drivers/net/ethernet/huawei/hinic/hinic_main.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Huawei HiNIC PCI Express Linux driver
   4  * Copyright(c) 2017 Huawei Technologies Co., Ltd
   5  */
   6
   7 #include <linux/kernel.h>
   8 #include <linux/module.h>
   9 #include <linux/moduleparam.h>
  10 #include <linux/pci.h>
  11 #include <linux/device.h>
  12 #include <linux/errno.h>
  13 #include <linux/types.h>
  14 #include <linux/etherdevice.h>
  15 #include <linux/netdevice.h>
  16 #include <linux/slab.h>
  17 #include <linux/if_vlan.h>
  18 #include <linux/semaphore.h>
  19 #include <linux/workqueue.h>
  20 #include <net/ip.h>
  21 #include <linux/bitops.h>
  22 #include <linux/bitmap.h>
  23 #include <linux/delay.h>
  24 #include <linux/err.h>
  25
  26 #include "hinic_hw_qp.h"
  27 #include "hinic_hw_dev.h"
  28 #include "hinic_port.h"
  29 #include "hinic_tx.h"
  30 #include "hinic_rx.h"
  31 #include "hinic_dev.h"
  32
  33 MODULE_AUTHOR("Huawei Technologies CO., Ltd");
  34 MODULE_DESCRIPTION("Huawei Intelligent NIC driver");
  35 MODULE_LICENSE("GPL");
  36
  37 static unsigned int tx_weight = 64;
  38 module_param(tx_weight, uint, 0644);
  39 MODULE_PARM_DESC(tx_weight, "Number Tx packets for NAPI budget (default=64)");
  40
  41 static unsigned int rx_weight = 64;
  42 module_param(rx_weight, uint, 0644);
  43 MODULE_PARM_DESC(rx_weight, "Number Rx packets for NAPI budget (default=64)");
  44
  45 #define HINIC_DEV_ID_QUAD_PORT_25GE         0x1822
  46 #define HINIC_DEV_ID_DUAL_PORT_100GE        0x0200
  47 #define HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ   0x0205
  48 #define HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ    0x0210
  49
  50 #define HINIC_WQ_NAME                   "hinic_dev"
  51
  52 #define MSG_ENABLE_DEFAULT              (NETIF_MSG_DRV | NETIF_MSG_PROBE | \
  53                                          NETIF_MSG_IFUP |                  \
  54                                          NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR)
  55
  56 #define VLAN_BITMAP_SIZE(nic_dev)       (ALIGN(VLAN_N_VID, 8) / 8)
  57
  58 #define work_to_rx_mode_work(work)      \
  59                 container_of(work, struct hinic_rx_mode_work, work)
  60
  61 #define rx_mode_work_to_nic_dev(rx_mode_work) \
  62                 container_of(rx_mode_work, struct hinic_dev, rx_mode_work)
  63
  64 static int change_mac_addr(struct net_device *netdev, const u8 *addr);
  65
  66 static void set_link_speed(struct ethtool_link_ksettings *link_ksettings,
  67                            enum hinic_speed speed)
  68 {
  69         switch (speed) {
  70         case HINIC_SPEED_10MB_LINK:
  71                 link_ksettings->base.speed = SPEED_10;
  72                 break;
  73
  74         case HINIC_SPEED_100MB_LINK:
  75                 link_ksettings->base.speed = SPEED_100;
  76                 break;
  77
  78         case HINIC_SPEED_1000MB_LINK:
  79                 link_ksettings->base.speed = SPEED_1000;
  80                 break;
  81
  82         case HINIC_SPEED_10GB_LINK:
  83                 link_ksettings->base.speed = SPEED_10000;
  84                 break;
  85
  86         case HINIC_SPEED_25GB_LINK:
  87                 link_ksettings->base.speed = SPEED_25000;
  88                 break;
  89
  90         case HINIC_SPEED_40GB_LINK:
  91                 link_ksettings->base.speed = SPEED_40000;
  92                 break;
  93
  94         case HINIC_SPEED_100GB_LINK:
  95                 link_ksettings->base.speed = SPEED_100000;
  96                 break;
  97
  98         default:
  99                 link_ksettings->base.speed = SPEED_UNKNOWN;
 100                 break;
 101         }
 102 }
 103
 104 static int hinic_get_link_ksettings(struct net_device *netdev,
 105                                     struct ethtool_link_ksettings
 106                                     *link_ksettings)
 107 {
 108         struct hinic_dev *nic_dev = netdev_priv(netdev);
 109         enum hinic_port_link_state link_state;
 110         struct hinic_port_cap port_cap;
 111         int err;
 112
 113         ethtool_link_ksettings_zero_link_mode(link_ksettings, advertising);
 114         ethtool_link_ksettings_add_link_mode(link_ksettings, supported,
 115                                              Autoneg);
 116
 117         link_ksettings->base.speed   = SPEED_UNKNOWN;
 118         link_ksettings->base.autoneg = AUTONEG_DISABLE;
 119         link_ksettings->base.duplex  = DUPLEX_UNKNOWN;
 120
 121         err = hinic_port_get_cap(nic_dev, &port_cap);
 122         if (err) {
 123                 netif_err(nic_dev, drv, netdev,
 124                           "Failed to get port capabilities\n");
 125                 return err;
 126         }
 127
 128         err = hinic_port_link_state(nic_dev, &link_state);
 129         if (err) {
 130                 netif_err(nic_dev, drv, netdev,
 131                           "Failed to get port link state\n");
 132                 return err;
 133         }
 134
 135         if (link_state != HINIC_LINK_STATE_UP) {
 136                 netif_info(nic_dev, drv, netdev, "No link\n");
 137                 return err;
 138         }
 139
 140         set_link_speed(link_ksettings, port_cap.speed);
 141
 142         if (!!(port_cap.autoneg_cap & HINIC_AUTONEG_SUPPORTED))
 143                 ethtool_link_ksettings_add_link_mode(link_ksettings,
 144                                                      advertising, Autoneg);
 145
 146         if (port_cap.autoneg_state == HINIC_AUTONEG_ACTIVE)
 147                 link_ksettings->base.autoneg = AUTONEG_ENABLE;
 148
 149         link_ksettings->base.duplex = (port_cap.duplex == HINIC_DUPLEX_FULL) ?
 150                                        DUPLEX_FULL : DUPLEX_HALF;
 151         return 0;
 152 }
 153
 154 static void hinic_get_drvinfo(struct net_device *netdev,
 155                               struct ethtool_drvinfo *info)
 156 {
 157         struct hinic_dev *nic_dev = netdev_priv(netdev);
 158         struct hinic_hwdev *hwdev = nic_dev->hwdev;
 159         struct hinic_hwif *hwif = hwdev->hwif;
 160
 161         strlcpy(info->driver, HINIC_DRV_NAME, sizeof(info->driver));
 162         strlcpy(info->bus_info, pci_name(hwif->pdev), sizeof(info->bus_info));
 163 }
 164
 165 static void hinic_get_ringparam(struct net_device *netdev,
 166                                 struct ethtool_ringparam *ring)
 167 {
 168         ring->rx_max_pending = HINIC_RQ_DEPTH;
 169         ring->tx_max_pending = HINIC_SQ_DEPTH;
 170         ring->rx_pending = HINIC_RQ_DEPTH;
 171         ring->tx_pending = HINIC_SQ_DEPTH;
 172 }
 173
 174 static void hinic_get_channels(struct net_device *netdev,
 175                                struct ethtool_channels *channels)
 176 {
 177         struct hinic_dev *nic_dev = netdev_priv(netdev);
 178         struct hinic_hwdev *hwdev = nic_dev->hwdev;
 179
 180         channels->max_rx = hwdev->nic_cap.max_qps;
 181         channels->max_tx = hwdev->nic_cap.max_qps;
 182         channels->max_other    = 0;
 183         channels->max_combined = 0;
 184         channels->rx_count = hinic_hwdev_num_qps(hwdev);
 185         channels->tx_count = hinic_hwdev_num_qps(hwdev);
 186         channels->other_count    = 0;
 187         channels->combined_count = 0;
 188 }
 189
 190 static const struct ethtool_ops hinic_ethtool_ops = {
 191         .get_link_ksettings = hinic_get_link_ksettings,
 192         .get_drvinfo = hinic_get_drvinfo,
 193         .get_link = ethtool_op_get_link,
 194         .get_ringparam = hinic_get_ringparam,
 195         .get_channels = hinic_get_channels,
 196 };
 197
 198 static void update_rx_stats(struct hinic_dev *nic_dev, struct hinic_rxq *rxq)
 199 {
 200         struct hinic_rxq_stats *nic_rx_stats = &nic_dev->rx_stats;
 201         struct hinic_rxq_stats rx_stats;
 202
 203         u64_stats_init(&rx_stats.syncp);
 204
 205         hinic_rxq_get_stats(rxq, &rx_stats);
 206
 207         u64_stats_update_begin(&nic_rx_stats->syncp);
 208         nic_rx_stats->bytes += rx_stats.bytes;
 209         nic_rx_stats->pkts  += rx_stats.pkts;
 210         u64_stats_update_end(&nic_rx_stats->syncp);
 211
 212         hinic_rxq_clean_stats(rxq);
 213 }
 214
 215 static void update_tx_stats(struct hinic_dev *nic_dev, struct hinic_txq *txq)
 216 {
 217         struct hinic_txq_stats *nic_tx_stats = &nic_dev->tx_stats;
 218         struct hinic_txq_stats tx_stats;
 219
 220         u64_stats_init(&tx_stats.syncp);
 221
 222         hinic_txq_get_stats(txq, &tx_stats);
 223
 224         u64_stats_update_begin(&nic_tx_stats->syncp);
 225         nic_tx_stats->bytes += tx_stats.bytes;
 226         nic_tx_stats->pkts += tx_stats.pkts;
 227         nic_tx_stats->tx_busy += tx_stats.tx_busy;
 228         nic_tx_stats->tx_wake += tx_stats.tx_wake;
 229         nic_tx_stats->tx_dropped += tx_stats.tx_dropped;
 230         u64_stats_update_end(&nic_tx_stats->syncp);
 231
 232         hinic_txq_clean_stats(txq);
 233 }
 234
 235 static void update_nic_stats(struct hinic_dev *nic_dev)
 236 {
 237         int i, num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
 238
 239         for (i = 0; i < num_qps; i++)
 240                 update_rx_stats(nic_dev, &nic_dev->rxqs[i]);
 241
 242         for (i = 0; i < num_qps; i++)
 243                 update_tx_stats(nic_dev, &nic_dev->txqs[i]);
 244 }
 245
 246 /**
 247  * create_txqs - Create the Logical Tx Queues of specific NIC device
 248  * @nic_dev: the specific NIC device
 249  *
 250  * Return 0 - Success, negative - Failure
 251  **/
 252 static int create_txqs(struct hinic_dev *nic_dev)
 253 {
 254         int err, i, j, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 255         struct net_device *netdev = nic_dev->netdev;
 256         size_t txq_size;
 257
 258         if (nic_dev->txqs)
 259                 return -EINVAL;
 260
 261         txq_size = num_txqs * sizeof(*nic_dev->txqs);
 262         nic_dev->txqs = devm_kzalloc(&netdev->dev, txq_size, GFP_KERNEL);
 263         if (!nic_dev->txqs)
 264                 return -ENOMEM;
 265
 266         for (i = 0; i < num_txqs; i++) {
 267                 struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i);
 268
 269                 err = hinic_init_txq(&nic_dev->txqs[i], sq, netdev);
 270                 if (err) {
 271                         netif_err(nic_dev, drv, netdev,
 272                                   "Failed to init Txq\n");
 273                         goto err_init_txq;
 274                 }
 275         }
 276
 277         return 0;
 278
 279 err_init_txq:
 280         for (j = 0; j < i; j++)
 281                 hinic_clean_txq(&nic_dev->txqs[j]);
 282
 283         devm_kfree(&netdev->dev, nic_dev->txqs);
 284         return err;
 285 }
 286
 287 /**
 288  * free_txqs - Free the Logical Tx Queues of specific NIC device
 289  * @nic_dev: the specific NIC device
 290  **/
 291 static void free_txqs(struct hinic_dev *nic_dev)
 292 {
 293         int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 294         struct net_device *netdev = nic_dev->netdev;
 295
 296         if (!nic_dev->txqs)
 297                 return;
 298
 299         for (i = 0; i < num_txqs; i++)
 300                 hinic_clean_txq(&nic_dev->txqs[i]);
 301
 302         devm_kfree(&netdev->dev, nic_dev->txqs);
 303         nic_dev->txqs = NULL;
 304 }
 305
 306 /**
 307  * create_txqs - Create the Logical Rx Queues of specific NIC device
 308  * @nic_dev: the specific NIC device
 309  *
 310  * Return 0 - Success, negative - Failure
 311  **/
 312 static int create_rxqs(struct hinic_dev *nic_dev)
 313 {
 314         int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 315         struct net_device *netdev = nic_dev->netdev;
 316         size_t rxq_size;
 317
 318         if (nic_dev->rxqs)
 319                 return -EINVAL;
 320
 321         rxq_size = num_rxqs * sizeof(*nic_dev->rxqs);
 322         nic_dev->rxqs = devm_kzalloc(&netdev->dev, rxq_size, GFP_KERNEL);
 323         if (!nic_dev->rxqs)
 324                 return -ENOMEM;
 325
 326         for (i = 0; i < num_rxqs; i++) {
 327                 struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
 328
 329                 err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev);
 330                 if (err) {
 331                         netif_err(nic_dev, drv, netdev,
 332                                   "Failed to init rxq\n");
 333                         goto err_init_rxq;
 334                 }
 335         }
 336
 337         return 0;
 338
 339 err_init_rxq:
 340         for (j = 0; j < i; j++)
 341                 hinic_clean_rxq(&nic_dev->rxqs[j]);
 342
 343         devm_kfree(&netdev->dev, nic_dev->rxqs);
 344         return err;
 345 }
 346
 347 /**
 348  * free_txqs - Free the Logical Rx Queues of specific NIC device
 349  * @nic_dev: the specific NIC device
 350  **/
 351 static void free_rxqs(struct hinic_dev *nic_dev)
 352 {
 353         int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 354         struct net_device *netdev = nic_dev->netdev;
 355
 356         if (!nic_dev->rxqs)
 357                 return;
 358
 359         for (i = 0; i < num_rxqs; i++)
 360                 hinic_clean_rxq(&nic_dev->rxqs[i]);
 361
 362         devm_kfree(&netdev->dev, nic_dev->rxqs);
 363         nic_dev->rxqs = NULL;
 364 }
 365
 366 static int hinic_open(struct net_device *netdev)
 367 {
 368         struct hinic_dev *nic_dev = netdev_priv(netdev);
 369         enum hinic_port_link_state link_state;
 370         int err, ret, num_qps;
 371
 372         if (!(nic_dev->flags & HINIC_INTF_UP)) {
 373                 err = hinic_hwdev_ifup(nic_dev->hwdev);
 374                 if (err) {
 375                         netif_err(nic_dev, drv, netdev,
 376                                   "Failed - HW interface up\n");
 377                         return err;
 378                 }
 379         }
 380
 381         err = create_txqs(nic_dev);
 382         if (err) {
 383                 netif_err(nic_dev, drv, netdev,
 384                           "Failed to create Tx queues\n");
 385                 goto err_create_txqs;
 386         }
 387
 388         err = create_rxqs(nic_dev);
 389         if (err) {
 390                 netif_err(nic_dev, drv, netdev,
 391                           "Failed to create Rx queues\n");
 392                 goto err_create_rxqs;
 393         }
 394
 395         num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
 396         netif_set_real_num_tx_queues(netdev, num_qps);
 397         netif_set_real_num_rx_queues(netdev, num_qps);
 398
 399         err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE);
 400         if (err) {
 401                 netif_err(nic_dev, drv, netdev,
 402                           "Failed to set port state\n");
 403                 goto err_port_state;
 404         }
 405
 406         err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE);
 407         if (err) {
 408                 netif_err(nic_dev, drv, netdev,
 409                           "Failed to set func port state\n");
 410                 goto err_func_port_state;
 411         }
 412
 413         /* Wait up to 3 sec between port enable to link state */
 414         msleep(3000);
 415
 416         down(&nic_dev->mgmt_lock);
 417
 418         err = hinic_port_link_state(nic_dev, &link_state);
 419         if (err) {
 420                 netif_err(nic_dev, drv, netdev, "Failed to get link state\n");
 421                 goto err_port_link;
 422         }
 423
 424         if (link_state == HINIC_LINK_STATE_UP)
 425                 nic_dev->flags |= HINIC_LINK_UP;
 426
 427         nic_dev->flags |= HINIC_INTF_UP;
 428
 429         if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
 430             (HINIC_LINK_UP | HINIC_INTF_UP)) {
 431                 netif_info(nic_dev, drv, netdev, "link + intf UP\n");
 432                 netif_carrier_on(netdev);
 433                 netif_tx_wake_all_queues(netdev);
 434         }
 435
 436         up(&nic_dev->mgmt_lock);
 437
 438         netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n");
 439         return 0;
 440
 441 err_port_link:
 442         up(&nic_dev->mgmt_lock);
 443         ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
 444         if (ret)
 445                 netif_warn(nic_dev, drv, netdev,
 446                            "Failed to revert func port state\n");
 447
 448 err_func_port_state:
 449         ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
 450         if (ret)
 451                 netif_warn(nic_dev, drv, netdev,
 452                            "Failed to revert port state\n");
 453
 454 err_port_state:
 455         free_rxqs(nic_dev);
 456
 457 err_create_rxqs:
 458         free_txqs(nic_dev);
 459
 460 err_create_txqs:
 461         if (!(nic_dev->flags & HINIC_INTF_UP))
 462                 hinic_hwdev_ifdown(nic_dev->hwdev);
 463         return err;
 464 }
 465
 466 static int hinic_close(struct net_device *netdev)
 467 {
 468         struct hinic_dev *nic_dev = netdev_priv(netdev);
 469         unsigned int flags;
 470         int err;
 471
 472         down(&nic_dev->mgmt_lock);
 473
 474         flags = nic_dev->flags;
 475         nic_dev->flags &= ~HINIC_INTF_UP;
 476
 477         netif_carrier_off(netdev);
 478         netif_tx_disable(netdev);
 479
 480         update_nic_stats(nic_dev);
 481
 482         up(&nic_dev->mgmt_lock);
 483
 484         err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
 485         if (err) {
 486                 netif_err(nic_dev, drv, netdev,
 487                           "Failed to set func port state\n");
 488                 nic_dev->flags |= (flags & HINIC_INTF_UP);
 489                 return err;
 490         }
 491
 492         err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
 493         if (err) {
 494                 netif_err(nic_dev, drv, netdev, "Failed to set port state\n");
 495                 nic_dev->flags |= (flags & HINIC_INTF_UP);
 496                 return err;
 497         }
 498
 499         free_rxqs(nic_dev);
 500         free_txqs(nic_dev);
 501
 502         if (flags & HINIC_INTF_UP)
 503                 hinic_hwdev_ifdown(nic_dev->hwdev);
 504
 505         netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n");
 506         return 0;
 507 }
 508
 509 static int hinic_change_mtu(struct net_device *netdev, int new_mtu)
 510 {
 511         struct hinic_dev *nic_dev = netdev_priv(netdev);
 512         int err;
 513
 514         netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu);
 515
 516         err = hinic_port_set_mtu(nic_dev, new_mtu);
 517         if (err)
 518                 netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n");
 519         else
 520                 netdev->mtu = new_mtu;
 521
 522         return err;
 523 }
 524
 525 /**
 526  * change_mac_addr - change the main mac address of network device
 527  * @netdev: network device
 528  * @addr: mac address to set
 529  *
 530  * Return 0 - Success, negative - Failure
 531  **/
 532 static int change_mac_addr(struct net_device *netdev, const u8 *addr)
 533 {
 534         struct hinic_dev *nic_dev = netdev_priv(netdev);
 535         u16 vid = 0;
 536         int err;
 537
 538         if (!is_valid_ether_addr(addr))
 539                 return -EADDRNOTAVAIL;
 540
 541         netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n",
 542                    addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 543
 544         down(&nic_dev->mgmt_lock);
 545
 546         do {
 547                 err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid);
 548                 if (err) {
 549                         netif_err(nic_dev, drv, netdev,
 550                                   "Failed to delete mac\n");
 551                         break;
 552                 }
 553
 554                 err = hinic_port_add_mac(nic_dev, addr, vid);
 555                 if (err) {
 556                         netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
 557                         break;
 558                 }
 559
 560                 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
 561         } while (vid != VLAN_N_VID);
 562
 563         up(&nic_dev->mgmt_lock);
 564         return err;
 565 }
 566
 567 static int hinic_set_mac_addr(struct net_device *netdev, void *addr)
 568 {
 569         unsigned char new_mac[ETH_ALEN];
 570         struct sockaddr *saddr = addr;
 571         int err;
 572
 573         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 574
 575         err = change_mac_addr(netdev, new_mac);
 576         if (!err)
 577                 memcpy(netdev->dev_addr, new_mac, ETH_ALEN);
 578
 579         return err;
 580 }
 581
 582 /**
 583  * add_mac_addr - add mac address to network device
 584  * @netdev: network device
 585  * @addr: mac address to add
 586  *
 587  * Return 0 - Success, negative - Failure
 588  **/
 589 static int add_mac_addr(struct net_device *netdev, const u8 *addr)
 590 {
 591         struct hinic_dev *nic_dev = netdev_priv(netdev);
 592         u16 vid = 0;
 593         int err;
 594
 595         netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n",
 596                    addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 597
 598         down(&nic_dev->mgmt_lock);
 599
 600         do {
 601                 err = hinic_port_add_mac(nic_dev, addr, vid);
 602                 if (err) {
 603                         netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
 604                         break;
 605                 }
 606
 607                 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
 608         } while (vid != VLAN_N_VID);
 609
 610         up(&nic_dev->mgmt_lock);
 611         return err;
 612 }
 613
 614 /**
 615  * remove_mac_addr - remove mac address from network device
 616  * @netdev: network device
 617  * @addr: mac address to remove
 618  *
 619  * Return 0 - Success, negative - Failure
 620  **/
 621 static int remove_mac_addr(struct net_device *netdev, const u8 *addr)
 622 {
 623         struct hinic_dev *nic_dev = netdev_priv(netdev);
 624         u16 vid = 0;
 625         int err;
 626
 627         if (!is_valid_ether_addr(addr))
 628                 return -EADDRNOTAVAIL;
 629
 630         netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n",
 631                    addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 632
 633         down(&nic_dev->mgmt_lock);
 634
 635         do {
 636                 err = hinic_port_del_mac(nic_dev, addr, vid);
 637                 if (err) {
 638                         netif_err(nic_dev, drv, netdev,
 639                                   "Failed to delete mac\n");
 640                         break;
 641                 }
 642
 643                 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
 644         } while (vid != VLAN_N_VID);
 645
 646         up(&nic_dev->mgmt_lock);
 647         return err;
 648 }
 649
 650 static int hinic_vlan_rx_add_vid(struct net_device *netdev,
 651                                  __always_unused __be16 proto, u16 vid)
 652 {
 653         struct hinic_dev *nic_dev = netdev_priv(netdev);
 654         int ret, err;
 655
 656         netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid);
 657
 658         down(&nic_dev->mgmt_lock);
 659
 660         err = hinic_port_add_vlan(nic_dev, vid);
 661         if (err) {
 662                 netif_err(nic_dev, drv, netdev, "Failed to add vlan\n");
 663                 goto err_vlan_add;
 664         }
 665
 666         err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid);
 667         if (err) {
 668                 netif_err(nic_dev, drv, netdev, "Failed to set mac\n");
 669                 goto err_add_mac;
 670         }
 671
 672         bitmap_set(nic_dev->vlan_bitmap, vid, 1);
 673
 674         up(&nic_dev->mgmt_lock);
 675         return 0;
 676
 677 err_add_mac:
 678         ret = hinic_port_del_vlan(nic_dev, vid);
 679         if (ret)
 680                 netif_err(nic_dev, drv, netdev,
 681                           "Failed to revert by removing vlan\n");
 682
 683 err_vlan_add:
 684         up(&nic_dev->mgmt_lock);
 685         return err;
 686 }
 687
 688 static int hinic_vlan_rx_kill_vid(struct net_device *netdev,
 689                                   __always_unused __be16 proto, u16 vid)
 690 {
 691         struct hinic_dev *nic_dev = netdev_priv(netdev);
 692         int err;
 693
 694         netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid);
 695
 696         down(&nic_dev->mgmt_lock);
 697
 698         err = hinic_port_del_vlan(nic_dev, vid);
 699         if (err) {
 700                 netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n");
 701                 goto err_del_vlan;
 702         }
 703
 704         bitmap_clear(nic_dev->vlan_bitmap, vid, 1);
 705
 706         up(&nic_dev->mgmt_lock);
 707         return 0;
 708
 709 err_del_vlan:
 710         up(&nic_dev->mgmt_lock);
 711         return err;
 712 }
 713
 714 static void set_rx_mode(struct work_struct *work)
 715 {
 716         struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work);
 717         struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work);
 718         struct netdev_hw_addr *ha;
 719
 720         netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n");
 721
 722         hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode);
 723
 724         __dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
 725         __dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
 726
 727         netdev_for_each_mc_addr(ha, nic_dev->netdev)
 728                 add_mac_addr(nic_dev->netdev, ha->addr);
 729 }
 730
 731 static void hinic_set_rx_mode(struct net_device *netdev)
 732 {
 733         struct hinic_dev *nic_dev = netdev_priv(netdev);
 734         struct hinic_rx_mode_work *rx_mode_work;
 735         u32 rx_mode;
 736
 737         rx_mode_work = &nic_dev->rx_mode_work;
 738
 739         rx_mode = HINIC_RX_MODE_UC |
 740                   HINIC_RX_MODE_MC |
 741                   HINIC_RX_MODE_BC;
 742
 743         if (netdev->flags & IFF_PROMISC)
 744                 rx_mode |= HINIC_RX_MODE_PROMISC;
 745         else if (netdev->flags & IFF_ALLMULTI)
 746                 rx_mode |= HINIC_RX_MODE_MC_ALL;
 747
 748         rx_mode_work->rx_mode = rx_mode;
 749
 750         queue_work(nic_dev->workq, &rx_mode_work->work);
 751 }
 752
 753 static void hinic_tx_timeout(struct net_device *netdev)
 754 {
 755         struct hinic_dev *nic_dev = netdev_priv(netdev);
 756
 757         netif_err(nic_dev, drv, netdev, "Tx timeout\n");
 758 }
 759
 760 static void hinic_get_stats64(struct net_device *netdev,
 761                               struct rtnl_link_stats64 *stats)
 762 {
 763         struct hinic_dev *nic_dev = netdev_priv(netdev);
 764         struct hinic_rxq_stats *nic_rx_stats;
 765         struct hinic_txq_stats *nic_tx_stats;
 766
 767         nic_rx_stats = &nic_dev->rx_stats;
 768         nic_tx_stats = &nic_dev->tx_stats;
 769
 770         down(&nic_dev->mgmt_lock);
 771
 772         if (nic_dev->flags & HINIC_INTF_UP)
 773                 update_nic_stats(nic_dev);
 774
 775         up(&nic_dev->mgmt_lock);
 776
 777         stats->rx_bytes   = nic_rx_stats->bytes;
 778         stats->rx_packets = nic_rx_stats->pkts;
 779
 780         stats->tx_bytes   = nic_tx_stats->bytes;
 781         stats->tx_packets = nic_tx_stats->pkts;
 782         stats->tx_errors  = nic_tx_stats->tx_dropped;
 783 }
 784
 785 static const struct net_device_ops hinic_netdev_ops = {
 786         .ndo_open = hinic_open,
 787         .ndo_stop = hinic_close,
 788         .ndo_change_mtu = hinic_change_mtu,
 789         .ndo_set_mac_address = hinic_set_mac_addr,
 790         .ndo_validate_addr = eth_validate_addr,
 791         .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
 792         .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
 793         .ndo_set_rx_mode = hinic_set_rx_mode,
 794         .ndo_start_xmit = hinic_xmit_frame,
 795         .ndo_tx_timeout = hinic_tx_timeout,
 796         .ndo_get_stats64 = hinic_get_stats64,
 797 };
 798
 799 static void netdev_features_init(struct net_device *netdev)
 800 {
 801         netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
 802                               NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
 803                               NETIF_F_RXCSUM;
 804
 805         netdev->vlan_features = netdev->hw_features;
 806
 807         netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
 808 }
 809
 810 /**
 811  * link_status_event_handler - link event handler
 812  * @handle: nic device for the handler
 813  * @buf_in: input buffer
 814  * @in_size: input size
 815  * @buf_in: output buffer
 816  * @out_size: returned output size
 817  *
 818  * Return 0 - Success, negative - Failure
 819  **/
 820 static void link_status_event_handler(void *handle, void *buf_in, u16 in_size,
 821                                       void *buf_out, u16 *out_size)
 822 {
 823         struct hinic_port_link_status *link_status, *ret_link_status;
 824         struct hinic_dev *nic_dev = handle;
 825
 826         link_status = buf_in;
 827
 828         if (link_status->link == HINIC_LINK_STATE_UP) {
 829                 down(&nic_dev->mgmt_lock);
 830
 831                 nic_dev->flags |= HINIC_LINK_UP;
 832
 833                 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
 834                     (HINIC_LINK_UP | HINIC_INTF_UP)) {
 835                         netif_carrier_on(nic_dev->netdev);
 836                         netif_tx_wake_all_queues(nic_dev->netdev);
 837                 }
 838
 839                 up(&nic_dev->mgmt_lock);
 840
 841                 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n");
 842         } else {
 843                 down(&nic_dev->mgmt_lock);
 844
 845                 nic_dev->flags &= ~HINIC_LINK_UP;
 846
 847                 netif_carrier_off(nic_dev->netdev);
 848                 netif_tx_disable(nic_dev->netdev);
 849
 850                 up(&nic_dev->mgmt_lock);
 851
 852                 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n");
 853         }
 854
 855         ret_link_status = buf_out;
 856         ret_link_status->status = 0;
 857
 858         *out_size = sizeof(*ret_link_status);
 859 }
 860
 861 static int set_features(struct hinic_dev *nic_dev,
 862                         netdev_features_t pre_features,
 863                         netdev_features_t features, bool force_change)
 864 {
 865         netdev_features_t changed = force_change ? ~0 : pre_features ^ features;
 866         u32 csum_en = HINIC_RX_CSUM_OFFLOAD_EN;
 867         int err = 0;
 868
 869         if (changed & NETIF_F_TSO)
 870                 err = hinic_port_set_tso(nic_dev, (features & NETIF_F_TSO) ?
 871                                          HINIC_TSO_ENABLE : HINIC_TSO_DISABLE);
 872
 873         if (changed & NETIF_F_RXCSUM)
 874                 err = hinic_set_rx_csum_offload(nic_dev, csum_en);
 875
 876         return err;
 877 }
 878
 879 /**
 880  * nic_dev_init - Initialize the NIC device
 881  * @pdev: the NIC pci device
 882  *
 883  * Return 0 - Success, negative - Failure
 884  **/
 885 static int nic_dev_init(struct pci_dev *pdev)
 886 {
 887         struct hinic_rx_mode_work *rx_mode_work;
 888         struct hinic_txq_stats *tx_stats;
 889         struct hinic_rxq_stats *rx_stats;
 890         struct hinic_dev *nic_dev;
 891         struct net_device *netdev;
 892         struct hinic_hwdev *hwdev;
 893         int err, num_qps;
 894
 895         hwdev = hinic_init_hwdev(pdev);
 896         if (IS_ERR(hwdev)) {
 897                 dev_err(&pdev->dev, "Failed to initialize HW device\n");
 898                 return PTR_ERR(hwdev);
 899         }
 900
 901         num_qps = hinic_hwdev_num_qps(hwdev);
 902         if (num_qps <= 0) {
 903                 dev_err(&pdev->dev, "Invalid number of QPS\n");
 904                 err = -EINVAL;
 905                 goto err_num_qps;
 906         }
 907
 908         netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps);
 909         if (!netdev) {
 910                 dev_err(&pdev->dev, "Failed to allocate Ethernet device\n");
 911                 err = -ENOMEM;
 912                 goto err_alloc_etherdev;
 913         }
 914
 915         netdev->netdev_ops = &hinic_netdev_ops;
 916         netdev->ethtool_ops = &hinic_ethtool_ops;
 917         netdev->max_mtu = ETH_MAX_MTU;
 918
 919         nic_dev = netdev_priv(netdev);
 920         nic_dev->netdev = netdev;
 921         nic_dev->hwdev  = hwdev;
 922         nic_dev->msg_enable = MSG_ENABLE_DEFAULT;
 923         nic_dev->flags = 0;
 924         nic_dev->txqs = NULL;
 925         nic_dev->rxqs = NULL;
 926         nic_dev->tx_weight = tx_weight;
 927         nic_dev->rx_weight = rx_weight;
 928
 929         sema_init(&nic_dev->mgmt_lock, 1);
 930
 931         tx_stats = &nic_dev->tx_stats;
 932         rx_stats = &nic_dev->rx_stats;
 933
 934         u64_stats_init(&tx_stats->syncp);
 935         u64_stats_init(&rx_stats->syncp);
 936
 937         nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev,
 938                                             VLAN_BITMAP_SIZE(nic_dev),
 939                                             GFP_KERNEL);
 940         if (!nic_dev->vlan_bitmap) {
 941                 err = -ENOMEM;
 942                 goto err_vlan_bitmap;
 943         }
 944
 945         nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME);
 946         if (!nic_dev->workq) {
 947                 err = -ENOMEM;
 948                 goto err_workq;
 949         }
 950
 951         pci_set_drvdata(pdev, netdev);
 952
 953         err = hinic_port_get_mac(nic_dev, netdev->dev_addr);
 954         if (err)
 955                 dev_warn(&pdev->dev, "Failed to get mac address\n");
 956
 957         err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0);
 958         if (err) {
 959                 dev_err(&pdev->dev, "Failed to add mac\n");
 960                 goto err_add_mac;
 961         }
 962
 963         err = hinic_port_set_mtu(nic_dev, netdev->mtu);
 964         if (err) {
 965                 dev_err(&pdev->dev, "Failed to set mtu\n");
 966                 goto err_set_mtu;
 967         }
 968
 969         rx_mode_work = &nic_dev->rx_mode_work;
 970         INIT_WORK(&rx_mode_work->work, set_rx_mode);
 971
 972         netdev_features_init(netdev);
 973
 974         netif_carrier_off(netdev);
 975
 976         hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
 977                                 nic_dev, link_status_event_handler);
 978
 979         err = set_features(nic_dev, 0, nic_dev->netdev->features, true);
 980         if (err)
 981                 goto err_set_features;
 982
 983         SET_NETDEV_DEV(netdev, &pdev->dev);
 984
 985         err = register_netdev(netdev);
 986         if (err) {
 987                 dev_err(&pdev->dev, "Failed to register netdev\n");
 988                 goto err_reg_netdev;
 989         }
 990
 991         return 0;
 992
 993 err_reg_netdev:
 994 err_set_features:
 995         hinic_hwdev_cb_unregister(nic_dev->hwdev,
 996                                   HINIC_MGMT_MSG_CMD_LINK_STATUS);
 997         cancel_work_sync(&rx_mode_work->work);
 998
 999 err_set_mtu:
1000 err_add_mac:
1001         pci_set_drvdata(pdev, NULL);
1002         destroy_workqueue(nic_dev->workq);
1003
1004 err_workq:
1005 err_vlan_bitmap:
1006         free_netdev(netdev);
1007
1008 err_alloc_etherdev:
1009 err_num_qps:
1010         hinic_free_hwdev(hwdev);
1011         return err;
1012 }
1013
1014 static int hinic_probe(struct pci_dev *pdev,
1015                        const struct pci_device_id *id)
1016 {
1017         int err = pci_enable_device(pdev);
1018
1019         if (err) {
1020                 dev_err(&pdev->dev, "Failed to enable PCI device\n");
1021                 return err;
1022         }
1023
1024         err = pci_request_regions(pdev, HINIC_DRV_NAME);
1025         if (err) {
1026                 dev_err(&pdev->dev, "Failed to request PCI regions\n");
1027                 goto err_pci_regions;
1028         }
1029
1030         pci_set_master(pdev);
1031
1032         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1033         if (err) {
1034                 dev_warn(&pdev->dev, "Couldn't set 64-bit DMA mask\n");
1035                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1036                 if (err) {
1037                         dev_err(&pdev->dev, "Failed to set DMA mask\n");
1038                         goto err_dma_mask;
1039                 }
1040         }
1041
1042         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1043         if (err) {
1044                 dev_warn(&pdev->dev,
1045                          "Couldn't set 64-bit consistent DMA mask\n");
1046                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1047                 if (err) {
1048                         dev_err(&pdev->dev,
1049                                 "Failed to set consistent DMA mask\n");
1050                         goto err_dma_consistent_mask;
1051                 }
1052         }
1053
1054         err = nic_dev_init(pdev);
1055         if (err) {
1056                 dev_err(&pdev->dev, "Failed to initialize NIC device\n");
1057                 goto err_nic_dev_init;
1058         }
1059
1060         dev_info(&pdev->dev, "HiNIC driver - probed\n");
1061         return 0;
1062
1063 err_nic_dev_init:
1064 err_dma_consistent_mask:
1065 err_dma_mask:
1066         pci_release_regions(pdev);
1067
1068 err_pci_regions:
1069         pci_disable_device(pdev);
1070         return err;
1071 }
1072
1073 static void hinic_remove(struct pci_dev *pdev)
1074 {
1075         struct net_device *netdev = pci_get_drvdata(pdev);
1076         struct hinic_dev *nic_dev = netdev_priv(netdev);
1077         struct hinic_rx_mode_work *rx_mode_work;
1078
1079         unregister_netdev(netdev);
1080
1081         hinic_hwdev_cb_unregister(nic_dev->hwdev,
1082                                   HINIC_MGMT_MSG_CMD_LINK_STATUS);
1083
1084         rx_mode_work = &nic_dev->rx_mode_work;
1085         cancel_work_sync(&rx_mode_work->work);
1086
1087         pci_set_drvdata(pdev, NULL);
1088
1089         destroy_workqueue(nic_dev->workq);
1090
1091         hinic_free_hwdev(nic_dev->hwdev);
1092
1093         free_netdev(netdev);
1094
1095         pci_release_regions(pdev);
1096         pci_disable_device(pdev);
1097
1098         dev_info(&pdev->dev, "HiNIC driver - removed\n");
1099 }
1100
1101 static void hinic_shutdown(struct pci_dev *pdev)
1102 {
1103         pci_disable_device(pdev);
1104 }
1105
1106 static const struct pci_device_id hinic_pci_table[] = {
1107         { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE), 0},
1108         { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE), 0},
1109         { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ), 0},
1110         { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ), 0},
1111         { 0, 0}
1112 };
1113 MODULE_DEVICE_TABLE(pci, hinic_pci_table);
1114
1115 static struct pci_driver hinic_driver = {
1116         .name           = HINIC_DRV_NAME,
1117         .id_table       = hinic_pci_table,
1118         .probe          = hinic_probe,
1119         .remove         = hinic_remove,
1120         .shutdown       = hinic_shutdown,
1121 };
1122
1123 module_pci_driver(hinic_driver);