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_ethtool.h" 21 22 char txgbe_driver_name[] = "txgbe"; 23 24 /* txgbe_pci_tbl - PCI Device ID Table 25 * 26 * Wildcard entries (PCI_ANY_ID) should come last 27 * Last entry must be all 0s 28 * 29 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 30 * Class, Class Mask, private data (not used) } 31 */ 32 static const struct pci_device_id txgbe_pci_tbl[] = { 33 { PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_SP1000), 0}, 34 { PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_WX1820), 0}, 35 /* required last entry */ 36 { .device = 0 } 37 }; 38 39 #define DEFAULT_DEBUG_LEVEL_SHIFT 3 40 41 static void txgbe_check_minimum_link(struct wx *wx) 42 { 43 struct pci_dev *pdev; 44 45 pdev = wx->pdev; 46 pcie_print_link_status(pdev); 47 } 48 49 /** 50 * txgbe_enumerate_functions - Get the number of ports this device has 51 * @wx: wx structure 52 * 53 * This function enumerates the phsyical functions co-located on a single slot, 54 * in order to determine how many ports a device has. This is most useful in 55 * determining the required GT/s of PCIe bandwidth necessary for optimal 56 * performance. 57 **/ 58 static int txgbe_enumerate_functions(struct wx *wx) 59 { 60 struct pci_dev *entry, *pdev = wx->pdev; 61 int physfns = 0; 62 63 list_for_each_entry(entry, &pdev->bus->devices, bus_list) { 64 /* When the devices on the bus don't all match our device ID, 65 * we can't reliably determine the correct number of 66 * functions. This can occur if a function has been direct 67 * attached to a virtual machine using VT-d. 68 */ 69 if (entry->vendor != pdev->vendor || 70 entry->device != pdev->device) 71 return -EINVAL; 72 73 physfns++; 74 } 75 76 return physfns; 77 } 78 79 /** 80 * txgbe_irq_enable - Enable default interrupt generation settings 81 * @wx: pointer to private structure 82 * @queues: enable irqs for queues 83 **/ 84 static void txgbe_irq_enable(struct wx *wx, bool queues) 85 { 86 wr32(wx, WX_PX_MISC_IEN, TXGBE_PX_MISC_IEN_MASK); 87 88 /* unmask interrupt */ 89 wx_intr_enable(wx, TXGBE_INTR_MISC(wx)); 90 if (queues) 91 wx_intr_enable(wx, TXGBE_INTR_QALL(wx)); 92 } 93 94 /** 95 * txgbe_intr - msi/legacy mode Interrupt Handler 96 * @irq: interrupt number 97 * @data: pointer to a network interface device structure 98 **/ 99 static irqreturn_t txgbe_intr(int __always_unused irq, void *data) 100 { 101 struct wx_q_vector *q_vector; 102 struct wx *wx = data; 103 struct pci_dev *pdev; 104 u32 eicr; 105 106 q_vector = wx->q_vector[0]; 107 pdev = wx->pdev; 108 109 eicr = wx_misc_isb(wx, WX_ISB_VEC0); 110 if (!eicr) { 111 /* shared interrupt alert! 112 * the interrupt that we masked before the ICR read. 113 */ 114 if (netif_running(wx->netdev)) 115 txgbe_irq_enable(wx, true); 116 return IRQ_NONE; /* Not our interrupt */ 117 } 118 wx->isb_mem[WX_ISB_VEC0] = 0; 119 if (!(pdev->msi_enabled)) 120 wr32(wx, WX_PX_INTA, 1); 121 122 wx->isb_mem[WX_ISB_MISC] = 0; 123 /* would disable interrupts here but it is auto disabled */ 124 napi_schedule_irqoff(&q_vector->napi); 125 126 /* re-enable link(maybe) and non-queue interrupts, no flush. 127 * txgbe_poll will re-enable the queue interrupts 128 */ 129 if (netif_running(wx->netdev)) 130 txgbe_irq_enable(wx, false); 131 132 return IRQ_HANDLED; 133 } 134 135 /** 136 * txgbe_request_msix_irqs - Initialize MSI-X interrupts 137 * @wx: board private structure 138 * 139 * Allocate MSI-X vectors and request interrupts from the kernel. 140 **/ 141 static int txgbe_request_msix_irqs(struct wx *wx) 142 { 143 struct net_device *netdev = wx->netdev; 144 int vector, err; 145 146 for (vector = 0; vector < wx->num_q_vectors; vector++) { 147 struct wx_q_vector *q_vector = wx->q_vector[vector]; 148 struct msix_entry *entry = &wx->msix_entries[vector]; 149 150 if (q_vector->tx.ring && q_vector->rx.ring) 151 snprintf(q_vector->name, sizeof(q_vector->name) - 1, 152 "%s-TxRx-%d", netdev->name, entry->entry); 153 else 154 /* skip this unused q_vector */ 155 continue; 156 157 err = request_irq(entry->vector, wx_msix_clean_rings, 0, 158 q_vector->name, q_vector); 159 if (err) { 160 wx_err(wx, "request_irq failed for MSIX interrupt %s Error: %d\n", 161 q_vector->name, err); 162 goto free_queue_irqs; 163 } 164 } 165 166 return 0; 167 168 free_queue_irqs: 169 while (vector) { 170 vector--; 171 free_irq(wx->msix_entries[vector].vector, 172 wx->q_vector[vector]); 173 } 174 wx_reset_interrupt_capability(wx); 175 return err; 176 } 177 178 /** 179 * txgbe_request_irq - initialize interrupts 180 * @wx: board private structure 181 * 182 * Attempt to configure interrupts using the best available 183 * capabilities of the hardware and kernel. 184 **/ 185 static int txgbe_request_irq(struct wx *wx) 186 { 187 struct net_device *netdev = wx->netdev; 188 struct pci_dev *pdev = wx->pdev; 189 int err; 190 191 if (pdev->msix_enabled) 192 err = txgbe_request_msix_irqs(wx); 193 else if (pdev->msi_enabled) 194 err = request_irq(wx->pdev->irq, &txgbe_intr, 0, 195 netdev->name, wx); 196 else 197 err = request_irq(wx->pdev->irq, &txgbe_intr, IRQF_SHARED, 198 netdev->name, wx); 199 200 if (err) 201 wx_err(wx, "request_irq failed, Error %d\n", err); 202 203 return err; 204 } 205 206 static void txgbe_up_complete(struct wx *wx) 207 { 208 struct net_device *netdev = wx->netdev; 209 struct txgbe *txgbe; 210 211 wx_control_hw(wx, true); 212 wx_configure_vectors(wx); 213 214 /* make sure to complete pre-operations */ 215 smp_mb__before_atomic(); 216 wx_napi_enable_all(wx); 217 218 txgbe = netdev_to_txgbe(netdev); 219 phylink_start(txgbe->phylink); 220 221 /* clear any pending interrupts, may auto mask */ 222 rd32(wx, WX_PX_IC(0)); 223 rd32(wx, WX_PX_IC(1)); 224 rd32(wx, WX_PX_MISC_IC); 225 txgbe_irq_enable(wx, true); 226 227 /* enable transmits */ 228 netif_tx_start_all_queues(netdev); 229 } 230 231 static void txgbe_reset(struct wx *wx) 232 { 233 struct net_device *netdev = wx->netdev; 234 u8 old_addr[ETH_ALEN]; 235 int err; 236 237 err = txgbe_reset_hw(wx); 238 if (err != 0) 239 wx_err(wx, "Hardware Error: %d\n", err); 240 241 wx_start_hw(wx); 242 /* do not flush user set addresses */ 243 memcpy(old_addr, &wx->mac_table[0].addr, netdev->addr_len); 244 wx_flush_sw_mac_table(wx); 245 wx_mac_set_default_filter(wx, old_addr); 246 } 247 248 static void txgbe_disable_device(struct wx *wx) 249 { 250 struct net_device *netdev = wx->netdev; 251 u32 i; 252 253 wx_disable_pcie_master(wx); 254 /* disable receives */ 255 wx_disable_rx(wx); 256 257 /* disable all enabled rx queues */ 258 for (i = 0; i < wx->num_rx_queues; i++) 259 /* this call also flushes the previous write */ 260 wx_disable_rx_queue(wx, wx->rx_ring[i]); 261 262 netif_tx_stop_all_queues(netdev); 263 netif_tx_disable(netdev); 264 265 wx_irq_disable(wx); 266 wx_napi_disable_all(wx); 267 268 if (wx->bus.func < 2) 269 wr32m(wx, TXGBE_MIS_PRB_CTL, TXGBE_MIS_PRB_CTL_LAN_UP(wx->bus.func), 0); 270 else 271 wx_err(wx, "%s: invalid bus lan id %d\n", 272 __func__, wx->bus.func); 273 274 if (!(((wx->subsystem_device_id & WX_NCSI_MASK) == WX_NCSI_SUP) || 275 ((wx->subsystem_device_id & WX_WOL_MASK) == WX_WOL_SUP))) { 276 /* disable mac transmiter */ 277 wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0); 278 } 279 280 /* disable transmits in the hardware now that interrupts are off */ 281 for (i = 0; i < wx->num_tx_queues; i++) { 282 u8 reg_idx = wx->tx_ring[i]->reg_idx; 283 284 wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH); 285 } 286 287 /* Disable the Tx DMA engine */ 288 wr32m(wx, WX_TDM_CTL, WX_TDM_CTL_TE, 0); 289 290 wx_update_stats(wx); 291 } 292 293 static void txgbe_down(struct wx *wx) 294 { 295 struct txgbe *txgbe = netdev_to_txgbe(wx->netdev); 296 297 txgbe_disable_device(wx); 298 txgbe_reset(wx); 299 phylink_stop(txgbe->phylink); 300 301 wx_clean_all_tx_rings(wx); 302 wx_clean_all_rx_rings(wx); 303 } 304 305 /** 306 * txgbe_init_type_code - Initialize the shared code 307 * @wx: pointer to hardware structure 308 **/ 309 static void txgbe_init_type_code(struct wx *wx) 310 { 311 u8 device_type = wx->subsystem_device_id & 0xF0; 312 313 switch (wx->device_id) { 314 case TXGBE_DEV_ID_SP1000: 315 case TXGBE_DEV_ID_WX1820: 316 wx->mac.type = wx_mac_sp; 317 break; 318 default: 319 wx->mac.type = wx_mac_unknown; 320 break; 321 } 322 323 switch (device_type) { 324 case TXGBE_ID_SFP: 325 wx->media_type = sp_media_fiber; 326 break; 327 case TXGBE_ID_XAUI: 328 case TXGBE_ID_SGMII: 329 wx->media_type = sp_media_copper; 330 break; 331 case TXGBE_ID_KR_KX_KX4: 332 case TXGBE_ID_MAC_XAUI: 333 case TXGBE_ID_MAC_SGMII: 334 wx->media_type = sp_media_backplane; 335 break; 336 case TXGBE_ID_SFI_XAUI: 337 if (wx->bus.func == 0) 338 wx->media_type = sp_media_fiber; 339 else 340 wx->media_type = sp_media_copper; 341 break; 342 default: 343 wx->media_type = sp_media_unknown; 344 break; 345 } 346 } 347 348 /** 349 * txgbe_sw_init - Initialize general software structures (struct wx) 350 * @wx: board private structure to initialize 351 **/ 352 static int txgbe_sw_init(struct wx *wx) 353 { 354 u16 msix_count = 0; 355 int err; 356 357 wx->mac.num_rar_entries = TXGBE_SP_RAR_ENTRIES; 358 wx->mac.max_tx_queues = TXGBE_SP_MAX_TX_QUEUES; 359 wx->mac.max_rx_queues = TXGBE_SP_MAX_RX_QUEUES; 360 wx->mac.mcft_size = TXGBE_SP_MC_TBL_SIZE; 361 wx->mac.vft_size = TXGBE_SP_VFT_TBL_SIZE; 362 wx->mac.rx_pb_size = TXGBE_SP_RX_PB_SIZE; 363 wx->mac.tx_pb_size = TXGBE_SP_TDB_PB_SZ; 364 365 /* PCI config space info */ 366 err = wx_sw_init(wx); 367 if (err < 0) 368 return err; 369 370 txgbe_init_type_code(wx); 371 372 /* Set common capability flags and settings */ 373 wx->max_q_vectors = TXGBE_MAX_MSIX_VECTORS; 374 err = wx_get_pcie_msix_counts(wx, &msix_count, TXGBE_MAX_MSIX_VECTORS); 375 if (err) 376 wx_err(wx, "Do not support MSI-X\n"); 377 wx->mac.max_msix_vectors = msix_count; 378 379 /* enable itr by default in dynamic mode */ 380 wx->rx_itr_setting = 1; 381 wx->tx_itr_setting = 1; 382 383 /* set default ring sizes */ 384 wx->tx_ring_count = TXGBE_DEFAULT_TXD; 385 wx->rx_ring_count = TXGBE_DEFAULT_RXD; 386 387 /* set default work limits */ 388 wx->tx_work_limit = TXGBE_DEFAULT_TX_WORK; 389 wx->rx_work_limit = TXGBE_DEFAULT_RX_WORK; 390 391 return 0; 392 } 393 394 /** 395 * txgbe_open - Called when a network interface is made active 396 * @netdev: network interface device structure 397 * 398 * Returns 0 on success, negative value on failure 399 * 400 * The open entry point is called when a network interface is made 401 * active by the system (IFF_UP). 402 **/ 403 static int txgbe_open(struct net_device *netdev) 404 { 405 struct wx *wx = netdev_priv(netdev); 406 int err; 407 408 err = wx_setup_resources(wx); 409 if (err) 410 goto err_reset; 411 412 wx_configure(wx); 413 414 err = txgbe_request_irq(wx); 415 if (err) 416 goto err_free_isb; 417 418 /* Notify the stack of the actual queue counts. */ 419 err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues); 420 if (err) 421 goto err_free_irq; 422 423 err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues); 424 if (err) 425 goto err_free_irq; 426 427 txgbe_up_complete(wx); 428 429 return 0; 430 431 err_free_irq: 432 wx_free_irq(wx); 433 err_free_isb: 434 wx_free_isb_resources(wx); 435 err_reset: 436 txgbe_reset(wx); 437 438 return err; 439 } 440 441 /** 442 * txgbe_close_suspend - actions necessary to both suspend and close flows 443 * @wx: the private wx struct 444 * 445 * This function should contain the necessary work common to both suspending 446 * and closing of the device. 447 */ 448 static void txgbe_close_suspend(struct wx *wx) 449 { 450 txgbe_disable_device(wx); 451 wx_free_resources(wx); 452 } 453 454 /** 455 * txgbe_close - Disables a network interface 456 * @netdev: network interface device structure 457 * 458 * Returns 0, this is not allowed to fail 459 * 460 * The close entry point is called when an interface is de-activated 461 * by the OS. The hardware is still under the drivers control, but 462 * needs to be disabled. A global MAC reset is issued to stop the 463 * hardware, and all transmit and receive resources are freed. 464 **/ 465 static int txgbe_close(struct net_device *netdev) 466 { 467 struct wx *wx = netdev_priv(netdev); 468 469 txgbe_down(wx); 470 wx_free_irq(wx); 471 wx_free_resources(wx); 472 wx_control_hw(wx, false); 473 474 return 0; 475 } 476 477 static void txgbe_dev_shutdown(struct pci_dev *pdev) 478 { 479 struct wx *wx = pci_get_drvdata(pdev); 480 struct net_device *netdev; 481 482 netdev = wx->netdev; 483 netif_device_detach(netdev); 484 485 rtnl_lock(); 486 if (netif_running(netdev)) 487 txgbe_close_suspend(wx); 488 rtnl_unlock(); 489 490 wx_control_hw(wx, false); 491 492 pci_disable_device(pdev); 493 } 494 495 static void txgbe_shutdown(struct pci_dev *pdev) 496 { 497 txgbe_dev_shutdown(pdev); 498 499 if (system_state == SYSTEM_POWER_OFF) { 500 pci_wake_from_d3(pdev, false); 501 pci_set_power_state(pdev, PCI_D3hot); 502 } 503 } 504 505 static const struct net_device_ops txgbe_netdev_ops = { 506 .ndo_open = txgbe_open, 507 .ndo_stop = txgbe_close, 508 .ndo_change_mtu = wx_change_mtu, 509 .ndo_start_xmit = wx_xmit_frame, 510 .ndo_set_rx_mode = wx_set_rx_mode, 511 .ndo_set_features = wx_set_features, 512 .ndo_validate_addr = eth_validate_addr, 513 .ndo_set_mac_address = wx_set_mac, 514 .ndo_get_stats64 = wx_get_stats64, 515 .ndo_vlan_rx_add_vid = wx_vlan_rx_add_vid, 516 .ndo_vlan_rx_kill_vid = wx_vlan_rx_kill_vid, 517 }; 518 519 /** 520 * txgbe_probe - Device Initialization Routine 521 * @pdev: PCI device information struct 522 * @ent: entry in txgbe_pci_tbl 523 * 524 * Returns 0 on success, negative on failure 525 * 526 * txgbe_probe initializes an adapter identified by a pci_dev structure. 527 * The OS initialization, configuring of the wx private structure, 528 * and a hardware reset occur. 529 **/ 530 static int txgbe_probe(struct pci_dev *pdev, 531 const struct pci_device_id __always_unused *ent) 532 { 533 struct net_device *netdev; 534 int err, expected_gts; 535 struct wx *wx = NULL; 536 struct txgbe *txgbe; 537 538 u16 eeprom_verh = 0, eeprom_verl = 0, offset = 0; 539 u16 eeprom_cfg_blkh = 0, eeprom_cfg_blkl = 0; 540 u16 build = 0, major = 0, patch = 0; 541 u32 etrack_id = 0; 542 543 err = pci_enable_device_mem(pdev); 544 if (err) 545 return err; 546 547 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 548 if (err) { 549 dev_err(&pdev->dev, 550 "No usable DMA configuration, aborting\n"); 551 goto err_pci_disable_dev; 552 } 553 554 err = pci_request_selected_regions(pdev, 555 pci_select_bars(pdev, IORESOURCE_MEM), 556 txgbe_driver_name); 557 if (err) { 558 dev_err(&pdev->dev, 559 "pci_request_selected_regions failed 0x%x\n", err); 560 goto err_pci_disable_dev; 561 } 562 563 pci_set_master(pdev); 564 565 netdev = devm_alloc_etherdev_mqs(&pdev->dev, 566 sizeof(struct wx), 567 TXGBE_MAX_TX_QUEUES, 568 TXGBE_MAX_RX_QUEUES); 569 if (!netdev) { 570 err = -ENOMEM; 571 goto err_pci_release_regions; 572 } 573 574 SET_NETDEV_DEV(netdev, &pdev->dev); 575 576 wx = netdev_priv(netdev); 577 wx->netdev = netdev; 578 wx->pdev = pdev; 579 580 wx->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; 581 582 wx->hw_addr = devm_ioremap(&pdev->dev, 583 pci_resource_start(pdev, 0), 584 pci_resource_len(pdev, 0)); 585 if (!wx->hw_addr) { 586 err = -EIO; 587 goto err_pci_release_regions; 588 } 589 590 wx->driver_name = txgbe_driver_name; 591 txgbe_set_ethtool_ops(netdev); 592 netdev->netdev_ops = &txgbe_netdev_ops; 593 594 /* setup the private structure */ 595 err = txgbe_sw_init(wx); 596 if (err) 597 goto err_free_mac_table; 598 599 /* check if flash load is done after hw power up */ 600 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PERST); 601 if (err) 602 goto err_free_mac_table; 603 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PWRRST); 604 if (err) 605 goto err_free_mac_table; 606 607 err = wx_mng_present(wx); 608 if (err) { 609 dev_err(&pdev->dev, "Management capability is not present\n"); 610 goto err_free_mac_table; 611 } 612 613 err = txgbe_reset_hw(wx); 614 if (err) { 615 dev_err(&pdev->dev, "HW Init failed: %d\n", err); 616 goto err_free_mac_table; 617 } 618 619 netdev->features = NETIF_F_SG | 620 NETIF_F_TSO | 621 NETIF_F_TSO6 | 622 NETIF_F_RXHASH | 623 NETIF_F_RXCSUM | 624 NETIF_F_HW_CSUM; 625 626 netdev->gso_partial_features = NETIF_F_GSO_ENCAP_ALL; 627 netdev->features |= netdev->gso_partial_features; 628 netdev->features |= NETIF_F_SCTP_CRC; 629 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID; 630 netdev->hw_enc_features |= netdev->vlan_features; 631 netdev->features |= NETIF_F_VLAN_FEATURES; 632 /* copy netdev features into list of user selectable features */ 633 netdev->hw_features |= netdev->features | NETIF_F_RXALL; 634 netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC; 635 netdev->features |= NETIF_F_HIGHDMA; 636 netdev->hw_features |= NETIF_F_GRO; 637 netdev->features |= NETIF_F_GRO; 638 639 netdev->priv_flags |= IFF_UNICAST_FLT; 640 netdev->priv_flags |= IFF_SUPP_NOFCS; 641 642 netdev->min_mtu = ETH_MIN_MTU; 643 netdev->max_mtu = WX_MAX_JUMBO_FRAME_SIZE - 644 (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); 645 646 /* make sure the EEPROM is good */ 647 err = txgbe_validate_eeprom_checksum(wx, NULL); 648 if (err != 0) { 649 dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); 650 wr32(wx, WX_MIS_RST, WX_MIS_RST_SW_RST); 651 err = -EIO; 652 goto err_free_mac_table; 653 } 654 655 eth_hw_addr_set(netdev, wx->mac.perm_addr); 656 wx_mac_set_default_filter(wx, wx->mac.perm_addr); 657 658 err = wx_init_interrupt_scheme(wx); 659 if (err) 660 goto err_free_mac_table; 661 662 /* Save off EEPROM version number and Option Rom version which 663 * together make a unique identify for the eeprom 664 */ 665 wx_read_ee_hostif(wx, 666 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_H, 667 &eeprom_verh); 668 wx_read_ee_hostif(wx, 669 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_L, 670 &eeprom_verl); 671 etrack_id = (eeprom_verh << 16) | eeprom_verl; 672 673 wx_read_ee_hostif(wx, 674 wx->eeprom.sw_region_offset + TXGBE_ISCSI_BOOT_CONFIG, 675 &offset); 676 677 /* Make sure offset to SCSI block is valid */ 678 if (!(offset == 0x0) && !(offset == 0xffff)) { 679 wx_read_ee_hostif(wx, offset + 0x84, &eeprom_cfg_blkh); 680 wx_read_ee_hostif(wx, offset + 0x83, &eeprom_cfg_blkl); 681 682 /* Only display Option Rom if exist */ 683 if (eeprom_cfg_blkl && eeprom_cfg_blkh) { 684 major = eeprom_cfg_blkl >> 8; 685 build = (eeprom_cfg_blkl << 8) | (eeprom_cfg_blkh >> 8); 686 patch = eeprom_cfg_blkh & 0x00ff; 687 688 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), 689 "0x%08x, %d.%d.%d", etrack_id, major, build, 690 patch); 691 } else { 692 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), 693 "0x%08x", etrack_id); 694 } 695 } else { 696 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), 697 "0x%08x", etrack_id); 698 } 699 700 if (etrack_id < 0x20010) 701 dev_warn(&pdev->dev, "Please upgrade the firmware to 0x20010 or above.\n"); 702 703 txgbe = devm_kzalloc(&pdev->dev, sizeof(*txgbe), GFP_KERNEL); 704 if (!txgbe) { 705 err = -ENOMEM; 706 goto err_release_hw; 707 } 708 709 txgbe->wx = wx; 710 wx->priv = txgbe; 711 712 err = txgbe_init_phy(txgbe); 713 if (err) 714 goto err_release_hw; 715 716 err = register_netdev(netdev); 717 if (err) 718 goto err_remove_phy; 719 720 pci_set_drvdata(pdev, wx); 721 722 netif_tx_stop_all_queues(netdev); 723 724 /* calculate the expected PCIe bandwidth required for optimal 725 * performance. Note that some older parts will never have enough 726 * bandwidth due to being older generation PCIe parts. We clamp these 727 * parts to ensure that no warning is displayed, as this could confuse 728 * users otherwise. 729 */ 730 expected_gts = txgbe_enumerate_functions(wx) * 10; 731 732 /* don't check link if we failed to enumerate functions */ 733 if (expected_gts > 0) 734 txgbe_check_minimum_link(wx); 735 else 736 dev_warn(&pdev->dev, "Failed to enumerate PF devices.\n"); 737 738 return 0; 739 740 err_remove_phy: 741 txgbe_remove_phy(txgbe); 742 err_release_hw: 743 wx_clear_interrupt_scheme(wx); 744 wx_control_hw(wx, false); 745 err_free_mac_table: 746 kfree(wx->mac_table); 747 err_pci_release_regions: 748 pci_release_selected_regions(pdev, 749 pci_select_bars(pdev, IORESOURCE_MEM)); 750 err_pci_disable_dev: 751 pci_disable_device(pdev); 752 return err; 753 } 754 755 /** 756 * txgbe_remove - Device Removal Routine 757 * @pdev: PCI device information struct 758 * 759 * txgbe_remove is called by the PCI subsystem to alert the driver 760 * that it should release a PCI device. The could be caused by a 761 * Hot-Plug event, or because the driver is going to be removed from 762 * memory. 763 **/ 764 static void txgbe_remove(struct pci_dev *pdev) 765 { 766 struct wx *wx = pci_get_drvdata(pdev); 767 struct txgbe *txgbe = wx->priv; 768 struct net_device *netdev; 769 770 netdev = wx->netdev; 771 unregister_netdev(netdev); 772 773 txgbe_remove_phy(txgbe); 774 775 pci_release_selected_regions(pdev, 776 pci_select_bars(pdev, IORESOURCE_MEM)); 777 778 kfree(wx->mac_table); 779 wx_clear_interrupt_scheme(wx); 780 781 pci_disable_device(pdev); 782 } 783 784 static struct pci_driver txgbe_driver = { 785 .name = txgbe_driver_name, 786 .id_table = txgbe_pci_tbl, 787 .probe = txgbe_probe, 788 .remove = txgbe_remove, 789 .shutdown = txgbe_shutdown, 790 }; 791 792 module_pci_driver(txgbe_driver); 793 794 MODULE_DEVICE_TABLE(pci, txgbe_pci_tbl); 795 MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@trustnetic.com>"); 796 MODULE_DESCRIPTION("WangXun(R) 10 Gigabit PCI Express Network Driver"); 797 MODULE_LICENSE("GPL"); 798