1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Huawei HiNIC PCI Express Linux driver 4 * Copyright(c) 2017 Huawei Technologies Co., Ltd 5 */ 6 7 #include <linux/kernel.h> 8 #include <linux/module.h> 9 #include <linux/moduleparam.h> 10 #include <linux/pci.h> 11 #include <linux/device.h> 12 #include <linux/errno.h> 13 #include <linux/types.h> 14 #include <linux/etherdevice.h> 15 #include <linux/netdevice.h> 16 #include <linux/slab.h> 17 #include <linux/if_vlan.h> 18 #include <linux/semaphore.h> 19 #include <linux/workqueue.h> 20 #include <net/ip.h> 21 #include <linux/bitops.h> 22 #include <linux/bitmap.h> 23 #include <linux/delay.h> 24 #include <linux/err.h> 25 26 #include "hinic_hw_qp.h" 27 #include "hinic_hw_dev.h" 28 #include "hinic_port.h" 29 #include "hinic_tx.h" 30 #include "hinic_rx.h" 31 #include "hinic_dev.h" 32 33 MODULE_AUTHOR("Huawei Technologies CO., Ltd"); 34 MODULE_DESCRIPTION("Huawei Intelligent NIC driver"); 35 MODULE_LICENSE("GPL"); 36 37 static unsigned int tx_weight = 64; 38 module_param(tx_weight, uint, 0644); 39 MODULE_PARM_DESC(tx_weight, "Number Tx packets for NAPI budget (default=64)"); 40 41 static unsigned int rx_weight = 64; 42 module_param(rx_weight, uint, 0644); 43 MODULE_PARM_DESC(rx_weight, "Number Rx packets for NAPI budget (default=64)"); 44 45 #define HINIC_DEV_ID_QUAD_PORT_25GE 0x1822 46 #define HINIC_DEV_ID_DUAL_PORT_100GE 0x0200 47 #define HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ 0x0205 48 #define HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ 0x0210 49 50 #define HINIC_WQ_NAME "hinic_dev" 51 52 #define MSG_ENABLE_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | \ 53 NETIF_MSG_IFUP | \ 54 NETIF_MSG_TX_ERR | NETIF_MSG_RX_ERR) 55 56 #define HINIC_LRO_MAX_WQE_NUM_DEFAULT 8 57 58 #define HINIC_LRO_RX_TIMER_DEFAULT 16 59 60 #define VLAN_BITMAP_SIZE(nic_dev) (ALIGN(VLAN_N_VID, 8) / 8) 61 62 #define work_to_rx_mode_work(work) \ 63 container_of(work, struct hinic_rx_mode_work, work) 64 65 #define rx_mode_work_to_nic_dev(rx_mode_work) \ 66 container_of(rx_mode_work, struct hinic_dev, rx_mode_work) 67 68 static int change_mac_addr(struct net_device *netdev, const u8 *addr); 69 70 static int set_features(struct hinic_dev *nic_dev, 71 netdev_features_t pre_features, 72 netdev_features_t features, bool force_change); 73 74 static void update_rx_stats(struct hinic_dev *nic_dev, struct hinic_rxq *rxq) 75 { 76 struct hinic_rxq_stats *nic_rx_stats = &nic_dev->rx_stats; 77 struct hinic_rxq_stats rx_stats; 78 79 u64_stats_init(&rx_stats.syncp); 80 81 hinic_rxq_get_stats(rxq, &rx_stats); 82 83 u64_stats_update_begin(&nic_rx_stats->syncp); 84 nic_rx_stats->bytes += rx_stats.bytes; 85 nic_rx_stats->pkts += rx_stats.pkts; 86 nic_rx_stats->errors += rx_stats.errors; 87 nic_rx_stats->csum_errors += rx_stats.csum_errors; 88 nic_rx_stats->other_errors += rx_stats.other_errors; 89 u64_stats_update_end(&nic_rx_stats->syncp); 90 91 hinic_rxq_clean_stats(rxq); 92 } 93 94 static void update_tx_stats(struct hinic_dev *nic_dev, struct hinic_txq *txq) 95 { 96 struct hinic_txq_stats *nic_tx_stats = &nic_dev->tx_stats; 97 struct hinic_txq_stats tx_stats; 98 99 u64_stats_init(&tx_stats.syncp); 100 101 hinic_txq_get_stats(txq, &tx_stats); 102 103 u64_stats_update_begin(&nic_tx_stats->syncp); 104 nic_tx_stats->bytes += tx_stats.bytes; 105 nic_tx_stats->pkts += tx_stats.pkts; 106 nic_tx_stats->tx_busy += tx_stats.tx_busy; 107 nic_tx_stats->tx_wake += tx_stats.tx_wake; 108 nic_tx_stats->tx_dropped += tx_stats.tx_dropped; 109 nic_tx_stats->big_frags_pkts += tx_stats.big_frags_pkts; 110 u64_stats_update_end(&nic_tx_stats->syncp); 111 112 hinic_txq_clean_stats(txq); 113 } 114 115 static void update_nic_stats(struct hinic_dev *nic_dev) 116 { 117 int i, num_qps = hinic_hwdev_num_qps(nic_dev->hwdev); 118 119 for (i = 0; i < num_qps; i++) 120 update_rx_stats(nic_dev, &nic_dev->rxqs[i]); 121 122 for (i = 0; i < num_qps; i++) 123 update_tx_stats(nic_dev, &nic_dev->txqs[i]); 124 } 125 126 /** 127 * create_txqs - Create the Logical Tx Queues of specific NIC device 128 * @nic_dev: the specific NIC device 129 * 130 * Return 0 - Success, negative - Failure 131 **/ 132 static int create_txqs(struct hinic_dev *nic_dev) 133 { 134 int err, i, j, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev); 135 struct net_device *netdev = nic_dev->netdev; 136 size_t txq_size; 137 138 if (nic_dev->txqs) 139 return -EINVAL; 140 141 txq_size = num_txqs * sizeof(*nic_dev->txqs); 142 nic_dev->txqs = devm_kzalloc(&netdev->dev, txq_size, GFP_KERNEL); 143 if (!nic_dev->txqs) 144 return -ENOMEM; 145 146 for (i = 0; i < num_txqs; i++) { 147 struct hinic_sq *sq = hinic_hwdev_get_sq(nic_dev->hwdev, i); 148 149 err = hinic_init_txq(&nic_dev->txqs[i], sq, netdev); 150 if (err) { 151 netif_err(nic_dev, drv, netdev, 152 "Failed to init Txq\n"); 153 goto err_init_txq; 154 } 155 } 156 157 return 0; 158 159 err_init_txq: 160 for (j = 0; j < i; j++) 161 hinic_clean_txq(&nic_dev->txqs[j]); 162 163 devm_kfree(&netdev->dev, nic_dev->txqs); 164 return err; 165 } 166 167 /** 168 * free_txqs - Free the Logical Tx Queues of specific NIC device 169 * @nic_dev: the specific NIC device 170 **/ 171 static void free_txqs(struct hinic_dev *nic_dev) 172 { 173 int i, num_txqs = hinic_hwdev_num_qps(nic_dev->hwdev); 174 struct net_device *netdev = nic_dev->netdev; 175 176 if (!nic_dev->txqs) 177 return; 178 179 for (i = 0; i < num_txqs; i++) 180 hinic_clean_txq(&nic_dev->txqs[i]); 181 182 devm_kfree(&netdev->dev, nic_dev->txqs); 183 nic_dev->txqs = NULL; 184 } 185 186 /** 187 * create_txqs - Create the Logical Rx Queues of specific NIC device 188 * @nic_dev: the specific NIC device 189 * 190 * Return 0 - Success, negative - Failure 191 **/ 192 static int create_rxqs(struct hinic_dev *nic_dev) 193 { 194 int err, i, j, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev); 195 struct net_device *netdev = nic_dev->netdev; 196 size_t rxq_size; 197 198 if (nic_dev->rxqs) 199 return -EINVAL; 200 201 rxq_size = num_rxqs * sizeof(*nic_dev->rxqs); 202 nic_dev->rxqs = devm_kzalloc(&netdev->dev, rxq_size, GFP_KERNEL); 203 if (!nic_dev->rxqs) 204 return -ENOMEM; 205 206 for (i = 0; i < num_rxqs; i++) { 207 struct hinic_rq *rq = hinic_hwdev_get_rq(nic_dev->hwdev, i); 208 209 err = hinic_init_rxq(&nic_dev->rxqs[i], rq, netdev); 210 if (err) { 211 netif_err(nic_dev, drv, netdev, 212 "Failed to init rxq\n"); 213 goto err_init_rxq; 214 } 215 } 216 217 return 0; 218 219 err_init_rxq: 220 for (j = 0; j < i; j++) 221 hinic_clean_rxq(&nic_dev->rxqs[j]); 222 223 devm_kfree(&netdev->dev, nic_dev->rxqs); 224 return err; 225 } 226 227 /** 228 * free_txqs - Free the Logical Rx Queues of specific NIC device 229 * @nic_dev: the specific NIC device 230 **/ 231 static void free_rxqs(struct hinic_dev *nic_dev) 232 { 233 int i, num_rxqs = hinic_hwdev_num_qps(nic_dev->hwdev); 234 struct net_device *netdev = nic_dev->netdev; 235 236 if (!nic_dev->rxqs) 237 return; 238 239 for (i = 0; i < num_rxqs; i++) 240 hinic_clean_rxq(&nic_dev->rxqs[i]); 241 242 devm_kfree(&netdev->dev, nic_dev->rxqs); 243 nic_dev->rxqs = NULL; 244 } 245 246 static int hinic_configure_max_qnum(struct hinic_dev *nic_dev) 247 { 248 int err; 249 250 err = hinic_set_max_qnum(nic_dev, nic_dev->hwdev->nic_cap.max_qps); 251 if (err) 252 return err; 253 254 return 0; 255 } 256 257 static int hinic_rss_init(struct hinic_dev *nic_dev) 258 { 259 u8 default_rss_key[HINIC_RSS_KEY_SIZE]; 260 u8 tmpl_idx = nic_dev->rss_tmpl_idx; 261 u32 *indir_tbl; 262 int err, i; 263 264 indir_tbl = kcalloc(HINIC_RSS_INDIR_SIZE, sizeof(u32), GFP_KERNEL); 265 if (!indir_tbl) 266 return -ENOMEM; 267 268 netdev_rss_key_fill(default_rss_key, sizeof(default_rss_key)); 269 for (i = 0; i < HINIC_RSS_INDIR_SIZE; i++) 270 indir_tbl[i] = ethtool_rxfh_indir_default(i, nic_dev->num_rss); 271 272 err = hinic_rss_set_template_tbl(nic_dev, tmpl_idx, default_rss_key); 273 if (err) 274 goto out; 275 276 err = hinic_rss_set_indir_tbl(nic_dev, tmpl_idx, indir_tbl); 277 if (err) 278 goto out; 279 280 err = hinic_set_rss_type(nic_dev, tmpl_idx, nic_dev->rss_type); 281 if (err) 282 goto out; 283 284 err = hinic_rss_set_hash_engine(nic_dev, tmpl_idx, 285 nic_dev->rss_hash_engine); 286 if (err) 287 goto out; 288 289 err = hinic_rss_cfg(nic_dev, 1, tmpl_idx); 290 if (err) 291 goto out; 292 293 out: 294 kfree(indir_tbl); 295 return err; 296 } 297 298 static void hinic_rss_deinit(struct hinic_dev *nic_dev) 299 { 300 hinic_rss_cfg(nic_dev, 0, nic_dev->rss_tmpl_idx); 301 } 302 303 static void hinic_init_rss_parameters(struct hinic_dev *nic_dev) 304 { 305 nic_dev->rss_hash_engine = HINIC_RSS_HASH_ENGINE_TYPE_XOR; 306 nic_dev->rss_type.tcp_ipv6_ext = 1; 307 nic_dev->rss_type.ipv6_ext = 1; 308 nic_dev->rss_type.tcp_ipv6 = 1; 309 nic_dev->rss_type.ipv6 = 1; 310 nic_dev->rss_type.tcp_ipv4 = 1; 311 nic_dev->rss_type.ipv4 = 1; 312 nic_dev->rss_type.udp_ipv6 = 1; 313 nic_dev->rss_type.udp_ipv4 = 1; 314 } 315 316 static void hinic_enable_rss(struct hinic_dev *nic_dev) 317 { 318 struct net_device *netdev = nic_dev->netdev; 319 struct hinic_hwdev *hwdev = nic_dev->hwdev; 320 struct hinic_hwif *hwif = hwdev->hwif; 321 struct pci_dev *pdev = hwif->pdev; 322 int i, node, err = 0; 323 u16 num_cpus = 0; 324 325 nic_dev->max_qps = hinic_hwdev_max_num_qps(hwdev); 326 if (nic_dev->max_qps <= 1) { 327 nic_dev->flags &= ~HINIC_RSS_ENABLE; 328 nic_dev->rss_limit = nic_dev->max_qps; 329 nic_dev->num_qps = nic_dev->max_qps; 330 nic_dev->num_rss = nic_dev->max_qps; 331 332 return; 333 } 334 335 err = hinic_rss_template_alloc(nic_dev, &nic_dev->rss_tmpl_idx); 336 if (err) { 337 netif_err(nic_dev, drv, netdev, 338 "Failed to alloc tmpl_idx for rss, can't enable rss for this function\n"); 339 nic_dev->flags &= ~HINIC_RSS_ENABLE; 340 nic_dev->max_qps = 1; 341 nic_dev->rss_limit = nic_dev->max_qps; 342 nic_dev->num_qps = nic_dev->max_qps; 343 nic_dev->num_rss = nic_dev->max_qps; 344 345 return; 346 } 347 348 nic_dev->flags |= HINIC_RSS_ENABLE; 349 350 for (i = 0; i < num_online_cpus(); i++) { 351 node = cpu_to_node(i); 352 if (node == dev_to_node(&pdev->dev)) 353 num_cpus++; 354 } 355 356 if (!num_cpus) 357 num_cpus = num_online_cpus(); 358 359 nic_dev->num_qps = min_t(u16, nic_dev->max_qps, num_cpus); 360 361 nic_dev->rss_limit = nic_dev->num_qps; 362 nic_dev->num_rss = nic_dev->num_qps; 363 364 hinic_init_rss_parameters(nic_dev); 365 err = hinic_rss_init(nic_dev); 366 if (err) 367 netif_err(nic_dev, drv, netdev, "Failed to init rss\n"); 368 } 369 370 static int hinic_open(struct net_device *netdev) 371 { 372 struct hinic_dev *nic_dev = netdev_priv(netdev); 373 enum hinic_port_link_state link_state; 374 int err, ret; 375 376 if (!(nic_dev->flags & HINIC_INTF_UP)) { 377 err = hinic_hwdev_ifup(nic_dev->hwdev); 378 if (err) { 379 netif_err(nic_dev, drv, netdev, 380 "Failed - HW interface up\n"); 381 return err; 382 } 383 } 384 385 err = create_txqs(nic_dev); 386 if (err) { 387 netif_err(nic_dev, drv, netdev, 388 "Failed to create Tx queues\n"); 389 goto err_create_txqs; 390 } 391 392 err = create_rxqs(nic_dev); 393 if (err) { 394 netif_err(nic_dev, drv, netdev, 395 "Failed to create Rx queues\n"); 396 goto err_create_rxqs; 397 } 398 399 hinic_enable_rss(nic_dev); 400 401 err = hinic_configure_max_qnum(nic_dev); 402 if (err) { 403 netif_err(nic_dev, drv, nic_dev->netdev, 404 "Failed to configure the maximum number of queues\n"); 405 goto err_port_state; 406 } 407 408 netif_set_real_num_tx_queues(netdev, nic_dev->num_qps); 409 netif_set_real_num_rx_queues(netdev, nic_dev->num_qps); 410 411 err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE); 412 if (err) { 413 netif_err(nic_dev, drv, netdev, 414 "Failed to set port state\n"); 415 goto err_port_state; 416 } 417 418 err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE); 419 if (err) { 420 netif_err(nic_dev, drv, netdev, 421 "Failed to set func port state\n"); 422 goto err_func_port_state; 423 } 424 425 /* Wait up to 3 sec between port enable to link state */ 426 msleep(3000); 427 428 down(&nic_dev->mgmt_lock); 429 430 err = hinic_port_link_state(nic_dev, &link_state); 431 if (err) { 432 netif_err(nic_dev, drv, netdev, "Failed to get link state\n"); 433 goto err_port_link; 434 } 435 436 if (link_state == HINIC_LINK_STATE_UP) 437 nic_dev->flags |= HINIC_LINK_UP; 438 439 nic_dev->flags |= HINIC_INTF_UP; 440 441 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) == 442 (HINIC_LINK_UP | HINIC_INTF_UP)) { 443 netif_info(nic_dev, drv, netdev, "link + intf UP\n"); 444 netif_carrier_on(netdev); 445 netif_tx_wake_all_queues(netdev); 446 } 447 448 up(&nic_dev->mgmt_lock); 449 450 netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n"); 451 return 0; 452 453 err_port_link: 454 up(&nic_dev->mgmt_lock); 455 ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE); 456 if (ret) 457 netif_warn(nic_dev, drv, netdev, 458 "Failed to revert func port state\n"); 459 460 err_func_port_state: 461 ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE); 462 if (ret) 463 netif_warn(nic_dev, drv, netdev, 464 "Failed to revert port state\n"); 465 err_port_state: 466 free_rxqs(nic_dev); 467 if (nic_dev->flags & HINIC_RSS_ENABLE) { 468 hinic_rss_deinit(nic_dev); 469 hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx); 470 } 471 472 err_create_rxqs: 473 free_txqs(nic_dev); 474 475 err_create_txqs: 476 if (!(nic_dev->flags & HINIC_INTF_UP)) 477 hinic_hwdev_ifdown(nic_dev->hwdev); 478 return err; 479 } 480 481 static int hinic_close(struct net_device *netdev) 482 { 483 struct hinic_dev *nic_dev = netdev_priv(netdev); 484 unsigned int flags; 485 int err; 486 487 down(&nic_dev->mgmt_lock); 488 489 flags = nic_dev->flags; 490 nic_dev->flags &= ~HINIC_INTF_UP; 491 492 netif_carrier_off(netdev); 493 netif_tx_disable(netdev); 494 495 update_nic_stats(nic_dev); 496 497 up(&nic_dev->mgmt_lock); 498 499 err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE); 500 if (err) { 501 netif_err(nic_dev, drv, netdev, 502 "Failed to set func port state\n"); 503 nic_dev->flags |= (flags & HINIC_INTF_UP); 504 return err; 505 } 506 507 err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE); 508 if (err) { 509 netif_err(nic_dev, drv, netdev, "Failed to set port state\n"); 510 nic_dev->flags |= (flags & HINIC_INTF_UP); 511 return err; 512 } 513 514 if (nic_dev->flags & HINIC_RSS_ENABLE) { 515 hinic_rss_deinit(nic_dev); 516 hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx); 517 } 518 519 free_rxqs(nic_dev); 520 free_txqs(nic_dev); 521 522 if (flags & HINIC_INTF_UP) 523 hinic_hwdev_ifdown(nic_dev->hwdev); 524 525 netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n"); 526 return 0; 527 } 528 529 static int hinic_change_mtu(struct net_device *netdev, int new_mtu) 530 { 531 struct hinic_dev *nic_dev = netdev_priv(netdev); 532 int err; 533 534 netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu); 535 536 err = hinic_port_set_mtu(nic_dev, new_mtu); 537 if (err) 538 netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n"); 539 else 540 netdev->mtu = new_mtu; 541 542 return err; 543 } 544 545 /** 546 * change_mac_addr - change the main mac address of network device 547 * @netdev: network device 548 * @addr: mac address to set 549 * 550 * Return 0 - Success, negative - Failure 551 **/ 552 static int change_mac_addr(struct net_device *netdev, const u8 *addr) 553 { 554 struct hinic_dev *nic_dev = netdev_priv(netdev); 555 u16 vid = 0; 556 int err; 557 558 if (!is_valid_ether_addr(addr)) 559 return -EADDRNOTAVAIL; 560 561 netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n", 562 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 563 564 down(&nic_dev->mgmt_lock); 565 566 do { 567 err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid); 568 if (err) { 569 netif_err(nic_dev, drv, netdev, 570 "Failed to delete mac\n"); 571 break; 572 } 573 574 err = hinic_port_add_mac(nic_dev, addr, vid); 575 if (err) { 576 netif_err(nic_dev, drv, netdev, "Failed to add mac\n"); 577 break; 578 } 579 580 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1); 581 } while (vid != VLAN_N_VID); 582 583 up(&nic_dev->mgmt_lock); 584 return err; 585 } 586 587 static int hinic_set_mac_addr(struct net_device *netdev, void *addr) 588 { 589 unsigned char new_mac[ETH_ALEN]; 590 struct sockaddr *saddr = addr; 591 int err; 592 593 memcpy(new_mac, saddr->sa_data, ETH_ALEN); 594 595 err = change_mac_addr(netdev, new_mac); 596 if (!err) 597 memcpy(netdev->dev_addr, new_mac, ETH_ALEN); 598 599 return err; 600 } 601 602 /** 603 * add_mac_addr - add mac address to network device 604 * @netdev: network device 605 * @addr: mac address to add 606 * 607 * Return 0 - Success, negative - Failure 608 **/ 609 static int add_mac_addr(struct net_device *netdev, const u8 *addr) 610 { 611 struct hinic_dev *nic_dev = netdev_priv(netdev); 612 u16 vid = 0; 613 int err; 614 615 netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n", 616 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 617 618 down(&nic_dev->mgmt_lock); 619 620 do { 621 err = hinic_port_add_mac(nic_dev, addr, vid); 622 if (err) { 623 netif_err(nic_dev, drv, netdev, "Failed to add mac\n"); 624 break; 625 } 626 627 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1); 628 } while (vid != VLAN_N_VID); 629 630 up(&nic_dev->mgmt_lock); 631 return err; 632 } 633 634 /** 635 * remove_mac_addr - remove mac address from network device 636 * @netdev: network device 637 * @addr: mac address to remove 638 * 639 * Return 0 - Success, negative - Failure 640 **/ 641 static int remove_mac_addr(struct net_device *netdev, const u8 *addr) 642 { 643 struct hinic_dev *nic_dev = netdev_priv(netdev); 644 u16 vid = 0; 645 int err; 646 647 if (!is_valid_ether_addr(addr)) 648 return -EADDRNOTAVAIL; 649 650 netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n", 651 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 652 653 down(&nic_dev->mgmt_lock); 654 655 do { 656 err = hinic_port_del_mac(nic_dev, addr, vid); 657 if (err) { 658 netif_err(nic_dev, drv, netdev, 659 "Failed to delete mac\n"); 660 break; 661 } 662 663 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1); 664 } while (vid != VLAN_N_VID); 665 666 up(&nic_dev->mgmt_lock); 667 return err; 668 } 669 670 static int hinic_vlan_rx_add_vid(struct net_device *netdev, 671 __always_unused __be16 proto, u16 vid) 672 { 673 struct hinic_dev *nic_dev = netdev_priv(netdev); 674 int ret, err; 675 676 netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid); 677 678 down(&nic_dev->mgmt_lock); 679 680 err = hinic_port_add_vlan(nic_dev, vid); 681 if (err) { 682 netif_err(nic_dev, drv, netdev, "Failed to add vlan\n"); 683 goto err_vlan_add; 684 } 685 686 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid); 687 if (err) { 688 netif_err(nic_dev, drv, netdev, "Failed to set mac\n"); 689 goto err_add_mac; 690 } 691 692 bitmap_set(nic_dev->vlan_bitmap, vid, 1); 693 694 up(&nic_dev->mgmt_lock); 695 return 0; 696 697 err_add_mac: 698 ret = hinic_port_del_vlan(nic_dev, vid); 699 if (ret) 700 netif_err(nic_dev, drv, netdev, 701 "Failed to revert by removing vlan\n"); 702 703 err_vlan_add: 704 up(&nic_dev->mgmt_lock); 705 return err; 706 } 707 708 static int hinic_vlan_rx_kill_vid(struct net_device *netdev, 709 __always_unused __be16 proto, u16 vid) 710 { 711 struct hinic_dev *nic_dev = netdev_priv(netdev); 712 int err; 713 714 netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid); 715 716 down(&nic_dev->mgmt_lock); 717 718 err = hinic_port_del_vlan(nic_dev, vid); 719 if (err) { 720 netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n"); 721 goto err_del_vlan; 722 } 723 724 bitmap_clear(nic_dev->vlan_bitmap, vid, 1); 725 726 up(&nic_dev->mgmt_lock); 727 return 0; 728 729 err_del_vlan: 730 up(&nic_dev->mgmt_lock); 731 return err; 732 } 733 734 static void set_rx_mode(struct work_struct *work) 735 { 736 struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work); 737 struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work); 738 739 netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n"); 740 741 hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode); 742 743 __dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr); 744 __dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr); 745 } 746 747 static void hinic_set_rx_mode(struct net_device *netdev) 748 { 749 struct hinic_dev *nic_dev = netdev_priv(netdev); 750 struct hinic_rx_mode_work *rx_mode_work; 751 u32 rx_mode; 752 753 rx_mode_work = &nic_dev->rx_mode_work; 754 755 rx_mode = HINIC_RX_MODE_UC | 756 HINIC_RX_MODE_MC | 757 HINIC_RX_MODE_BC; 758 759 if (netdev->flags & IFF_PROMISC) 760 rx_mode |= HINIC_RX_MODE_PROMISC; 761 else if (netdev->flags & IFF_ALLMULTI) 762 rx_mode |= HINIC_RX_MODE_MC_ALL; 763 764 rx_mode_work->rx_mode = rx_mode; 765 766 queue_work(nic_dev->workq, &rx_mode_work->work); 767 } 768 769 static void hinic_tx_timeout(struct net_device *netdev) 770 { 771 struct hinic_dev *nic_dev = netdev_priv(netdev); 772 773 netif_err(nic_dev, drv, netdev, "Tx timeout\n"); 774 } 775 776 static void hinic_get_stats64(struct net_device *netdev, 777 struct rtnl_link_stats64 *stats) 778 { 779 struct hinic_dev *nic_dev = netdev_priv(netdev); 780 struct hinic_rxq_stats *nic_rx_stats; 781 struct hinic_txq_stats *nic_tx_stats; 782 783 nic_rx_stats = &nic_dev->rx_stats; 784 nic_tx_stats = &nic_dev->tx_stats; 785 786 down(&nic_dev->mgmt_lock); 787 788 if (nic_dev->flags & HINIC_INTF_UP) 789 update_nic_stats(nic_dev); 790 791 up(&nic_dev->mgmt_lock); 792 793 stats->rx_bytes = nic_rx_stats->bytes; 794 stats->rx_packets = nic_rx_stats->pkts; 795 stats->rx_errors = nic_rx_stats->errors; 796 797 stats->tx_bytes = nic_tx_stats->bytes; 798 stats->tx_packets = nic_tx_stats->pkts; 799 stats->tx_errors = nic_tx_stats->tx_dropped; 800 } 801 802 static int hinic_set_features(struct net_device *netdev, 803 netdev_features_t features) 804 { 805 struct hinic_dev *nic_dev = netdev_priv(netdev); 806 807 return set_features(nic_dev, nic_dev->netdev->features, 808 features, false); 809 } 810 811 static netdev_features_t hinic_fix_features(struct net_device *netdev, 812 netdev_features_t features) 813 { 814 struct hinic_dev *nic_dev = netdev_priv(netdev); 815 816 /* If Rx checksum is disabled, then LRO should also be disabled */ 817 if (!(features & NETIF_F_RXCSUM)) { 818 netif_info(nic_dev, drv, netdev, "disabling LRO as RXCSUM is off\n"); 819 features &= ~NETIF_F_LRO; 820 } 821 822 return features; 823 } 824 825 static const struct net_device_ops hinic_netdev_ops = { 826 .ndo_open = hinic_open, 827 .ndo_stop = hinic_close, 828 .ndo_change_mtu = hinic_change_mtu, 829 .ndo_set_mac_address = hinic_set_mac_addr, 830 .ndo_validate_addr = eth_validate_addr, 831 .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid, 832 .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid, 833 .ndo_set_rx_mode = hinic_set_rx_mode, 834 .ndo_start_xmit = hinic_xmit_frame, 835 .ndo_tx_timeout = hinic_tx_timeout, 836 .ndo_get_stats64 = hinic_get_stats64, 837 .ndo_fix_features = hinic_fix_features, 838 .ndo_set_features = hinic_set_features, 839 }; 840 841 static void netdev_features_init(struct net_device *netdev) 842 { 843 netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | 844 NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 | 845 NETIF_F_RXCSUM | NETIF_F_LRO | 846 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 847 848 netdev->vlan_features = netdev->hw_features; 849 850 netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER; 851 } 852 853 /** 854 * link_status_event_handler - link event handler 855 * @handle: nic device for the handler 856 * @buf_in: input buffer 857 * @in_size: input size 858 * @buf_in: output buffer 859 * @out_size: returned output size 860 * 861 * Return 0 - Success, negative - Failure 862 **/ 863 static void link_status_event_handler(void *handle, void *buf_in, u16 in_size, 864 void *buf_out, u16 *out_size) 865 { 866 struct hinic_port_link_status *link_status, *ret_link_status; 867 struct hinic_dev *nic_dev = handle; 868 869 link_status = buf_in; 870 871 if (link_status->link == HINIC_LINK_STATE_UP) { 872 down(&nic_dev->mgmt_lock); 873 874 nic_dev->flags |= HINIC_LINK_UP; 875 876 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) == 877 (HINIC_LINK_UP | HINIC_INTF_UP)) { 878 netif_carrier_on(nic_dev->netdev); 879 netif_tx_wake_all_queues(nic_dev->netdev); 880 } 881 882 up(&nic_dev->mgmt_lock); 883 884 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n"); 885 } else { 886 down(&nic_dev->mgmt_lock); 887 888 nic_dev->flags &= ~HINIC_LINK_UP; 889 890 netif_carrier_off(nic_dev->netdev); 891 netif_tx_disable(nic_dev->netdev); 892 893 up(&nic_dev->mgmt_lock); 894 895 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n"); 896 } 897 898 ret_link_status = buf_out; 899 ret_link_status->status = 0; 900 901 *out_size = sizeof(*ret_link_status); 902 } 903 904 static int set_features(struct hinic_dev *nic_dev, 905 netdev_features_t pre_features, 906 netdev_features_t features, bool force_change) 907 { 908 netdev_features_t changed = force_change ? ~0 : pre_features ^ features; 909 u32 csum_en = HINIC_RX_CSUM_OFFLOAD_EN; 910 int err = 0; 911 912 if (changed & NETIF_F_TSO) 913 err = hinic_port_set_tso(nic_dev, (features & NETIF_F_TSO) ? 914 HINIC_TSO_ENABLE : HINIC_TSO_DISABLE); 915 916 if (changed & NETIF_F_RXCSUM) 917 err = hinic_set_rx_csum_offload(nic_dev, csum_en); 918 919 if (changed & NETIF_F_LRO) { 920 err = hinic_set_rx_lro_state(nic_dev, 921 !!(features & NETIF_F_LRO), 922 HINIC_LRO_RX_TIMER_DEFAULT, 923 HINIC_LRO_MAX_WQE_NUM_DEFAULT); 924 } 925 926 if (changed & NETIF_F_HW_VLAN_CTAG_RX) 927 err = hinic_set_rx_vlan_offload(nic_dev, 928 !!(features & 929 NETIF_F_HW_VLAN_CTAG_RX)); 930 931 return err; 932 } 933 934 /** 935 * nic_dev_init - Initialize the NIC device 936 * @pdev: the NIC pci device 937 * 938 * Return 0 - Success, negative - Failure 939 **/ 940 static int nic_dev_init(struct pci_dev *pdev) 941 { 942 struct hinic_rx_mode_work *rx_mode_work; 943 struct hinic_txq_stats *tx_stats; 944 struct hinic_rxq_stats *rx_stats; 945 struct hinic_dev *nic_dev; 946 struct net_device *netdev; 947 struct hinic_hwdev *hwdev; 948 int err, num_qps; 949 950 hwdev = hinic_init_hwdev(pdev); 951 if (IS_ERR(hwdev)) { 952 dev_err(&pdev->dev, "Failed to initialize HW device\n"); 953 return PTR_ERR(hwdev); 954 } 955 956 num_qps = hinic_hwdev_num_qps(hwdev); 957 if (num_qps <= 0) { 958 dev_err(&pdev->dev, "Invalid number of QPS\n"); 959 err = -EINVAL; 960 goto err_num_qps; 961 } 962 963 netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps); 964 if (!netdev) { 965 dev_err(&pdev->dev, "Failed to allocate Ethernet device\n"); 966 err = -ENOMEM; 967 goto err_alloc_etherdev; 968 } 969 970 hinic_set_ethtool_ops(netdev); 971 netdev->netdev_ops = &hinic_netdev_ops; 972 netdev->max_mtu = ETH_MAX_MTU; 973 974 nic_dev = netdev_priv(netdev); 975 nic_dev->netdev = netdev; 976 nic_dev->hwdev = hwdev; 977 nic_dev->msg_enable = MSG_ENABLE_DEFAULT; 978 nic_dev->flags = 0; 979 nic_dev->txqs = NULL; 980 nic_dev->rxqs = NULL; 981 nic_dev->tx_weight = tx_weight; 982 nic_dev->rx_weight = rx_weight; 983 984 sema_init(&nic_dev->mgmt_lock, 1); 985 986 tx_stats = &nic_dev->tx_stats; 987 rx_stats = &nic_dev->rx_stats; 988 989 u64_stats_init(&tx_stats->syncp); 990 u64_stats_init(&rx_stats->syncp); 991 992 nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev, 993 VLAN_BITMAP_SIZE(nic_dev), 994 GFP_KERNEL); 995 if (!nic_dev->vlan_bitmap) { 996 err = -ENOMEM; 997 goto err_vlan_bitmap; 998 } 999 1000 nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME); 1001 if (!nic_dev->workq) { 1002 err = -ENOMEM; 1003 goto err_workq; 1004 } 1005 1006 pci_set_drvdata(pdev, netdev); 1007 1008 err = hinic_port_get_mac(nic_dev, netdev->dev_addr); 1009 if (err) 1010 dev_warn(&pdev->dev, "Failed to get mac address\n"); 1011 1012 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0); 1013 if (err) { 1014 dev_err(&pdev->dev, "Failed to add mac\n"); 1015 goto err_add_mac; 1016 } 1017 1018 err = hinic_port_set_mtu(nic_dev, netdev->mtu); 1019 if (err) { 1020 dev_err(&pdev->dev, "Failed to set mtu\n"); 1021 goto err_set_mtu; 1022 } 1023 1024 rx_mode_work = &nic_dev->rx_mode_work; 1025 INIT_WORK(&rx_mode_work->work, set_rx_mode); 1026 1027 netdev_features_init(netdev); 1028 1029 netif_carrier_off(netdev); 1030 1031 hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS, 1032 nic_dev, link_status_event_handler); 1033 1034 err = set_features(nic_dev, 0, nic_dev->netdev->features, true); 1035 if (err) 1036 goto err_set_features; 1037 1038 SET_NETDEV_DEV(netdev, &pdev->dev); 1039 1040 err = register_netdev(netdev); 1041 if (err) { 1042 dev_err(&pdev->dev, "Failed to register netdev\n"); 1043 goto err_reg_netdev; 1044 } 1045 1046 return 0; 1047 1048 err_reg_netdev: 1049 err_set_features: 1050 hinic_hwdev_cb_unregister(nic_dev->hwdev, 1051 HINIC_MGMT_MSG_CMD_LINK_STATUS); 1052 cancel_work_sync(&rx_mode_work->work); 1053 1054 err_set_mtu: 1055 err_add_mac: 1056 pci_set_drvdata(pdev, NULL); 1057 destroy_workqueue(nic_dev->workq); 1058 1059 err_workq: 1060 err_vlan_bitmap: 1061 free_netdev(netdev); 1062 1063 err_alloc_etherdev: 1064 err_num_qps: 1065 hinic_free_hwdev(hwdev); 1066 return err; 1067 } 1068 1069 static int hinic_probe(struct pci_dev *pdev, 1070 const struct pci_device_id *id) 1071 { 1072 int err = pci_enable_device(pdev); 1073 1074 if (err) { 1075 dev_err(&pdev->dev, "Failed to enable PCI device\n"); 1076 return err; 1077 } 1078 1079 err = pci_request_regions(pdev, HINIC_DRV_NAME); 1080 if (err) { 1081 dev_err(&pdev->dev, "Failed to request PCI regions\n"); 1082 goto err_pci_regions; 1083 } 1084 1085 pci_set_master(pdev); 1086 1087 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 1088 if (err) { 1089 dev_warn(&pdev->dev, "Couldn't set 64-bit DMA mask\n"); 1090 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 1091 if (err) { 1092 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 1093 goto err_dma_mask; 1094 } 1095 } 1096 1097 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); 1098 if (err) { 1099 dev_warn(&pdev->dev, 1100 "Couldn't set 64-bit consistent DMA mask\n"); 1101 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 1102 if (err) { 1103 dev_err(&pdev->dev, 1104 "Failed to set consistent DMA mask\n"); 1105 goto err_dma_consistent_mask; 1106 } 1107 } 1108 1109 err = nic_dev_init(pdev); 1110 if (err) { 1111 dev_err(&pdev->dev, "Failed to initialize NIC device\n"); 1112 goto err_nic_dev_init; 1113 } 1114 1115 dev_info(&pdev->dev, "HiNIC driver - probed\n"); 1116 return 0; 1117 1118 err_nic_dev_init: 1119 err_dma_consistent_mask: 1120 err_dma_mask: 1121 pci_release_regions(pdev); 1122 1123 err_pci_regions: 1124 pci_disable_device(pdev); 1125 return err; 1126 } 1127 1128 static void hinic_remove(struct pci_dev *pdev) 1129 { 1130 struct net_device *netdev = pci_get_drvdata(pdev); 1131 struct hinic_dev *nic_dev = netdev_priv(netdev); 1132 struct hinic_rx_mode_work *rx_mode_work; 1133 1134 unregister_netdev(netdev); 1135 1136 hinic_hwdev_cb_unregister(nic_dev->hwdev, 1137 HINIC_MGMT_MSG_CMD_LINK_STATUS); 1138 1139 rx_mode_work = &nic_dev->rx_mode_work; 1140 cancel_work_sync(&rx_mode_work->work); 1141 1142 pci_set_drvdata(pdev, NULL); 1143 1144 destroy_workqueue(nic_dev->workq); 1145 1146 hinic_free_hwdev(nic_dev->hwdev); 1147 1148 free_netdev(netdev); 1149 1150 pci_release_regions(pdev); 1151 pci_disable_device(pdev); 1152 1153 dev_info(&pdev->dev, "HiNIC driver - removed\n"); 1154 } 1155 1156 static void hinic_shutdown(struct pci_dev *pdev) 1157 { 1158 pci_disable_device(pdev); 1159 } 1160 1161 static const struct pci_device_id hinic_pci_table[] = { 1162 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE), 0}, 1163 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE), 0}, 1164 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ), 0}, 1165 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ), 0}, 1166 { 0, 0} 1167 }; 1168 MODULE_DEVICE_TABLE(pci, hinic_pci_table); 1169 1170 static struct pci_driver hinic_driver = { 1171 .name = HINIC_DRV_NAME, 1172 .id_table = hinic_pci_table, 1173 .probe = hinic_probe, 1174 .remove = hinic_remove, 1175 .shutdown = hinic_shutdown, 1176 }; 1177 1178 module_pci_driver(hinic_driver); 1179