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 = hinic_hwdev_num_qps(hwdev); 360 nic_dev->num_qps = min_t(u16, nic_dev->num_qps, num_cpus); 361 362 nic_dev->rss_limit = nic_dev->num_qps; 363 nic_dev->num_rss = nic_dev->num_qps; 364 365 hinic_init_rss_parameters(nic_dev); 366 err = hinic_rss_init(nic_dev); 367 if (err) 368 netif_err(nic_dev, drv, netdev, "Failed to init rss\n"); 369 } 370 371 static int hinic_open(struct net_device *netdev) 372 { 373 struct hinic_dev *nic_dev = netdev_priv(netdev); 374 enum hinic_port_link_state link_state; 375 int err, ret; 376 377 if (!(nic_dev->flags & HINIC_INTF_UP)) { 378 err = hinic_hwdev_ifup(nic_dev->hwdev); 379 if (err) { 380 netif_err(nic_dev, drv, netdev, 381 "Failed - HW interface up\n"); 382 return err; 383 } 384 } 385 386 err = create_txqs(nic_dev); 387 if (err) { 388 netif_err(nic_dev, drv, netdev, 389 "Failed to create Tx queues\n"); 390 goto err_create_txqs; 391 } 392 393 err = create_rxqs(nic_dev); 394 if (err) { 395 netif_err(nic_dev, drv, netdev, 396 "Failed to create Rx queues\n"); 397 goto err_create_rxqs; 398 } 399 400 hinic_enable_rss(nic_dev); 401 402 err = hinic_configure_max_qnum(nic_dev); 403 if (err) { 404 netif_err(nic_dev, drv, nic_dev->netdev, 405 "Failed to configure the maximum number of queues\n"); 406 goto err_port_state; 407 } 408 409 netif_set_real_num_tx_queues(netdev, nic_dev->num_qps); 410 netif_set_real_num_rx_queues(netdev, nic_dev->num_qps); 411 412 err = hinic_port_set_state(nic_dev, HINIC_PORT_ENABLE); 413 if (err) { 414 netif_err(nic_dev, drv, netdev, 415 "Failed to set port state\n"); 416 goto err_port_state; 417 } 418 419 err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_ENABLE); 420 if (err) { 421 netif_err(nic_dev, drv, netdev, 422 "Failed to set func port state\n"); 423 goto err_func_port_state; 424 } 425 426 /* Wait up to 3 sec between port enable to link state */ 427 msleep(3000); 428 429 down(&nic_dev->mgmt_lock); 430 431 err = hinic_port_link_state(nic_dev, &link_state); 432 if (err) { 433 netif_err(nic_dev, drv, netdev, "Failed to get link state\n"); 434 goto err_port_link; 435 } 436 437 if (link_state == HINIC_LINK_STATE_UP) 438 nic_dev->flags |= HINIC_LINK_UP; 439 440 nic_dev->flags |= HINIC_INTF_UP; 441 442 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) == 443 (HINIC_LINK_UP | HINIC_INTF_UP)) { 444 netif_info(nic_dev, drv, netdev, "link + intf UP\n"); 445 netif_carrier_on(netdev); 446 netif_tx_wake_all_queues(netdev); 447 } 448 449 up(&nic_dev->mgmt_lock); 450 451 netif_info(nic_dev, drv, netdev, "HINIC_INTF is UP\n"); 452 return 0; 453 454 err_port_link: 455 up(&nic_dev->mgmt_lock); 456 ret = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE); 457 if (ret) 458 netif_warn(nic_dev, drv, netdev, 459 "Failed to revert func port state\n"); 460 461 err_func_port_state: 462 ret = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE); 463 if (ret) 464 netif_warn(nic_dev, drv, netdev, 465 "Failed to revert port state\n"); 466 err_port_state: 467 free_rxqs(nic_dev); 468 if (nic_dev->flags & HINIC_RSS_ENABLE) { 469 hinic_rss_deinit(nic_dev); 470 hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx); 471 } 472 473 err_create_rxqs: 474 free_txqs(nic_dev); 475 476 err_create_txqs: 477 if (!(nic_dev->flags & HINIC_INTF_UP)) 478 hinic_hwdev_ifdown(nic_dev->hwdev); 479 return err; 480 } 481 482 static int hinic_close(struct net_device *netdev) 483 { 484 struct hinic_dev *nic_dev = netdev_priv(netdev); 485 unsigned int flags; 486 int err; 487 488 down(&nic_dev->mgmt_lock); 489 490 flags = nic_dev->flags; 491 nic_dev->flags &= ~HINIC_INTF_UP; 492 493 netif_carrier_off(netdev); 494 netif_tx_disable(netdev); 495 496 update_nic_stats(nic_dev); 497 498 up(&nic_dev->mgmt_lock); 499 500 err = hinic_port_set_func_state(nic_dev, HINIC_FUNC_PORT_DISABLE); 501 if (err) { 502 netif_err(nic_dev, drv, netdev, 503 "Failed to set func port state\n"); 504 nic_dev->flags |= (flags & HINIC_INTF_UP); 505 return err; 506 } 507 508 err = hinic_port_set_state(nic_dev, HINIC_PORT_DISABLE); 509 if (err) { 510 netif_err(nic_dev, drv, netdev, "Failed to set port state\n"); 511 nic_dev->flags |= (flags & HINIC_INTF_UP); 512 return err; 513 } 514 515 if (nic_dev->flags & HINIC_RSS_ENABLE) { 516 hinic_rss_deinit(nic_dev); 517 hinic_rss_template_free(nic_dev, nic_dev->rss_tmpl_idx); 518 } 519 520 free_rxqs(nic_dev); 521 free_txqs(nic_dev); 522 523 if (flags & HINIC_INTF_UP) 524 hinic_hwdev_ifdown(nic_dev->hwdev); 525 526 netif_info(nic_dev, drv, netdev, "HINIC_INTF is DOWN\n"); 527 return 0; 528 } 529 530 static int hinic_change_mtu(struct net_device *netdev, int new_mtu) 531 { 532 struct hinic_dev *nic_dev = netdev_priv(netdev); 533 int err; 534 535 netif_info(nic_dev, drv, netdev, "set_mtu = %d\n", new_mtu); 536 537 err = hinic_port_set_mtu(nic_dev, new_mtu); 538 if (err) 539 netif_err(nic_dev, drv, netdev, "Failed to set port mtu\n"); 540 else 541 netdev->mtu = new_mtu; 542 543 return err; 544 } 545 546 /** 547 * change_mac_addr - change the main mac address of network device 548 * @netdev: network device 549 * @addr: mac address to set 550 * 551 * Return 0 - Success, negative - Failure 552 **/ 553 static int change_mac_addr(struct net_device *netdev, const u8 *addr) 554 { 555 struct hinic_dev *nic_dev = netdev_priv(netdev); 556 u16 vid = 0; 557 int err; 558 559 if (!is_valid_ether_addr(addr)) 560 return -EADDRNOTAVAIL; 561 562 netif_info(nic_dev, drv, netdev, "change mac addr = %02x %02x %02x %02x %02x %02x\n", 563 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 564 565 down(&nic_dev->mgmt_lock); 566 567 do { 568 err = hinic_port_del_mac(nic_dev, netdev->dev_addr, vid); 569 if (err) { 570 netif_err(nic_dev, drv, netdev, 571 "Failed to delete mac\n"); 572 break; 573 } 574 575 err = hinic_port_add_mac(nic_dev, addr, vid); 576 if (err) { 577 netif_err(nic_dev, drv, netdev, "Failed to add mac\n"); 578 break; 579 } 580 581 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1); 582 } while (vid != VLAN_N_VID); 583 584 up(&nic_dev->mgmt_lock); 585 return err; 586 } 587 588 static int hinic_set_mac_addr(struct net_device *netdev, void *addr) 589 { 590 unsigned char new_mac[ETH_ALEN]; 591 struct sockaddr *saddr = addr; 592 int err; 593 594 memcpy(new_mac, saddr->sa_data, ETH_ALEN); 595 596 err = change_mac_addr(netdev, new_mac); 597 if (!err) 598 memcpy(netdev->dev_addr, new_mac, ETH_ALEN); 599 600 return err; 601 } 602 603 /** 604 * add_mac_addr - add mac address to network device 605 * @netdev: network device 606 * @addr: mac address to add 607 * 608 * Return 0 - Success, negative - Failure 609 **/ 610 static int add_mac_addr(struct net_device *netdev, const u8 *addr) 611 { 612 struct hinic_dev *nic_dev = netdev_priv(netdev); 613 u16 vid = 0; 614 int err; 615 616 netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n", 617 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 618 619 down(&nic_dev->mgmt_lock); 620 621 do { 622 err = hinic_port_add_mac(nic_dev, addr, vid); 623 if (err) { 624 netif_err(nic_dev, drv, netdev, "Failed to add mac\n"); 625 break; 626 } 627 628 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1); 629 } while (vid != VLAN_N_VID); 630 631 up(&nic_dev->mgmt_lock); 632 return err; 633 } 634 635 /** 636 * remove_mac_addr - remove mac address from network device 637 * @netdev: network device 638 * @addr: mac address to remove 639 * 640 * Return 0 - Success, negative - Failure 641 **/ 642 static int remove_mac_addr(struct net_device *netdev, const u8 *addr) 643 { 644 struct hinic_dev *nic_dev = netdev_priv(netdev); 645 u16 vid = 0; 646 int err; 647 648 if (!is_valid_ether_addr(addr)) 649 return -EADDRNOTAVAIL; 650 651 netif_info(nic_dev, drv, netdev, "remove mac addr = %02x %02x %02x %02x %02x %02x\n", 652 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 653 654 down(&nic_dev->mgmt_lock); 655 656 do { 657 err = hinic_port_del_mac(nic_dev, addr, vid); 658 if (err) { 659 netif_err(nic_dev, drv, netdev, 660 "Failed to delete mac\n"); 661 break; 662 } 663 664 vid = find_next_bit(nic_dev->vlan_bitmap, VLAN_N_VID, vid + 1); 665 } while (vid != VLAN_N_VID); 666 667 up(&nic_dev->mgmt_lock); 668 return err; 669 } 670 671 static int hinic_vlan_rx_add_vid(struct net_device *netdev, 672 __always_unused __be16 proto, u16 vid) 673 { 674 struct hinic_dev *nic_dev = netdev_priv(netdev); 675 int ret, err; 676 677 netif_info(nic_dev, drv, netdev, "add vid = %d\n", vid); 678 679 down(&nic_dev->mgmt_lock); 680 681 err = hinic_port_add_vlan(nic_dev, vid); 682 if (err) { 683 netif_err(nic_dev, drv, netdev, "Failed to add vlan\n"); 684 goto err_vlan_add; 685 } 686 687 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, vid); 688 if (err) { 689 netif_err(nic_dev, drv, netdev, "Failed to set mac\n"); 690 goto err_add_mac; 691 } 692 693 bitmap_set(nic_dev->vlan_bitmap, vid, 1); 694 695 up(&nic_dev->mgmt_lock); 696 return 0; 697 698 err_add_mac: 699 ret = hinic_port_del_vlan(nic_dev, vid); 700 if (ret) 701 netif_err(nic_dev, drv, netdev, 702 "Failed to revert by removing vlan\n"); 703 704 err_vlan_add: 705 up(&nic_dev->mgmt_lock); 706 return err; 707 } 708 709 static int hinic_vlan_rx_kill_vid(struct net_device *netdev, 710 __always_unused __be16 proto, u16 vid) 711 { 712 struct hinic_dev *nic_dev = netdev_priv(netdev); 713 int err; 714 715 netif_info(nic_dev, drv, netdev, "remove vid = %d\n", vid); 716 717 down(&nic_dev->mgmt_lock); 718 719 err = hinic_port_del_vlan(nic_dev, vid); 720 if (err) { 721 netif_err(nic_dev, drv, netdev, "Failed to delete vlan\n"); 722 goto err_del_vlan; 723 } 724 725 bitmap_clear(nic_dev->vlan_bitmap, vid, 1); 726 727 up(&nic_dev->mgmt_lock); 728 return 0; 729 730 err_del_vlan: 731 up(&nic_dev->mgmt_lock); 732 return err; 733 } 734 735 static void set_rx_mode(struct work_struct *work) 736 { 737 struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work); 738 struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work); 739 740 netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n"); 741 742 hinic_port_set_rx_mode(nic_dev, rx_mode_work->rx_mode); 743 744 __dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr); 745 __dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr); 746 } 747 748 static void hinic_set_rx_mode(struct net_device *netdev) 749 { 750 struct hinic_dev *nic_dev = netdev_priv(netdev); 751 struct hinic_rx_mode_work *rx_mode_work; 752 u32 rx_mode; 753 754 rx_mode_work = &nic_dev->rx_mode_work; 755 756 rx_mode = HINIC_RX_MODE_UC | 757 HINIC_RX_MODE_MC | 758 HINIC_RX_MODE_BC; 759 760 if (netdev->flags & IFF_PROMISC) 761 rx_mode |= HINIC_RX_MODE_PROMISC; 762 else if (netdev->flags & IFF_ALLMULTI) 763 rx_mode |= HINIC_RX_MODE_MC_ALL; 764 765 rx_mode_work->rx_mode = rx_mode; 766 767 queue_work(nic_dev->workq, &rx_mode_work->work); 768 } 769 770 static void hinic_tx_timeout(struct net_device *netdev, unsigned int txqueue) 771 { 772 struct hinic_dev *nic_dev = netdev_priv(netdev); 773 774 netif_err(nic_dev, drv, netdev, "Tx timeout\n"); 775 } 776 777 static void hinic_get_stats64(struct net_device *netdev, 778 struct rtnl_link_stats64 *stats) 779 { 780 struct hinic_dev *nic_dev = netdev_priv(netdev); 781 struct hinic_rxq_stats *nic_rx_stats; 782 struct hinic_txq_stats *nic_tx_stats; 783 784 nic_rx_stats = &nic_dev->rx_stats; 785 nic_tx_stats = &nic_dev->tx_stats; 786 787 down(&nic_dev->mgmt_lock); 788 789 if (nic_dev->flags & HINIC_INTF_UP) 790 update_nic_stats(nic_dev); 791 792 up(&nic_dev->mgmt_lock); 793 794 stats->rx_bytes = nic_rx_stats->bytes; 795 stats->rx_packets = nic_rx_stats->pkts; 796 stats->rx_errors = nic_rx_stats->errors; 797 798 stats->tx_bytes = nic_tx_stats->bytes; 799 stats->tx_packets = nic_tx_stats->pkts; 800 stats->tx_errors = nic_tx_stats->tx_dropped; 801 } 802 803 static int hinic_set_features(struct net_device *netdev, 804 netdev_features_t features) 805 { 806 struct hinic_dev *nic_dev = netdev_priv(netdev); 807 808 return set_features(nic_dev, nic_dev->netdev->features, 809 features, false); 810 } 811 812 static netdev_features_t hinic_fix_features(struct net_device *netdev, 813 netdev_features_t features) 814 { 815 struct hinic_dev *nic_dev = netdev_priv(netdev); 816 817 /* If Rx checksum is disabled, then LRO should also be disabled */ 818 if (!(features & NETIF_F_RXCSUM)) { 819 netif_info(nic_dev, drv, netdev, "disabling LRO as RXCSUM is off\n"); 820 features &= ~NETIF_F_LRO; 821 } 822 823 return features; 824 } 825 826 static const struct net_device_ops hinic_netdev_ops = { 827 .ndo_open = hinic_open, 828 .ndo_stop = hinic_close, 829 .ndo_change_mtu = hinic_change_mtu, 830 .ndo_set_mac_address = hinic_set_mac_addr, 831 .ndo_validate_addr = eth_validate_addr, 832 .ndo_vlan_rx_add_vid = hinic_vlan_rx_add_vid, 833 .ndo_vlan_rx_kill_vid = hinic_vlan_rx_kill_vid, 834 .ndo_set_rx_mode = hinic_set_rx_mode, 835 .ndo_start_xmit = hinic_xmit_frame, 836 .ndo_tx_timeout = hinic_tx_timeout, 837 .ndo_get_stats64 = hinic_get_stats64, 838 .ndo_fix_features = hinic_fix_features, 839 .ndo_set_features = hinic_set_features, 840 }; 841 842 static void netdev_features_init(struct net_device *netdev) 843 { 844 netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | 845 NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 | 846 NETIF_F_RXCSUM | NETIF_F_LRO | 847 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; 848 849 netdev->vlan_features = netdev->hw_features; 850 851 netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER; 852 } 853 854 /** 855 * link_status_event_handler - link event handler 856 * @handle: nic device for the handler 857 * @buf_in: input buffer 858 * @in_size: input size 859 * @buf_in: output buffer 860 * @out_size: returned output size 861 * 862 * Return 0 - Success, negative - Failure 863 **/ 864 static void link_status_event_handler(void *handle, void *buf_in, u16 in_size, 865 void *buf_out, u16 *out_size) 866 { 867 struct hinic_port_link_status *link_status, *ret_link_status; 868 struct hinic_dev *nic_dev = handle; 869 870 link_status = buf_in; 871 872 if (link_status->link == HINIC_LINK_STATE_UP) { 873 down(&nic_dev->mgmt_lock); 874 875 nic_dev->flags |= HINIC_LINK_UP; 876 877 if ((nic_dev->flags & (HINIC_LINK_UP | HINIC_INTF_UP)) == 878 (HINIC_LINK_UP | HINIC_INTF_UP)) { 879 netif_carrier_on(nic_dev->netdev); 880 netif_tx_wake_all_queues(nic_dev->netdev); 881 } 882 883 up(&nic_dev->mgmt_lock); 884 885 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is UP\n"); 886 } else { 887 down(&nic_dev->mgmt_lock); 888 889 nic_dev->flags &= ~HINIC_LINK_UP; 890 891 netif_carrier_off(nic_dev->netdev); 892 netif_tx_disable(nic_dev->netdev); 893 894 up(&nic_dev->mgmt_lock); 895 896 netif_info(nic_dev, drv, nic_dev->netdev, "HINIC_Link is DOWN\n"); 897 } 898 899 ret_link_status = buf_out; 900 ret_link_status->status = 0; 901 902 *out_size = sizeof(*ret_link_status); 903 } 904 905 static int set_features(struct hinic_dev *nic_dev, 906 netdev_features_t pre_features, 907 netdev_features_t features, bool force_change) 908 { 909 netdev_features_t changed = force_change ? ~0 : pre_features ^ features; 910 u32 csum_en = HINIC_RX_CSUM_OFFLOAD_EN; 911 int err = 0; 912 913 if (changed & NETIF_F_TSO) 914 err = hinic_port_set_tso(nic_dev, (features & NETIF_F_TSO) ? 915 HINIC_TSO_ENABLE : HINIC_TSO_DISABLE); 916 917 if (changed & NETIF_F_RXCSUM) 918 err = hinic_set_rx_csum_offload(nic_dev, csum_en); 919 920 if (changed & NETIF_F_LRO) { 921 err = hinic_set_rx_lro_state(nic_dev, 922 !!(features & NETIF_F_LRO), 923 HINIC_LRO_RX_TIMER_DEFAULT, 924 HINIC_LRO_MAX_WQE_NUM_DEFAULT); 925 } 926 927 if (changed & NETIF_F_HW_VLAN_CTAG_RX) 928 err = hinic_set_rx_vlan_offload(nic_dev, 929 !!(features & 930 NETIF_F_HW_VLAN_CTAG_RX)); 931 932 return err; 933 } 934 935 /** 936 * nic_dev_init - Initialize the NIC device 937 * @pdev: the NIC pci device 938 * 939 * Return 0 - Success, negative - Failure 940 **/ 941 static int nic_dev_init(struct pci_dev *pdev) 942 { 943 struct hinic_rx_mode_work *rx_mode_work; 944 struct hinic_txq_stats *tx_stats; 945 struct hinic_rxq_stats *rx_stats; 946 struct hinic_dev *nic_dev; 947 struct net_device *netdev; 948 struct hinic_hwdev *hwdev; 949 int err, num_qps; 950 951 hwdev = hinic_init_hwdev(pdev); 952 if (IS_ERR(hwdev)) { 953 dev_err(&pdev->dev, "Failed to initialize HW device\n"); 954 return PTR_ERR(hwdev); 955 } 956 957 num_qps = hinic_hwdev_num_qps(hwdev); 958 if (num_qps <= 0) { 959 dev_err(&pdev->dev, "Invalid number of QPS\n"); 960 err = -EINVAL; 961 goto err_num_qps; 962 } 963 964 netdev = alloc_etherdev_mq(sizeof(*nic_dev), num_qps); 965 if (!netdev) { 966 dev_err(&pdev->dev, "Failed to allocate Ethernet device\n"); 967 err = -ENOMEM; 968 goto err_alloc_etherdev; 969 } 970 971 hinic_set_ethtool_ops(netdev); 972 netdev->netdev_ops = &hinic_netdev_ops; 973 netdev->max_mtu = ETH_MAX_MTU; 974 975 nic_dev = netdev_priv(netdev); 976 nic_dev->netdev = netdev; 977 nic_dev->hwdev = hwdev; 978 nic_dev->msg_enable = MSG_ENABLE_DEFAULT; 979 nic_dev->flags = 0; 980 nic_dev->txqs = NULL; 981 nic_dev->rxqs = NULL; 982 nic_dev->tx_weight = tx_weight; 983 nic_dev->rx_weight = rx_weight; 984 985 sema_init(&nic_dev->mgmt_lock, 1); 986 987 tx_stats = &nic_dev->tx_stats; 988 rx_stats = &nic_dev->rx_stats; 989 990 u64_stats_init(&tx_stats->syncp); 991 u64_stats_init(&rx_stats->syncp); 992 993 nic_dev->vlan_bitmap = devm_kzalloc(&pdev->dev, 994 VLAN_BITMAP_SIZE(nic_dev), 995 GFP_KERNEL); 996 if (!nic_dev->vlan_bitmap) { 997 err = -ENOMEM; 998 goto err_vlan_bitmap; 999 } 1000 1001 nic_dev->workq = create_singlethread_workqueue(HINIC_WQ_NAME); 1002 if (!nic_dev->workq) { 1003 err = -ENOMEM; 1004 goto err_workq; 1005 } 1006 1007 pci_set_drvdata(pdev, netdev); 1008 1009 err = hinic_port_get_mac(nic_dev, netdev->dev_addr); 1010 if (err) 1011 dev_warn(&pdev->dev, "Failed to get mac address\n"); 1012 1013 err = hinic_port_add_mac(nic_dev, netdev->dev_addr, 0); 1014 if (err) { 1015 dev_err(&pdev->dev, "Failed to add mac\n"); 1016 goto err_add_mac; 1017 } 1018 1019 err = hinic_port_set_mtu(nic_dev, netdev->mtu); 1020 if (err) { 1021 dev_err(&pdev->dev, "Failed to set mtu\n"); 1022 goto err_set_mtu; 1023 } 1024 1025 rx_mode_work = &nic_dev->rx_mode_work; 1026 INIT_WORK(&rx_mode_work->work, set_rx_mode); 1027 1028 netdev_features_init(netdev); 1029 1030 netif_carrier_off(netdev); 1031 1032 hinic_hwdev_cb_register(nic_dev->hwdev, HINIC_MGMT_MSG_CMD_LINK_STATUS, 1033 nic_dev, link_status_event_handler); 1034 1035 err = set_features(nic_dev, 0, nic_dev->netdev->features, true); 1036 if (err) 1037 goto err_set_features; 1038 1039 SET_NETDEV_DEV(netdev, &pdev->dev); 1040 1041 err = register_netdev(netdev); 1042 if (err) { 1043 dev_err(&pdev->dev, "Failed to register netdev\n"); 1044 goto err_reg_netdev; 1045 } 1046 1047 return 0; 1048 1049 err_reg_netdev: 1050 err_set_features: 1051 hinic_hwdev_cb_unregister(nic_dev->hwdev, 1052 HINIC_MGMT_MSG_CMD_LINK_STATUS); 1053 cancel_work_sync(&rx_mode_work->work); 1054 1055 err_set_mtu: 1056 err_add_mac: 1057 pci_set_drvdata(pdev, NULL); 1058 destroy_workqueue(nic_dev->workq); 1059 1060 err_workq: 1061 err_vlan_bitmap: 1062 free_netdev(netdev); 1063 1064 err_alloc_etherdev: 1065 err_num_qps: 1066 hinic_free_hwdev(hwdev); 1067 return err; 1068 } 1069 1070 static int hinic_probe(struct pci_dev *pdev, 1071 const struct pci_device_id *id) 1072 { 1073 int err = pci_enable_device(pdev); 1074 1075 if (err) { 1076 dev_err(&pdev->dev, "Failed to enable PCI device\n"); 1077 return err; 1078 } 1079 1080 err = pci_request_regions(pdev, HINIC_DRV_NAME); 1081 if (err) { 1082 dev_err(&pdev->dev, "Failed to request PCI regions\n"); 1083 goto err_pci_regions; 1084 } 1085 1086 pci_set_master(pdev); 1087 1088 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 1089 if (err) { 1090 dev_warn(&pdev->dev, "Couldn't set 64-bit DMA mask\n"); 1091 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 1092 if (err) { 1093 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 1094 goto err_dma_mask; 1095 } 1096 } 1097 1098 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); 1099 if (err) { 1100 dev_warn(&pdev->dev, 1101 "Couldn't set 64-bit consistent DMA mask\n"); 1102 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 1103 if (err) { 1104 dev_err(&pdev->dev, 1105 "Failed to set consistent DMA mask\n"); 1106 goto err_dma_consistent_mask; 1107 } 1108 } 1109 1110 err = nic_dev_init(pdev); 1111 if (err) { 1112 dev_err(&pdev->dev, "Failed to initialize NIC device\n"); 1113 goto err_nic_dev_init; 1114 } 1115 1116 dev_info(&pdev->dev, "HiNIC driver - probed\n"); 1117 return 0; 1118 1119 err_nic_dev_init: 1120 err_dma_consistent_mask: 1121 err_dma_mask: 1122 pci_release_regions(pdev); 1123 1124 err_pci_regions: 1125 pci_disable_device(pdev); 1126 return err; 1127 } 1128 1129 static void hinic_remove(struct pci_dev *pdev) 1130 { 1131 struct net_device *netdev = pci_get_drvdata(pdev); 1132 struct hinic_dev *nic_dev = netdev_priv(netdev); 1133 struct hinic_rx_mode_work *rx_mode_work; 1134 1135 unregister_netdev(netdev); 1136 1137 hinic_hwdev_cb_unregister(nic_dev->hwdev, 1138 HINIC_MGMT_MSG_CMD_LINK_STATUS); 1139 1140 rx_mode_work = &nic_dev->rx_mode_work; 1141 cancel_work_sync(&rx_mode_work->work); 1142 1143 pci_set_drvdata(pdev, NULL); 1144 1145 destroy_workqueue(nic_dev->workq); 1146 1147 hinic_free_hwdev(nic_dev->hwdev); 1148 1149 free_netdev(netdev); 1150 1151 pci_release_regions(pdev); 1152 pci_disable_device(pdev); 1153 1154 dev_info(&pdev->dev, "HiNIC driver - removed\n"); 1155 } 1156 1157 static void hinic_shutdown(struct pci_dev *pdev) 1158 { 1159 pci_disable_device(pdev); 1160 } 1161 1162 static const struct pci_device_id hinic_pci_table[] = { 1163 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE), 0}, 1164 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE), 0}, 1165 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_DUAL_PORT_100GE_MEZZ), 0}, 1166 { PCI_VDEVICE(HUAWEI, HINIC_DEV_ID_QUAD_PORT_25GE_MEZZ), 0}, 1167 { 0, 0} 1168 }; 1169 MODULE_DEVICE_TABLE(pci, hinic_pci_table); 1170 1171 static struct pci_driver hinic_driver = { 1172 .name = HINIC_DRV_NAME, 1173 .id_table = hinic_pci_table, 1174 .probe = hinic_probe, 1175 .remove = hinic_remove, 1176 .shutdown = hinic_shutdown, 1177 }; 1178 1179 module_pci_driver(hinic_driver); 1180