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