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_100GE        0x0200
  56 #define HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ   0x0205
  57 #define HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ    0x0210
  58
  59 #define HINIC_WQ_NAME                   "hinic_dev"
  60
  61 #define MSG_ENABLE_DEFAULT              (NETIF_MSG_DRV | NETIF_MSG_PROBE | \
  62                                          NETIF_MSG_IFUP |                  \
  63                                          NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR)
  64
  65 #define VLAN_BITMAP_SIZE(nic_dev)       (ALIGN(VLAN_N_VID, 8) / 8)
  66
  67 #define work_to_rx_mode_work(work)      \
  68                 container_of(work, struct hinic_rx_mode_work, work)
  69
  70 #define rx_mode_work_to_nic_dev(rx_mode_work) \
  71                 container_of(rx_mode_work, struct hinic_dev, rx_mode_work)
  72
  73 static int change_mac_addr(struct net_device *netdev, const u8 *addr);
  74
  75 static void set_link_speed(struct ethtool_link_ksettings *link_ksettings,
  76                            enum hinic_speed speed)
  77 {
  78         switch (speed) {
  79         case HINIC_SPEED_10MB_LINK:
  80                 link_ksettings->base.speed = SPEED_10;
  81                 break;
  82
  83         case HINIC_SPEED_100MB_LINK:
  84                 link_ksettings->base.speed = SPEED_100;
  85                 break;
  86
  87         case HINIC_SPEED_1000MB_LINK:
  88                 link_ksettings->base.speed = SPEED_1000;
  89                 break;
  90
  91         case HINIC_SPEED_10GB_LINK:
  92                 link_ksettings->base.speed = SPEED_10000;
  93                 break;
  94
  95         case HINIC_SPEED_25GB_LINK:
  96                 link_ksettings->base.speed = SPEED_25000;
  97                 break;
  98
  99         case HINIC_SPEED_40GB_LINK:
 100                 link_ksettings->base.speed = SPEED_40000;
 101                 break;
 102
 103         case HINIC_SPEED_100GB_LINK:
 104                 link_ksettings->base.speed = SPEED_100000;
 105                 break;
 106
 107         default:
 108                 link_ksettings->base.speed = SPEED_UNKNOWN;
 109                 break;
 110         }
 111 }
 112
 113 static int hinic_get_link_ksettings(struct net_device *netdev,
 114                                     struct ethtool_link_ksettings
 115                                     *link_ksettings)
 116 {
 117         struct hinic_dev *nic_dev = netdev_priv(netdev);
 118         enum hinic_port_link_state link_state;
 119         struct hinic_port_cap port_cap;
 120         int err;
 121
 122         ethtool_link_ksettings_zero_link_mode(link_ksettings, advertising);
 123         ethtool_link_ksettings_add_link_mode(link_ksettings, supported,
 124                                              Autoneg);
 125
 126         link_ksettings->base.speed   = SPEED_UNKNOWN;
 127         link_ksettings->base.autoneg = AUTONEG_DISABLE;
 128         link_ksettings->base.duplex  = DUPLEX_UNKNOWN;
 129
 130         err = hinic_port_get_cap(nic_dev, &port_cap);
 131         if (err) {
 132                 netif_err(nic_dev, drv, netdev,
 133                           "Failed to get port capabilities\n");
 134                 return err;
 135         }
 136
 137         err = hinic_port_link_state(nic_dev, &link_state);
 138         if (err) {
 139                 netif_err(nic_dev, drv, netdev,
 140                           "Failed to get port link state\n");
 141                 return err;
 142         }
 143
 144         if (link_state != HINIC_LINK_STATE_UP) {
 145                 netif_info(nic_dev, drv, netdev, "No link\n");
 146                 return err;
 147         }
 148
 149         set_link_speed(link_ksettings, port_cap.speed);
 150
 151         if (!!(port_cap.autoneg_cap & HINIC_AUTONEG_SUPPORTED))
 152                 ethtool_link_ksettings_add_link_mode(link_ksettings,
 153                                                      advertising, Autoneg);
 154
 155         if (port_cap.autoneg_state == HINIC_AUTONEG_ACTIVE)
 156                 link_ksettings->base.autoneg = AUTONEG_ENABLE;
 157
 158         link_ksettings->base.duplex = (port_cap.duplex == HINIC_DUPLEX_FULL) ?
 159                                        DUPLEX_FULL : DUPLEX_HALF;
 160         return 0;
 161 }
 162
 163 static void hinic_get_drvinfo(struct net_device *netdev,
 164                               struct ethtool_drvinfo *info)
 165 {
 166         struct hinic_dev *nic_dev = netdev_priv(netdev);
 167         struct hinic_hwdev *hwdev = nic_dev->hwdev;
 168         struct hinic_hwif *hwif = hwdev->hwif;
 169
 170         strlcpy(info->driver, HINIC_DRV_NAME, sizeof(info->driver));
 171         strlcpy(info->bus_info, pci_name(hwif->pdev), sizeof(info->bus_info));
 172 }
 173
 174 static void hinic_get_ringparam(struct net_device *netdev,
 175                                 struct ethtool_ringparam *ring)
 176 {
 177         ring->rx_max_pending = HINIC_RQ_DEPTH;
 178         ring->tx_max_pending = HINIC_SQ_DEPTH;
 179         ring->rx_pending = HINIC_RQ_DEPTH;
 180         ring->tx_pending = HINIC_SQ_DEPTH;
 181 }
 182
 183 static void hinic_get_channels(struct net_device *netdev,
 184                                struct ethtool_channels *channels)
 185 {
 186         struct hinic_dev *nic_dev = netdev_priv(netdev);
 187         struct hinic_hwdev *hwdev = nic_dev->hwdev;
 188
 189         channels->max_rx = hwdev->nic_cap.max_qps;
 190         channels->max_tx = hwdev->nic_cap.max_qps;
 191         channels->max_other    = 0;
 192         channels->max_combined = 0;
 193         channels->rx_count = hinic_hwdev_num_qps(hwdev);
 194         channels->tx_count = hinic_hwdev_num_qps(hwdev);
 195         channels->other_count    = 0;
 196         channels->combined_count = 0;
 197 }
 198
 199 static const struct ethtool_ops hinic_ethtool_ops = {
 200         .get_link_ksettings = hinic_get_link_ksettings,
 201         .get_drvinfo = hinic_get_drvinfo,
 202         .get_link = ethtool_op_get_link,
 203         .get_ringparam = hinic_get_ringparam,
 204         .get_channels = hinic_get_channels,
 205 };
 206
 207 static void update_rx_stats(struct hinic_dev *nic_dev, struct hinic_rxq *rxq)
 208 {
 209         struct hinic_rxq_stats *nic_rx_stats = &nic_dev->rx_stats;
 210         struct hinic_rxq_stats rx_stats;
 211
 212         u64_stats_init(&rx_stats.syncp);
 213
 214         hinic_rxq_get_stats(rxq, &rx_stats);
 215
 216         u64_stats_update_begin(&nic_rx_stats->syncp);
 217         nic_rx_stats->bytes += rx_stats.bytes;
 218         nic_rx_stats->pkts  += rx_stats.pkts;
 219         u64_stats_update_end(&nic_rx_stats->syncp);
 220
 221         hinic_rxq_clean_stats(rxq);
 222 }
 223
 224 static void update_tx_stats(struct hinic_dev *nic_dev, struct hinic_txq *txq)
 225 {
 226         struct hinic_txq_stats *nic_tx_stats = &nic_dev->tx_stats;
 227         struct hinic_txq_stats tx_stats;
 228
 229         u64_stats_init(&tx_stats.syncp);
 230
 231         hinic_txq_get_stats(txq, &tx_stats);
 232
 233         u64_stats_update_begin(&nic_tx_stats->syncp);
 234         nic_tx_stats->bytes += tx_stats.bytes;
 235         nic_tx_stats->pkts += tx_stats.pkts;
 236         nic_tx_stats->tx_busy += tx_stats.tx_busy;
 237         nic_tx_stats->tx_wake += tx_stats.tx_wake;
 238         nic_tx_stats->tx_dropped += tx_stats.tx_dropped;
 239         u64_stats_update_end(&nic_tx_stats->syncp);
 240
 241         hinic_txq_clean_stats(txq);
 242 }
 243
 244 static void update_nic_stats(struct hinic_dev *nic_dev)
 245 {
 246         int i, num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
 247
 248         for (i = 0; i < num_qps; i++)
 249                 update_rx_stats(nic_dev, &nic_dev->rxqs[i]);
 250
 251         for (i = 0; i < num_qps; i++)
 252                 update_tx_stats(nic_dev, &nic_dev->txqs[i]);
 253 }
 254
 255 /**
 256  * create_txqs - Create the Logical Tx Queues of specific NIC device
 257  * @nic_dev: the specific NIC device
 258  *
 259  * Return 0 - Success, negative - Failure
 260  **/
 261 static int create_txqs(struct hinic_dev *nic_dev)
 262 {
 263         int err, i, j, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 264         struct net_device *netdev = nic_dev->netdev;
 265         size_t txq_size;
 266
 267         if (nic_dev->txqs)
 268                 return -EINVAL;
 269
 270         txq_size = num_txqs * sizeof(*nic_dev->txqs);
 271         nic_dev->txqs = devm_kzalloc(&netdev->dev, txq_size, GFP_KERNEL);
 272         if (!nic_dev->txqs)
 273                 return -ENOMEM;
 274
 275         for (i = 0; i < num_txqs; i++) {
 276                 struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i);
 277
 278                 err = hinic_init_txq(&nic_dev->txqs[i], sq, netdev);
 279                 if (err) {
 280                         netif_err(nic_dev, drv, netdev,
 281                                   "Failed to init Txq\n");
 282                         goto err_init_txq;
 283                 }
 284         }
 285
 286         return 0;
 287
 288 err_init_txq:
 289         for (j = 0; j < i; j++)
 290                 hinic_clean_txq(&nic_dev->txqs[j]);
 291
 292         devm_kfree(&netdev->dev, nic_dev->txqs);
 293         return err;
 294 }
 295
 296 /**
 297  * free_txqs - Free the Logical Tx Queues of specific NIC device
 298  * @nic_dev: the specific NIC device
 299  **/
 300 static void free_txqs(struct hinic_dev *nic_dev)
 301 {
 302         int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 303         struct net_device *netdev = nic_dev->netdev;
 304
 305         if (!nic_dev->txqs)
 306                 return;
 307
 308         for (i = 0; i < num_txqs; i++)
 309                 hinic_clean_txq(&nic_dev->txqs[i]);
 310
 311         devm_kfree(&netdev->dev, nic_dev->txqs);
 312         nic_dev->txqs = NULL;
 313 }
 314
 315 /**
 316  * create_txqs - Create the Logical Rx Queues of specific NIC device
 317  * @nic_dev: the specific NIC device
 318  *
 319  * Return 0 - Success, negative - Failure
 320  **/
 321 static int create_rxqs(struct hinic_dev *nic_dev)
 322 {
 323         int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 324         struct net_device *netdev = nic_dev->netdev;
 325         size_t rxq_size;
 326
 327         if (nic_dev->rxqs)
 328                 return -EINVAL;
 329
 330         rxq_size = num_rxqs * sizeof(*nic_dev->rxqs);
 331         nic_dev->rxqs = devm_kzalloc(&netdev->dev, rxq_size, GFP_KERNEL);
 332         if (!nic_dev->rxqs)
 333                 return -ENOMEM;
 334
 335         for (i = 0; i < num_rxqs; i++) {
 336                 struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
 337
 338                 err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev);
 339                 if (err) {
 340                         netif_err(nic_dev, drv, netdev,
 341                                   "Failed to init rxq\n");
 342                         goto err_init_rxq;
 343                 }
 344         }
 345
 346         return 0;
 347
 348 err_init_rxq:
 349         for (j = 0; j < i; j++)
 350                 hinic_clean_rxq(&nic_dev->rxqs[j]);
 351
 352         devm_kfree(&netdev->dev, nic_dev->rxqs);
 353         return err;
 354 }
 355
 356 /**
 357  * free_txqs - Free the Logical Rx Queues of specific NIC device
 358  * @nic_dev: the specific NIC device
 359  **/
 360 static void free_rxqs(struct hinic_dev *nic_dev)
 361 {
 362         int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 363         struct net_device *netdev = nic_dev->netdev;
 364
 365         if (!nic_dev->rxqs)
 366                 return;
 367
 368         for (i = 0; i < num_rxqs; i++)
 369                 hinic_clean_rxq(&nic_dev->rxqs[i]);
 370
 371         devm_kfree(&netdev->dev, nic_dev->rxqs);
 372         nic_dev->rxqs = NULL;
 373 }
 374
 375 static int hinic_open(struct net_device *netdev)
 376 {
 377         struct hinic_dev *nic_dev = netdev_priv(netdev);
 378         enum hinic_port_link_state link_state;
 379         int err, ret, num_qps;
 380
 381         if (!(nic_dev->flags & HINIC_INTF_UP)) {
 382                 err = hinic_hwdev_ifup(nic_dev->hwdev);
 383                 if (err) {
 384                         netif_err(nic_dev, drv, netdev,
 385                                   "Failed - HW interface up\n");
 386                         return err;
 387                 }
 388         }
 389
 390         err = create_txqs(nic_dev);
 391         if (err) {
 392                 netif_err(nic_dev, drv, netdev,
 393                           "Failed to create Tx queues\n");
 394                 goto err_create_txqs;
 395         }
 396
 397         err = create_rxqs(nic_dev);
 398         if (err) {
 399                 netif_err(nic_dev, drv, netdev,
 400                           "Failed to create Rx queues\n");
 401                 goto err_create_rxqs;
 402         }
 403
 404         num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
 405         netif_set_real_num_tx_queues(netdev, num_qps);
 406         netif_set_real_num_rx_queues(netdev, num_qps);
 407
 408         err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE);
 409         if (err) {
 410                 netif_err(nic_dev, drv, netdev,
 411                           "Failed to set port state\n");
 412                 goto err_port_state;
 413         }
 414
 415         err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE);
 416         if (err) {
 417                 netif_err(nic_dev, drv, netdev,
 418                           "Failed to set func port state\n");
 419                 goto err_func_port_state;
 420         }
 421
 422         /* Wait up to 3 sec between port enable to link state */
 423         msleep(3000);
 424
 425         down(&nic_dev->mgmt_lock);
 426
 427         err = hinic_port_link_state(nic_dev, &link_state);
 428         if (err) {
 429                 netif_err(nic_dev, drv, netdev, "Failed to get link state\n");
 430                 goto err_port_link;
 431         }
 432
 433         if (link_state == HINIC_LINK_STATE_UP)
 434                 nic_dev->flags |= HINIC_LINK_UP;
 435
 436         nic_dev->flags |= HINIC_INTF_UP;
 437
 438         if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
 439             (HINIC_LINK_UP | HINIC_INTF_UP)) {
 440                 netif_info(nic_dev, drv, netdev, "link + intf UP\n");
 441                 netif_carrier_on(netdev);
 442                 netif_tx_wake_all_queues(netdev);
 443         }
 444
 445         up(&nic_dev->mgmt_lock);
 446
 447         netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n");
 448         return 0;
 449
 450 err_port_link:
 451         up(&nic_dev->mgmt_lock);
 452         ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
 453         if (ret)
 454                 netif_warn(nic_dev, drv, netdev,
 455                            "Failed to revert func port state\n");
 456
 457 err_func_port_state:
 458         ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
 459         if (ret)
 460                 netif_warn(nic_dev, drv, netdev,
 461                            "Failed to revert port state\n");
 462
 463 err_port_state:
 464         free_rxqs(nic_dev);
 465
 466 err_create_rxqs:
 467         free_txqs(nic_dev);
 468
 469 err_create_txqs:
 470         if (!(nic_dev->flags & HINIC_INTF_UP))
 471                 hinic_hwdev_ifdown(nic_dev->hwdev);
 472         return err;
 473 }
 474
 475 static int hinic_close(struct net_device *netdev)
 476 {
 477         struct hinic_dev *nic_dev = netdev_priv(netdev);
 478         unsigned int flags;
 479         int err;
 480
 481         down(&nic_dev->mgmt_lock);
 482
 483         flags = nic_dev->flags;
 484         nic_dev->flags &= ~HINIC_INTF_UP;
 485
 486         netif_carrier_off(netdev);
 487         netif_tx_disable(netdev);
 488
 489         update_nic_stats(nic_dev);
 490
 491         up(&nic_dev->mgmt_lock);
 492
 493         err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
 494         if (err) {
 495                 netif_err(nic_dev, drv, netdev,
 496                           "Failed to set func port state\n");
 497                 nic_dev->flags |= (flags & HINIC_INTF_UP);
 498                 return err;
 499         }
 500
 501         err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
 502         if (err) {
 503                 netif_err(nic_dev, drv, netdev, "Failed to set port state\n");
 504                 nic_dev->flags |= (flags & HINIC_INTF_UP);
 505                 return err;
 506         }
 507
 508         free_rxqs(nic_dev);
 509         free_txqs(nic_dev);
 510
 511         if (flags & HINIC_INTF_UP)
 512                 hinic_hwdev_ifdown(nic_dev->hwdev);
 513
 514         netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n");
 515         return 0;
 516 }
 517
 518 static int hinic_change_mtu(struct net_device *netdev, int new_mtu)
 519 {
 520         struct hinic_dev *nic_dev = netdev_priv(netdev);
 521         int err;
 522
 523         netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu);
 524
 525         err = hinic_port_set_mtu(nic_dev, new_mtu);
 526         if (err)
 527                 netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n");
 528         else
 529                 netdev->mtu = new_mtu;
 530
 531         return err;
 532 }
 533
 534 /**
 535  * change_mac_addr - change the main mac address of network device
 536  * @netdev: network device
 537  * @addr: mac address to set
 538  *
 539  * Return 0 - Success, negative - Failure
 540  **/
 541 static int change_mac_addr(struct net_device *netdev, const u8 *addr)
 542 {
 543         struct hinic_dev *nic_dev = netdev_priv(netdev);
 544         u16 vid = 0;
 545         int err;
 546
 547         if (!is_valid_ether_addr(addr))
 548                 return -EADDRNOTAVAIL;
 549
 550         netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n",
 551                    addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 552
 553         down(&nic_dev->mgmt_lock);
 554
 555         do {
 556                 err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid);
 557                 if (err) {
 558                         netif_err(nic_dev, drv, netdev,
 559                                   "Failed to delete mac\n");
 560                         break;
 561                 }
 562
 563                 err = hinic_port_add_mac(nic_dev, addr, vid);
 564                 if (err) {
 565                         netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
 566                         break;
 567                 }
 568
 569                 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
 570         } while (vid != VLAN_N_VID);
 571
 572         up(&nic_dev->mgmt_lock);
 573         return err;
 574 }
 575
 576 static int hinic_set_mac_addr(struct net_device *netdev, void *addr)
 577 {
 578         unsigned char new_mac[ETH_ALEN];
 579         struct sockaddr *saddr = addr;
 580         int err;
 581
 582         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 583
 584         err = change_mac_addr(netdev, new_mac);
 585         if (!err)
 586                 memcpy(netdev->dev_addr, new_mac, ETH_ALEN);
 587
 588         return err;
 589 }
 590
 591 /**
 592  * add_mac_addr - add mac address to network device
 593  * @netdev: network device
 594  * @addr: mac address to add
 595  *
 596  * Return 0 - Success, negative - Failure
 597  **/
 598 static int add_mac_addr(struct net_device *netdev, const u8 *addr)
 599 {
 600         struct hinic_dev *nic_dev = netdev_priv(netdev);
 601         u16 vid = 0;
 602         int err;
 603
 604         netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n",
 605                    addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 606
 607         down(&nic_dev->mgmt_lock);
 608
 609         do {
 610                 err = hinic_port_add_mac(nic_dev, addr, vid);
 611                 if (err) {
 612                         netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
 613                         break;
 614                 }
 615
 616                 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
 617         } while (vid != VLAN_N_VID);
 618
 619         up(&nic_dev->mgmt_lock);
 620         return err;
 621 }
 622
 623 /**
 624  * remove_mac_addr - remove mac address from network device
 625  * @netdev: network device
 626  * @addr: mac address to remove
 627  *
 628  * Return 0 - Success, negative - Failure
 629  **/
 630 static int remove_mac_addr(struct net_device *netdev, const u8 *addr)
 631 {
 632         struct hinic_dev *nic_dev = netdev_priv(netdev);
 633         u16 vid = 0;
 634         int err;
 635
 636         if (!is_valid_ether_addr(addr))
 637                 return -EADDRNOTAVAIL;
 638
 639         netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n",
 640                    addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 641
 642         down(&nic_dev->mgmt_lock);
 643
 644         do {
 645                 err = hinic_port_del_mac(nic_dev, addr, vid);
 646                 if (err) {
 647                         netif_err(nic_dev, drv, netdev,
 648                                   "Failed to delete mac\n");
 649                         break;
 650                 }
 651
 652                 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
 653         } while (vid != VLAN_N_VID);
 654
 655         up(&nic_dev->mgmt_lock);
 656         return err;
 657 }
 658
 659 static int hinic_vlan_rx_add_vid(struct net_device *netdev,
 660                                  __always_unused __be16 proto, u16 vid)
 661 {
 662         struct hinic_dev *nic_dev = netdev_priv(netdev);
 663         int ret, err;
 664
 665         netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid);
 666
 667         down(&nic_dev->mgmt_lock);
 668
 669         err = hinic_port_add_vlan(nic_dev, vid);
 670         if (err) {
 671                 netif_err(nic_dev, drv, netdev, "Failed to add vlan\n");
 672                 goto err_vlan_add;
 673         }
 674
 675         err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid);
 676         if (err) {
 677                 netif_err(nic_dev, drv, netdev, "Failed to set mac\n");
 678                 goto err_add_mac;
 679         }
 680
 681         bitmap_set(nic_dev->vlan_bitmap, vid, 1);
 682
 683         up(&nic_dev->mgmt_lock);
 684         return 0;
 685
 686 err_add_mac:
 687         ret = hinic_port_del_vlan(nic_dev, vid);
 688         if (ret)
 689                 netif_err(nic_dev, drv, netdev,
 690                           "Failed to revert by removing vlan\n");
 691
 692 err_vlan_add:
 693         up(&nic_dev->mgmt_lock);
 694         return err;
 695 }
 696
 697 static int hinic_vlan_rx_kill_vid(struct net_device *netdev,
 698                                   __always_unused __be16 proto, u16 vid)
 699 {
 700         struct hinic_dev *nic_dev = netdev_priv(netdev);
 701         int err;
 702
 703         netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid);
 704
 705         down(&nic_dev->mgmt_lock);
 706
 707         err = hinic_port_del_vlan(nic_dev, vid);
 708         if (err) {
 709                 netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n");
 710                 goto err_del_vlan;
 711         }
 712
 713         bitmap_clear(nic_dev->vlan_bitmap, vid, 1);
 714
 715         up(&nic_dev->mgmt_lock);
 716         return 0;
 717
 718 err_del_vlan:
 719         up(&nic_dev->mgmt_lock);
 720         return err;
 721 }
 722
 723 static void set_rx_mode(struct work_struct *work)
 724 {
 725         struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work);
 726         struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work);
 727         struct netdev_hw_addr *ha;
 728
 729         netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n");
 730
 731         hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode);
 732
 733         __dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
 734         __dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
 735
 736         netdev_for_each_mc_addr(ha, nic_dev->netdev)
 737                 add_mac_addr(nic_dev->netdev, ha->addr);
 738 }
 739
 740 static void hinic_set_rx_mode(struct net_device *netdev)
 741 {
 742         struct hinic_dev *nic_dev = netdev_priv(netdev);
 743         struct hinic_rx_mode_work *rx_mode_work;
 744         u32 rx_mode;
 745
 746         rx_mode_work = &nic_dev->rx_mode_work;
 747
 748         rx_mode = HINIC_RX_MODE_UC |
 749                   HINIC_RX_MODE_MC |
 750                   HINIC_RX_MODE_BC;
 751
 752         if (netdev->flags & IFF_PROMISC)
 753                 rx_mode |= HINIC_RX_MODE_PROMISC;
 754         else if (netdev->flags & IFF_ALLMULTI)
 755                 rx_mode |= HINIC_RX_MODE_MC_ALL;
 756
 757         rx_mode_work->rx_mode = rx_mode;
 758
 759         queue_work(nic_dev->workq, &rx_mode_work->work);
 760 }
 761
 762 static void hinic_tx_timeout(struct net_device *netdev)
 763 {
 764         struct hinic_dev *nic_dev = netdev_priv(netdev);
 765
 766         netif_err(nic_dev, drv, netdev, "Tx timeout\n");
 767 }
 768
 769 static void hinic_get_stats64(struct net_device *netdev,
 770                               struct rtnl_link_stats64 *stats)
 771 {
 772         struct hinic_dev *nic_dev = netdev_priv(netdev);
 773         struct hinic_rxq_stats *nic_rx_stats;
 774         struct hinic_txq_stats *nic_tx_stats;
 775
 776         nic_rx_stats = &nic_dev->rx_stats;
 777         nic_tx_stats = &nic_dev->tx_stats;
 778
 779         down(&nic_dev->mgmt_lock);
 780
 781         if (nic_dev->flags & HINIC_INTF_UP)
 782                 update_nic_stats(nic_dev);
 783
 784         up(&nic_dev->mgmt_lock);
 785
 786         stats->rx_bytes   = nic_rx_stats->bytes;
 787         stats->rx_packets = nic_rx_stats->pkts;
 788
 789         stats->tx_bytes   = nic_tx_stats->bytes;
 790         stats->tx_packets = nic_tx_stats->pkts;
 791         stats->tx_errors  = nic_tx_stats->tx_dropped;
 792 }
 793
 794 static const struct net_device_ops hinic_netdev_ops = {
 795         .ndo_open = hinic_open,
 796         .ndo_stop = hinic_close,
 797         .ndo_change_mtu = hinic_change_mtu,
 798         .ndo_set_mac_address = hinic_set_mac_addr,
 799         .ndo_validate_addr = eth_validate_addr,
 800         .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
 801         .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
 802         .ndo_set_rx_mode = hinic_set_rx_mode,
 803         .ndo_start_xmit = hinic_xmit_frame,
 804         .ndo_tx_timeout = hinic_tx_timeout,
 805         .ndo_get_stats64 = hinic_get_stats64,
 806 };
 807
 808 static void netdev_features_init(struct net_device *netdev)
 809 {
 810         netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
 811                               NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
 812                               NETIF_F_RXCSUM;
 813
 814         netdev->vlan_features = netdev->hw_features;
 815
 816         netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
 817 }
 818
 819 /**
 820  * link_status_event_handler - link event handler
 821  * @handle: nic device for the handler
 822  * @buf_in: input buffer
 823  * @in_size: input size
 824  * @buf_in: output buffer
 825  * @out_size: returned output size
 826  *
 827  * Return 0 - Success, negative - Failure
 828  **/
 829 static void link_status_event_handler(void *handle, void *buf_in, u16 in_size,
 830                                       void *buf_out, u16 *out_size)
 831 {
 832         struct hinic_port_link_status *link_status, *ret_link_status;
 833         struct hinic_dev *nic_dev = handle;
 834
 835         link_status = buf_in;
 836
 837         if (link_status->link == HINIC_LINK_STATE_UP) {
 838                 down(&nic_dev->mgmt_lock);
 839
 840                 nic_dev->flags |= HINIC_LINK_UP;
 841
 842                 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
 843                     (HINIC_LINK_UP | HINIC_INTF_UP)) {
 844                         netif_carrier_on(nic_dev->netdev);
 845                         netif_tx_wake_all_queues(nic_dev->netdev);
 846                 }
 847
 848                 up(&nic_dev->mgmt_lock);
 849
 850                 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n");
 851         } else {
 852                 down(&nic_dev->mgmt_lock);
 853
 854                 nic_dev->flags &= ~HINIC_LINK_UP;
 855
 856                 netif_carrier_off(nic_dev->netdev);
 857                 netif_tx_disable(nic_dev->netdev);
 858
 859                 up(&nic_dev->mgmt_lock);
 860
 861                 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n");
 862         }
 863
 864         ret_link_status = buf_out;
 865         ret_link_status->status = 0;
 866
 867         *out_size = sizeof(*ret_link_status);
 868 }
 869
 870 static int set_features(struct hinic_dev *nic_dev,
 871                         netdev_features_t pre_features,
 872                         netdev_features_t features, bool force_change)
 873 {
 874         netdev_features_t changed = force_change ? ~0 : pre_features ^ features;
 875         u32 csum_en = HINIC_RX_CSUM_OFFLOAD_EN;
 876         int err = 0;
 877
 878         if (changed & NETIF_F_TSO)
 879                 err = hinic_port_set_tso(nic_dev, (features & NETIF_F_TSO) ?
 880                                          HINIC_TSO_ENABLE : HINIC_TSO_DISABLE);
 881
 882         if (changed & NETIF_F_RXCSUM)
 883                 err = hinic_set_rx_csum_offload(nic_dev, csum_en);
 884
 885         return err;
 886 }
 887
 888 /**
 889  * nic_dev_init - Initialize the NIC device
 890  * @pdev: the NIC pci device
 891  *
 892  * Return 0 - Success, negative - Failure
 893  **/
 894 static int nic_dev_init(struct pci_dev *pdev)
 895 {
 896         struct hinic_rx_mode_work *rx_mode_work;
 897         struct hinic_txq_stats *tx_stats;
 898         struct hinic_rxq_stats *rx_stats;
 899         struct hinic_dev *nic_dev;
 900         struct net_device *netdev;
 901         struct hinic_hwdev *hwdev;
 902         int err, num_qps;
 903
 904         hwdev = hinic_init_hwdev(pdev);
 905         if (IS_ERR(hwdev)) {
 906                 dev_err(&pdev->dev, "Failed to initialize HW device\n");
 907                 return PTR_ERR(hwdev);
 908         }
 909
 910         num_qps = hinic_hwdev_num_qps(hwdev);
 911         if (num_qps <= 0) {
 912                 dev_err(&pdev->dev, "Invalid number of QPS\n");
 913                 err = -EINVAL;
 914                 goto err_num_qps;
 915         }
 916
 917         netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps);
 918         if (!netdev) {
 919                 dev_err(&pdev->dev, "Failed to allocate Ethernet device\n");
 920                 err = -ENOMEM;
 921                 goto err_alloc_etherdev;
 922         }
 923
 924         netdev->netdev_ops = &hinic_netdev_ops;
 925         netdev->ethtool_ops = &hinic_ethtool_ops;
 926         netdev->max_mtu = ETH_MAX_MTU;
 927
 928         nic_dev = netdev_priv(netdev);
 929         nic_dev->netdev = netdev;
 930         nic_dev->hwdev  = hwdev;
 931         nic_dev->msg_enable = MSG_ENABLE_DEFAULT;
 932         nic_dev->flags = 0;
 933         nic_dev->txqs = NULL;
 934         nic_dev->rxqs = NULL;
 935         nic_dev->tx_weight = tx_weight;
 936         nic_dev->rx_weight = rx_weight;
 937
 938         sema_init(&nic_dev->mgmt_lock, 1);
 939
 940         tx_stats = &nic_dev->tx_stats;
 941         rx_stats = &nic_dev->rx_stats;
 942
 943         u64_stats_init(&tx_stats->syncp);
 944         u64_stats_init(&rx_stats->syncp);
 945
 946         nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev,
 947                                             VLAN_BITMAP_SIZE(nic_dev),
 948                                             GFP_KERNEL);
 949         if (!nic_dev->vlan_bitmap) {
 950                 err = -ENOMEM;
 951                 goto err_vlan_bitmap;
 952         }
 953
 954         nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME);
 955         if (!nic_dev->workq) {
 956                 err = -ENOMEM;
 957                 goto err_workq;
 958         }
 959
 960         pci_set_drvdata(pdev, netdev);
 961
 962         err = hinic_port_get_mac(nic_dev, netdev->dev_addr);
 963         if (err)
 964                 dev_warn(&pdev->dev, "Failed to get mac address\n");
 965
 966         err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0);
 967         if (err) {
 968                 dev_err(&pdev->dev, "Failed to add mac\n");
 969                 goto err_add_mac;
 970         }
 971
 972         err = hinic_port_set_mtu(nic_dev, netdev->mtu);
 973         if (err) {
 974                 dev_err(&pdev->dev, "Failed to set mtu\n");
 975                 goto err_set_mtu;
 976         }
 977
 978         rx_mode_work = &nic_dev->rx_mode_work;
 979         INIT_WORK(&rx_mode_work->work, set_rx_mode);
 980
 981         netdev_features_init(netdev);
 982
 983         netif_carrier_off(netdev);
 984
 985         hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
 986                                 nic_dev, link_status_event_handler);
 987
 988         err = set_features(nic_dev, 0, nic_dev->netdev->features, true);
 989         if (err)
 990                 goto err_set_features;
 991
 992         SET_NETDEV_DEV(netdev, &pdev->dev);
 993
 994         err = register_netdev(netdev);
 995         if (err) {
 996                 dev_err(&pdev->dev, "Failed to register netdev\n");
 997                 goto err_reg_netdev;
 998         }
 999
1000         return 0;
1001
1002 err_reg_netdev:
1003 err_set_features:
1004         hinic_hwdev_cb_unregister(nic_dev->hwdev,
1005                                   HINIC_MGMT_MSG_CMD_LINK_STATUS);
1006         cancel_work_sync(&rx_mode_work->work);
1007
1008 err_set_mtu:
1009 err_add_mac:
1010         pci_set_drvdata(pdev, NULL);
1011         destroy_workqueue(nic_dev->workq);
1012
1013 err_workq:
1014 err_vlan_bitmap:
1015         free_netdev(netdev);
1016
1017 err_alloc_etherdev:
1018 err_num_qps:
1019         hinic_free_hwdev(hwdev);
1020         return err;
1021 }
1022
1023 static int hinic_probe(struct pci_dev *pdev,
1024                        const struct pci_device_id *id)
1025 {
1026         int err = pci_enable_device(pdev);
1027
1028         if (err) {
1029                 dev_err(&pdev->dev, "Failed to enable PCI device\n");
1030                 return err;
1031         }
1032
1033         err = pci_request_regions(pdev, HINIC_DRV_NAME);
1034         if (err) {
1035                 dev_err(&pdev->dev, "Failed to request PCI regions\n");
1036                 goto err_pci_regions;
1037         }
1038
1039         pci_set_master(pdev);
1040
1041         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1042         if (err) {
1043                 dev_warn(&pdev->dev, "Couldn't set 64-bit DMA mask\n");
1044                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1045                 if (err) {
1046                         dev_err(&pdev->dev, "Failed to set DMA mask\n");
1047                         goto err_dma_mask;
1048                 }
1049         }
1050
1051         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1052         if (err) {
1053                 dev_warn(&pdev->dev,
1054                          "Couldn't set 64-bit consistent DMA mask\n");
1055                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1056                 if (err) {
1057                         dev_err(&pdev->dev,
1058                                 "Failed to set consistent DMA mask\n");
1059                         goto err_dma_consistent_mask;
1060                 }
1061         }
1062
1063         err = nic_dev_init(pdev);
1064         if (err) {
1065                 dev_err(&pdev->dev, "Failed to initialize NIC device\n");
1066                 goto err_nic_dev_init;
1067         }
1068
1069         dev_info(&pdev->dev, "HiNIC driver - probed\n");
1070         return 0;
1071
1072 err_nic_dev_init:
1073 err_dma_consistent_mask:
1074 err_dma_mask:
1075         pci_release_regions(pdev);
1076
1077 err_pci_regions:
1078         pci_disable_device(pdev);
1079         return err;
1080 }
1081
1082 static void hinic_remove(struct pci_dev *pdev)
1083 {
1084         struct net_device *netdev = pci_get_drvdata(pdev);
1085         struct hinic_dev *nic_dev = netdev_priv(netdev);
1086         struct hinic_rx_mode_work *rx_mode_work;
1087
1088         unregister_netdev(netdev);
1089
1090         hinic_hwdev_cb_unregister(nic_dev->hwdev,
1091                                   HINIC_MGMT_MSG_CMD_LINK_STATUS);
1092
1093         rx_mode_work = &nic_dev->rx_mode_work;
1094         cancel_work_sync(&rx_mode_work->work);
1095
1096         pci_set_drvdata(pdev, NULL);
1097
1098         destroy_workqueue(nic_dev->workq);
1099
1100         hinic_free_hwdev(nic_dev->hwdev);
1101
1102         free_netdev(netdev);
1103
1104         pci_release_regions(pdev);
1105         pci_disable_device(pdev);
1106
1107         dev_info(&pdev->dev, "HiNIC driver - removed\n");
1108 }
1109
1110 static void hinic_shutdown(struct pci_dev *pdev)
1111 {
1112         pci_disable_device(pdev);
1113 }
1114
1115 static const struct pci_device_id hinic_pci_table[] = {
1116         { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE), 0},
1117         { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE), 0},
1118         { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ), 0},
1119         { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ), 0},
1120         { 0, 0}
1121 };
1122 MODULE_DEVICE_TABLE(pci, hinic_pci_table);
1123
1124 static struct pci_driver hinic_driver = {
1125         .name           = HINIC_DRV_NAME,
1126         .id_table       = hinic_pci_table,
1127         .probe          = hinic_probe,
1128         .remove         = hinic_remove,
1129         .shutdown       = hinic_shutdown,
1130 };
1131
1132 module_pci_driver(hinic_driver);