;
1286         }
1287
1288         /* Rx deferred start is not supported */
1289         if (rx_conf->rx_deferred_start) {
1290                 PMD_INIT_LOG(ERR, "Rx deferred start not supported");
1291                 return -EINVAL;
1292         }
1293
1294         /* Roundup nb_desc to available qsize and validate max number of desc */
1295         nb_desc = nicvf_qsize_cq_roundup(nb_desc);
1296         if (nb_desc == 0) {
1297                 PMD_INIT_LOG(ERR, "Value nb_desc beyond available hw cq qsize");
1298                 return -EINVAL;
1299         }
1300
1301         /* Check rx_free_thresh upper bound */
1302         rx_free_thresh = (uint16_t)((rx_conf->rx_free_thresh) ?
1303                                 rx_conf->rx_free_thresh :
1304                                 NICVF_DEFAULT_RX_FREE_THRESH);
1305         if (rx_free_thresh > NICVF_MAX_RX_FREE_THRESH ||
1306                 rx_free_thresh >= nb_desc * .75) {
1307                 PMD_INIT_LOG(ERR, "rx_free_thresh greater than expected %d",
1308                                 rx_free_thresh);
1309                 return -EINVAL;
1310         }
1311
1312         /* Free memory prior to re-allocation if needed */
1313         if (dev->data->rx_queues[nicvf_netdev_qidx(nic, qidx)] != NULL) {
1314                 PMD_RX_LOG(DEBUG, "Freeing memory prior to re-allocation %d",
1315                                 nicvf_netdev_qidx(nic, qidx));
1316                 nicvf_dev_rx_queue_release(
1317                         dev->data->rx_queues[nicvf_netdev_qidx(nic, qidx)]);
1318                 dev->data->rx_queues[nicvf_netdev_qidx(nic, qidx)] = NULL;
1319         }
1320
1321         /* Allocate rxq memory */
1322         rxq = rte_zmalloc_socket("ethdev rx queue", sizeof(struct nicvf_rxq),
1323                                         RTE_CACHE_LINE_SIZE, nic->node);
1324         if (rxq == NULL) {
1325                 PMD_INIT_LOG(ERR, "Failed to allocate rxq=%d",
1326                              nicvf_netdev_qidx(nic, qidx));
1327                 return -ENOMEM;
1328         }
1329
1330         rxq->nic = nic;
1331         rxq->pool = mp;
1332         rxq->queue_id = qidx;
1333         rxq->port_id = dev->data->port_id;
1334         rxq->rx_free_thresh = rx_free_thresh;
1335         rxq->rx_drop_en = rx_conf->rx_drop_en;
1336         rxq->cq_status = nicvf_qset_base(nic, qidx) + NIC_QSET_CQ_0_7_STATUS;
1337         rxq->cq_door = nicvf_qset_base(nic, qidx) + NIC_QSET_CQ_0_7_DOOR;
1338         rxq->precharge_cnt = 0;
1339
1340         if (nicvf_hw_cap(nic) & NICVF_CAP_CQE_RX2)
1341                 rxq->rbptr_offset = NICVF_CQE_RX2_RBPTR_WORD;
1342         else
1343                 rxq->rbptr_offset = NICVF_CQE_RBPTR_WORD;
1344
1345         nicvf_rxq_mbuf_setup(rxq);
1346
1347         /* Alloc completion queue */
1348         if (nicvf_qset_cq_alloc(dev, nic, rxq, rxq->queue_id, nb_desc)) {
1349                 PMD_INIT_LOG(ERR, "failed to allocate cq %u", rxq->queue_id);
1350                 nicvf_dev_rx_queue_release(rxq);
1351                 return -ENOMEM;
1352         }
1353
1354         nicvf_rx_queue_reset(rxq);
1355
1356         offloads = rx_conf->offloads | dev->data->dev_conf.rxmode.offloads;
1357         PMD_INIT_LOG(DEBUG, "[%d] rxq=%p pool=%s nb_desc=(%d/%d)"
1358                         " phy=0x%" PRIx64 " offloads=0x%" PRIx64,
1359                         nicvf_netdev_qidx(nic, qidx), rxq, mp->name, nb_desc,
1360                         rte_mempool_avail_count(mp), rxq->phys, offloads);
1361
1362         dev->data->rx_queues[nicvf_netdev_qidx(nic, qidx)] = rxq;
1363         dev->data->rx_queue_state[nicvf_netdev_qidx(nic, qidx)] =
1364                 RTE_ETH_QUEUE_STATE_STOPPED;
1365         return 0;
1366 }
1367
1368 static void
1369 nicvf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
1370 {
1371         struct nicvf *nic = nicvf_pmd_priv(dev);
1372         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
1373
1374         PMD_INIT_FUNC_TRACE();
1375
1376         /* Autonegotiation may be disabled */
1377         dev_info->speed_capa = ETH_LINK_SPEED_FIXED;
1378         dev_info->speed_capa |= ETH_LINK_SPEED_10M | ETH_LINK_SPEED_100M |
1379                                  ETH_LINK_SPEED_1G | ETH_LINK_SPEED_10G;
1380         if (nicvf_hw_version(nic) != PCI_SUB_DEVICE_ID_CN81XX_NICVF)
1381                 dev_info->speed_capa |= ETH_LINK_SPEED_40G;
1382
1383         dev_info->min_rx_bufsize = ETHER_MIN_MTU;
1384         dev_info->max_rx_pktlen = NIC_HW_MAX_MTU + ETHER_HDR_LEN;
1385         dev_info->max_rx_queues =
1386                         (uint16_t)MAX_RCV_QUEUES_PER_QS * (MAX_SQS_PER_VF + 1);
1387         dev_info->max_tx_queues =
1388                         (uint16_t)MAX_SND_QUEUES_PER_QS * (MAX_SQS_PER_VF + 1);
1389         dev_info->max_mac_addrs = 1;
1390         dev_info->max_vfs = pci_dev->max_vfs;
1391
1392         dev_info->rx_offload_capa = NICVF_RX_OFFLOAD_CAPA;
1393         dev_info->tx_offload_capa = NICVF_TX_OFFLOAD_CAPA;
1394         dev_info->rx_queue_offload_capa = NICVF_RX_OFFLOAD_CAPA;
1395         dev_info->tx_queue_offload_capa = NICVF_TX_OFFLOAD_CAPA;
1396
1397         dev_info->reta_size = nic->rss_info.rss_size;
1398         dev_info->hash_key_size = RSS_HASH_KEY_BYTE_SIZE;
1399         dev_info->flow_type_rss_offloads = NICVF_RSS_OFFLOAD_PASS1;
1400         if (nicvf_hw_cap(nic) & NICVF_CAP_TUNNEL_PARSING)
1401                 dev_info->flow_type_rss_offloads |= NICVF_RSS_OFFLOAD_TUNNEL;
1402
1403         dev_info->default_rxconf = (struct rte_eth_rxconf) {
1404                 .rx_free_thresh = NICVF_DEFAULT_RX_FREE_THRESH,
1405                 .rx_drop_en = 0,
1406                 .offloads = DEV_RX_OFFLOAD_CRC_STRIP,
1407         };
1408
1409         dev_info->default_txconf = (struct rte_eth_txconf) {
1410                 .tx_free_thresh = NICVF_DEFAULT_TX_FREE_THRESH,
1411                 .offloads = DEV_TX_OFFLOAD_MBUF_FAST_FREE |
1412                         DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM   |
1413                         DEV_TX_OFFLOAD_UDP_CKSUM          |
1414                         DEV_TX_OFFLOAD_TCP_CKSUM,
1415         };
1416 }
1417
1418 static nicvf_iova_addr_t
1419 rbdr_rte_mempool_get(void *dev, void *opaque)
1420 {
1421         uint16_t qidx;
1422         uintptr_t mbuf;
1423         struct nicvf_rxq *rxq;
1424         struct rte_eth_dev *eth_dev = (struct rte_eth_dev *)dev;
1425         struct nicvf *nic = (struct nicvf *)opaque;
1426         uint16_t rx_start, rx_end;
1427
1428         /* Get queue ranges for this VF */
1429         nicvf_rx_range(eth_dev, nic, &rx_start, &rx_end);
1430
1431         for (qidx = rx_start; qidx <= rx_end; qidx++) {
1432                 rxq = eth_dev->data->rx_queues[qidx];
1433                 /* Maintain equal buffer count across all pools */
1434                 if (rxq->precharge_cnt >= rxq->qlen_mask)
1435                         continue;
1436                 rxq->precharge_cnt++;
1437                 mbuf = (uintptr_t)rte_pktmbuf_alloc(rxq->pool);
1438                 if (mbuf)
1439                         return nicvf_mbuff_virt2phy(mbuf, rxq->mbuf_phys_off);
1440         }
1441         return 0;
1442 }
1443
1444 static int
1445 nicvf_vf_start(struct rte_eth_dev *dev, struct nicvf *nic, uint32_t rbdrsz)
1446 {
1447         int ret;
1448         uint16_t qidx, data_off;
1449         uint32_t total_rxq_desc, nb_rbdr_desc, exp_buffs;
1450         uint64_t mbuf_phys_off = 0;
1451         struct nicvf_rxq *rxq;
1452         struct rte_mbuf *mbuf;
1453         uint16_t rx_start, rx_end;
1454         uint16_t tx_start, tx_end;
1455         bool vlan_strip;
1456
1457         PMD_INIT_FUNC_TRACE();
1458
1459         /* Userspace process exited without proper shutdown in last run */
1460         if (nicvf_qset_rbdr_active(nic, 0))
1461                 nicvf_vf_stop(dev, nic, false);
1462
1463         /* Get queue ranges for this VF */
1464         nicvf_rx_range(dev, nic, &rx_start, &rx_end);
1465
1466         /*
1467          * Thunderx nicvf PMD can support more than one pool per port only when
1468          * 1) Data payload size is same across all the pools in given port
1469          * AND
1470          * 2) All mbuffs in the pools are from the same hugepage
1471          * AND
1472          * 3) Mbuff metadata size is same across all the pools in given port
1473          *
1474          * This is to support existing application that uses multiple pool/port.
1475          * But, the purpose of using multipool for QoS will not be addressed.
1476          *
1477          */
1478
1479         /* Validate mempool attributes */
1480         for (qidx = rx_start; qidx <= rx_end; qidx++) {
1481                 rxq = dev->data->rx_queues[qidx];
1482                 rxq->mbuf_phys_off = nicvf_mempool_phy_offset(rxq->pool);
1483                 mbuf = rte_pktmbuf_alloc(rxq->pool);
1484                 if (mbuf == NULL) {
1485                         PMD_INIT_LOG(ERR, "Failed allocate mbuf VF%d qid=%d "
1486                                      "pool=%s",
1487                                      nic->vf_id, qidx, rxq->pool->name);
1488                         return -ENOMEM;
1489                 }
1490                 data_off = nicvf_mbuff_meta_length(mbuf);
1491                 data_off += RTE_PKTMBUF_HEADROOM;
1492                 rte_pktmbuf_free(mbuf);
1493
1494                 if (data_off % RTE_CACHE_LINE_SIZE) {
1495                         PMD_INIT_LOG(ERR, "%s: unaligned data_off=%d delta=%d",
1496                                 rxq->pool->name, data_off,
1497                                 data_off % RTE_CACHE_LINE_SIZE);
1498                         return -EINVAL;
1499                 }
1500                 rxq->mbuf_phys_off -= data_off;
1501
1502                 if (mbuf_phys_off == 0)
1503                         mbuf_phys_off = rxq->mbuf_phys_off;
1504                 if (mbuf_phys_off != rxq->mbuf_phys_off) {
1505                         PMD_INIT_LOG(ERR, "pool params not same,%s VF%d %"
1506                                      PRIx64, rxq->pool->name, nic->vf_id,
1507                                      mbuf_phys_off);
1508                         return -EINVAL;
1509                 }
1510         }
1511
1512         /* Check the level of buffers in the pool */
1513         total_rxq_desc = 0;
1514         for (qidx = rx_start; qidx <= rx_end; qidx++) {
1515                 rxq = dev->data->rx_queues[qidx];
1516                 /* Count total numbers of rxq descs */
1517                 total_rxq_desc += rxq->qlen_mask + 1;
1518                 exp_buffs = RTE_MEMPOOL_CACHE_MAX_SIZE + rxq->rx_free_thresh;
1519                 exp_buffs *= dev->data->nb_rx_queues;
1520                 if (rte_mempool_avail_count(rxq->pool) < exp_buffs) {
1521                         PMD_INIT_LOG(ERR, "Buff shortage in pool=%s (%d/%d)",
1522                                      rxq->pool->name,
1523                                      rte_mempool_avail_count(rxq->pool),
1524                                      exp_buffs);
1525                         return -ENOENT;
1526                 }
1527         }
1528
1529         /* Check RBDR desc overflow */
1530         ret = nicvf_qsize_rbdr_roundup(total_rxq_desc);
1531         if (ret == 0) {
1532                 PMD_INIT_LOG(ERR, "Reached RBDR desc limit, reduce nr desc "
1533                              "VF%d", nic->vf_id);
1534                 return -ENOMEM;
1535         }
1536
1537         /* Enable qset */
1538         ret = nicvf_qset_config(nic);
1539         if (ret) {
1540                 PMD_INIT_LOG(ERR, "Failed to enable qset %d VF%d", ret,
1541                              nic->vf_id);
1542                 return ret;
1543         }
1544
1545         /* Allocate RBDR and RBDR ring desc */
1546         nb_rbdr_desc = nicvf_qsize_rbdr_roundup(total_rxq_desc);
1547         ret = nicvf_qset_rbdr_alloc(dev, nic, nb_rbdr_desc, rbdrsz);
1548         if (ret) {
1549                 PMD_INIT_LOG(ERR, "Failed to allocate memory for rbdr alloc "
1550                              "VF%d", nic->vf_id);
1551                 goto qset_reclaim;
1552         }
1553
1554         /* Enable and configure RBDR registers */
1555         ret = nicvf_qset_rbdr_config(nic, 0);
1556         if (ret) {
1557                 PMD_INIT_LOG(ERR, "Failed to configure rbdr %d VF%d", ret,
1558                              nic->vf_id);
1559                 goto qset_rbdr_free;
1560         }
1561
1562         /* Fill rte_mempool buffers in RBDR pool and precharge it */
1563         ret = nicvf_qset_rbdr_precharge(dev, nic, 0, rbdr_rte_mempool_get,
1564                                         total_rxq_desc);
1565         if (ret) {
1566                 PMD_INIT_LOG(ERR, "Failed to fill rbdr %d VF%d", ret,
1567                              nic->vf_id);
1568                 goto qset_rbdr_reclaim;
1569         }
1570
1571         PMD_DRV_LOG(INFO, "Filled %d out of %d entries in RBDR VF%d",
1572                      nic->rbdr->tail, nb_rbdr_desc, nic->vf_id);
1573
1574         /* Configure VLAN Strip */
1575         vlan_strip = !!(dev->data->dev_conf.rxmode.offloads &
1576                         DEV_RX_OFFLOAD_VLAN_STRIP);
1577         nicvf_vlan_hw_strip(nic, vlan_strip);
1578
1579         /* Based on the packet type(IPv4 or IPv6), the nicvf HW aligns L3 data
1580          * to the 64bit memory address.
1581          * The alignment creates a hole in mbuf(between the end of headroom and
1582          * packet data start). The new revision of the HW provides an option to
1583          * disable the L3 alignment feature and make mbuf layout looks
1584          * more like other NICs. For better application compatibility, disabling
1585          * l3 alignment feature on the hardware revisions it supports
1586          */
1587         nicvf_apad_config(nic, false);
1588
1589         /* Get queue ranges for this VF */
1590         nicvf_tx_range(dev, nic, &tx_start, &tx_end);
1591
1592         /* Configure TX queues */
1593         for (qidx = tx_start; qidx <= tx_end; qidx++) {
1594                 ret = nicvf_vf_start_tx_queue(dev, nic,
1595                         qidx % MAX_SND_QUEUES_PER_QS);
1596                 if (ret)
1597                         goto start_txq_error;
1598         }
1599
1600         /* Configure RX queues */
1601         for (qidx = rx_start; qidx <= rx_end; qidx++) {
1602                 ret = nicvf_vf_start_rx_queue(dev, nic,
1603                         qidx % MAX_RCV_QUEUES_PER_QS);
1604                 if (ret)
1605                         goto start_rxq_error;
1606         }
1607
1608         if (!nic->sqs_mode) {
1609                 /* Configure CPI algorithm */
1610                 ret = nicvf_configure_cpi(dev);
1611                 if (ret)
1612                         goto start_txq_error;
1613
1614                 ret = nicvf_mbox_get_rss_size(nic);
1615                 if (ret) {
1616                         PMD_INIT_LOG(ERR, "Failed to get rss table size");
1617                         goto qset_rss_error;
1618                 }
1619
1620                 /* Configure RSS */
1621                 ret = nicvf_configure_rss(dev);
1622                 if (ret)
1623                         goto qset_rss_error;
1624         }
1625
1626         /* Done; Let PF make the BGX's RX and TX switches to ON position */
1627         nicvf_mbox_cfg_done(nic);
1628         return 0;
1629
1630 qset_rss_error:
1631         nicvf_rss_term(nic);
1632 start_rxq_error:
1633         for (qidx = rx_start; qidx <= rx_end; qidx++)
1634                 nicvf_vf_stop_rx_queue(dev, nic, qidx % MAX_RCV_QUEUES_PER_QS);
1635 start_txq_error:
1636         for (qidx = tx_start; qidx <= tx_end; qidx++)
1637                 nicvf_vf_stop_tx_queue(dev, nic, qidx % MAX_SND_QUEUES_PER_QS);
1638 qset_rbdr_reclaim:
1639         nicvf_qset_rbdr_reclaim(nic, 0);
1640         nicvf_rbdr_release_mbufs(dev, nic);
1641 qset_rbdr_free:
1642         if (nic->rbdr) {
1643                 rte_free(nic->rbdr);
1644                 nic->rbdr = NULL;
1645         }
1646 qset_reclaim:
1647         nicvf_qset_reclaim(nic);
1648         return ret;
1649 }
1650
1651 static int
1652 nicvf_dev_start(struct rte_eth_dev *dev)
1653 {
1654         uint16_t qidx;
1655         int ret;
1656         size_t i;
1657         struct nicvf *nic = nicvf_pmd_priv(dev);
1658         struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
1659         uint16_t mtu;
1660         uint32_t buffsz = 0, rbdrsz = 0;
1661         struct rte_pktmbuf_pool_private *mbp_priv;
1662         struct nicvf_rxq *rxq;
1663
1664         PMD_INIT_FUNC_TRACE();
1665
1666         /* This function must be called for a primary device */
1667         assert_primary(nic);
1668
1669         /* Validate RBDR buff size */
1670         for (qidx = 0; qidx < dev->data->nb_rx_queues; qidx++) {
1671                 rxq = dev->data->rx_queues[qidx];
1672                 mbp_priv = rte_mempool_get_priv(rxq->pool);
1673                 buffsz = mbp_priv->mbuf_data_room_size - RTE_PKTMBUF_HEADROOM;
1674                 if (buffsz % 128) {
1675                         PMD_INIT_LOG(ERR, "rxbuf size must be multiply of 128");
1676                         return -EINVAL;
1677                 }
1678                 if (rbdrsz == 0)
1679                         rbdrsz = buffsz;
1680                 if (rbdrsz != buffsz) {
1681                         PMD_INIT_LOG(ERR, "buffsz not same, qidx=%d (%d/%d)",
1682                                      qidx, rbdrsz, buffsz);
1683                         return -EINVAL;
1684                 }
1685         }
1686
1687         /* Configure loopback */
1688         ret = nicvf_loopback_config(nic, dev->data->dev_conf.lpbk_mode);
1689         if (ret) {
1690                 PMD_INIT_LOG(ERR, "Failed to configure loopback %d", ret);
1691                 return ret;
1692         }
1693
1694         /* Reset all statistics counters attached to this port */
1695         ret = nicvf_mbox_reset_stat_counters(nic, 0x3FFF, 0x1F, 0xFFFF, 0xFFFF);
1696         if (ret) {
1697                 PMD_INIT_LOG(ERR, "Failed to reset stat counters %d", ret);
1698                 return ret;
1699         }
1700
1701         /* Setup scatter mode if needed by jumbo */
1702         if (dev->data->dev_conf.rxmode.max_rx_pkt_len +
1703                                             2 * VLAN_TAG_SIZE > buffsz)
1704                 dev->data->scattered_rx = 1;
1705         if ((rx_conf->offloads & DEV_RX_OFFLOAD_SCATTER) != 0)
1706                 dev->data->scattered_rx = 1;
1707
1708         /* Setup MTU based on max_rx_pkt_len or default */
1709         mtu = dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME ?
1710                 dev->data->dev_conf.rxmode.max_rx_pkt_len
1711                         -  ETHER_HDR_LEN : ETHER_MTU;
1712
1713         if (nicvf_dev_set_mtu(dev, mtu)) {
1714                 PMD_INIT_LOG(ERR, "Failed to set default mtu size");
1715                 return -EBUSY;
1716         }
1717
1718         ret = nicvf_vf_start(dev, nic, rbdrsz);
1719         if (ret != 0)
1720                 return ret;
1721
1722         for (i = 0; i < nic->sqs_count; i++) {
1723                 assert(nic->snicvf[i]);
1724
1725                 ret = nicvf_vf_start(dev, nic->snicvf[i], rbdrsz);
1726                 if (ret != 0)
1727                         return ret;
1728         }
1729
1730         /* Configure callbacks based on scatter mode */
1731         nicvf_set_tx_function(dev);
1732         nicvf_set_rx_function(dev);
1733
1734         return 0;
1735 }
1736
1737 static void
1738 nicvf_dev_stop_cleanup(struct rte_eth_dev *dev, bool cleanup)
1739 {
1740         size_t i;
1741         int ret;
1742         struct nicvf *nic = nicvf_pmd_priv(dev);
1743
1744         PMD_INIT_FUNC_TRACE();
1745
1746         /* Teardown secondary vf first */
1747         for (i = 0; i < nic->sqs_count; i++) {
1748                 if (!nic->snicvf[i])
1749                         continue;
1750
1751                 nicvf_vf_stop(dev, nic->snicvf[i], cleanup);
1752         }
1753
1754         /* Stop the primary VF now */
1755         nicvf_vf_stop(dev, nic, cleanup);
1756
1757         /* Disable loopback */
1758         ret = nicvf_loopback_config(nic, 0);
1759         if (ret)
1760                 PMD_INIT_LOG(ERR, "Failed to disable loopback %d", ret);
1761
1762         /* Reclaim CPI configuration */
1763         ret = nicvf_mbox_config_cpi(nic, 0);
1764         if (ret)
1765                 PMD_INIT_LOG(ERR, "Failed to reclaim CPI config %d", ret);
1766 }
1767
1768 static void
1769 nicvf_dev_stop(struct rte_eth_dev *dev)
1770 {
1771         PMD_INIT_FUNC_TRACE();
1772
1773         nicvf_dev_stop_cleanup(dev, false);
1774 }
1775
1776 static void
1777 nicvf_vf_stop(struct rte_eth_dev *dev, struct nicvf *nic, bool cleanup)
1778 {
1779         int ret;
1780         uint16_t qidx;
1781         uint16_t tx_start, tx_end;
1782         uint16_t rx_start, rx_end;
1783
1784         PMD_INIT_FUNC_TRACE();
1785
1786         if (cleanup) {
1787                 /* Let PF make the BGX's RX and TX switches to OFF position */
1788                 nicvf_mbox_shutdown(nic);
1789         }
1790
1791         /* Disable VLAN Strip */
1792         nicvf_vlan_hw_strip(nic, 0);
1793
1794         /* Get queue ranges for this VF */
1795         nicvf_tx_range(dev, nic, &tx_start, &tx_end);
1796
1797         for (qidx = tx_start; qidx <= tx_end; qidx++)
1798                 nicvf_vf_stop_tx_queue(dev, nic, qidx % MAX_SND_QUEUES_PER_QS);
1799
1800         /* Get queue ranges for this VF */
1801         nicvf_rx_range(dev, nic, &rx_start, &rx_end);
1802
1803         /* Reclaim rq */
1804         for (qidx = rx_start; qidx <= rx_end; qidx++)
1805                 nicvf_vf_stop_rx_queue(dev, nic, qidx % MAX_RCV_QUEUES_PER_QS);
1806
1807         /* Reclaim RBDR */
1808         ret = nicvf_qset_rbdr_reclaim(nic, 0);
1809         if (ret)
1810                 PMD_INIT_LOG(ERR, "Failed to reclaim RBDR %d", ret);
1811
1812         /* Move all charged buffers in RBDR back to pool */
1813         if (nic->rbdr != NULL)
1814                 nicvf_rbdr_release_mbufs(dev, nic);
1815
1816         /* Disable qset */
1817         ret = nicvf_qset_reclaim(nic);
1818         if (ret)
1819                 PMD_INIT_LOG(ERR, "Failed to disable qset %d", ret);
1820
1821         /* Disable all interrupts */
1822         nicvf_disable_all_interrupts(nic);
1823
1824         /* Free RBDR SW structure */
1825         if (nic->rbdr) {
1826                 rte_free(nic->rbdr);
1827                 nic->rbdr = NULL;
1828         }
1829 }
1830
1831 static void
1832 nicvf_dev_close(struct rte_eth_dev *dev)
1833 {
1834         size_t i;
1835         struct nicvf *nic = nicvf_pmd_priv(dev);
1836
1837         PMD_INIT_FUNC_TRACE();
1838
1839         nicvf_dev_stop_cleanup(dev, true);
1840         nicvf_periodic_alarm_stop(nicvf_interrupt, dev);
1841
1842         for (i = 0; i < nic->sqs_count; i++) {
1843                 if (!nic->snicvf[i])
1844                         continue;
1845
1846                 nicvf_periodic_alarm_stop(nicvf_vf_interrupt, nic->snicvf[i]);
1847         }
1848 }
1849
1850 static int
1851 nicvf_request_sqs(struct nicvf *nic)
1852 {
1853         size_t i;
1854
1855         assert_primary(nic);
1856         assert(nic->sqs_count > 0);
1857         assert(nic->sqs_count <= MAX_SQS_PER_VF);
1858
1859         /* Set no of Rx/Tx queues in each of the SQsets */
1860         for (i = 0; i < nic->sqs_count; i++) {
1861                 if (nicvf_svf_empty())
1862                         rte_panic("Cannot assign sufficient number of "
1863                                   "secondary queues to primary VF%" PRIu8 "\n",
1864                                   nic->vf_id);
1865
1866                 nic->snicvf[i] = nicvf_svf_pop();
1867                 nic->snicvf[i]->sqs_id = i;
1868         }
1869
1870         return nicvf_mbox_request_sqs(nic);
1871 }
1872
1873 static int
1874 nicvf_dev_configure(struct rte_eth_dev *dev)
1875 {
1876         struct rte_eth_dev_data *data = dev->data;
1877         struct rte_eth_conf *conf = &data->dev_conf;
1878         struct rte_eth_rxmode *rxmode = &conf->rxmode;
1879         struct rte_eth_txmode *txmode = &conf->txmode;
1880         struct nicvf *nic = nicvf_pmd_priv(dev);
1881         uint8_t cqcount;
1882
1883         PMD_INIT_FUNC_TRACE();
1884
1885         if (!rte_eal_has_hugepages()) {
1886                 PMD_INIT_LOG(INFO, "Huge page is not configured");
1887                 return -EINVAL;
1888         }
1889
1890         if ((rxmode->offloads & DEV_RX_OFFLOAD_CRC_STRIP) == 0) {
1891                 PMD_INIT_LOG(NOTICE, "Can't disable hw crc strip");
1892                 rxmode->offloads |= DEV_RX_OFFLOAD_CRC_STRIP;
1893         }
1894
1895         if (txmode->mq_mode) {
1896                 PMD_INIT_LOG(INFO, "Tx mq_mode DCB or VMDq not supported");
1897                 return -EINVAL;
1898         }
1899
1900         if (rxmode->mq_mode != ETH_MQ_RX_NONE &&
1901                 rxmode->mq_mode != ETH_MQ_RX_RSS) {
1902                 PMD_INIT_LOG(INFO, "Unsupported rx qmode %d", rxmode->mq_mode);
1903                 return -EINVAL;
1904         }
1905
1906         if (rxmode->split_hdr_size) {
1907                 PMD_INIT_LOG(INFO, "Rxmode does not support split header");
1908                 return -EINVAL;
1909         }
1910
1911         if (conf->link_speeds & ETH_LINK_SPEED_FIXED) {
1912                 PMD_INIT_LOG(INFO, "Setting link speed/duplex not supported");
1913                 return -EINVAL;
1914         }
1915
1916         if (conf->dcb_capability_en) {
1917                 PMD_INIT_LOG(INFO, "DCB enable not supported");
1918                 return -EINVAL;
1919         }
1920
1921         if (conf->fdir_conf.mode != RTE_FDIR_MODE_NONE) {
1922                 PMD_INIT_LOG(INFO, "Flow director not supported");
1923                 return -EINVAL;
1924         }
1925
1926         assert_primary(nic);
1927         NICVF_STATIC_ASSERT(MAX_RCV_QUEUES_PER_QS == MAX_SND_QUEUES_PER_QS);
1928         cqcount = RTE_MAX(data->nb_tx_queues, data->nb_rx_queues);
1929         if (cqcount > MAX_RCV_QUEUES_PER_QS) {
1930                 nic->sqs_count = RTE_ALIGN_CEIL(cqcount, MAX_RCV_QUEUES_PER_QS);
1931                 nic->sqs_count = (nic->sqs_count / MAX_RCV_QUEUES_PER_QS) - 1;
1932         } else {
1933                 nic->sqs_count = 0;
1934         }
1935
1936         assert(nic->sqs_count <= MAX_SQS_PER_VF);
1937
1938         if (nic->sqs_count > 0) {
1939                 if (nicvf_request_sqs(nic)) {
1940                         rte_panic("Cannot assign sufficient number of "
1941                                   "secondary queues to PORT%d VF%" PRIu8 "\n",
1942                                   dev->data->port_id, nic->vf_id);
1943                 }
1944         }
1945
1946         PMD_INIT_LOG(DEBUG, "Configured ethdev port%d hwcap=0x%" PRIx64,
1947                 dev->data->port_id, nicvf_hw_cap(nic));
1948
1949         return 0;
1950 }
1951
1952 /* Initialize and register driver with DPDK Application */
1953 static const struct eth_dev_ops nicvf_eth_dev_ops = {
1954         .dev_configure            = nicvf_dev_configure,
1955         .dev_start                = nicvf_dev_start,
1956         .dev_stop                 = nicvf_dev_stop,
1957         .link_update              = nicvf_dev_link_update,
1958         .dev_close                = nicvf_dev_close,
1959         .stats_get                = nicvf_dev_stats_get,
1960         .stats_reset              = nicvf_dev_stats_reset,
1961         .promiscuous_enable       = nicvf_dev_promisc_enable,
1962         .dev_infos_get            = nicvf_dev_info_get,
1963         .dev_supported_ptypes_get = nicvf_dev_supported_ptypes_get,
1964         .mtu_set                  = nicvf_dev_set_mtu,
1965         .reta_update              = nicvf_dev_reta_update,
1966         .reta_query               = nicvf_dev_reta_query,
1967         .rss_hash_update          = nicvf_dev_rss_hash_update,
1968         .rss_hash_conf_get        = nicvf_dev_rss_hash_conf_get,
1969         .rx_queue_start           = nicvf_dev_rx_queue_start,
1970         .rx_queue_stop            = nicvf_dev_rx_queue_stop,
1971         .tx_queue_start           = nicvf_dev_tx_queue_start,
1972         .tx_queue_stop            = nicvf_dev_tx_queue_stop,
1973         .rx_queue_setup           = nicvf_dev_rx_queue_setup,
1974         .rx_queue_release         = nicvf_dev_rx_queue_release,
1975         .rx_queue_count           = nicvf_dev_rx_queue_count,
1976         .tx_queue_setup           = nicvf_dev_tx_queue_setup,
1977         .tx_queue_release         = nicvf_dev_tx_queue_release,
1978         .get_reg                  = nicvf_dev_get_regs,
1979 };
1980
1981 static int
1982 nicvf_eth_dev_init(struct rte_eth_dev *eth_dev)
1983 {
1984         int ret;
1985         struct rte_pci_device *pci_dev;
1986         struct nicvf *nic = nicvf_pmd_priv(eth_dev);
1987
1988         PMD_INIT_FUNC_TRACE();
1989
1990         eth_dev->dev_ops = &nicvf_eth_dev_ops;
1991
1992         /* For secondary processes, the primary has done all the work */
1993         if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
1994                 if (nic) {
1995                         /* Setup callbacks for secondary process */
1996                         nicvf_set_tx_function(eth_dev);
1997                         nicvf_set_rx_function(eth_dev);
1998                         return 0;
1999                 } else {
2000                         /* If nic == NULL than it is secondary function
2001                          * so ethdev need to be released by caller */
2002                         return ENOTSUP;
2003                 }
2004         }
2005
2006         pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
2007         rte_eth_copy_pci_info(eth_dev, pci_dev);
2008
2009         nic->device_id = pci_dev->id.device_id;
2010         nic->vendor_id = pci_dev->id.vendor_id;
2011         nic->subsystem_device_id = pci_dev->id.subsystem_device_id;
2012         nic->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id;
2013
2014         PMD_INIT_LOG(DEBUG, "nicvf: device (%x:%x) %u:%u:%u:%u",
2015                         pci_dev->id.vendor_id, pci_dev->id.device_id,
2016                         pci_dev->addr.domain, pci_dev->addr.bus,
2017                         pci_dev->addr.devid, pci_dev->addr.function);
2018
2019         nic->reg_base = (uintptr_t)pci_dev->mem_resource[0].addr;
2020         if (!nic->reg_base) {
2021                 PMD_INIT_LOG(ERR, "Failed to map BAR0");
2022                 ret = -ENODEV;
2023                 goto fail;
2024         }
2025
2026         nicvf_disable_all_interrupts(nic);
2027
2028         ret = nicvf_periodic_alarm_start(nicvf_interrupt, eth_dev);
2029         if (ret) {
2030                 PMD_INIT_LOG(ERR, "Failed to start period alarm");
2031                 goto fail;
2032         }
2033
2034         ret = nicvf_mbox_check_pf_ready(nic);
2035         if (ret) {
2036                 PMD_INIT_LOG(ERR, "Failed to get ready message from PF");
2037                 goto alarm_fail;
2038         } else {
2039                 PMD_INIT_LOG(INFO,
2040                         "node=%d vf=%d mode=%s sqs=%s loopback_supported=%s",
2041                         nic->node, nic->vf_id,
2042                         nic->tns_mode == NIC_TNS_MODE ? "tns" : "tns-bypass",
2043                         nic->sqs_mode ? "true" : "false",
2044                         nic->loopback_supported ? "true" : "false"
2045                         );
2046         }
2047
2048         ret = nicvf_base_init(nic);
2049         if (ret) {
2050                 PMD_INIT_LOG(ERR, "Failed to execute nicvf_base_init");
2051                 goto malloc_fail;
2052         }
2053
2054         if (nic->sqs_mode) {
2055                 /* Push nic to stack of secondary vfs */
2056                 nicvf_svf_push(nic);
2057
2058                 /* Steal nic pointer from the device for further reuse */
2059                 eth_dev->data->dev_private = NULL;
2060
2061                 nicvf_periodic_alarm_stop(nicvf_interrupt, eth_dev);
2062                 ret = nicvf_periodic_alarm_start(nicvf_vf_interrupt, nic);
2063                 if (ret) {
2064                         PMD_INIT_LOG(ERR, "Failed to start period alarm");
2065                         goto fail;
2066                 }
2067
2068                 /* Detach port by returning positive error number */
2069                 return ENOTSUP;
2070         }
2071
2072         eth_dev->data->mac_addrs = rte_zmalloc("mac_addr", ETHER_ADDR_LEN, 0);
2073         if (eth_dev->data->mac_addrs == NULL) {
2074                 PMD_INIT_LOG(ERR, "Failed to allocate memory for mac addr");
2075                 ret = -ENOMEM;
2076                 goto alarm_fail;
2077         }
2078         if (is_zero_ether_addr((struct ether_addr *)nic->mac_addr))
2079                 eth_random_addr(&nic->mac_addr[0]);
2080
2081         ether_addr_copy((struct ether_addr *)nic->mac_addr,
2082                         &eth_dev->data->mac_addrs[0]);
2083
2084         ret = nicvf_mbox_set_mac_addr(nic, nic->mac_addr);
2085         if (ret) {
2086                 PMD_INIT_LOG(ERR, "Failed to set mac addr");
2087                 goto malloc_fail;
2088         }
2089
2090         PMD_INIT_LOG(INFO, "Port %d (%x:%x) mac=%02x:%02x:%02x:%02x:%02x:%02x",
2091                 eth_dev->data->port_id, nic->vendor_id, nic->device_id,
2092                 nic->mac_addr[0], nic->mac_addr[1], nic->mac_addr[2],
2093                 nic->mac_addr[3], nic->mac_addr[4], nic->mac_addr[5]);
2094
2095         return 0;
2096
2097 malloc_fail:
2098         rte_free(eth_dev->data->mac_addrs);
2099 alarm_fail:
2100         nicvf_periodic_alarm_stop(nicvf_interrupt, eth_dev);
2101 fail:
2102         return ret;
2103 }
2104
2105 static const struct rte_pci_id pci_id_nicvf_map[] = {
2106         {
2107                 .class_id = RTE_CLASS_ANY_ID,
2108                 .vendor_id = PCI_VENDOR_ID_CAVIUM,
2109                 .device_id = PCI_DEVICE_ID_THUNDERX_CN88XX_PASS1_NICVF,
2110                 .subsystem_vendor_id = PCI_VENDOR_ID_CAVIUM,
2111                 .subsystem_device_id = PCI_SUB_DEVICE_ID_CN88XX_PASS1_NICVF,
2112         },
2113         {
2114                 .class_id = RTE_CLASS_ANY_ID,
2115                 .vendor_id = PCI_VENDOR_ID_CAVIUM,
2116                 .device_id = PCI_DEVICE_ID_THUNDERX_NICVF,
2117                 .subsystem_vendor_id = PCI_VENDOR_ID_CAVIUM,
2118                 .subsystem_device_id = PCI_SUB_DEVICE_ID_CN88XX_PASS2_NICVF,
2119         },
2120         {
2121                 .class_id = RTE_CLASS_ANY_ID,
2122                 .vendor_id = PCI_VENDOR_ID_CAVIUM,
2123                 .device_id = PCI_DEVICE_ID_THUNDERX_NICVF,
2124                 .subsystem_vendor_id = PCI_VENDOR_ID_CAVIUM,
2125                 .subsystem_device_id = PCI_SUB_DEVICE_ID_CN81XX_NICVF,
2126         },
2127         {
2128                 .class_id = RTE_CLASS_ANY_ID,
2129                 .vendor_id = PCI_VENDOR_ID_CAVIUM,
2130                 .device_id = PCI_DEVICE_ID_THUNDERX_NICVF,
2131                 .subsystem_vendor_id = PCI_VENDOR_ID_CAVIUM,
2132                 .subsystem_device_id = PCI_SUB_DEVICE_ID_CN83XX_NICVF,
2133         },
2134         {
2135                 .vendor_id = 0,
2136         },
2137 };
2138
2139 static int nicvf_eth_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
2140         struct rte_pci_device *pci_dev)
2141 {
2142         return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct nicvf),
2143                 nicvf_eth_dev_init);
2144 }
2145
2146 static int nicvf_eth_pci_remove(struct rte_pci_device *pci_dev)
2147 {
2148         return rte_eth_dev_pci_generic_remove(pci_dev, NULL);
2149 }
2150
2151 static struct rte_pci_driver rte_nicvf_pmd = {
2152         .id_table = pci_id_nicvf_map,
2153         .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_KEEP_MAPPED_RES |
2154                         RTE_PCI_DRV_INTR_LSC,
2155         .probe = nicvf_eth_pci_probe,
2156         .remove = nicvf_eth_pci_remove,
2157 };
2158
2159 RTE_PMD_REGISTER_PCI(net_thunderx, rte_nicvf_pmd);
2160 RTE_PMD_REGISTER_PCI_TABLE(net_thunderx, pci_id_nicvf_map);
2161 RTE_PMD_REGISTER_KMOD_DEP(net_thunderx, "* igb_uio | uio_pci_generic | vfio-pci");