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/aer.h> 10 #include <linux/etherdevice.h> 11 #include <net/ip.h> 12 13 #include "../libwx/wx_type.h" 14 #include "../libwx/wx_lib.h" 15 #include "../libwx/wx_hw.h" 16 #include "txgbe_type.h" 17 #include "txgbe_hw.h" 18 #include "txgbe_ethtool.h" 19 20 char txgbe_driver_name[] = "txgbe"; 21 22 /* txgbe_pci_tbl - PCI Device ID Table 23 * 24 * Wildcard entries (PCI_ANY_ID) should come last 25 * Last entry must be all 0s 26 * 27 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 28 * Class, Class Mask, private data (not used) } 29 */ 30 static const struct pci_device_id txgbe_pci_tbl[] = { 31 { PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_SP1000), 0}, 32 { PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_WX1820), 0}, 33 /* required last entry */ 34 { .device = 0 } 35 }; 36 37 #define DEFAULT_DEBUG_LEVEL_SHIFT 3 38 39 static void txgbe_check_minimum_link(struct wx *wx) 40 { 41 struct pci_dev *pdev; 42 43 pdev = wx->pdev; 44 pcie_print_link_status(pdev); 45 } 46 47 /** 48 * txgbe_enumerate_functions - Get the number of ports this device has 49 * @wx: wx structure 50 * 51 * This function enumerates the phsyical functions co-located on a single slot, 52 * in order to determine how many ports a device has. This is most useful in 53 * determining the required GT/s of PCIe bandwidth necessary for optimal 54 * performance. 55 **/ 56 static int txgbe_enumerate_functions(struct wx *wx) 57 { 58 struct pci_dev *entry, *pdev = wx->pdev; 59 int physfns = 0; 60 61 list_for_each_entry(entry, &pdev->bus->devices, bus_list) { 62 /* When the devices on the bus don't all match our device ID, 63 * we can't reliably determine the correct number of 64 * functions. This can occur if a function has been direct 65 * attached to a virtual machine using VT-d. 66 */ 67 if (entry->vendor != pdev->vendor || 68 entry->device != pdev->device) 69 return -EINVAL; 70 71 physfns++; 72 } 73 74 return physfns; 75 } 76 77 /** 78 * txgbe_irq_enable - Enable default interrupt generation settings 79 * @wx: pointer to private structure 80 * @queues: enable irqs for queues 81 **/ 82 static void txgbe_irq_enable(struct wx *wx, bool queues) 83 { 84 /* unmask interrupt */ 85 wx_intr_enable(wx, TXGBE_INTR_MISC(wx)); 86 if (queues) 87 wx_intr_enable(wx, TXGBE_INTR_QALL(wx)); 88 } 89 90 /** 91 * txgbe_intr - msi/legacy mode Interrupt Handler 92 * @irq: interrupt number 93 * @data: pointer to a network interface device structure 94 **/ 95 static irqreturn_t txgbe_intr(int __always_unused irq, void *data) 96 { 97 struct wx_q_vector *q_vector; 98 struct wx *wx = data; 99 struct pci_dev *pdev; 100 u32 eicr; 101 102 q_vector = wx->q_vector[0]; 103 pdev = wx->pdev; 104 105 eicr = wx_misc_isb(wx, WX_ISB_VEC0); 106 if (!eicr) { 107 /* shared interrupt alert! 108 * the interrupt that we masked before the ICR read. 109 */ 110 if (netif_running(wx->netdev)) 111 txgbe_irq_enable(wx, true); 112 return IRQ_NONE; /* Not our interrupt */ 113 } 114 wx->isb_mem[WX_ISB_VEC0] = 0; 115 if (!(pdev->msi_enabled)) 116 wr32(wx, WX_PX_INTA, 1); 117 118 wx->isb_mem[WX_ISB_MISC] = 0; 119 /* would disable interrupts here but it is auto disabled */ 120 napi_schedule_irqoff(&q_vector->napi); 121 122 /* re-enable link(maybe) and non-queue interrupts, no flush. 123 * txgbe_poll will re-enable the queue interrupts 124 */ 125 if (netif_running(wx->netdev)) 126 txgbe_irq_enable(wx, false); 127 128 return IRQ_HANDLED; 129 } 130 131 static irqreturn_t txgbe_msix_other(int __always_unused irq, void *data) 132 { 133 struct wx *wx = data; 134 135 /* re-enable the original interrupt state */ 136 if (netif_running(wx->netdev)) 137 txgbe_irq_enable(wx, false); 138 139 return IRQ_HANDLED; 140 } 141 142 /** 143 * txgbe_request_msix_irqs - Initialize MSI-X interrupts 144 * @wx: board private structure 145 * 146 * Allocate MSI-X vectors and request interrupts from the kernel. 147 **/ 148 static int txgbe_request_msix_irqs(struct wx *wx) 149 { 150 struct net_device *netdev = wx->netdev; 151 int vector, err; 152 153 for (vector = 0; vector < wx->num_q_vectors; vector++) { 154 struct wx_q_vector *q_vector = wx->q_vector[vector]; 155 struct msix_entry *entry = &wx->msix_entries[vector]; 156 157 if (q_vector->tx.ring && q_vector->rx.ring) 158 snprintf(q_vector->name, sizeof(q_vector->name) - 1, 159 "%s-TxRx-%d", netdev->name, entry->entry); 160 else 161 /* skip this unused q_vector */ 162 continue; 163 164 err = request_irq(entry->vector, wx_msix_clean_rings, 0, 165 q_vector->name, q_vector); 166 if (err) { 167 wx_err(wx, "request_irq failed for MSIX interrupt %s Error: %d\n", 168 q_vector->name, err); 169 goto free_queue_irqs; 170 } 171 } 172 173 err = request_irq(wx->msix_entries[vector].vector, 174 txgbe_msix_other, 0, netdev->name, wx); 175 if (err) { 176 wx_err(wx, "request_irq for msix_other failed: %d\n", err); 177 goto free_queue_irqs; 178 } 179 180 return 0; 181 182 free_queue_irqs: 183 while (vector) { 184 vector--; 185 free_irq(wx->msix_entries[vector].vector, 186 wx->q_vector[vector]); 187 } 188 wx_reset_interrupt_capability(wx); 189 return err; 190 } 191 192 /** 193 * txgbe_request_irq - initialize interrupts 194 * @wx: board private structure 195 * 196 * Attempt to configure interrupts using the best available 197 * capabilities of the hardware and kernel. 198 **/ 199 static int txgbe_request_irq(struct wx *wx) 200 { 201 struct net_device *netdev = wx->netdev; 202 struct pci_dev *pdev = wx->pdev; 203 int err; 204 205 if (pdev->msix_enabled) 206 err = txgbe_request_msix_irqs(wx); 207 else if (pdev->msi_enabled) 208 err = request_irq(wx->pdev->irq, &txgbe_intr, 0, 209 netdev->name, wx); 210 else 211 err = request_irq(wx->pdev->irq, &txgbe_intr, IRQF_SHARED, 212 netdev->name, wx); 213 214 if (err) 215 wx_err(wx, "request_irq failed, Error %d\n", err); 216 217 return err; 218 } 219 220 static void txgbe_up_complete(struct wx *wx) 221 { 222 u32 reg; 223 224 wx_control_hw(wx, true); 225 wx_configure_vectors(wx); 226 227 /* make sure to complete pre-operations */ 228 smp_mb__before_atomic(); 229 wx_napi_enable_all(wx); 230 231 /* clear any pending interrupts, may auto mask */ 232 rd32(wx, WX_PX_IC); 233 rd32(wx, WX_PX_MISC_IC); 234 txgbe_irq_enable(wx, true); 235 236 /* Configure MAC Rx and Tx when link is up */ 237 reg = rd32(wx, WX_MAC_RX_CFG); 238 wr32(wx, WX_MAC_RX_CFG, reg); 239 wr32(wx, WX_MAC_PKT_FLT, WX_MAC_PKT_FLT_PR); 240 reg = rd32(wx, WX_MAC_WDG_TIMEOUT); 241 wr32(wx, WX_MAC_WDG_TIMEOUT, reg); 242 reg = rd32(wx, WX_MAC_TX_CFG); 243 wr32(wx, WX_MAC_TX_CFG, (reg & ~WX_MAC_TX_CFG_SPEED_MASK) | WX_MAC_TX_CFG_SPEED_10G); 244 245 /* enable transmits */ 246 netif_tx_start_all_queues(wx->netdev); 247 netif_carrier_on(wx->netdev); 248 } 249 250 static void txgbe_reset(struct wx *wx) 251 { 252 struct net_device *netdev = wx->netdev; 253 u8 old_addr[ETH_ALEN]; 254 int err; 255 256 err = txgbe_reset_hw(wx); 257 if (err != 0) 258 wx_err(wx, "Hardware Error: %d\n", err); 259 260 /* do not flush user set addresses */ 261 memcpy(old_addr, &wx->mac_table[0].addr, netdev->addr_len); 262 wx_flush_sw_mac_table(wx); 263 wx_mac_set_default_filter(wx, old_addr); 264 } 265 266 static void txgbe_disable_device(struct wx *wx) 267 { 268 struct net_device *netdev = wx->netdev; 269 u32 i; 270 271 wx_disable_pcie_master(wx); 272 /* disable receives */ 273 wx_disable_rx(wx); 274 275 /* disable all enabled rx queues */ 276 for (i = 0; i < wx->num_rx_queues; i++) 277 /* this call also flushes the previous write */ 278 wx_disable_rx_queue(wx, wx->rx_ring[i]); 279 280 netif_tx_stop_all_queues(netdev); 281 netif_carrier_off(netdev); 282 netif_tx_disable(netdev); 283 284 wx_irq_disable(wx); 285 wx_napi_disable_all(wx); 286 287 if (wx->bus.func < 2) 288 wr32m(wx, TXGBE_MIS_PRB_CTL, TXGBE_MIS_PRB_CTL_LAN_UP(wx->bus.func), 0); 289 else 290 wx_err(wx, "%s: invalid bus lan id %d\n", 291 __func__, wx->bus.func); 292 293 if (!(((wx->subsystem_device_id & WX_NCSI_MASK) == WX_NCSI_SUP) || 294 ((wx->subsystem_device_id & WX_WOL_MASK) == WX_WOL_SUP))) { 295 /* disable mac transmiter */ 296 wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0); 297 } 298 299 /* disable transmits in the hardware now that interrupts are off */ 300 for (i = 0; i < wx->num_tx_queues; i++) { 301 u8 reg_idx = wx->tx_ring[i]->reg_idx; 302 303 wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH); 304 } 305 306 /* Disable the Tx DMA engine */ 307 wr32m(wx, WX_TDM_CTL, WX_TDM_CTL_TE, 0); 308 } 309 310 static void txgbe_down(struct wx *wx) 311 { 312 txgbe_disable_device(wx); 313 txgbe_reset(wx); 314 315 wx_clean_all_tx_rings(wx); 316 wx_clean_all_rx_rings(wx); 317 } 318 319 /** 320 * txgbe_sw_init - Initialize general software structures (struct wx) 321 * @wx: board private structure to initialize 322 **/ 323 static int txgbe_sw_init(struct wx *wx) 324 { 325 u16 msix_count = 0; 326 int err; 327 328 wx->mac.num_rar_entries = TXGBE_SP_RAR_ENTRIES; 329 wx->mac.max_tx_queues = TXGBE_SP_MAX_TX_QUEUES; 330 wx->mac.max_rx_queues = TXGBE_SP_MAX_RX_QUEUES; 331 wx->mac.mcft_size = TXGBE_SP_MC_TBL_SIZE; 332 wx->mac.rx_pb_size = TXGBE_SP_RX_PB_SIZE; 333 wx->mac.tx_pb_size = TXGBE_SP_TDB_PB_SZ; 334 335 /* PCI config space info */ 336 err = wx_sw_init(wx); 337 if (err < 0) { 338 wx_err(wx, "read of internal subsystem device id failed\n"); 339 return err; 340 } 341 342 switch (wx->device_id) { 343 case TXGBE_DEV_ID_SP1000: 344 case TXGBE_DEV_ID_WX1820: 345 wx->mac.type = wx_mac_sp; 346 break; 347 default: 348 wx->mac.type = wx_mac_unknown; 349 break; 350 } 351 352 /* Set common capability flags and settings */ 353 wx->max_q_vectors = TXGBE_MAX_MSIX_VECTORS; 354 err = wx_get_pcie_msix_counts(wx, &msix_count, TXGBE_MAX_MSIX_VECTORS); 355 if (err) 356 wx_err(wx, "Do not support MSI-X\n"); 357 wx->mac.max_msix_vectors = msix_count; 358 359 /* enable itr by default in dynamic mode */ 360 wx->rx_itr_setting = 1; 361 wx->tx_itr_setting = 1; 362 363 /* set default ring sizes */ 364 wx->tx_ring_count = TXGBE_DEFAULT_TXD; 365 wx->rx_ring_count = TXGBE_DEFAULT_RXD; 366 367 /* set default work limits */ 368 wx->tx_work_limit = TXGBE_DEFAULT_TX_WORK; 369 wx->rx_work_limit = TXGBE_DEFAULT_RX_WORK; 370 371 return 0; 372 } 373 374 /** 375 * txgbe_open - Called when a network interface is made active 376 * @netdev: network interface device structure 377 * 378 * Returns 0 on success, negative value on failure 379 * 380 * The open entry point is called when a network interface is made 381 * active by the system (IFF_UP). 382 **/ 383 static int txgbe_open(struct net_device *netdev) 384 { 385 struct wx *wx = netdev_priv(netdev); 386 int err; 387 388 err = wx_setup_resources(wx); 389 if (err) 390 goto err_reset; 391 392 wx_configure(wx); 393 394 err = txgbe_request_irq(wx); 395 if (err) 396 goto err_free_isb; 397 398 /* Notify the stack of the actual queue counts. */ 399 err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues); 400 if (err) 401 goto err_free_irq; 402 403 err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues); 404 if (err) 405 goto err_free_irq; 406 407 txgbe_up_complete(wx); 408 409 return 0; 410 411 err_free_irq: 412 wx_free_irq(wx); 413 err_free_isb: 414 wx_free_isb_resources(wx); 415 err_reset: 416 txgbe_reset(wx); 417 418 return err; 419 } 420 421 /** 422 * txgbe_close_suspend - actions necessary to both suspend and close flows 423 * @wx: the private wx struct 424 * 425 * This function should contain the necessary work common to both suspending 426 * and closing of the device. 427 */ 428 static void txgbe_close_suspend(struct wx *wx) 429 { 430 txgbe_disable_device(wx); 431 wx_free_resources(wx); 432 } 433 434 /** 435 * txgbe_close - Disables a network interface 436 * @netdev: network interface device structure 437 * 438 * Returns 0, this is not allowed to fail 439 * 440 * The close entry point is called when an interface is de-activated 441 * by the OS. The hardware is still under the drivers control, but 442 * needs to be disabled. A global MAC reset is issued to stop the 443 * hardware, and all transmit and receive resources are freed. 444 **/ 445 static int txgbe_close(struct net_device *netdev) 446 { 447 struct wx *wx = netdev_priv(netdev); 448 449 txgbe_down(wx); 450 wx_free_irq(wx); 451 wx_free_resources(wx); 452 wx_control_hw(wx, false); 453 454 return 0; 455 } 456 457 static void txgbe_dev_shutdown(struct pci_dev *pdev, bool *enable_wake) 458 { 459 struct wx *wx = pci_get_drvdata(pdev); 460 struct net_device *netdev; 461 462 netdev = wx->netdev; 463 netif_device_detach(netdev); 464 465 rtnl_lock(); 466 if (netif_running(netdev)) 467 txgbe_close_suspend(wx); 468 rtnl_unlock(); 469 470 wx_control_hw(wx, false); 471 472 pci_disable_device(pdev); 473 } 474 475 static void txgbe_shutdown(struct pci_dev *pdev) 476 { 477 bool wake; 478 479 txgbe_dev_shutdown(pdev, &wake); 480 481 if (system_state == SYSTEM_POWER_OFF) { 482 pci_wake_from_d3(pdev, wake); 483 pci_set_power_state(pdev, PCI_D3hot); 484 } 485 } 486 487 static const struct net_device_ops txgbe_netdev_ops = { 488 .ndo_open = txgbe_open, 489 .ndo_stop = txgbe_close, 490 .ndo_start_xmit = wx_xmit_frame, 491 .ndo_set_rx_mode = wx_set_rx_mode, 492 .ndo_validate_addr = eth_validate_addr, 493 .ndo_set_mac_address = wx_set_mac, 494 .ndo_get_stats64 = wx_get_stats64, 495 }; 496 497 /** 498 * txgbe_probe - Device Initialization Routine 499 * @pdev: PCI device information struct 500 * @ent: entry in txgbe_pci_tbl 501 * 502 * Returns 0 on success, negative on failure 503 * 504 * txgbe_probe initializes an adapter identified by a pci_dev structure. 505 * The OS initialization, configuring of the wx private structure, 506 * and a hardware reset occur. 507 **/ 508 static int txgbe_probe(struct pci_dev *pdev, 509 const struct pci_device_id __always_unused *ent) 510 { 511 struct net_device *netdev; 512 int err, expected_gts; 513 struct wx *wx = NULL; 514 515 u16 eeprom_verh = 0, eeprom_verl = 0, offset = 0; 516 u16 eeprom_cfg_blkh = 0, eeprom_cfg_blkl = 0; 517 u16 build = 0, major = 0, patch = 0; 518 u8 part_str[TXGBE_PBANUM_LENGTH]; 519 u32 etrack_id = 0; 520 521 err = pci_enable_device_mem(pdev); 522 if (err) 523 return err; 524 525 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 526 if (err) { 527 dev_err(&pdev->dev, 528 "No usable DMA configuration, aborting\n"); 529 goto err_pci_disable_dev; 530 } 531 532 err = pci_request_selected_regions(pdev, 533 pci_select_bars(pdev, IORESOURCE_MEM), 534 txgbe_driver_name); 535 if (err) { 536 dev_err(&pdev->dev, 537 "pci_request_selected_regions failed 0x%x\n", err); 538 goto err_pci_disable_dev; 539 } 540 541 pci_enable_pcie_error_reporting(pdev); 542 pci_set_master(pdev); 543 544 netdev = devm_alloc_etherdev_mqs(&pdev->dev, 545 sizeof(struct wx), 546 TXGBE_MAX_TX_QUEUES, 547 TXGBE_MAX_RX_QUEUES); 548 if (!netdev) { 549 err = -ENOMEM; 550 goto err_pci_release_regions; 551 } 552 553 SET_NETDEV_DEV(netdev, &pdev->dev); 554 555 wx = netdev_priv(netdev); 556 wx->netdev = netdev; 557 wx->pdev = pdev; 558 559 wx->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; 560 561 wx->hw_addr = devm_ioremap(&pdev->dev, 562 pci_resource_start(pdev, 0), 563 pci_resource_len(pdev, 0)); 564 if (!wx->hw_addr) { 565 err = -EIO; 566 goto err_pci_release_regions; 567 } 568 569 wx->driver_name = txgbe_driver_name; 570 txgbe_set_ethtool_ops(netdev); 571 netdev->netdev_ops = &txgbe_netdev_ops; 572 573 /* setup the private structure */ 574 err = txgbe_sw_init(wx); 575 if (err) 576 goto err_free_mac_table; 577 578 /* check if flash load is done after hw power up */ 579 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PERST); 580 if (err) 581 goto err_free_mac_table; 582 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PWRRST); 583 if (err) 584 goto err_free_mac_table; 585 586 err = wx_mng_present(wx); 587 if (err) { 588 dev_err(&pdev->dev, "Management capability is not present\n"); 589 goto err_free_mac_table; 590 } 591 592 err = txgbe_reset_hw(wx); 593 if (err) { 594 dev_err(&pdev->dev, "HW Init failed: %d\n", err); 595 goto err_free_mac_table; 596 } 597 598 netdev->features |= NETIF_F_HIGHDMA; 599 netdev->features = NETIF_F_SG; 600 601 /* copy netdev features into list of user selectable features */ 602 netdev->hw_features |= netdev->features | NETIF_F_RXALL; 603 604 netdev->priv_flags |= IFF_UNICAST_FLT; 605 netdev->priv_flags |= IFF_SUPP_NOFCS; 606 607 netdev->min_mtu = ETH_MIN_MTU; 608 netdev->max_mtu = TXGBE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN); 609 610 /* make sure the EEPROM is good */ 611 err = txgbe_validate_eeprom_checksum(wx, NULL); 612 if (err != 0) { 613 dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); 614 wr32(wx, WX_MIS_RST, WX_MIS_RST_SW_RST); 615 err = -EIO; 616 goto err_free_mac_table; 617 } 618 619 eth_hw_addr_set(netdev, wx->mac.perm_addr); 620 wx_mac_set_default_filter(wx, wx->mac.perm_addr); 621 622 err = wx_init_interrupt_scheme(wx); 623 if (err) 624 goto err_free_mac_table; 625 626 /* Save off EEPROM version number and Option Rom version which 627 * together make a unique identify for the eeprom 628 */ 629 wx_read_ee_hostif(wx, 630 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_H, 631 &eeprom_verh); 632 wx_read_ee_hostif(wx, 633 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_L, 634 &eeprom_verl); 635 etrack_id = (eeprom_verh << 16) | eeprom_verl; 636 637 wx_read_ee_hostif(wx, 638 wx->eeprom.sw_region_offset + TXGBE_ISCSI_BOOT_CONFIG, 639 &offset); 640 641 /* Make sure offset to SCSI block is valid */ 642 if (!(offset == 0x0) && !(offset == 0xffff)) { 643 wx_read_ee_hostif(wx, offset + 0x84, &eeprom_cfg_blkh); 644 wx_read_ee_hostif(wx, offset + 0x83, &eeprom_cfg_blkl); 645 646 /* Only display Option Rom if exist */ 647 if (eeprom_cfg_blkl && eeprom_cfg_blkh) { 648 major = eeprom_cfg_blkl >> 8; 649 build = (eeprom_cfg_blkl << 8) | (eeprom_cfg_blkh >> 8); 650 patch = eeprom_cfg_blkh & 0x00ff; 651 652 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), 653 "0x%08x, %d.%d.%d", etrack_id, major, build, 654 patch); 655 } else { 656 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), 657 "0x%08x", etrack_id); 658 } 659 } else { 660 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), 661 "0x%08x", etrack_id); 662 } 663 664 err = register_netdev(netdev); 665 if (err) 666 goto err_release_hw; 667 668 pci_set_drvdata(pdev, wx); 669 670 netif_tx_stop_all_queues(netdev); 671 672 /* calculate the expected PCIe bandwidth required for optimal 673 * performance. Note that some older parts will never have enough 674 * bandwidth due to being older generation PCIe parts. We clamp these 675 * parts to ensure that no warning is displayed, as this could confuse 676 * users otherwise. 677 */ 678 expected_gts = txgbe_enumerate_functions(wx) * 10; 679 680 /* don't check link if we failed to enumerate functions */ 681 if (expected_gts > 0) 682 txgbe_check_minimum_link(wx); 683 else 684 dev_warn(&pdev->dev, "Failed to enumerate PF devices.\n"); 685 686 /* First try to read PBA as a string */ 687 err = txgbe_read_pba_string(wx, part_str, TXGBE_PBANUM_LENGTH); 688 if (err) 689 strncpy(part_str, "Unknown", TXGBE_PBANUM_LENGTH); 690 691 netif_info(wx, probe, netdev, "%pM\n", netdev->dev_addr); 692 693 return 0; 694 695 err_release_hw: 696 wx_clear_interrupt_scheme(wx); 697 wx_control_hw(wx, false); 698 err_free_mac_table: 699 kfree(wx->mac_table); 700 err_pci_release_regions: 701 pci_disable_pcie_error_reporting(pdev); 702 pci_release_selected_regions(pdev, 703 pci_select_bars(pdev, IORESOURCE_MEM)); 704 err_pci_disable_dev: 705 pci_disable_device(pdev); 706 return err; 707 } 708 709 /** 710 * txgbe_remove - Device Removal Routine 711 * @pdev: PCI device information struct 712 * 713 * txgbe_remove is called by the PCI subsystem to alert the driver 714 * that it should release a PCI device. The could be caused by a 715 * Hot-Plug event, or because the driver is going to be removed from 716 * memory. 717 **/ 718 static void txgbe_remove(struct pci_dev *pdev) 719 { 720 struct wx *wx = pci_get_drvdata(pdev); 721 struct net_device *netdev; 722 723 netdev = wx->netdev; 724 unregister_netdev(netdev); 725 726 pci_release_selected_regions(pdev, 727 pci_select_bars(pdev, IORESOURCE_MEM)); 728 729 kfree(wx->mac_table); 730 wx_clear_interrupt_scheme(wx); 731 732 pci_disable_pcie_error_reporting(pdev); 733 734 pci_disable_device(pdev); 735 } 736 737 static struct pci_driver txgbe_driver = { 738 .name = txgbe_driver_name, 739 .id_table = txgbe_pci_tbl, 740 .probe = txgbe_probe, 741 .remove = txgbe_remove, 742 .shutdown = txgbe_shutdown, 743 }; 744 745 module_pci_driver(txgbe_driver); 746 747 MODULE_DEVICE_TABLE(pci, txgbe_pci_tbl); 748 MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@trustnetic.com>"); 749 MODULE_DESCRIPTION("WangXun(R) 10 Gigabit PCI Express Network Driver"); 750 MODULE_LICENSE("GPL"); 751