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); 1133