drivers/net/thunderx/nicvf_ethdev.c

   1 /*
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (C) Cavium networks Ltd. 2016.
   5  *
   6  *   Redistribution and use in source and binary forms, with or without
   7  *   modification, are permitted provided that the following conditions
   8  *   are met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above copyright
  13  *       notice, this list of conditions and the following disclaimer in
  14  *       the documentation and/or other materials provided with the
  15  *       distribution.
  16  *     * Neither the name of Cavium networks nor the names of its
  17  *       contributors may be used to endorse or promote products derived
  18  *       from this software without specific prior written permission.
  19  *
  20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <assert.h>
  34 #include <stdio.h>
  35 #include <stdbool.h>
  36 #include <errno.h>
  37 #include <stdint.h>
  38 #include <string.h>
  39 #include <unistd.h>
  40 #include <stdarg.h>
  41 #include <inttypes.h>
  42 #include <netinet/in.h>
  43 #include <sys/queue.h>
  44 #include <sys/timerfd.h>
  45
  46 #include <rte_alarm.h>
  47 #include <rte_atomic.h>
  48 #include <rte_branch_prediction.h>
  49 #include <rte_byteorder.h>
  50 #include <rte_common.h>
  51 #include <rte_cycles.h>
  52 #include <rte_debug.h>
  53 #include <rte_dev.h>
  54 #include <rte_eal.h>
  55 #include <rte_ether.h>
  56 #include <rte_ethdev.h>
  57 #include <rte_interrupts.h>
  58 #include <rte_log.h>
  59 #include <rte_memory.h>
  60 #include <rte_memzone.h>
  61 #include <rte_malloc.h>
  62 #include <rte_random.h>
  63 #include <rte_pci.h>
  64 #include <rte_tailq.h>
  65
  66 #include "base/nicvf_plat.h"
  67
  68 #include "nicvf_ethdev.h"
  69
  70 #include "nicvf_logs.h"
  71
  72 static inline int
  73 nicvf_atomic_write_link_status(struct rte_eth_dev *dev,
  74                                struct rte_eth_link *link)
  75 {
  76         struct rte_eth_link *dst = &dev->data->dev_link;
  77         struct rte_eth_link *src = link;
  78
  79         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
  80                 *(uint64_t *)src) == 0)
  81                 return -1;
  82
  83         return 0;
  84 }
  85
  86 static inline void
  87 nicvf_set_eth_link_status(struct nicvf *nic, struct rte_eth_link *link)
  88 {
  89         link->link_status = nic->link_up;
  90         link->link_duplex = ETH_LINK_AUTONEG;
  91         if (nic->duplex == NICVF_HALF_DUPLEX)
  92                 link->link_duplex = ETH_LINK_HALF_DUPLEX;
  93         else if (nic->duplex == NICVF_FULL_DUPLEX)
  94                 link->link_duplex = ETH_LINK_FULL_DUPLEX;
  95         link->link_speed = nic->speed;
  96         link->link_autoneg = ETH_LINK_SPEED_AUTONEG;
  97 }
  98
  99 static void
 100 nicvf_interrupt(void *arg)
 101 {
 102         struct nicvf *nic = arg;
 103
 104         if (nicvf_reg_poll_interrupts(nic) == NIC_MBOX_MSG_BGX_LINK_CHANGE) {
 105                 if (nic->eth_dev->data->dev_conf.intr_conf.lsc)
 106                         nicvf_set_eth_link_status(nic,
 107                                         &nic->eth_dev->data->dev_link);
 108                 _rte_eth_dev_callback_process(nic->eth_dev,
 109                                 RTE_ETH_EVENT_INTR_LSC);
 110         }
 111
 112         rte_eal_alarm_set(NICVF_INTR_POLL_INTERVAL_MS * 1000,
 113                                 nicvf_interrupt, nic);
 114 }
 115
 116 static int
 117 nicvf_periodic_alarm_start(struct nicvf *nic)
 118 {
 119         return rte_eal_alarm_set(NICVF_INTR_POLL_INTERVAL_MS * 1000,
 120                                         nicvf_interrupt, nic);
 121 }
 122
 123 static int
 124 nicvf_periodic_alarm_stop(struct nicvf *nic)
 125 {
 126         return rte_eal_alarm_cancel(nicvf_interrupt, nic);
 127 }
 128
 129 /*
 130  * Return 0 means link status changed, -1 means not changed
 131  */
 132 static int
 133 nicvf_dev_link_update(struct rte_eth_dev *dev,
 134                       int wait_to_complete __rte_unused)
 135 {
 136         struct rte_eth_link link;
 137         struct nicvf *nic = nicvf_pmd_priv(dev);
 138
 139         PMD_INIT_FUNC_TRACE();
 140
 141         memset(&link, 0, sizeof(link));
 142         nicvf_set_eth_link_status(nic, &link);
 143         return nicvf_atomic_write_link_status(dev, &link);
 144 }
 145
 146 static int
 147 nicvf_dev_get_reg_length(struct rte_eth_dev *dev  __rte_unused)
 148 {
 149         return nicvf_reg_get_count();
 150 }
 151
 152 static int
 153 nicvf_dev_get_regs(struct rte_eth_dev *dev, struct rte_dev_reg_info *regs)
 154 {
 155         uint64_t *data = regs->data;
 156         struct nicvf *nic = nicvf_pmd_priv(dev);
 157
 158         if (data == NULL)
 159                 return -EINVAL;
 160
 161         /* Support only full register dump */
 162         if ((regs->length == 0) ||
 163                 (regs->length == (uint32_t)nicvf_reg_get_count())) {
 164                 regs->version = nic->vendor_id << 16 | nic->device_id;
 165                 nicvf_reg_dump(nic, data);
 166                 return 0;
 167         }
 168         return -ENOTSUP;
 169 }
 170
 171 static void
 172 nicvf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 173 {
 174         struct nicvf *nic = nicvf_pmd_priv(dev);
 175
 176         PMD_INIT_FUNC_TRACE();
 177
 178         dev_info->min_rx_bufsize = ETHER_MIN_MTU;
 179         dev_info->max_rx_pktlen = NIC_HW_MAX_FRS;
 180         dev_info->max_rx_queues = (uint16_t)MAX_RCV_QUEUES_PER_QS;
 181         dev_info->max_tx_queues = (uint16_t)MAX_SND_QUEUES_PER_QS;
 182         dev_info->max_mac_addrs = 1;
 183         dev_info->max_vfs = dev->pci_dev->max_vfs;
 184
 185         dev_info->rx_offload_capa = DEV_RX_OFFLOAD_VLAN_STRIP;
 186         dev_info->tx_offload_capa =
 187                 DEV_TX_OFFLOAD_IPV4_CKSUM  |
 188                 DEV_TX_OFFLOAD_UDP_CKSUM   |
 189                 DEV_TX_OFFLOAD_TCP_CKSUM   |
 190                 DEV_TX_OFFLOAD_TCP_TSO     |
 191                 DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM;
 192
 193         dev_info->reta_size = nic->rss_info.rss_size;
 194         dev_info->hash_key_size = RSS_HASH_KEY_BYTE_SIZE;
 195         dev_info->flow_type_rss_offloads = NICVF_RSS_OFFLOAD_PASS1;
 196         if (nicvf_hw_cap(nic) & NICVF_CAP_TUNNEL_PARSING)
 197                 dev_info->flow_type_rss_offloads |= NICVF_RSS_OFFLOAD_TUNNEL;
 198
 199         dev_info->default_rxconf = (struct rte_eth_rxconf) {
 200                 .rx_free_thresh = NICVF_DEFAULT_RX_FREE_THRESH,
 201                 .rx_drop_en = 0,
 202         };
 203
 204         dev_info->default_txconf = (struct rte_eth_txconf) {
 205                 .tx_free_thresh = NICVF_DEFAULT_TX_FREE_THRESH,
 206                 .txq_flags =
 207                         ETH_TXQ_FLAGS_NOMULTSEGS  |
 208                         ETH_TXQ_FLAGS_NOREFCOUNT  |
 209                         ETH_TXQ_FLAGS_NOMULTMEMP  |
 210                         ETH_TXQ_FLAGS_NOVLANOFFL  |
 211                         ETH_TXQ_FLAGS_NOXSUMSCTP,
 212         };
 213 }
 214
 215 static int
 216 nicvf_dev_configure(struct rte_eth_dev *dev)
 217 {
 218         struct rte_eth_conf *conf = &dev->data->dev_conf;
 219         struct rte_eth_rxmode *rxmode = &conf->rxmode;
 220         struct rte_eth_txmode *txmode = &conf->txmode;
 221         struct nicvf *nic = nicvf_pmd_priv(dev);
 222
 223         PMD_INIT_FUNC_TRACE();
 224
 225         if (!rte_eal_has_hugepages()) {
 226                 PMD_INIT_LOG(INFO, "Huge page is not configured");
 227                 return -EINVAL;
 228         }
 229
 230         if (txmode->mq_mode) {
 231                 PMD_INIT_LOG(INFO, "Tx mq_mode DCB or VMDq not supported");
 232                 return -EINVAL;
 233         }
 234
 235         if (rxmode->mq_mode != ETH_MQ_RX_NONE &&
 236                 rxmode->mq_mode != ETH_MQ_RX_RSS) {
 237                 PMD_INIT_LOG(INFO, "Unsupported rx qmode %d", rxmode->mq_mode);
 238                 return -EINVAL;
 239         }
 240
 241         if (!rxmode->hw_strip_crc) {
 242                 PMD_INIT_LOG(NOTICE, "Can't disable hw crc strip");
 243                 rxmode->hw_strip_crc = 1;
 244         }
 245
 246         if (rxmode->hw_ip_checksum) {
 247                 PMD_INIT_LOG(NOTICE, "Rxcksum not supported");
 248                 rxmode->hw_ip_checksum = 0;
 249         }
 250
 251         if (rxmode->split_hdr_size) {
 252                 PMD_INIT_LOG(INFO, "Rxmode does not support split header");
 253                 return -EINVAL;
 254         }
 255
 256         if (rxmode->hw_vlan_filter) {
 257                 PMD_INIT_LOG(INFO, "VLAN filter not supported");
 258                 return -EINVAL;
 259         }
 260
 261         if (rxmode->hw_vlan_extend) {
 262                 PMD_INIT_LOG(INFO, "VLAN extended not supported");
 263                 return -EINVAL;
 264         }
 265
 266         if (rxmode->enable_lro) {
 267                 PMD_INIT_LOG(INFO, "LRO not supported");
 268                 return -EINVAL;
 269         }
 270
 271         if (conf->link_speeds & ETH_LINK_SPEED_FIXED) {
 272                 PMD_INIT_LOG(INFO, "Setting link speed/duplex not supported");
 273                 return -EINVAL;
 274         }
 275
 276         if (conf->dcb_capability_en) {
 277                 PMD_INIT_LOG(INFO, "DCB enable not supported");
 278                 return -EINVAL;
 279         }
 280
 281         if (conf->fdir_conf.mode != RTE_FDIR_MODE_NONE) {
 282                 PMD_INIT_LOG(INFO, "Flow director not supported");
 283                 return -EINVAL;
 284         }
 285
 286         PMD_INIT_LOG(DEBUG, "Configured ethdev port%d hwcap=0x%" PRIx64,
 287                 dev->data->port_id, nicvf_hw_cap(nic));
 288
 289         return 0;
 290 }
 291
 292 /* Initialize and register driver with DPDK Application */
 293 static const struct eth_dev_ops nicvf_eth_dev_ops = {
 294         .dev_configure            = nicvf_dev_configure,
 295         .link_update              = nicvf_dev_link_update,
 296         .dev_infos_get            = nicvf_dev_info_get,
 297         .get_reg_length           = nicvf_dev_get_reg_length,
 298         .get_reg                  = nicvf_dev_get_regs,
 299 };
 300
 301 static int
 302 nicvf_eth_dev_init(struct rte_eth_dev *eth_dev)
 303 {
 304         int ret;
 305         struct rte_pci_device *pci_dev;
 306         struct nicvf *nic = nicvf_pmd_priv(eth_dev);
 307
 308         PMD_INIT_FUNC_TRACE();
 309
 310         eth_dev->dev_ops = &nicvf_eth_dev_ops;
 311
 312         pci_dev = eth_dev->pci_dev;
 313         rte_eth_copy_pci_info(eth_dev, pci_dev);
 314
 315         nic->device_id = pci_dev->id.device_id;
 316         nic->vendor_id = pci_dev->id.vendor_id;
 317         nic->subsystem_device_id = pci_dev->id.subsystem_device_id;
 318         nic->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id;
 319         nic->eth_dev = eth_dev;
 320
 321         PMD_INIT_LOG(DEBUG, "nicvf: device (%x:%x) %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         nic->reg_base = (uintptr_t)pci_dev->mem_resource[0].addr;
 327         if (!nic->reg_base) {
 328                 PMD_INIT_LOG(ERR, "Failed to map BAR0");
 329                 ret = -ENODEV;
 330                 goto fail;
 331         }
 332
 333         nicvf_disable_all_interrupts(nic);
 334
 335         ret = nicvf_periodic_alarm_start(nic);
 336         if (ret) {
 337                 PMD_INIT_LOG(ERR, "Failed to start period alarm");
 338                 goto fail;
 339         }
 340
 341         ret = nicvf_mbox_check_pf_ready(nic);
 342         if (ret) {
 343                 PMD_INIT_LOG(ERR, "Failed to get ready message from PF");
 344                 goto alarm_fail;
 345         } else {
 346                 PMD_INIT_LOG(INFO,
 347                         "node=%d vf=%d mode=%s sqs=%s loopback_supported=%s",
 348                         nic->node, nic->vf_id,
 349                         nic->tns_mode == NIC_TNS_MODE ? "tns" : "tns-bypass",
 350                         nic->sqs_mode ? "true" : "false",
 351                         nic->loopback_supported ? "true" : "false"
 352                         );
 353         }
 354
 355         if (nic->sqs_mode) {
 356                 PMD_INIT_LOG(INFO, "Unsupported SQS VF detected, Detaching...");
 357                 /* Detach port by returning Positive error number */
 358                 ret = ENOTSUP;
 359                 goto alarm_fail;
 360         }
 361
 362         eth_dev->data->mac_addrs = rte_zmalloc("mac_addr", ETHER_ADDR_LEN, 0);
 363         if (eth_dev->data->mac_addrs == NULL) {
 364                 PMD_INIT_LOG(ERR, "Failed to allocate memory for mac addr");
 365                 ret = -ENOMEM;
 366                 goto alarm_fail;
 367         }
 368         if (is_zero_ether_addr((struct ether_addr *)nic->mac_addr))
 369                 eth_random_addr(&nic->mac_addr[0]);
 370
 371         ether_addr_copy((struct ether_addr *)nic->mac_addr,
 372                         &eth_dev->data->mac_addrs[0]);
 373
 374         ret = nicvf_mbox_set_mac_addr(nic, nic->mac_addr);
 375         if (ret) {
 376                 PMD_INIT_LOG(ERR, "Failed to set mac addr");
 377                 goto malloc_fail;
 378         }
 379
 380         ret = nicvf_base_init(nic);
 381         if (ret) {
 382                 PMD_INIT_LOG(ERR, "Failed to execute nicvf_base_init");
 383                 goto malloc_fail;
 384         }
 385
 386         ret = nicvf_mbox_get_rss_size(nic);
 387         if (ret) {
 388                 PMD_INIT_LOG(ERR, "Failed to get rss table size");
 389                 goto malloc_fail;
 390         }
 391
 392         PMD_INIT_LOG(INFO, "Port %d (%x:%x) mac=%02x:%02x:%02x:%02x:%02x:%02x",
 393                 eth_dev->data->port_id, nic->vendor_id, nic->device_id,
 394                 nic->mac_addr[0], nic->mac_addr[1], nic->mac_addr[2],
 395                 nic->mac_addr[3], nic->mac_addr[4], nic->mac_addr[5]);
 396
 397         return 0;
 398
 399 malloc_fail:
 400         rte_free(eth_dev->data->mac_addrs);
 401 alarm_fail:
 402         nicvf_periodic_alarm_stop(nic);
 403 fail:
 404         return ret;
 405 }
 406
 407 static const struct rte_pci_id pci_id_nicvf_map[] = {
 408         {
 409                 .class_id = RTE_CLASS_ANY_ID,
 410                 .vendor_id = PCI_VENDOR_ID_CAVIUM,
 411                 .device_id = PCI_DEVICE_ID_THUNDERX_PASS1_NICVF,
 412                 .subsystem_vendor_id = PCI_VENDOR_ID_CAVIUM,
 413                 .subsystem_device_id = PCI_SUB_DEVICE_ID_THUNDERX_PASS1_NICVF,
 414         },
 415         {
 416                 .class_id = RTE_CLASS_ANY_ID,
 417                 .vendor_id = PCI_VENDOR_ID_CAVIUM,
 418                 .device_id = PCI_DEVICE_ID_THUNDERX_PASS2_NICVF,
 419                 .subsystem_vendor_id = PCI_VENDOR_ID_CAVIUM,
 420                 .subsystem_device_id = PCI_SUB_DEVICE_ID_THUNDERX_PASS2_NICVF,
 421         },
 422         {
 423                 .vendor_id = 0,
 424         },
 425 };
 426
 427 static struct eth_driver rte_nicvf_pmd = {
 428         .pci_drv = {
 429                 .name = "rte_nicvf_pmd",
 430                 .id_table = pci_id_nicvf_map,
 431                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
 432         },
 433         .eth_dev_init = nicvf_eth_dev_init,
 434         .dev_private_size = sizeof(struct nicvf),
 435 };
 436
 437 static int
 438 rte_nicvf_pmd_init(const char *name __rte_unused, const char *para __rte_unused)
 439 {
 440         PMD_INIT_FUNC_TRACE();
 441         PMD_INIT_LOG(INFO, "librte_pmd_thunderx nicvf version %s",
 442                         THUNDERX_NICVF_PMD_VERSION);
 443
 444         rte_eth_driver_register(&rte_nicvf_pmd);
 445         return 0;
 446 }
 447
 448 static struct rte_driver rte_nicvf_driver = {
 449         .name = "nicvf_driver",
 450         .type = PMD_PDEV,
 451         .init = rte_nicvf_pmd_init,
 452 };
 453
 454 PMD_REGISTER_DRIVER(rte_nicvf_driver);