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

   1 /*
   2  * Huawei HiNIC PCI Express Linux driver
   3  * Copyright(c) 2017 Huawei Technologies Co., Ltd
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * for more details.
  13  *
  14  */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/module.h>
  18 #include <linux/moduleparam.h>
  19 #include <linux/pci.h>
  20 #include <linux/device.h>
  21 #include <linux/errno.h>
  22 #include <linux/types.h>
  23 #include <linux/etherdevice.h>
  24 #include <linux/netdevice.h>
  25 #include <linux/slab.h>
  26 #include <linux/if_vlan.h>
  27 #include <linux/semaphore.h>
  28 #include <linux/workqueue.h>
  29 #include <net/ip.h>
  30 #include <linux/bitops.h>
  31 #include <linux/bitmap.h>
  32 #include <linux/delay.h>
  33 #include <linux/err.h>
  34
  35 #include "hinic_hw_qp.h"
  36 #include "hinic_hw_dev.h"
  37 #include "hinic_port.h"
  38 #include "hinic_tx.h"
  39 #include "hinic_rx.h"
  40 #include "hinic_dev.h"
  41
  42 MODULE_AUTHOR("Huawei Technologies CO., Ltd");
  43 MODULE_DESCRIPTION("Huawei Intelligent NIC driver");
  44 MODULE_LICENSE("GPL");
  45
  46 static unsigned int tx_weight = 64;
  47 module_param(tx_weight, uint, 0644);
  48 MODULE_PARM_DESC(tx_weight, "Number Tx packets for NAPI budget (default=64)");
  49
  50 static unsigned int rx_weight = 64;
  51 module_param(rx_weight, uint, 0644);
  52 MODULE_PARM_DESC(rx_weight, "Number Rx packets for NAPI budget (default=64)");
  53
  54 #define HINIC_DEV_ID_QUAD_PORT_25GE     0x1822
  55 #define HINIC_DEV_ID_DUAL_PORT_25GE     0x0200
  56 #define HINIC_DEV_ID_DUAL_PORT_100GE    0x0201
  57
  58 #define HINIC_WQ_NAME                   "hinic_dev"
  59
  60 #define MSG_ENABLE_DEFAULT              (NETIF_MSG_DRV | NETIF_MSG_PROBE | \
  61                                          NETIF_MSG_IFUP |                  \
  62                                          NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR)
  63
  64 #define VLAN_BITMAP_SIZE(nic_dev)       (ALIGN(VLAN_N_VID, 8) / 8)
  65
  66 #define work_to_rx_mode_work(work)      \
  67                 container_of(work, struct hinic_rx_mode_work, work)
  68
  69 #define rx_mode_work_to_nic_dev(rx_mode_work) \
  70                 container_of(rx_mode_work, struct hinic_dev, rx_mode_work)
  71
  72 static int change_mac_addr(struct net_device *netdev, const u8 *addr);
  73
  74 static void set_link_speed(struct ethtool_link_ksettings *link_ksettings,
  75                            enum hinic_speed speed)
  76 {
  77         switch (speed) {
  78         case HINIC_SPEED_10MB_LINK:
  79                 link_ksettings->base.speed = SPEED_10;
  80                 break;
  81
  82         case HINIC_SPEED_100MB_LINK:
  83                 link_ksettings->base.speed = SPEED_100;
  84                 break;
  85
  86         case HINIC_SPEED_1000MB_LINK:
  87                 link_ksettings->base.speed = SPEED_1000;
  88                 break;
  89
  90         case HINIC_SPEED_10GB_LINK:
  91                 link_ksettings->base.speed = SPEED_10000;
  92                 break;
  93
  94         case HINIC_SPEED_25GB_LINK:
  95                 link_ksettings->base.speed = SPEED_25000;
  96                 break;
  97
  98         case HINIC_SPEED_40GB_LINK:
  99                 link_ksettings->base.speed = SPEED_40000;
 100                 break;
 101
 102         case HINIC_SPEED_100GB_LINK:
 103                 link_ksettings->base.speed = SPEED_100000;
 104                 break;
 105
 106         default:
 107                 link_ksettings->base.speed = SPEED_UNKNOWN;
 108                 break;
 109         }
 110 }
 111
 112 static int hinic_get_link_ksettings(struct net_device *netdev,
 113                                     struct ethtool_link_ksettings
 114                                     *link_ksettings)
 115 {
 116         struct hinic_dev *nic_dev = netdev_priv(netdev);
 117         enum hinic_port_link_state link_state;
 118         struct hinic_port_cap port_cap;
 119         int err;
 120
 121         ethtool_link_ksettings_zero_link_mode(link_ksettings, advertising);
 122         ethtool_link_ksettings_add_link_mode(link_ksettings, supported,
 123                                              Autoneg);
 124
 125         link_ksettings->base.speed   = SPEED_UNKNOWN;
 126         link_ksettings->base.autoneg = AUTONEG_DISABLE;
 127         link_ksettings->base.duplex  = DUPLEX_UNKNOWN;
 128
 129         err = hinic_port_get_cap(nic_dev, &port_cap);
 130         if (err) {
 131                 netif_err(nic_dev, drv, netdev,
 132                           "Failed to get port capabilities\n");
 133                 return err;
 134         }
 135
 136         err = hinic_port_link_state(nic_dev, &link_state);
 137         if (err) {
 138                 netif_err(nic_dev, drv, netdev,
 139                           "Failed to get port link state\n");
 140                 return err;
 141         }
 142
 143         if (link_state != HINIC_LINK_STATE_UP) {
 144                 netif_info(nic_dev, drv, netdev, "No link\n");
 145                 return err;
 146         }
 147
 148         set_link_speed(link_ksettings, port_cap.speed);
 149
 150         if (!!(port_cap.autoneg_cap & HINIC_AUTONEG_SUPPORTED))
 151                 ethtool_link_ksettings_add_link_mode(link_ksettings,
 152                                                      advertising, Autoneg);
 153
 154         if (port_cap.autoneg_state == HINIC_AUTONEG_ACTIVE)
 155                 link_ksettings->base.autoneg = AUTONEG_ENABLE;
 156
 157         link_ksettings->base.duplex = (port_cap.duplex == HINIC_DUPLEX_FULL) ?
 158                                        DUPLEX_FULL : DUPLEX_HALF;
 159         return 0;
 160 }
 161
 162 static void hinic_get_drvinfo(struct net_device *netdev,
 163                               struct ethtool_drvinfo *info)
 164 {
 165         struct hinic_dev *nic_dev = netdev_priv(netdev);
 166         struct hinic_hwdev *hwdev = nic_dev->hwdev;
 167         struct hinic_hwif *hwif = hwdev->hwif;
 168
 169         strlcpy(info->driver, HINIC_DRV_NAME, sizeof(info->driver));
 170         strlcpy(info->bus_info, pci_name(hwif->pdev), sizeof(info->bus_info));
 171 }
 172
 173 static void hinic_get_ringparam(struct net_device *netdev,
 174                                 struct ethtool_ringparam *ring)
 175 {
 176         ring->rx_max_pending = HINIC_RQ_DEPTH;
 177         ring->tx_max_pending = HINIC_SQ_DEPTH;
 178         ring->rx_pending = HINIC_RQ_DEPTH;
 179         ring->tx_pending = HINIC_SQ_DEPTH;
 180 }
 181
 182 static void hinic_get_channels(struct net_device *netdev,
 183                                struct ethtool_channels *channels)
 184 {
 185         struct hinic_dev *nic_dev = netdev_priv(netdev);
 186         struct hinic_hwdev *hwdev = nic_dev->hwdev;
 187
 188         channels->max_rx = hwdev->nic_cap.max_qps;
 189         channels->max_tx = hwdev->nic_cap.max_qps;
 190         channels->max_other    = 0;
 191         channels->max_combined = 0;
 192         channels->rx_count = hinic_hwdev_num_qps(hwdev);
 193         channels->tx_count = hinic_hwdev_num_qps(hwdev);
 194         channels->other_count    = 0;
 195         channels->combined_count = 0;
 196 }
 197
 198 static const struct ethtool_ops hinic_ethtool_ops = {
 199         .get_link_ksettings = hinic_get_link_ksettings,
 200         .get_drvinfo = hinic_get_drvinfo,
 201         .get_link = ethtool_op_get_link,
 202         .get_ringparam = hinic_get_ringparam,
 203         .get_channels = hinic_get_channels,
 204 };
 205
 206 static void update_rx_stats(struct hinic_dev *nic_dev, struct hinic_rxq *rxq)
 207 {
 208         struct hinic_rxq_stats *nic_rx_stats = &nic_dev->rx_stats;
 209         struct hinic_rxq_stats rx_stats;
 210
 211         u64_stats_init(&rx_stats.syncp);
 212
 213         hinic_rxq_get_stats(rxq, &rx_stats);
 214
 215         u64_stats_update_begin(&nic_rx_stats->syncp);
 216         nic_rx_stats->bytes += rx_stats.bytes;
 217         nic_rx_stats->pkts  += rx_stats.pkts;
 218         u64_stats_update_end(&nic_rx_stats->syncp);
 219
 220         hinic_rxq_clean_stats(rxq);
 221 }
 222
 223 static void update_tx_stats(struct hinic_dev *nic_dev, struct hinic_txq *txq)
 224 {
 225         struct hinic_txq_stats *nic_tx_stats = &nic_dev->tx_stats;
 226         struct hinic_txq_stats tx_stats;
 227
 228         u64_stats_init(&tx_stats.syncp);
 229
 230         hinic_txq_get_stats(txq, &tx_stats);
 231
 232         u64_stats_update_begin(&nic_tx_stats->syncp);
 233         nic_tx_stats->bytes += tx_stats.bytes;
 234         nic_tx_stats->pkts += tx_stats.pkts;
 235         nic_tx_stats->tx_busy += tx_stats.tx_busy;
 236         nic_tx_stats->tx_wake += tx_stats.tx_wake;
 237         nic_tx_stats->tx_dropped += tx_stats.tx_dropped;
 238         u64_stats_update_end(&nic_tx_stats->syncp);
 239
 240         hinic_txq_clean_stats(txq);
 241 }
 242
 243 static void update_nic_stats(struct hinic_dev *nic_dev)
 244 {
 245         int i, num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
 246
 247         for (i = 0; i < num_qps; i++)
 248                 update_rx_stats(nic_dev, &nic_dev->rxqs[i]);
 249
 250         for (i = 0; i < num_qps; i++)
 251                 update_tx_stats(nic_dev, &nic_dev->txqs[i]);
 252 }
 253
 254 /**
 255  * create_txqs - Create the Logical Tx Queues of specific NIC device
 256  * @nic_dev: the specific NIC device
 257  *
 258  * Return 0 - Success, negative - Failure
 259  **/
 260 static int create_txqs(struct hinic_dev *nic_dev)
 261 {
 262         int err, i, j, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 263         struct net_device *netdev = nic_dev->netdev;
 264         size_t txq_size;
 265
 266         if (nic_dev->txqs)
 267                 return -EINVAL;
 268
 269         txq_size = num_txqs * sizeof(*nic_dev->txqs);
 270         nic_dev->txqs = devm_kzalloc(&netdev->dev, txq_size, GFP_KERNEL);
 271         if (!nic_dev->txqs)
 272                 return -ENOMEM;
 273
 274         for (i = 0; i < num_txqs; i++) {
 275                 struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i);
 276
 277                 err = hinic_init_txq(&nic_dev->txqs[i], sq, netdev);
 278                 if (err) {
 279                         netif_err(nic_dev, drv, netdev,
 280                                   "Failed to init Txq\n");
 281                         goto err_init_txq;
 282                 }
 283         }
 284
 285         return 0;
 286
 287 err_init_txq:
 288         for (j = 0; j < i; j++)
 289                 hinic_clean_txq(&nic_dev->txqs[j]);
 290
 291         devm_kfree(&netdev->dev, nic_dev->txqs);
 292         return err;
 293 }
 294
 295 /**
 296  * free_txqs - Free the Logical Tx Queues of specific NIC device
 297  * @nic_dev: the specific NIC device
 298  **/
 299 static void free_txqs(struct hinic_dev *nic_dev)
 300 {
 301         int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 302         struct net_device *netdev = nic_dev->netdev;
 303
 304         if (!nic_dev->txqs)
 305                 return;
 306
 307         for (i = 0; i < num_txqs; i++)
 308                 hinic_clean_txq(&nic_dev->txqs[i]);
 309
 310         devm_kfree(&netdev->dev, nic_dev->txqs);
 311         nic_dev->txqs = NULL;
 312 }
 313
 314 /**
 315  * create_txqs - Create the Logical Rx Queues of specific NIC device
 316  * @nic_dev: the specific NIC device
 317  *
 318  * Return 0 - Success, negative - Failure
 319  **/
 320 static int create_rxqs(struct hinic_dev *nic_dev)
 321 {
 322         int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 323         struct net_device *netdev = nic_dev->netdev;
 324         size_t rxq_size;
 325
 326         if (nic_dev->rxqs)
 327                 return -EINVAL;
 328
 329         rxq_size = num_rxqs * sizeof(*nic_dev->rxqs);
 330         nic_dev->rxqs = devm_kzalloc(&netdev->dev, rxq_size, GFP_KERNEL);
 331         if (!nic_dev->rxqs)
 332                 return -ENOMEM;
 333
 334         for (i = 0; i < num_rxqs; i++) {
 335                 struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
 336
 337                 err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev);
 338                 if (err) {
 339                         netif_err(nic_dev, drv, netdev,
 340                                   "Failed to init rxq\n");
 341                         goto err_init_rxq;
 342                 }
 343         }
 344
 345         return 0;
 346
 347 err_init_rxq:
 348         for (j = 0; j < i; j++)
 349                 hinic_clean_rxq(&nic_dev->rxqs[j]);
 350
 351         devm_kfree(&netdev->dev, nic_dev->rxqs);
 352         return err;
 353 }
 354
 355 /**
 356  * free_txqs - Free the Logical Rx Queues of specific NIC device
 357  * @nic_dev: the specific NIC device
 358  **/
 359 static void free_rxqs(struct hinic_dev *nic_dev)
 360 {
 361         int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 362         struct net_device *netdev = nic_dev->netdev;
 363
 364         if (!nic_dev->rxqs)
 365                 return;
 366
 367         for (i = 0; i < num_rxqs; i++)
 368                 hinic_clean_rxq(&nic_dev->rxqs[i]);
 369
 370         devm_kfree(&netdev->dev, nic_dev->rxqs);
 371         nic_dev->rxqs = NULL;
 372 }
 373
 374 static int hinic_open(struct net_device *netdev)
 375 {
 376         struct hinic_dev *nic_dev = netdev_priv(netdev);
 377         enum hinic_port_link_state link_state;
 378         int err, ret, num_qps;
 379
 380         if (!(nic_dev->flags & HINIC_INTF_UP)) {
 381                 err = hinic_hwdev_ifup(nic_dev->hwdev);
 382                 if (err) {
 383                         netif_err(nic_dev, drv, netdev,
 384                                   "Failed - HW interface up\n");
 385                         return err;
 386                 }
 387         }
 388
 389         err = create_txqs(nic_dev);
 390         if (err) {
 391                 netif_err(nic_dev, drv, netdev,
 392                           "Failed to create Tx queues\n");
 393                 goto err_create_txqs;
 394         }
 395
 396         err = create_rxqs(nic_dev);
 397         if (err) {
 398                 netif_err(nic_dev, drv, netdev,
 399                           "Failed to create Rx queues\n");
 400                 goto err_create_rxqs;
 401         }
 402
 403         num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
 404         netif_set_real_num_tx_queues(netdev, num_qps);
 405         netif_set_real_num_rx_queues(netdev, num_qps);
 406
 407         err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE);
 408         if (err) {
 409                 netif_err(nic_dev, drv, netdev,
 410                           "Failed to set port state\n");
 411                 goto err_port_state;
 412         }
 413
 414         err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE);
 415         if (err) {
 416                 netif_err(nic_dev, drv, netdev,
 417                           "Failed to set func port state\n");
 418                 goto err_func_port_state;
 419         }
 420
 421         /* Wait up to 3 sec between port enable to link state */
 422         msleep(3000);
 423
 424         down(&nic_dev->mgmt_lock);
 425
 426         err = hinic_port_link_state(nic_dev, &link_state);
 427         if (err) {
 428                 netif_err(nic_dev, drv, netdev, "Failed to get link state\n");
 429                 goto err_port_link;
 430         }
 431
 432         if (link_state == HINIC_LINK_STATE_UP)
 433                 nic_dev->flags |= HINIC_LINK_UP;
 434
 435         nic_dev->flags |= HINIC_INTF_UP;
 436
 437         if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
 438             (HINIC_LINK_UP | HINIC_INTF_UP)) {
 439                 netif_info(nic_dev, drv, netdev, "link + intf UP\n");
 440                 netif_carrier_on(netdev);
 441                 netif_tx_wake_all_queues(netdev);
 442         }
 443
 444         up(&nic_dev->mgmt_lock);
 445
 446         netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n");
 447         return 0;
 448
 449 err_port_link:
 450         up(&nic_dev->mgmt_lock);
 451         ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
 452         if (ret)
 453                 netif_warn(nic_dev, drv, netdev,
 454                            "Failed to revert func port state\n");
 455
 456 err_func_port_state:
 457         ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
 458         if (ret)
 459                 netif_warn(nic_dev, drv, netdev,
 460                            "Failed to revert port state\n");
 461
 462 err_port_state:
 463         free_rxqs(nic_dev);
 464
 465 err_create_rxqs:
 466         free_txqs(nic_dev);
 467
 468 err_create_txqs:
 469         if (!(nic_dev->flags & HINIC_INTF_UP))
 470                 hinic_hwdev_ifdown(nic_dev->hwdev);
 471         return err;
 472 }
 473
 474 static int hinic_close(struct net_device *netdev)
 475 {
 476         struct hinic_dev *nic_dev = netdev_priv(netdev);
 477         unsigned int flags;
 478         int err;
 479
 480         down(&nic_dev->mgmt_lock);
 481
 482         flags = nic_dev->flags;
 483         nic_dev->flags &= ~HINIC_INTF_UP;
 484
 485         netif_carrier_off(netdev);
 486         netif_tx_disable(netdev);
 487
 488         update_nic_stats(nic_dev);
 489
 490         up(&nic_dev->mgmt_lock);
 491
 492         err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
 493         if (err) {
 494                 netif_err(nic_dev, drv, netdev,
 495                           "Failed to set func port state\n");
 496                 nic_dev->flags |= (flags & HINIC_INTF_UP);
 497                 return err;
 498         }
 499
 500         err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
 501         if (err) {
 502                 netif_err(nic_dev, drv, netdev, "Failed to set port state\n");
 503                 nic_dev->flags |= (flags & HINIC_INTF_UP);
 504                 return err;
 505         }
 506
 507         free_rxqs(nic_dev);
 508         free_txqs(nic_dev);
 509
 510         if (flags & HINIC_INTF_UP)
 511                 hinic_hwdev_ifdown(nic_dev->hwdev);
 512
 513         netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n");
 514         return 0;
 515 }
 516
 517 static int hinic_change_mtu(struct net_device *netdev, int new_mtu)
 518 {
 519         struct hinic_dev *nic_dev = netdev_priv(netdev);
 520         int err;
 521
 522         netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu);
 523
 524         err = hinic_port_set_mtu(nic_dev, new_mtu);
 525         if (err)
 526                 netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n");
 527         else
 528                 netdev->mtu = new_mtu;
 529
 530         return err;
 531 }
 532
 533 /**
 534  * change_mac_addr - change the main mac address of network device
 535  * @netdev: network device
 536  * @addr: mac address to set
 537  *
 538  * Return 0 - Success, negative - Failure
 539  **/
 540 static int change_mac_addr(struct net_device *netdev, const u8 *addr)
 541 {
 542         struct hinic_dev *nic_dev = netdev_priv(netdev);
 543         u16 vid = 0;
 544         int err;
 545
 546         if (!is_valid_ether_addr(addr))
 547                 return -EADDRNOTAVAIL;
 548
 549         netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n",
 550                    addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 551
 552         down(&nic_dev->mgmt_lock);
 553
 554         do {
 555                 err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid);
 556                 if (err) {
 557                         netif_err(nic_dev, drv, netdev,
 558                                   "Failed to delete mac\n");
 559                         break;
 560                 }
 561
 562                 err = hinic_port_add_mac(nic_dev, addr, vid);
 563                 if (err) {
 564                         netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
 565                         break;
 566                 }
 567
 568                 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
 569         } while (vid != VLAN_N_VID);
 570
 571         up(&nic_dev->mgmt_lock);
 572         return err;
 573 }
 574
 575 static int hinic_set_mac_addr(struct net_device *netdev, void *addr)
 576 {
 577         unsigned char new_mac[ETH_ALEN];
 578         struct sockaddr *saddr = addr;
 579         int err;
 580
 581         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 582
 583         err = change_mac_addr(netdev, new_mac);
 584         if (!err)
 585                 memcpy(netdev->dev_addr, new_mac, ETH_ALEN);
 586
 587         return err;
 588 }
 589
 590 /**
 591  * add_mac_addr - add mac address to network device
 592  * @netdev: network device
 593  * @addr: mac address to add
 594  *
 595  * Return 0 - Success, negative - Failure
 596  **/
 597 static int add_mac_addr(struct net_device *netdev, const u8 *addr)
 598 {
 599         struct hinic_dev *nic_dev = netdev_priv(netdev);
 600         u16 vid = 0;
 601         int err;
 602
 603         if (!is_valid_ether_addr(addr))
 604                 return -EADDRNOTAVAIL;
 605
 606         netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n",
 607                    addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 608
 609         down(&nic_dev->mgmt_lock);
 610
 611         do {
 612                 err = hinic_port_add_mac(nic_dev, addr, vid);
 613                 if (err) {
 614                         netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
 615                         break;
 616                 }
 617
 618                 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
 619         } while (vid != VLAN_N_VID);
 620
 621         up(&nic_dev->mgmt_lock);
 622         return err;
 623 }
 624
 625 /**
 626  * remove_mac_addr - remove mac address from network device
 627  * @netdev: network device
 628  * @addr: mac address to remove
 629  *
 630  * Return 0 - Success, negative - Failure
 631  **/
 632 static int remove_mac_addr(struct net_device *netdev, const u8 *addr)
 633 {
 634         struct hinic_dev *nic_dev = netdev_priv(netdev);
 635         u16 vid = 0;
 636         int err;
 637
 638         if (!is_valid_ether_addr(addr))
 639                 return -EADDRNOTAVAIL;
 640
 641         netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n",
 642                    addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 643
 644         down(&nic_dev->mgmt_lock);
 645
 646         do {
 647                 err = hinic_port_del_mac(nic_dev, addr, vid);
 648                 if (err) {
 649                         netif_err(nic_dev, drv, netdev,
 650                                   "Failed to delete mac\n");
 651                         break;
 652                 }
 653
 654                 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
 655         } while (vid != VLAN_N_VID);
 656
 657         up(&nic_dev->mgmt_lock);
 658         return err;
 659 }
 660
 661 static int hinic_vlan_rx_add_vid(struct net_device *netdev,
 662                                  __always_unused __be16 proto, u16 vid)
 663 {
 664         struct hinic_dev *nic_dev = netdev_priv(netdev);
 665         int ret, err;
 666
 667         netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid);
 668
 669         down(&nic_dev->mgmt_lock);
 670
 671         err = hinic_port_add_vlan(nic_dev, vid);
 672         if (err) {
 673                 netif_err(nic_dev, drv, netdev, "Failed to add vlan\n");
 674                 goto err_vlan_add;
 675         }
 676
 677         err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid);
 678         if (err) {
 679                 netif_err(nic_dev, drv, netdev, "Failed to set mac\n");
 680                 goto err_add_mac;
 681         }
 682
 683         bitmap_set(nic_dev->vlan_bitmap, vid, 1);
 684
 685         up(&nic_dev->mgmt_lock);
 686         return 0;
 687
 688 err_add_mac:
 689         ret = hinic_port_del_vlan(nic_dev, vid);
 690         if (ret)
 691                 netif_err(nic_dev, drv, netdev,
 692                           "Failed to revert by removing vlan\n");
 693
 694 err_vlan_add:
 695         up(&nic_dev->mgmt_lock);
 696         return err;
 697 }
 698
 699 static int hinic_vlan_rx_kill_vid(struct net_device *netdev,
 700                                   __always_unused __be16 proto, u16 vid)
 701 {
 702         struct hinic_dev *nic_dev = netdev_priv(netdev);
 703         int err;
 704
 705         netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid);
 706
 707         down(&nic_dev->mgmt_lock);
 708
 709         err = hinic_port_del_vlan(nic_dev, vid);
 710         if (err) {
 711                 netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n");
 712                 goto err_del_vlan;
 713         }
 714
 715         bitmap_clear(nic_dev->vlan_bitmap, vid, 1);
 716
 717         up(&nic_dev->mgmt_lock);
 718         return 0;
 719
 720 err_del_vlan:
 721         up(&nic_dev->mgmt_lock);
 722         return err;
 723 }
 724
 725 static void set_rx_mode(struct work_struct *work)
 726 {
 727         struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work);
 728         struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work);
 729
 730         netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n");
 731
 732         hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode);
 733
 734         __dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
 735         __dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
 736 }
 737
 738 static void hinic_set_rx_mode(struct net_device *netdev)
 739 {
 740         struct hinic_dev *nic_dev = netdev_priv(netdev);
 741         struct hinic_rx_mode_work *rx_mode_work;
 742         u32 rx_mode;
 743
 744         rx_mode_work = &nic_dev->rx_mode_work;
 745
 746         rx_mode = HINIC_RX_MODE_UC |
 747                   HINIC_RX_MODE_MC |
 748                   HINIC_RX_MODE_BC;
 749
 750         if (netdev->flags & IFF_PROMISC)
 751                 rx_mode |= HINIC_RX_MODE_PROMISC;
 752         else if (netdev->flags & IFF_ALLMULTI)
 753                 rx_mode |= HINIC_RX_MODE_MC_ALL;
 754
 755         rx_mode_work->rx_mode = rx_mode;
 756
 757         queue_work(nic_dev->workq, &rx_mode_work->work);
 758 }
 759
 760 static void hinic_tx_timeout(struct net_device *netdev)
 761 {
 762         struct hinic_dev *nic_dev = netdev_priv(netdev);
 763
 764         netif_err(nic_dev, drv, netdev, "Tx timeout\n");
 765 }
 766
 767 static void hinic_get_stats64(struct net_device *netdev,
 768                               struct rtnl_link_stats64 *stats)
 769 {
 770         struct hinic_dev *nic_dev = netdev_priv(netdev);
 771         struct hinic_rxq_stats *nic_rx_stats;
 772         struct hinic_txq_stats *nic_tx_stats;
 773
 774         nic_rx_stats = &nic_dev->rx_stats;
 775         nic_tx_stats = &nic_dev->tx_stats;
 776
 777         down(&nic_dev->mgmt_lock);
 778
 779         if (nic_dev->flags & HINIC_INTF_UP)
 780                 update_nic_stats(nic_dev);
 781
 782         up(&nic_dev->mgmt_lock);
 783
 784         stats->rx_bytes   = nic_rx_stats->bytes;
 785         stats->rx_packets = nic_rx_stats->pkts;
 786
 787         stats->tx_bytes   = nic_tx_stats->bytes;
 788         stats->tx_packets = nic_tx_stats->pkts;
 789         stats->tx_errors  = nic_tx_stats->tx_dropped;
 790 }
 791
 792 static const struct net_device_ops hinic_netdev_ops = {
 793         .ndo_open = hinic_open,
 794         .ndo_stop = hinic_close,
 795         .ndo_change_mtu = hinic_change_mtu,
 796         .ndo_set_mac_address = hinic_set_mac_addr,
 797         .ndo_validate_addr = eth_validate_addr,
 798         .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
 799         .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
 800         .ndo_set_rx_mode = hinic_set_rx_mode,
 801         .ndo_start_xmit = hinic_xmit_frame,
 802         .ndo_tx_timeout = hinic_tx_timeout,
 803         .ndo_get_stats64 = hinic_get_stats64,
 804 };
 805
 806 static void netdev_features_init(struct net_device *netdev)
 807 {
 808         netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA;
 809
 810         netdev->vlan_features = netdev->hw_features;
 811
 812         netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
 813 }
 814
 815 /**
 816  * link_status_event_handler - link event handler
 817  * @handle: nic device for the handler
 818  * @buf_in: input buffer
 819  * @in_size: input size
 820  * @buf_in: output buffer
 821  * @out_size: returned output size
 822  *
 823  * Return 0 - Success, negative - Failure
 824  **/
 825 static void link_status_event_handler(void *handle, void *buf_in, u16 in_size,
 826                                       void *buf_out, u16 *out_size)
 827 {
 828         struct hinic_port_link_status *link_status, *ret_link_status;
 829         struct hinic_dev *nic_dev = handle;
 830
 831         link_status = buf_in;
 832
 833         if (link_status->link == HINIC_LINK_STATE_UP) {
 834                 down(&nic_dev->mgmt_lock);
 835
 836                 nic_dev->flags |= HINIC_LINK_UP;
 837
 838                 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
 839                     (HINIC_LINK_UP | HINIC_INTF_UP)) {
 840                         netif_carrier_on(nic_dev->netdev);
 841                         netif_tx_wake_all_queues(nic_dev->netdev);
 842                 }
 843
 844                 up(&nic_dev->mgmt_lock);
 845
 846                 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n");
 847         } else {
 848                 down(&nic_dev->mgmt_lock);
 849
 850                 nic_dev->flags &= ~HINIC_LINK_UP;
 851
 852                 netif_carrier_off(nic_dev->netdev);
 853                 netif_tx_disable(nic_dev->netdev);
 854
 855                 up(&nic_dev->mgmt_lock);
 856
 857                 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n");
 858         }
 859
 860         ret_link_status = buf_out;
 861         ret_link_status->status = 0;
 862
 863         *out_size = sizeof(*ret_link_status);
 864 }
 865
 866 /**
 867  * nic_dev_init - Initialize the NIC device
 868  * @pdev: the NIC pci device
 869  *
 870  * Return 0 - Success, negative - Failure
 871  **/
 872 static int nic_dev_init(struct pci_dev *pdev)
 873 {
 874         struct hinic_rx_mode_work *rx_mode_work;
 875         struct hinic_txq_stats *tx_stats;
 876         struct hinic_rxq_stats *rx_stats;
 877         struct hinic_dev *nic_dev;
 878         struct net_device *netdev;
 879         struct hinic_hwdev *hwdev;
 880         int err, num_qps;
 881
 882         hwdev = hinic_init_hwdev(pdev);
 883         if (IS_ERR(hwdev)) {
 884                 dev_err(&pdev->dev, "Failed to initialize HW device\n");
 885                 return PTR_ERR(hwdev);
 886         }
 887
 888         num_qps = hinic_hwdev_num_qps(hwdev);
 889         if (num_qps <= 0) {
 890                 dev_err(&pdev->dev, "Invalid number of QPS\n");
 891                 err = -EINVAL;
 892                 goto err_num_qps;
 893         }
 894
 895         netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps);
 896         if (!netdev) {
 897                 dev_err(&pdev->dev, "Failed to allocate Ethernet device\n");
 898                 err = -ENOMEM;
 899                 goto err_alloc_etherdev;
 900         }
 901
 902         netdev->netdev_ops = &hinic_netdev_ops;
 903         netdev->ethtool_ops = &hinic_ethtool_ops;
 904         netdev->max_mtu = ETH_MAX_MTU;
 905
 906         nic_dev = netdev_priv(netdev);
 907         nic_dev->netdev = netdev;
 908         nic_dev->hwdev  = hwdev;
 909         nic_dev->msg_enable = MSG_ENABLE_DEFAULT;
 910         nic_dev->flags = 0;
 911         nic_dev->txqs = NULL;
 912         nic_dev->rxqs = NULL;
 913         nic_dev->tx_weight = tx_weight;
 914         nic_dev->rx_weight = rx_weight;
 915
 916         sema_init(&nic_dev->mgmt_lock, 1);
 917
 918         tx_stats = &nic_dev->tx_stats;
 919         rx_stats = &nic_dev->rx_stats;
 920
 921         u64_stats_init(&tx_stats->syncp);
 922         u64_stats_init(&rx_stats->syncp);
 923
 924         nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev,
 925                                             VLAN_BITMAP_SIZE(nic_dev),
 926                                             GFP_KERNEL);
 927         if (!nic_dev->vlan_bitmap) {
 928                 err = -ENOMEM;
 929                 goto err_vlan_bitmap;
 930         }
 931
 932         nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME);
 933         if (!nic_dev->workq) {
 934                 err = -ENOMEM;
 935                 goto err_workq;
 936         }
 937
 938         pci_set_drvdata(pdev, netdev);
 939
 940         err = hinic_port_get_mac(nic_dev, netdev->dev_addr);
 941         if (err)
 942                 dev_warn(&pdev->dev, "Failed to get mac address\n");
 943
 944         err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0);
 945         if (err) {
 946                 dev_err(&pdev->dev, "Failed to add mac\n");
 947                 goto err_add_mac;
 948         }
 949
 950         err = hinic_port_set_mtu(nic_dev, netdev->mtu);
 951         if (err) {
 952                 dev_err(&pdev->dev, "Failed to set mtu\n");
 953                 goto err_set_mtu;
 954         }
 955
 956         rx_mode_work = &nic_dev->rx_mode_work;
 957         INIT_WORK(&rx_mode_work->work, set_rx_mode);
 958
 959         netdev_features_init(netdev);
 960
 961         netif_carrier_off(netdev);
 962
 963         hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
 964                                 nic_dev, link_status_event_handler);
 965
 966         SET_NETDEV_DEV(netdev, &pdev->dev);
 967         err = register_netdev(netdev);
 968         if (err) {
 969                 dev_err(&pdev->dev, "Failed to register netdev\n");
 970                 goto err_reg_netdev;
 971         }
 972
 973         return 0;
 974
 975 err_reg_netdev:
 976         hinic_hwdev_cb_unregister(nic_dev->hwdev,
 977                                   HINIC_MGMT_MSG_CMD_LINK_STATUS);
 978         cancel_work_sync(&rx_mode_work->work);
 979
 980 err_set_mtu:
 981 err_add_mac:
 982         pci_set_drvdata(pdev, NULL);
 983         destroy_workqueue(nic_dev->workq);
 984
 985 err_workq:
 986 err_vlan_bitmap:
 987         free_netdev(netdev);
 988
 989 err_alloc_etherdev:
 990 err_num_qps:
 991         hinic_free_hwdev(hwdev);
 992         return err;
 993 }
 994
 995 static int hinic_probe(struct pci_dev *pdev,
 996                        const struct pci_device_id *id)
 997 {
 998         int err = pci_enable_device(pdev);
 999
1000         if (err) {
1001                 dev_err(&pdev->dev, "Failed to enable PCI device\n");
1002                 return err;
1003         }
1004
1005         err = pci_request_regions(pdev, HINIC_DRV_NAME);
1006         if (err) {
1007                 dev_err(&pdev->dev, "Failed to request PCI regions\n");
1008                 goto err_pci_regions;
1009         }
1010
1011         pci_set_master(pdev);
1012
1013         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1014         if (err) {
1015                 dev_warn(&pdev->dev, "Couldn't set 64-bit DMA mask\n");
1016                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1017                 if (err) {
1018                         dev_err(&pdev->dev, "Failed to set DMA mask\n");
1019                         goto err_dma_mask;
1020                 }
1021         }
1022
1023         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1024         if (err) {
1025                 dev_warn(&pdev->dev,
1026                          "Couldn't set 64-bit consistent DMA mask\n");
1027                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1028                 if (err) {
1029                         dev_err(&pdev->dev,
1030                                 "Failed to set consistent DMA mask\n");
1031                         goto err_dma_consistent_mask;
1032                 }
1033         }
1034
1035         err = nic_dev_init(pdev);
1036         if (err) {
1037                 dev_err(&pdev->dev, "Failed to initialize NIC device\n");
1038                 goto err_nic_dev_init;
1039         }
1040
1041         dev_info(&pdev->dev, "HiNIC driver - probed\n");
1042         return 0;
1043
1044 err_nic_dev_init:
1045 err_dma_consistent_mask:
1046 err_dma_mask:
1047         pci_release_regions(pdev);
1048
1049 err_pci_regions:
1050         pci_disable_device(pdev);
1051         return err;
1052 }
1053
1054 static void hinic_remove(struct pci_dev *pdev)
1055 {
1056         struct net_device *netdev = pci_get_drvdata(pdev);
1057         struct hinic_dev *nic_dev = netdev_priv(netdev);
1058         struct hinic_rx_mode_work *rx_mode_work;
1059
1060         unregister_netdev(netdev);
1061
1062         hinic_hwdev_cb_unregister(nic_dev->hwdev,
1063                                   HINIC_MGMT_MSG_CMD_LINK_STATUS);
1064
1065         rx_mode_work = &nic_dev->rx_mode_work;
1066         cancel_work_sync(&rx_mode_work->work);
1067
1068         pci_set_drvdata(pdev, NULL);
1069
1070         destroy_workqueue(nic_dev->workq);
1071
1072         hinic_free_hwdev(nic_dev->hwdev);
1073
1074         free_netdev(netdev);
1075
1076         pci_release_regions(pdev);
1077         pci_disable_device(pdev);
1078
1079         dev_info(&pdev->dev, "HiNIC driver - removed\n");
1080 }
1081
1082 static const struct pci_device_id hinic_pci_table[] = {
1083         { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE), 0},
1084         { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_25GE), 0},
1085         { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE), 0},
1086         { 0, 0}
1087 };
1088 MODULE_DEVICE_TABLE(pci, hinic_pci_table);
1089
1090 static struct pci_driver hinic_driver = {
1091         .name           = HINIC_DRV_NAME,
1092         .id_table       = hinic_pci_table,
1093         .probe          = hinic_probe,
1094         .remove         = hinic_remove,
1095 };
1096
1097 module_pci_driver(hinic_driver);