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); 1113