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 PCI_DEVICE_ID_HI1822_PF         0x1822
  55
  56 #define HINIC_WQ_NAME                   "hinic_dev"
  57
  58 #define MSG_ENABLE_DEFAULT              (NETIF_MSG_DRV | NETIF_MSG_PROBE | \
  59                                          NETIF_MSG_IFUP |                  \
  60                                          NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR)
  61
  62 #define VLAN_BITMAP_SIZE(nic_dev)       (ALIGN(VLAN_N_VID, 8) / 8)
  63
  64 #define work_to_rx_mode_work(work)      \
  65                 container_of(work, struct hinic_rx_mode_work, work)
  66
  67 #define rx_mode_work_to_nic_dev(rx_mode_work) \
  68                 container_of(rx_mode_work, struct hinic_dev, rx_mode_work)
  69
  70 static int change_mac_addr(struct net_device *netdev, const u8 *addr);
  71
  72 static void set_link_speed(struct ethtool_link_ksettings *link_ksettings,
  73                            enum hinic_speed speed)
  74 {
  75         switch (speed) {
  76         case HINIC_SPEED_10MB_LINK:
  77                 link_ksettings->base.speed = SPEED_10;
  78                 break;
  79
  80         case HINIC_SPEED_100MB_LINK:
  81                 link_ksettings->base.speed = SPEED_100;
  82                 break;
  83
  84         case HINIC_SPEED_1000MB_LINK:
  85                 link_ksettings->base.speed = SPEED_1000;
  86                 break;
  87
  88         case HINIC_SPEED_10GB_LINK:
  89                 link_ksettings->base.speed = SPEED_10000;
  90                 break;
  91
  92         case HINIC_SPEED_25GB_LINK:
  93                 link_ksettings->base.speed = SPEED_25000;
  94                 break;
  95
  96         case HINIC_SPEED_40GB_LINK:
  97                 link_ksettings->base.speed = SPEED_40000;
  98                 break;
  99
 100         case HINIC_SPEED_100GB_LINK:
 101                 link_ksettings->base.speed = SPEED_100000;
 102                 break;
 103
 104         default:
 105                 link_ksettings->base.speed = SPEED_UNKNOWN;
 106                 break;
 107         }
 108 }
 109
 110 static int hinic_get_link_ksettings(struct net_device *netdev,
 111                                     struct ethtool_link_ksettings
 112                                     *link_ksettings)
 113 {
 114         struct hinic_dev *nic_dev = netdev_priv(netdev);
 115         enum hinic_port_link_state link_state;
 116         struct hinic_port_cap port_cap;
 117         int err;
 118
 119         ethtool_link_ksettings_zero_link_mode(link_ksettings, advertising);
 120         ethtool_link_ksettings_add_link_mode(link_ksettings, supported,
 121                                              Autoneg);
 122
 123         link_ksettings->base.speed   = SPEED_UNKNOWN;
 124         link_ksettings->base.autoneg = AUTONEG_DISABLE;
 125         link_ksettings->base.duplex  = DUPLEX_UNKNOWN;
 126
 127         err = hinic_port_get_cap(nic_dev, &port_cap);
 128         if (err) {
 129                 netif_err(nic_dev, drv, netdev,
 130                           "Failed to get port capabilities\n");
 131                 return err;
 132         }
 133
 134         err = hinic_port_link_state(nic_dev, &link_state);
 135         if (err) {
 136                 netif_err(nic_dev, drv, netdev,
 137                           "Failed to get port link state\n");
 138                 return err;
 139         }
 140
 141         if (link_state != HINIC_LINK_STATE_UP) {
 142                 netif_info(nic_dev, drv, netdev, "No link\n");
 143                 return err;
 144         }
 145
 146         set_link_speed(link_ksettings, port_cap.speed);
 147
 148         if (!!(port_cap.autoneg_cap & HINIC_AUTONEG_SUPPORTED))
 149                 ethtool_link_ksettings_add_link_mode(link_ksettings,
 150                                                      advertising, Autoneg);
 151
 152         if (port_cap.autoneg_state == HINIC_AUTONEG_ACTIVE)
 153                 link_ksettings->base.autoneg = AUTONEG_ENABLE;
 154
 155         link_ksettings->base.duplex = (port_cap.duplex == HINIC_DUPLEX_FULL) ?
 156                                        DUPLEX_FULL : DUPLEX_HALF;
 157         return 0;
 158 }
 159
 160 static void hinic_get_drvinfo(struct net_device *netdev,
 161                               struct ethtool_drvinfo *info)
 162 {
 163         struct hinic_dev *nic_dev = netdev_priv(netdev);
 164         struct hinic_hwdev *hwdev = nic_dev->hwdev;
 165         struct hinic_hwif *hwif = hwdev->hwif;
 166
 167         strlcpy(info->driver, HINIC_DRV_NAME, sizeof(info->driver));
 168         strlcpy(info->bus_info, pci_name(hwif->pdev), sizeof(info->bus_info));
 169 }
 170
 171 static void hinic_get_ringparam(struct net_device *netdev,
 172                                 struct ethtool_ringparam *ring)
 173 {
 174         ring->rx_max_pending = HINIC_RQ_DEPTH;
 175         ring->tx_max_pending = HINIC_SQ_DEPTH;
 176         ring->rx_pending = HINIC_RQ_DEPTH;
 177         ring->tx_pending = HINIC_SQ_DEPTH;
 178 }
 179
 180 static void hinic_get_channels(struct net_device *netdev,
 181                                struct ethtool_channels *channels)
 182 {
 183         struct hinic_dev *nic_dev = netdev_priv(netdev);
 184         struct hinic_hwdev *hwdev = nic_dev->hwdev;
 185
 186         channels->max_rx = hwdev->nic_cap.max_qps;
 187         channels->max_tx = hwdev->nic_cap.max_qps;
 188         channels->max_other    = 0;
 189         channels->max_combined = 0;
 190         channels->rx_count = hinic_hwdev_num_qps(hwdev);
 191         channels->tx_count = hinic_hwdev_num_qps(hwdev);
 192         channels->other_count    = 0;
 193         channels->combined_count = 0;
 194 }
 195
 196 static const struct ethtool_ops hinic_ethtool_ops = {
 197         .get_link_ksettings = hinic_get_link_ksettings,
 198         .get_drvinfo = hinic_get_drvinfo,
 199         .get_link = ethtool_op_get_link,
 200         .get_ringparam = hinic_get_ringparam,
 201         .get_channels = hinic_get_channels,
 202 };
 203
 204 static void update_rx_stats(struct hinic_dev *nic_dev, struct hinic_rxq *rxq)
 205 {
 206         struct hinic_rxq_stats *nic_rx_stats = &nic_dev->rx_stats;
 207         struct hinic_rxq_stats rx_stats;
 208
 209         u64_stats_init(&rx_stats.syncp);
 210
 211         hinic_rxq_get_stats(rxq, &rx_stats);
 212
 213         u64_stats_update_begin(&nic_rx_stats->syncp);
 214         nic_rx_stats->bytes += rx_stats.bytes;
 215         nic_rx_stats->pkts  += rx_stats.pkts;
 216         u64_stats_update_end(&nic_rx_stats->syncp);
 217
 218         hinic_rxq_clean_stats(rxq);
 219 }
 220
 221 static void update_tx_stats(struct hinic_dev *nic_dev, struct hinic_txq *txq)
 222 {
 223         struct hinic_txq_stats *nic_tx_stats = &nic_dev->tx_stats;
 224         struct hinic_txq_stats tx_stats;
 225
 226         u64_stats_init(&tx_stats.syncp);
 227
 228         hinic_txq_get_stats(txq, &tx_stats);
 229
 230         u64_stats_update_begin(&nic_tx_stats->syncp);
 231         nic_tx_stats->bytes += tx_stats.bytes;
 232         nic_tx_stats->pkts += tx_stats.pkts;
 233         nic_tx_stats->tx_busy += tx_stats.tx_busy;
 234         nic_tx_stats->tx_wake += tx_stats.tx_wake;
 235         nic_tx_stats->tx_dropped += tx_stats.tx_dropped;
 236         u64_stats_update_end(&nic_tx_stats->syncp);
 237
 238         hinic_txq_clean_stats(txq);
 239 }
 240
 241 static void update_nic_stats(struct hinic_dev *nic_dev)
 242 {
 243         int i, num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
 244
 245         for (i = 0; i < num_qps; i++)
 246                 update_rx_stats(nic_dev, &nic_dev->rxqs[i]);
 247
 248         for (i = 0; i < num_qps; i++)
 249                 update_tx_stats(nic_dev, &nic_dev->txqs[i]);
 250 }
 251
 252 /**
 253  * create_txqs - Create the Logical Tx Queues of specific NIC device
 254  * @nic_dev: the specific NIC device
 255  *
 256  * Return 0 - Success, negative - Failure
 257  **/
 258 static int create_txqs(struct hinic_dev *nic_dev)
 259 {
 260         int err, i, j, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 261         struct net_device *netdev = nic_dev->netdev;
 262         size_t txq_size;
 263
 264         if (nic_dev->txqs)
 265                 return -EINVAL;
 266
 267         txq_size = num_txqs * sizeof(*nic_dev->txqs);
 268         nic_dev->txqs = devm_kzalloc(&netdev->dev, txq_size, GFP_KERNEL);
 269         if (!nic_dev->txqs)
 270                 return -ENOMEM;
 271
 272         for (i = 0; i < num_txqs; i++) {
 273                 struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i);
 274
 275                 err = hinic_init_txq(&nic_dev->txqs[i], sq, netdev);
 276                 if (err) {
 277                         netif_err(nic_dev, drv, netdev,
 278                                   "Failed to init Txq\n");
 279                         goto err_init_txq;
 280                 }
 281         }
 282
 283         return 0;
 284
 285 err_init_txq:
 286         for (j = 0; j < i; j++)
 287                 hinic_clean_txq(&nic_dev->txqs[j]);
 288
 289         devm_kfree(&netdev->dev, nic_dev->txqs);
 290         return err;
 291 }
 292
 293 /**
 294  * free_txqs - Free the Logical Tx Queues of specific NIC device
 295  * @nic_dev: the specific NIC device
 296  **/
 297 static void free_txqs(struct hinic_dev *nic_dev)
 298 {
 299         int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 300         struct net_device *netdev = nic_dev->netdev;
 301
 302         if (!nic_dev->txqs)
 303                 return;
 304
 305         for (i = 0; i < num_txqs; i++)
 306                 hinic_clean_txq(&nic_dev->txqs[i]);
 307
 308         devm_kfree(&netdev->dev, nic_dev->txqs);
 309         nic_dev->txqs = NULL;
 310 }
 311
 312 /**
 313  * create_txqs - Create the Logical Rx Queues of specific NIC device
 314  * @nic_dev: the specific NIC device
 315  *
 316  * Return 0 - Success, negative - Failure
 317  **/
 318 static int create_rxqs(struct hinic_dev *nic_dev)
 319 {
 320         int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 321         struct net_device *netdev = nic_dev->netdev;
 322         size_t rxq_size;
 323
 324         if (nic_dev->rxqs)
 325                 return -EINVAL;
 326
 327         rxq_size = num_rxqs * sizeof(*nic_dev->rxqs);
 328         nic_dev->rxqs = devm_kzalloc(&netdev->dev, rxq_size, GFP_KERNEL);
 329         if (!nic_dev->rxqs)
 330                 return -ENOMEM;
 331
 332         for (i = 0; i < num_rxqs; i++) {
 333                 struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i);
 334
 335                 err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev);
 336                 if (err) {
 337                         netif_err(nic_dev, drv, netdev,
 338                                   "Failed to init rxq\n");
 339                         goto err_init_rxq;
 340                 }
 341         }
 342
 343         return 0;
 344
 345 err_init_rxq:
 346         for (j = 0; j < i; j++)
 347                 hinic_clean_rxq(&nic_dev->rxqs[j]);
 348
 349         devm_kfree(&netdev->dev, nic_dev->rxqs);
 350         return err;
 351 }
 352
 353 /**
 354  * free_txqs - Free the Logical Rx Queues of specific NIC device
 355  * @nic_dev: the specific NIC device
 356  **/
 357 static void free_rxqs(struct hinic_dev *nic_dev)
 358 {
 359         int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev);
 360         struct net_device *netdev = nic_dev->netdev;
 361
 362         if (!nic_dev->rxqs)
 363                 return;
 364
 365         for (i = 0; i < num_rxqs; i++)
 366                 hinic_clean_rxq(&nic_dev->rxqs[i]);
 367
 368         devm_kfree(&netdev->dev, nic_dev->rxqs);
 369         nic_dev->rxqs = NULL;
 370 }
 371
 372 static int hinic_open(struct net_device *netdev)
 373 {
 374         struct hinic_dev *nic_dev = netdev_priv(netdev);
 375         enum hinic_port_link_state link_state;
 376         int err, ret, num_qps;
 377
 378         if (!(nic_dev->flags & HINIC_INTF_UP)) {
 379                 err = hinic_hwdev_ifup(nic_dev->hwdev);
 380                 if (err) {
 381                         netif_err(nic_dev, drv, netdev,
 382                                   "Failed - HW interface up\n");
 383                         return err;
 384                 }
 385         }
 386
 387         err = create_txqs(nic_dev);
 388         if (err) {
 389                 netif_err(nic_dev, drv, netdev,
 390                           "Failed to create Tx queues\n");
 391                 goto err_create_txqs;
 392         }
 393
 394         err = create_rxqs(nic_dev);
 395         if (err) {
 396                 netif_err(nic_dev, drv, netdev,
 397                           "Failed to create Rx queues\n");
 398                 goto err_create_rxqs;
 399         }
 400
 401         num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
 402         netif_set_real_num_tx_queues(netdev, num_qps);
 403         netif_set_real_num_rx_queues(netdev, num_qps);
 404
 405         err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE);
 406         if (err) {
 407                 netif_err(nic_dev, drv, netdev,
 408                           "Failed to set port state\n");
 409                 goto err_port_state;
 410         }
 411
 412         err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE);
 413         if (err) {
 414                 netif_err(nic_dev, drv, netdev,
 415                           "Failed to set func port state\n");
 416                 goto err_func_port_state;
 417         }
 418
 419         /* Wait up to 3 sec between port enable to link state */
 420         msleep(3000);
 421
 422         down(&nic_dev->mgmt_lock);
 423
 424         err = hinic_port_link_state(nic_dev, &link_state);
 425         if (err) {
 426                 netif_err(nic_dev, drv, netdev, "Failed to get link state\n");
 427                 goto err_port_link;
 428         }
 429
 430         if (link_state == HINIC_LINK_STATE_UP)
 431                 nic_dev->flags |= HINIC_LINK_UP;
 432
 433         nic_dev->flags |= HINIC_INTF_UP;
 434
 435         if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
 436             (HINIC_LINK_UP | HINIC_INTF_UP)) {
 437                 netif_info(nic_dev, drv, netdev, "link + intf UP\n");
 438                 netif_carrier_on(netdev);
 439                 netif_tx_wake_all_queues(netdev);
 440         }
 441
 442         up(&nic_dev->mgmt_lock);
 443
 444         netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n");
 445         return 0;
 446
 447 err_port_link:
 448         up(&nic_dev->mgmt_lock);
 449         ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
 450         if (ret)
 451                 netif_warn(nic_dev, drv, netdev,
 452                            "Failed to revert func port state\n");
 453
 454 err_func_port_state:
 455         ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
 456         if (ret)
 457                 netif_warn(nic_dev, drv, netdev,
 458                            "Failed to revert port state\n");
 459
 460 err_port_state:
 461         free_rxqs(nic_dev);
 462
 463 err_create_rxqs:
 464         free_txqs(nic_dev);
 465
 466 err_create_txqs:
 467         if (!(nic_dev->flags & HINIC_INTF_UP))
 468                 hinic_hwdev_ifdown(nic_dev->hwdev);
 469         return err;
 470 }
 471
 472 static int hinic_close(struct net_device *netdev)
 473 {
 474         struct hinic_dev *nic_dev = netdev_priv(netdev);
 475         unsigned int flags;
 476         int err;
 477
 478         down(&nic_dev->mgmt_lock);
 479
 480         flags = nic_dev->flags;
 481         nic_dev->flags &= ~HINIC_INTF_UP;
 482
 483         netif_carrier_off(netdev);
 484         netif_tx_disable(netdev);
 485
 486         update_nic_stats(nic_dev);
 487
 488         up(&nic_dev->mgmt_lock);
 489
 490         err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE);
 491         if (err) {
 492                 netif_err(nic_dev, drv, netdev,
 493                           "Failed to set func port state\n");
 494                 nic_dev->flags |= (flags & HINIC_INTF_UP);
 495                 return err;
 496         }
 497
 498         err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE);
 499         if (err) {
 500                 netif_err(nic_dev, drv, netdev, "Failed to set port state\n");
 501                 nic_dev->flags |= (flags & HINIC_INTF_UP);
 502                 return err;
 503         }
 504
 505         free_rxqs(nic_dev);
 506         free_txqs(nic_dev);
 507
 508         if (flags & HINIC_INTF_UP)
 509                 hinic_hwdev_ifdown(nic_dev->hwdev);
 510
 511         netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n");
 512         return 0;
 513 }
 514
 515 static int hinic_change_mtu(struct net_device *netdev, int new_mtu)
 516 {
 517         struct hinic_dev *nic_dev = netdev_priv(netdev);
 518         int err;
 519
 520         netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu);
 521
 522         err = hinic_port_set_mtu(nic_dev, new_mtu);
 523         if (err)
 524                 netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n");
 525         else
 526                 netdev->mtu = new_mtu;
 527
 528         return err;
 529 }
 530
 531 /**
 532  * change_mac_addr - change the main mac address of network device
 533  * @netdev: network device
 534  * @addr: mac address to set
 535  *
 536  * Return 0 - Success, negative - Failure
 537  **/
 538 static int change_mac_addr(struct net_device *netdev, const u8 *addr)
 539 {
 540         struct hinic_dev *nic_dev = netdev_priv(netdev);
 541         u16 vid = 0;
 542         int err;
 543
 544         if (!is_valid_ether_addr(addr))
 545                 return -EADDRNOTAVAIL;
 546
 547         netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n",
 548                    addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 549
 550         down(&nic_dev->mgmt_lock);
 551
 552         do {
 553                 err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid);
 554                 if (err) {
 555                         netif_err(nic_dev, drv, netdev,
 556                                   "Failed to delete mac\n");
 557                         break;
 558                 }
 559
 560                 err = hinic_port_add_mac(nic_dev, addr, vid);
 561                 if (err) {
 562                         netif_err(nic_dev, drv, netdev, "Failed to add mac\n");
 563                         break;
 564                 }
 565
 566                 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1);
 567         } while (vid != VLAN_N_VID);
 568
 569         up(&nic_dev->mgmt_lock);
 570         return err;
 571 }
 572
 573 static int hinic_set_mac_addr(struct net_device *netdev, void *addr)
 574 {
 575         unsigned char new_mac[ETH_ALEN];
 576         struct sockaddr *saddr = addr;
 577         int err;
 578
 579         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 580
 581         err = change_mac_addr(netdev, new_mac);
 582         if (!err)
 583                 memcpy(netdev->dev_addr, new_mac, ETH_ALEN);
 584
 585         return err;
 586 }
 587
 588 /**
 589  * add_mac_addr - add mac address to network device
 590  * @netdev: network device
 591  * @addr: mac address to add
 592  *
 593  * Return 0 - Success, negative - Failure
 594  **/
 595 static int add_mac_addr(struct net_device *netdev, const u8 *addr)
 596 {
 597         struct hinic_dev *nic_dev = netdev_priv(netdev);
 598         u16 vid = 0;
 599         int err;
 600
 601         if (!is_valid_ether_addr(addr))
 602                 return -EADDRNOTAVAIL;
 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
 728         netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n");
 729
 730         hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode);
 731
 732         __dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
 733         __dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
 734 }
 735
 736 static void hinic_set_rx_mode(struct net_device *netdev)
 737 {
 738         struct hinic_dev *nic_dev = netdev_priv(netdev);
 739         struct hinic_rx_mode_work *rx_mode_work;
 740         u32 rx_mode;
 741
 742         rx_mode_work = &nic_dev->rx_mode_work;
 743
 744         rx_mode = HINIC_RX_MODE_UC |
 745                   HINIC_RX_MODE_MC |
 746                   HINIC_RX_MODE_BC;
 747
 748         if (netdev->flags & IFF_PROMISC)
 749                 rx_mode |= HINIC_RX_MODE_PROMISC;
 750         else if (netdev->flags & IFF_ALLMULTI)
 751                 rx_mode |= HINIC_RX_MODE_MC_ALL;
 752
 753         rx_mode_work->rx_mode = rx_mode;
 754
 755         queue_work(nic_dev->workq, &rx_mode_work->work);
 756 }
 757
 758 static void hinic_tx_timeout(struct net_device *netdev)
 759 {
 760         struct hinic_dev *nic_dev = netdev_priv(netdev);
 761
 762         netif_err(nic_dev, drv, netdev, "Tx timeout\n");
 763 }
 764
 765 static void hinic_get_stats64(struct net_device *netdev,
 766                               struct rtnl_link_stats64 *stats)
 767 {
 768         struct hinic_dev *nic_dev = netdev_priv(netdev);
 769         struct hinic_rxq_stats *nic_rx_stats;
 770         struct hinic_txq_stats *nic_tx_stats;
 771
 772         nic_rx_stats = &nic_dev->rx_stats;
 773         nic_tx_stats = &nic_dev->tx_stats;
 774
 775         down(&nic_dev->mgmt_lock);
 776
 777         if (nic_dev->flags & HINIC_INTF_UP)
 778                 update_nic_stats(nic_dev);
 779
 780         up(&nic_dev->mgmt_lock);
 781
 782         stats->rx_bytes   = nic_rx_stats->bytes;
 783         stats->rx_packets = nic_rx_stats->pkts;
 784
 785         stats->tx_bytes   = nic_tx_stats->bytes;
 786         stats->tx_packets = nic_tx_stats->pkts;
 787         stats->tx_errors  = nic_tx_stats->tx_dropped;
 788 }
 789
 790 #ifdef CONFIG_NET_POLL_CONTROLLER
 791 static void hinic_netpoll(struct net_device *netdev)
 792 {
 793         struct hinic_dev *nic_dev = netdev_priv(netdev);
 794         int i, num_qps;
 795
 796         num_qps = hinic_hwdev_num_qps(nic_dev->hwdev);
 797         for (i = 0; i < num_qps; i++) {
 798                 struct hinic_txq *txq = &nic_dev->txqs[i];
 799                 struct hinic_rxq *rxq = &nic_dev->rxqs[i];
 800
 801                 napi_schedule(&txq->napi);
 802                 napi_schedule(&rxq->napi);
 803         }
 804 }
 805 #endif
 806
 807 static const struct net_device_ops hinic_netdev_ops = {
 808         .ndo_open = hinic_open,
 809         .ndo_stop = hinic_close,
 810         .ndo_change_mtu = hinic_change_mtu,
 811         .ndo_set_mac_address = hinic_set_mac_addr,
 812         .ndo_validate_addr = eth_validate_addr,
 813         .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid,
 814         .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid,
 815         .ndo_set_rx_mode = hinic_set_rx_mode,
 816         .ndo_start_xmit = hinic_xmit_frame,
 817         .ndo_tx_timeout = hinic_tx_timeout,
 818         .ndo_get_stats64 = hinic_get_stats64,
 819 #ifdef CONFIG_NET_POLL_CONTROLLER
 820         .ndo_poll_controller = hinic_netpoll,
 821 #endif
 822 };
 823
 824 static void netdev_features_init(struct net_device *netdev)
 825 {
 826         netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA;
 827
 828         netdev->vlan_features = netdev->hw_features;
 829
 830         netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
 831 }
 832
 833 /**
 834  * link_status_event_handler - link event handler
 835  * @handle: nic device for the handler
 836  * @buf_in: input buffer
 837  * @in_size: input size
 838  * @buf_in: output buffer
 839  * @out_size: returned output size
 840  *
 841  * Return 0 - Success, negative - Failure
 842  **/
 843 static void link_status_event_handler(void *handle, void *buf_in, u16 in_size,
 844                                       void *buf_out, u16 *out_size)
 845 {
 846         struct hinic_port_link_status *link_status, *ret_link_status;
 847         struct hinic_dev *nic_dev = handle;
 848
 849         link_status = buf_in;
 850
 851         if (link_status->link == HINIC_LINK_STATE_UP) {
 852                 down(&nic_dev->mgmt_lock);
 853
 854                 nic_dev->flags |= HINIC_LINK_UP;
 855
 856                 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) ==
 857                     (HINIC_LINK_UP | HINIC_INTF_UP)) {
 858                         netif_carrier_on(nic_dev->netdev);
 859                         netif_tx_wake_all_queues(nic_dev->netdev);
 860                 }
 861
 862                 up(&nic_dev->mgmt_lock);
 863
 864                 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n");
 865         } else {
 866                 down(&nic_dev->mgmt_lock);
 867
 868                 nic_dev->flags &= ~HINIC_LINK_UP;
 869
 870                 netif_carrier_off(nic_dev->netdev);
 871                 netif_tx_disable(nic_dev->netdev);
 872
 873                 up(&nic_dev->mgmt_lock);
 874
 875                 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n");
 876         }
 877
 878         ret_link_status = buf_out;
 879         ret_link_status->status = 0;
 880
 881         *out_size = sizeof(*ret_link_status);
 882 }
 883
 884 /**
 885  * nic_dev_init - Initialize the NIC device
 886  * @pdev: the NIC pci device
 887  *
 888  * Return 0 - Success, negative - Failure
 889  **/
 890 static int nic_dev_init(struct pci_dev *pdev)
 891 {
 892         struct hinic_rx_mode_work *rx_mode_work;
 893         struct hinic_txq_stats *tx_stats;
 894         struct hinic_rxq_stats *rx_stats;
 895         struct hinic_dev *nic_dev;
 896         struct net_device *netdev;
 897         struct hinic_hwdev *hwdev;
 898         int err, num_qps;
 899
 900         hwdev = hinic_init_hwdev(pdev);
 901         if (IS_ERR(hwdev)) {
 902                 dev_err(&pdev->dev, "Failed to initialize HW device\n");
 903                 return PTR_ERR(hwdev);
 904         }
 905
 906         num_qps = hinic_hwdev_num_qps(hwdev);
 907         if (num_qps <= 0) {
 908                 dev_err(&pdev->dev, "Invalid number of QPS\n");
 909                 err = -EINVAL;
 910                 goto err_num_qps;
 911         }
 912
 913         netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps);
 914         if (!netdev) {
 915                 dev_err(&pdev->dev, "Failed to allocate Ethernet device\n");
 916                 err = -ENOMEM;
 917                 goto err_alloc_etherdev;
 918         }
 919
 920         netdev->netdev_ops = &hinic_netdev_ops;
 921         netdev->ethtool_ops = &hinic_ethtool_ops;
 922         netdev->max_mtu = ETH_MAX_MTU;
 923
 924         nic_dev = netdev_priv(netdev);
 925         nic_dev->netdev = netdev;
 926         nic_dev->hwdev  = hwdev;
 927         nic_dev->msg_enable = MSG_ENABLE_DEFAULT;
 928         nic_dev->flags = 0;
 929         nic_dev->txqs = NULL;
 930         nic_dev->rxqs = NULL;
 931         nic_dev->tx_weight = tx_weight;
 932         nic_dev->rx_weight = rx_weight;
 933
 934         sema_init(&nic_dev->mgmt_lock, 1);
 935
 936         tx_stats = &nic_dev->tx_stats;
 937         rx_stats = &nic_dev->rx_stats;
 938
 939         u64_stats_init(&tx_stats->syncp);
 940         u64_stats_init(&rx_stats->syncp);
 941
 942         nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev,
 943                                             VLAN_BITMAP_SIZE(nic_dev),
 944                                             GFP_KERNEL);
 945         if (!nic_dev->vlan_bitmap) {
 946                 err = -ENOMEM;
 947                 goto err_vlan_bitmap;
 948         }
 949
 950         nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME);
 951         if (!nic_dev->workq) {
 952                 err = -ENOMEM;
 953                 goto err_workq;
 954         }
 955
 956         pci_set_drvdata(pdev, netdev);
 957
 958         err = hinic_port_get_mac(nic_dev, netdev->dev_addr);
 959         if (err)
 960                 dev_warn(&pdev->dev, "Failed to get mac address\n");
 961
 962         err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0);
 963         if (err) {
 964                 dev_err(&pdev->dev, "Failed to add mac\n");
 965                 goto err_add_mac;
 966         }
 967
 968         err = hinic_port_set_mtu(nic_dev, netdev->mtu);
 969         if (err) {
 970                 dev_err(&pdev->dev, "Failed to set mtu\n");
 971                 goto err_set_mtu;
 972         }
 973
 974         rx_mode_work = &nic_dev->rx_mode_work;
 975         INIT_WORK(&rx_mode_work->work, set_rx_mode);
 976
 977         netdev_features_init(netdev);
 978
 979         netif_carrier_off(netdev);
 980
 981         hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS,
 982                                 nic_dev, link_status_event_handler);
 983
 984         err = register_netdev(netdev);
 985         if (err) {
 986                 dev_err(&pdev->dev, "Failed to register netdev\n");
 987                 goto err_reg_netdev;
 988         }
 989
 990         return 0;
 991
 992 err_reg_netdev:
 993         hinic_hwdev_cb_unregister(nic_dev->hwdev,
 994                                   HINIC_MGMT_MSG_CMD_LINK_STATUS);
 995         cancel_work_sync(&rx_mode_work->work);
 996
 997 err_set_mtu:
 998 err_add_mac:
 999         pci_set_drvdata(pdev, NULL);
1000         destroy_workqueue(nic_dev->workq);
1001
1002 err_workq:
1003 err_vlan_bitmap:
1004         free_netdev(netdev);
1005
1006 err_alloc_etherdev:
1007 err_num_qps:
1008         hinic_free_hwdev(hwdev);
1009         return err;
1010 }
1011
1012 static int hinic_probe(struct pci_dev *pdev,
1013                        const struct pci_device_id *id)
1014 {
1015         int err = pci_enable_device(pdev);
1016
1017         if (err) {
1018                 dev_err(&pdev->dev, "Failed to enable PCI device\n");
1019                 return err;
1020         }
1021
1022         err = pci_request_regions(pdev, HINIC_DRV_NAME);
1023         if (err) {
1024                 dev_err(&pdev->dev, "Failed to request PCI regions\n");
1025                 goto err_pci_regions;
1026         }
1027
1028         pci_set_master(pdev);
1029
1030         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1031         if (err) {
1032                 dev_warn(&pdev->dev, "Couldn't set 64-bit DMA mask\n");
1033                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1034                 if (err) {
1035                         dev_err(&pdev->dev, "Failed to set DMA mask\n");
1036                         goto err_dma_mask;
1037                 }
1038         }
1039
1040         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1041         if (err) {
1042                 dev_warn(&pdev->dev,
1043                          "Couldn't set 64-bit consistent DMA mask\n");
1044                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1045                 if (err) {
1046                         dev_err(&pdev->dev,
1047                                 "Failed to set consistent DMA mask\n");
1048                         goto err_dma_consistent_mask;
1049                 }
1050         }
1051
1052         err = nic_dev_init(pdev);
1053         if (err) {
1054                 dev_err(&pdev->dev, "Failed to initialize NIC device\n");
1055                 goto err_nic_dev_init;
1056         }
1057
1058         dev_info(&pdev->dev, "HiNIC driver - probed\n");
1059         return 0;
1060
1061 err_nic_dev_init:
1062 err_dma_consistent_mask:
1063 err_dma_mask:
1064         pci_release_regions(pdev);
1065
1066 err_pci_regions:
1067         pci_disable_device(pdev);
1068         return err;
1069 }
1070
1071 static void hinic_remove(struct pci_dev *pdev)
1072 {
1073         struct net_device *netdev = pci_get_drvdata(pdev);
1074         struct hinic_dev *nic_dev = netdev_priv(netdev);
1075         struct hinic_rx_mode_work *rx_mode_work;
1076
1077         unregister_netdev(netdev);
1078
1079         hinic_hwdev_cb_unregister(nic_dev->hwdev,
1080                                   HINIC_MGMT_MSG_CMD_LINK_STATUS);
1081
1082         rx_mode_work = &nic_dev->rx_mode_work;
1083         cancel_work_sync(&rx_mode_work->work);
1084
1085         pci_set_drvdata(pdev, NULL);
1086
1087         destroy_workqueue(nic_dev->workq);
1088
1089         hinic_free_hwdev(nic_dev->hwdev);
1090
1091         free_netdev(netdev);
1092
1093         pci_release_regions(pdev);
1094         pci_disable_device(pdev);
1095
1096         dev_info(&pdev->dev, "HiNIC driver - removed\n");
1097 }
1098
1099 static const struct pci_device_id hinic_pci_table[] = {
1100         { PCI_VDEVICE(HUAWEI, PCI_DEVICE_ID_HI1822_PF), 0},
1101         { 0, 0}
1102 };
1103 MODULE_DEVICE_TABLE(pci, hinic_pci_table);
1104
1105 static struct pci_driver hinic_driver = {
1106         .name           = HINIC_DRV_NAME,
1107         .id_table       = hinic_pci_table,
1108         .probe          = hinic_probe,
1109         .remove         = hinic_remove,
1110 };
1111
1112 module_pci_driver(hinic_driver);