1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. */ 3 4 #include <linux/types.h> 5 #include <linux/module.h> 6 #include <linux/pci.h> 7 #include <linux/netdevice.h> 8 #include <linux/string.h> 9 #include <linux/etherdevice.h> 10 #include <linux/phylink.h> 11 #include <net/ip.h> 12 #include <linux/if_vlan.h> 13 14 #include "../libwx/wx_type.h" 15 #include "../libwx/wx_lib.h" 16 #include "../libwx/wx_hw.h" 17 #include "txgbe_type.h" 18 #include "txgbe_hw.h" 19 #include "txgbe_phy.h" 20 #include "txgbe_irq.h" 21 #include "txgbe_fdir.h" 22 #include "txgbe_ethtool.h" 23 24 char txgbe_driver_name[] = "txgbe"; 25 26 /* txgbe_pci_tbl - PCI Device ID Table 27 * 28 * Wildcard entries (PCI_ANY_ID) should come last 29 * Last entry must be all 0s 30 * 31 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 32 * Class, Class Mask, private data (not used) } 33 */ 34 static const struct pci_device_id txgbe_pci_tbl[] = { 35 { PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_SP1000), 0}, 36 { PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_WX1820), 0}, 37 /* required last entry */ 38 { .device = 0 } 39 }; 40 41 #define DEFAULT_DEBUG_LEVEL_SHIFT 3 42 43 static void txgbe_check_minimum_link(struct wx *wx) 44 { 45 struct pci_dev *pdev; 46 47 pdev = wx->pdev; 48 pcie_print_link_status(pdev); 49 } 50 51 /** 52 * txgbe_enumerate_functions - Get the number of ports this device has 53 * @wx: wx structure 54 * 55 * This function enumerates the phsyical functions co-located on a single slot, 56 * in order to determine how many ports a device has. This is most useful in 57 * determining the required GT/s of PCIe bandwidth necessary for optimal 58 * performance. 59 **/ 60 static int txgbe_enumerate_functions(struct wx *wx) 61 { 62 struct pci_dev *entry, *pdev = wx->pdev; 63 int physfns = 0; 64 65 list_for_each_entry(entry, &pdev->bus->devices, bus_list) { 66 /* When the devices on the bus don't all match our device ID, 67 * we can't reliably determine the correct number of 68 * functions. This can occur if a function has been direct 69 * attached to a virtual machine using VT-d. 70 */ 71 if (entry->vendor != pdev->vendor || 72 entry->device != pdev->device) 73 return -EINVAL; 74 75 physfns++; 76 } 77 78 return physfns; 79 } 80 81 static void txgbe_up_complete(struct wx *wx) 82 { 83 struct net_device *netdev = wx->netdev; 84 85 txgbe_reinit_gpio_intr(wx); 86 wx_control_hw(wx, true); 87 wx_configure_vectors(wx); 88 89 /* make sure to complete pre-operations */ 90 smp_mb__before_atomic(); 91 wx_napi_enable_all(wx); 92 93 phylink_start(wx->phylink); 94 95 /* clear any pending interrupts, may auto mask */ 96 rd32(wx, WX_PX_IC(0)); 97 rd32(wx, WX_PX_IC(1)); 98 rd32(wx, WX_PX_MISC_IC); 99 txgbe_irq_enable(wx, true); 100 101 /* enable transmits */ 102 netif_tx_start_all_queues(netdev); 103 } 104 105 static void txgbe_reset(struct wx *wx) 106 { 107 struct net_device *netdev = wx->netdev; 108 u8 old_addr[ETH_ALEN]; 109 int err; 110 111 err = txgbe_reset_hw(wx); 112 if (err != 0) 113 wx_err(wx, "Hardware Error: %d\n", err); 114 115 wx_start_hw(wx); 116 /* do not flush user set addresses */ 117 memcpy(old_addr, &wx->mac_table[0].addr, netdev->addr_len); 118 wx_flush_sw_mac_table(wx); 119 wx_mac_set_default_filter(wx, old_addr); 120 } 121 122 static void txgbe_disable_device(struct wx *wx) 123 { 124 struct net_device *netdev = wx->netdev; 125 u32 i; 126 127 wx_disable_pcie_master(wx); 128 /* disable receives */ 129 wx_disable_rx(wx); 130 131 /* disable all enabled rx queues */ 132 for (i = 0; i < wx->num_rx_queues; i++) 133 /* this call also flushes the previous write */ 134 wx_disable_rx_queue(wx, wx->rx_ring[i]); 135 136 netif_tx_stop_all_queues(netdev); 137 netif_tx_disable(netdev); 138 139 wx_irq_disable(wx); 140 wx_napi_disable_all(wx); 141 142 if (wx->bus.func < 2) 143 wr32m(wx, TXGBE_MIS_PRB_CTL, TXGBE_MIS_PRB_CTL_LAN_UP(wx->bus.func), 0); 144 else 145 wx_err(wx, "%s: invalid bus lan id %d\n", 146 __func__, wx->bus.func); 147 148 if (!(((wx->subsystem_device_id & WX_NCSI_MASK) == WX_NCSI_SUP) || 149 ((wx->subsystem_device_id & WX_WOL_MASK) == WX_WOL_SUP))) { 150 /* disable mac transmiter */ 151 wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0); 152 } 153 154 /* disable transmits in the hardware now that interrupts are off */ 155 for (i = 0; i < wx->num_tx_queues; i++) { 156 u8 reg_idx = wx->tx_ring[i]->reg_idx; 157 158 wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH); 159 } 160 161 /* Disable the Tx DMA engine */ 162 wr32m(wx, WX_TDM_CTL, WX_TDM_CTL_TE, 0); 163 164 wx_update_stats(wx); 165 } 166 167 void txgbe_down(struct wx *wx) 168 { 169 txgbe_disable_device(wx); 170 txgbe_reset(wx); 171 phylink_stop(wx->phylink); 172 173 wx_clean_all_tx_rings(wx); 174 wx_clean_all_rx_rings(wx); 175 } 176 177 void txgbe_up(struct wx *wx) 178 { 179 wx_configure(wx); 180 txgbe_up_complete(wx); 181 } 182 183 /** 184 * txgbe_init_type_code - Initialize the shared code 185 * @wx: pointer to hardware structure 186 **/ 187 static void txgbe_init_type_code(struct wx *wx) 188 { 189 u8 device_type = wx->subsystem_device_id & 0xF0; 190 191 switch (wx->device_id) { 192 case TXGBE_DEV_ID_SP1000: 193 case TXGBE_DEV_ID_WX1820: 194 wx->mac.type = wx_mac_sp; 195 break; 196 default: 197 wx->mac.type = wx_mac_unknown; 198 break; 199 } 200 201 switch (device_type) { 202 case TXGBE_ID_SFP: 203 wx->media_type = sp_media_fiber; 204 break; 205 case TXGBE_ID_XAUI: 206 case TXGBE_ID_SGMII: 207 wx->media_type = sp_media_copper; 208 break; 209 case TXGBE_ID_KR_KX_KX4: 210 case TXGBE_ID_MAC_XAUI: 211 case TXGBE_ID_MAC_SGMII: 212 wx->media_type = sp_media_backplane; 213 break; 214 case TXGBE_ID_SFI_XAUI: 215 if (wx->bus.func == 0) 216 wx->media_type = sp_media_fiber; 217 else 218 wx->media_type = sp_media_copper; 219 break; 220 default: 221 wx->media_type = sp_media_unknown; 222 break; 223 } 224 } 225 226 /** 227 * txgbe_sw_init - Initialize general software structures (struct wx) 228 * @wx: board private structure to initialize 229 **/ 230 static int txgbe_sw_init(struct wx *wx) 231 { 232 u16 msix_count = 0; 233 int err; 234 235 wx->mac.num_rar_entries = TXGBE_SP_RAR_ENTRIES; 236 wx->mac.max_tx_queues = TXGBE_SP_MAX_TX_QUEUES; 237 wx->mac.max_rx_queues = TXGBE_SP_MAX_RX_QUEUES; 238 wx->mac.mcft_size = TXGBE_SP_MC_TBL_SIZE; 239 wx->mac.vft_size = TXGBE_SP_VFT_TBL_SIZE; 240 wx->mac.rx_pb_size = TXGBE_SP_RX_PB_SIZE; 241 wx->mac.tx_pb_size = TXGBE_SP_TDB_PB_SZ; 242 243 /* PCI config space info */ 244 err = wx_sw_init(wx); 245 if (err < 0) 246 return err; 247 248 txgbe_init_type_code(wx); 249 250 /* Set common capability flags and settings */ 251 wx->max_q_vectors = TXGBE_MAX_MSIX_VECTORS; 252 err = wx_get_pcie_msix_counts(wx, &msix_count, TXGBE_MAX_MSIX_VECTORS); 253 if (err) 254 wx_err(wx, "Do not support MSI-X\n"); 255 wx->mac.max_msix_vectors = msix_count; 256 257 wx->ring_feature[RING_F_RSS].limit = min_t(int, TXGBE_MAX_RSS_INDICES, 258 num_online_cpus()); 259 wx->rss_enabled = true; 260 261 wx->ring_feature[RING_F_FDIR].limit = min_t(int, TXGBE_MAX_FDIR_INDICES, 262 num_online_cpus()); 263 set_bit(WX_FLAG_FDIR_CAPABLE, wx->flags); 264 set_bit(WX_FLAG_FDIR_HASH, wx->flags); 265 wx->atr_sample_rate = TXGBE_DEFAULT_ATR_SAMPLE_RATE; 266 wx->atr = txgbe_atr; 267 wx->configure_fdir = txgbe_configure_fdir; 268 269 /* enable itr by default in dynamic mode */ 270 wx->rx_itr_setting = 1; 271 wx->tx_itr_setting = 1; 272 273 /* set default ring sizes */ 274 wx->tx_ring_count = TXGBE_DEFAULT_TXD; 275 wx->rx_ring_count = TXGBE_DEFAULT_RXD; 276 277 /* set default work limits */ 278 wx->tx_work_limit = TXGBE_DEFAULT_TX_WORK; 279 wx->rx_work_limit = TXGBE_DEFAULT_RX_WORK; 280 281 wx->do_reset = txgbe_do_reset; 282 283 return 0; 284 } 285 286 static void txgbe_init_fdir(struct txgbe *txgbe) 287 { 288 txgbe->fdir_filter_count = 0; 289 spin_lock_init(&txgbe->fdir_perfect_lock); 290 } 291 292 /** 293 * txgbe_open - Called when a network interface is made active 294 * @netdev: network interface device structure 295 * 296 * Returns 0 on success, negative value on failure 297 * 298 * The open entry point is called when a network interface is made 299 * active by the system (IFF_UP). 300 **/ 301 static int txgbe_open(struct net_device *netdev) 302 { 303 struct wx *wx = netdev_priv(netdev); 304 int err; 305 306 err = wx_setup_resources(wx); 307 if (err) 308 goto err_reset; 309 310 wx_configure(wx); 311 312 err = txgbe_request_queue_irqs(wx); 313 if (err) 314 goto err_free_resources; 315 316 /* Notify the stack of the actual queue counts. */ 317 err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues); 318 if (err) 319 goto err_free_irq; 320 321 err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues); 322 if (err) 323 goto err_free_irq; 324 325 txgbe_up_complete(wx); 326 327 return 0; 328 329 err_free_irq: 330 wx_free_irq(wx); 331 err_free_resources: 332 wx_free_resources(wx); 333 err_reset: 334 txgbe_reset(wx); 335 336 return err; 337 } 338 339 /** 340 * txgbe_close_suspend - actions necessary to both suspend and close flows 341 * @wx: the private wx struct 342 * 343 * This function should contain the necessary work common to both suspending 344 * and closing of the device. 345 */ 346 static void txgbe_close_suspend(struct wx *wx) 347 { 348 txgbe_disable_device(wx); 349 wx_free_resources(wx); 350 } 351 352 /** 353 * txgbe_close - Disables a network interface 354 * @netdev: network interface device structure 355 * 356 * Returns 0, this is not allowed to fail 357 * 358 * The close entry point is called when an interface is de-activated 359 * by the OS. The hardware is still under the drivers control, but 360 * needs to be disabled. A global MAC reset is issued to stop the 361 * hardware, and all transmit and receive resources are freed. 362 **/ 363 static int txgbe_close(struct net_device *netdev) 364 { 365 struct wx *wx = netdev_priv(netdev); 366 367 txgbe_down(wx); 368 wx_free_irq(wx); 369 wx_free_resources(wx); 370 txgbe_fdir_filter_exit(wx); 371 wx_control_hw(wx, false); 372 373 return 0; 374 } 375 376 static void txgbe_dev_shutdown(struct pci_dev *pdev) 377 { 378 struct wx *wx = pci_get_drvdata(pdev); 379 struct net_device *netdev; 380 381 netdev = wx->netdev; 382 netif_device_detach(netdev); 383 384 rtnl_lock(); 385 if (netif_running(netdev)) 386 txgbe_close_suspend(wx); 387 rtnl_unlock(); 388 389 wx_control_hw(wx, false); 390 391 pci_disable_device(pdev); 392 } 393 394 static void txgbe_shutdown(struct pci_dev *pdev) 395 { 396 txgbe_dev_shutdown(pdev); 397 398 if (system_state == SYSTEM_POWER_OFF) { 399 pci_wake_from_d3(pdev, false); 400 pci_set_power_state(pdev, PCI_D3hot); 401 } 402 } 403 404 /** 405 * txgbe_setup_tc - routine to configure net_device for multiple traffic 406 * classes. 407 * 408 * @dev: net device to configure 409 * @tc: number of traffic classes to enable 410 */ 411 int txgbe_setup_tc(struct net_device *dev, u8 tc) 412 { 413 struct wx *wx = netdev_priv(dev); 414 struct txgbe *txgbe = wx->priv; 415 416 /* Hardware has to reinitialize queues and interrupts to 417 * match packet buffer alignment. Unfortunately, the 418 * hardware is not flexible enough to do this dynamically. 419 */ 420 if (netif_running(dev)) 421 txgbe_close(dev); 422 else 423 txgbe_reset(wx); 424 425 txgbe_free_misc_irq(txgbe); 426 wx_clear_interrupt_scheme(wx); 427 428 if (tc) 429 netdev_set_num_tc(dev, tc); 430 else 431 netdev_reset_tc(dev); 432 433 wx_init_interrupt_scheme(wx); 434 txgbe_setup_misc_irq(txgbe); 435 436 if (netif_running(dev)) 437 txgbe_open(dev); 438 439 return 0; 440 } 441 442 static void txgbe_reinit_locked(struct wx *wx) 443 { 444 int err = 0; 445 446 netif_trans_update(wx->netdev); 447 448 err = wx_set_state_reset(wx); 449 if (err) { 450 wx_err(wx, "wait device reset timeout\n"); 451 return; 452 } 453 454 txgbe_down(wx); 455 txgbe_up(wx); 456 457 clear_bit(WX_STATE_RESETTING, wx->state); 458 } 459 460 void txgbe_do_reset(struct net_device *netdev) 461 { 462 struct wx *wx = netdev_priv(netdev); 463 464 if (netif_running(netdev)) 465 txgbe_reinit_locked(wx); 466 else 467 txgbe_reset(wx); 468 } 469 470 static const struct net_device_ops txgbe_netdev_ops = { 471 .ndo_open = txgbe_open, 472 .ndo_stop = txgbe_close, 473 .ndo_change_mtu = wx_change_mtu, 474 .ndo_start_xmit = wx_xmit_frame, 475 .ndo_set_rx_mode = wx_set_rx_mode, 476 .ndo_set_features = wx_set_features, 477 .ndo_fix_features = wx_fix_features, 478 .ndo_validate_addr = eth_validate_addr, 479 .ndo_set_mac_address = wx_set_mac, 480 .ndo_get_stats64 = wx_get_stats64, 481 .ndo_vlan_rx_add_vid = wx_vlan_rx_add_vid, 482 .ndo_vlan_rx_kill_vid = wx_vlan_rx_kill_vid, 483 }; 484 485 /** 486 * txgbe_probe - Device Initialization Routine 487 * @pdev: PCI device information struct 488 * @ent: entry in txgbe_pci_tbl 489 * 490 * Returns 0 on success, negative on failure 491 * 492 * txgbe_probe initializes an adapter identified by a pci_dev structure. 493 * The OS initialization, configuring of the wx private structure, 494 * and a hardware reset occur. 495 **/ 496 static int txgbe_probe(struct pci_dev *pdev, 497 const struct pci_device_id __always_unused *ent) 498 { 499 struct net_device *netdev; 500 int err, expected_gts; 501 struct wx *wx = NULL; 502 struct txgbe *txgbe; 503 504 u16 eeprom_verh = 0, eeprom_verl = 0, offset = 0; 505 u16 eeprom_cfg_blkh = 0, eeprom_cfg_blkl = 0; 506 u16 build = 0, major = 0, patch = 0; 507 u32 etrack_id = 0; 508 509 err = pci_enable_device_mem(pdev); 510 if (err) 511 return err; 512 513 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 514 if (err) { 515 dev_err(&pdev->dev, 516 "No usable DMA configuration, aborting\n"); 517 goto err_pci_disable_dev; 518 } 519 520 err = pci_request_selected_regions(pdev, 521 pci_select_bars(pdev, IORESOURCE_MEM), 522 txgbe_driver_name); 523 if (err) { 524 dev_err(&pdev->dev, 525 "pci_request_selected_regions failed 0x%x\n", err); 526 goto err_pci_disable_dev; 527 } 528 529 pci_set_master(pdev); 530 531 netdev = devm_alloc_etherdev_mqs(&pdev->dev, 532 sizeof(struct wx), 533 TXGBE_MAX_TX_QUEUES, 534 TXGBE_MAX_RX_QUEUES); 535 if (!netdev) { 536 err = -ENOMEM; 537 goto err_pci_release_regions; 538 } 539 540 SET_NETDEV_DEV(netdev, &pdev->dev); 541 542 wx = netdev_priv(netdev); 543 wx->netdev = netdev; 544 wx->pdev = pdev; 545 546 wx->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; 547 548 wx->hw_addr = devm_ioremap(&pdev->dev, 549 pci_resource_start(pdev, 0), 550 pci_resource_len(pdev, 0)); 551 if (!wx->hw_addr) { 552 err = -EIO; 553 goto err_pci_release_regions; 554 } 555 556 wx->driver_name = txgbe_driver_name; 557 txgbe_set_ethtool_ops(netdev); 558 netdev->netdev_ops = &txgbe_netdev_ops; 559 560 /* setup the private structure */ 561 err = txgbe_sw_init(wx); 562 if (err) 563 goto err_free_mac_table; 564 565 /* check if flash load is done after hw power up */ 566 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PERST); 567 if (err) 568 goto err_free_mac_table; 569 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PWRRST); 570 if (err) 571 goto err_free_mac_table; 572 573 err = wx_mng_present(wx); 574 if (err) { 575 dev_err(&pdev->dev, "Management capability is not present\n"); 576 goto err_free_mac_table; 577 } 578 579 err = txgbe_reset_hw(wx); 580 if (err) { 581 dev_err(&pdev->dev, "HW Init failed: %d\n", err); 582 goto err_free_mac_table; 583 } 584 585 netdev->features = NETIF_F_SG | 586 NETIF_F_TSO | 587 NETIF_F_TSO6 | 588 NETIF_F_RXHASH | 589 NETIF_F_RXCSUM | 590 NETIF_F_HW_CSUM; 591 592 netdev->gso_partial_features = NETIF_F_GSO_ENCAP_ALL; 593 netdev->features |= netdev->gso_partial_features; 594 netdev->features |= NETIF_F_SCTP_CRC; 595 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID; 596 netdev->hw_enc_features |= netdev->vlan_features; 597 netdev->features |= NETIF_F_VLAN_FEATURES; 598 /* copy netdev features into list of user selectable features */ 599 netdev->hw_features |= netdev->features | NETIF_F_RXALL; 600 netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC; 601 netdev->features |= NETIF_F_HIGHDMA; 602 netdev->hw_features |= NETIF_F_GRO; 603 netdev->features |= NETIF_F_GRO; 604 605 netdev->priv_flags |= IFF_UNICAST_FLT; 606 netdev->priv_flags |= IFF_SUPP_NOFCS; 607 netdev->priv_flags |= IFF_LIVE_ADDR_CHANGE; 608 609 netdev->min_mtu = ETH_MIN_MTU; 610 netdev->max_mtu = WX_MAX_JUMBO_FRAME_SIZE - 611 (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); 612 613 /* make sure the EEPROM is good */ 614 err = txgbe_validate_eeprom_checksum(wx, NULL); 615 if (err != 0) { 616 dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); 617 wr32(wx, WX_MIS_RST, WX_MIS_RST_SW_RST); 618 err = -EIO; 619 goto err_free_mac_table; 620 } 621 622 eth_hw_addr_set(netdev, wx->mac.perm_addr); 623 wx_mac_set_default_filter(wx, wx->mac.perm_addr); 624 625 err = wx_init_interrupt_scheme(wx); 626 if (err) 627 goto err_free_mac_table; 628 629 /* Save off EEPROM version number and Option Rom version which 630 * together make a unique identify for the eeprom 631 */ 632 wx_read_ee_hostif(wx, 633 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_H, 634 &eeprom_verh); 635 wx_read_ee_hostif(wx, 636 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_L, 637 &eeprom_verl); 638 etrack_id = (eeprom_verh << 16) | eeprom_verl; 639 640 wx_read_ee_hostif(wx, 641 wx->eeprom.sw_region_offset + TXGBE_ISCSI_BOOT_CONFIG, 642 &offset); 643 644 /* Make sure offset to SCSI block is valid */ 645 if (!(offset == 0x0) && !(offset == 0xffff)) { 646 wx_read_ee_hostif(wx, offset + 0x84, &eeprom_cfg_blkh); 647 wx_read_ee_hostif(wx, offset + 0x83, &eeprom_cfg_blkl); 648 649 /* Only display Option Rom if exist */ 650 if (eeprom_cfg_blkl && eeprom_cfg_blkh) { 651 major = eeprom_cfg_blkl >> 8; 652 build = (eeprom_cfg_blkl << 8) | (eeprom_cfg_blkh >> 8); 653 patch = eeprom_cfg_blkh & 0x00ff; 654 655 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), 656 "0x%08x, %d.%d.%d", etrack_id, major, build, 657 patch); 658 } else { 659 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), 660 "0x%08x", etrack_id); 661 } 662 } else { 663 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), 664 "0x%08x", etrack_id); 665 } 666 667 if (etrack_id < 0x20010) 668 dev_warn(&pdev->dev, "Please upgrade the firmware to 0x20010 or above.\n"); 669 670 txgbe = devm_kzalloc(&pdev->dev, sizeof(*txgbe), GFP_KERNEL); 671 if (!txgbe) { 672 err = -ENOMEM; 673 goto err_release_hw; 674 } 675 676 txgbe->wx = wx; 677 wx->priv = txgbe; 678 679 txgbe_init_fdir(txgbe); 680 681 err = txgbe_setup_misc_irq(txgbe); 682 if (err) 683 goto err_release_hw; 684 685 err = txgbe_init_phy(txgbe); 686 if (err) 687 goto err_free_misc_irq; 688 689 err = register_netdev(netdev); 690 if (err) 691 goto err_remove_phy; 692 693 pci_set_drvdata(pdev, wx); 694 695 netif_tx_stop_all_queues(netdev); 696 697 /* calculate the expected PCIe bandwidth required for optimal 698 * performance. Note that some older parts will never have enough 699 * bandwidth due to being older generation PCIe parts. We clamp these 700 * parts to ensure that no warning is displayed, as this could confuse 701 * users otherwise. 702 */ 703 expected_gts = txgbe_enumerate_functions(wx) * 10; 704 705 /* don't check link if we failed to enumerate functions */ 706 if (expected_gts > 0) 707 txgbe_check_minimum_link(wx); 708 else 709 dev_warn(&pdev->dev, "Failed to enumerate PF devices.\n"); 710 711 return 0; 712 713 err_remove_phy: 714 txgbe_remove_phy(txgbe); 715 err_free_misc_irq: 716 txgbe_free_misc_irq(txgbe); 717 err_release_hw: 718 wx_clear_interrupt_scheme(wx); 719 wx_control_hw(wx, false); 720 err_free_mac_table: 721 kfree(wx->mac_table); 722 err_pci_release_regions: 723 pci_release_selected_regions(pdev, 724 pci_select_bars(pdev, IORESOURCE_MEM)); 725 err_pci_disable_dev: 726 pci_disable_device(pdev); 727 return err; 728 } 729 730 /** 731 * txgbe_remove - Device Removal Routine 732 * @pdev: PCI device information struct 733 * 734 * txgbe_remove is called by the PCI subsystem to alert the driver 735 * that it should release a PCI device. The could be caused by a 736 * Hot-Plug event, or because the driver is going to be removed from 737 * memory. 738 **/ 739 static void txgbe_remove(struct pci_dev *pdev) 740 { 741 struct wx *wx = pci_get_drvdata(pdev); 742 struct txgbe *txgbe = wx->priv; 743 struct net_device *netdev; 744 745 netdev = wx->netdev; 746 unregister_netdev(netdev); 747 748 txgbe_remove_phy(txgbe); 749 txgbe_free_misc_irq(txgbe); 750 wx_free_isb_resources(wx); 751 752 pci_release_selected_regions(pdev, 753 pci_select_bars(pdev, IORESOURCE_MEM)); 754 755 kfree(wx->rss_key); 756 kfree(wx->mac_table); 757 wx_clear_interrupt_scheme(wx); 758 759 pci_disable_device(pdev); 760 } 761 762 static struct pci_driver txgbe_driver = { 763 .name = txgbe_driver_name, 764 .id_table = txgbe_pci_tbl, 765 .probe = txgbe_probe, 766 .remove = txgbe_remove, 767 .shutdown = txgbe_shutdown, 768 }; 769 770 module_pci_driver(txgbe_driver); 771 772 MODULE_DEVICE_TABLE(pci, txgbe_pci_tbl); 773 MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@trustnetic.com>"); 774 MODULE_DESCRIPTION("WangXun(R) 10 Gigabit PCI Express Network Driver"); 775 MODULE_LICENSE("GPL"); 776