1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2019 - 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 #include <linux/phy.h> 13 14 #include "../libwx/wx_type.h" 15 #include "../libwx/wx_hw.h" 16 #include "../libwx/wx_lib.h" 17 #include "ngbe_type.h" 18 #include "ngbe_mdio.h" 19 #include "ngbe_hw.h" 20 21 char ngbe_driver_name[] = "ngbe"; 22 23 /* ngbe_pci_tbl - PCI Device ID Table 24 * 25 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 26 * Class, Class Mask, private data (not used) } 27 */ 28 static const struct pci_device_id ngbe_pci_tbl[] = { 29 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL_W), 0}, 30 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A2), 0}, 31 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A2S), 0}, 32 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A4), 0}, 33 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A4S), 0}, 34 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL2), 0}, 35 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL2S), 0}, 36 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL4), 0}, 37 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL4S), 0}, 38 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860LC), 0}, 39 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A1), 0}, 40 { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A1L), 0}, 41 /* required last entry */ 42 { .device = 0 } 43 }; 44 45 /** 46 * ngbe_init_type_code - Initialize the shared code 47 * @wx: pointer to hardware structure 48 **/ 49 static void ngbe_init_type_code(struct wx *wx) 50 { 51 int wol_mask = 0, ncsi_mask = 0; 52 u16 type_mask = 0, val; 53 54 wx->mac.type = wx_mac_em; 55 type_mask = (u16)(wx->subsystem_device_id & NGBE_OEM_MASK); 56 ncsi_mask = wx->subsystem_device_id & NGBE_NCSI_MASK; 57 wol_mask = wx->subsystem_device_id & NGBE_WOL_MASK; 58 59 val = rd32(wx, WX_CFG_PORT_ST); 60 wx->mac_type = (val & BIT(7)) >> 7 ? 61 em_mac_type_rgmii : 62 em_mac_type_mdi; 63 64 wx->wol_enabled = (wol_mask == NGBE_WOL_SUP) ? 1 : 0; 65 wx->ncsi_enabled = (ncsi_mask == NGBE_NCSI_MASK || 66 type_mask == NGBE_SUBID_OCP_CARD) ? 1 : 0; 67 68 switch (type_mask) { 69 case NGBE_SUBID_LY_YT8521S_SFP: 70 case NGBE_SUBID_LY_M88E1512_SFP: 71 case NGBE_SUBID_YT8521S_SFP_GPIO: 72 case NGBE_SUBID_INTERNAL_YT8521S_SFP_GPIO: 73 wx->gpio_ctrl = 1; 74 break; 75 default: 76 wx->gpio_ctrl = 0; 77 break; 78 } 79 } 80 81 /** 82 * ngbe_init_rss_key - Initialize wx RSS key 83 * @wx: device handle 84 * 85 * Allocates and initializes the RSS key if it is not allocated. 86 **/ 87 static inline int ngbe_init_rss_key(struct wx *wx) 88 { 89 u32 *rss_key; 90 91 if (!wx->rss_key) { 92 rss_key = kzalloc(WX_RSS_KEY_SIZE, GFP_KERNEL); 93 if (unlikely(!rss_key)) 94 return -ENOMEM; 95 96 netdev_rss_key_fill(rss_key, WX_RSS_KEY_SIZE); 97 wx->rss_key = rss_key; 98 } 99 100 return 0; 101 } 102 103 /** 104 * ngbe_sw_init - Initialize general software structures 105 * @wx: board private structure to initialize 106 **/ 107 static int ngbe_sw_init(struct wx *wx) 108 { 109 struct pci_dev *pdev = wx->pdev; 110 u16 msix_count = 0; 111 int err = 0; 112 113 wx->mac.num_rar_entries = NGBE_RAR_ENTRIES; 114 wx->mac.max_rx_queues = NGBE_MAX_RX_QUEUES; 115 wx->mac.max_tx_queues = NGBE_MAX_TX_QUEUES; 116 wx->mac.mcft_size = NGBE_MC_TBL_SIZE; 117 wx->mac.rx_pb_size = NGBE_RX_PB_SIZE; 118 wx->mac.tx_pb_size = NGBE_TDB_PB_SZ; 119 120 /* PCI config space info */ 121 err = wx_sw_init(wx); 122 if (err < 0) { 123 wx_err(wx, "read of internal subsystem device id failed\n"); 124 return err; 125 } 126 127 /* mac type, phy type , oem type */ 128 ngbe_init_type_code(wx); 129 130 /* Set common capability flags and settings */ 131 wx->max_q_vectors = NGBE_MAX_MSIX_VECTORS; 132 err = wx_get_pcie_msix_counts(wx, &msix_count, NGBE_MAX_MSIX_VECTORS); 133 if (err) 134 dev_err(&pdev->dev, "Do not support MSI-X\n"); 135 wx->mac.max_msix_vectors = msix_count; 136 137 if (ngbe_init_rss_key(wx)) 138 return -ENOMEM; 139 140 /* enable itr by default in dynamic mode */ 141 wx->rx_itr_setting = 1; 142 wx->tx_itr_setting = 1; 143 144 /* set default ring sizes */ 145 wx->tx_ring_count = NGBE_DEFAULT_TXD; 146 wx->rx_ring_count = NGBE_DEFAULT_RXD; 147 148 /* set default work limits */ 149 wx->tx_work_limit = NGBE_DEFAULT_TX_WORK; 150 wx->rx_work_limit = NGBE_DEFAULT_RX_WORK; 151 152 return 0; 153 } 154 155 /** 156 * ngbe_irq_enable - Enable default interrupt generation settings 157 * @wx: board private structure 158 * @queues: enable all queues interrupts 159 **/ 160 static void ngbe_irq_enable(struct wx *wx, bool queues) 161 { 162 u32 mask; 163 164 /* enable misc interrupt */ 165 mask = NGBE_PX_MISC_IEN_MASK; 166 167 wr32(wx, WX_GPIO_DDR, WX_GPIO_DDR_0); 168 wr32(wx, WX_GPIO_INTEN, WX_GPIO_INTEN_0 | WX_GPIO_INTEN_1); 169 wr32(wx, WX_GPIO_INTTYPE_LEVEL, 0x0); 170 wr32(wx, WX_GPIO_POLARITY, wx->gpio_ctrl ? 0 : 0x3); 171 172 wr32(wx, WX_PX_MISC_IEN, mask); 173 174 /* mask interrupt */ 175 if (queues) 176 wx_intr_enable(wx, NGBE_INTR_ALL); 177 else 178 wx_intr_enable(wx, NGBE_INTR_MISC(wx)); 179 } 180 181 /** 182 * ngbe_intr - msi/legacy mode Interrupt Handler 183 * @irq: interrupt number 184 * @data: pointer to a network interface device structure 185 **/ 186 static irqreturn_t ngbe_intr(int __always_unused irq, void *data) 187 { 188 struct wx_q_vector *q_vector; 189 struct wx *wx = data; 190 struct pci_dev *pdev; 191 u32 eicr; 192 193 q_vector = wx->q_vector[0]; 194 pdev = wx->pdev; 195 196 eicr = wx_misc_isb(wx, WX_ISB_VEC0); 197 if (!eicr) { 198 /* shared interrupt alert! 199 * the interrupt that we masked before the EICR read. 200 */ 201 if (netif_running(wx->netdev)) 202 ngbe_irq_enable(wx, true); 203 return IRQ_NONE; /* Not our interrupt */ 204 } 205 wx->isb_mem[WX_ISB_VEC0] = 0; 206 if (!(pdev->msi_enabled)) 207 wr32(wx, WX_PX_INTA, 1); 208 209 wx->isb_mem[WX_ISB_MISC] = 0; 210 /* would disable interrupts here but it is auto disabled */ 211 napi_schedule_irqoff(&q_vector->napi); 212 213 if (netif_running(wx->netdev)) 214 ngbe_irq_enable(wx, false); 215 216 return IRQ_HANDLED; 217 } 218 219 static irqreturn_t ngbe_msix_other(int __always_unused irq, void *data) 220 { 221 struct wx *wx = data; 222 223 /* re-enable the original interrupt state, no lsc, no queues */ 224 if (netif_running(wx->netdev)) 225 ngbe_irq_enable(wx, false); 226 227 return IRQ_HANDLED; 228 } 229 230 /** 231 * ngbe_request_msix_irqs - Initialize MSI-X interrupts 232 * @wx: board private structure 233 * 234 * ngbe_request_msix_irqs allocates MSI-X vectors and requests 235 * interrupts from the kernel. 236 **/ 237 static int ngbe_request_msix_irqs(struct wx *wx) 238 { 239 struct net_device *netdev = wx->netdev; 240 int vector, err; 241 242 for (vector = 0; vector < wx->num_q_vectors; vector++) { 243 struct wx_q_vector *q_vector = wx->q_vector[vector]; 244 struct msix_entry *entry = &wx->msix_entries[vector]; 245 246 if (q_vector->tx.ring && q_vector->rx.ring) 247 snprintf(q_vector->name, sizeof(q_vector->name) - 1, 248 "%s-TxRx-%d", netdev->name, entry->entry); 249 else 250 /* skip this unused q_vector */ 251 continue; 252 253 err = request_irq(entry->vector, wx_msix_clean_rings, 0, 254 q_vector->name, q_vector); 255 if (err) { 256 wx_err(wx, "request_irq failed for MSIX interrupt %s Error: %d\n", 257 q_vector->name, err); 258 goto free_queue_irqs; 259 } 260 } 261 262 err = request_irq(wx->msix_entries[vector].vector, 263 ngbe_msix_other, 0, netdev->name, wx); 264 265 if (err) { 266 wx_err(wx, "request_irq for msix_other failed: %d\n", err); 267 goto free_queue_irqs; 268 } 269 270 return 0; 271 272 free_queue_irqs: 273 while (vector) { 274 vector--; 275 free_irq(wx->msix_entries[vector].vector, 276 wx->q_vector[vector]); 277 } 278 wx_reset_interrupt_capability(wx); 279 return err; 280 } 281 282 /** 283 * ngbe_request_irq - initialize interrupts 284 * @wx: board private structure 285 * 286 * Attempts to configure interrupts using the best available 287 * capabilities of the hardware and kernel. 288 **/ 289 static int ngbe_request_irq(struct wx *wx) 290 { 291 struct net_device *netdev = wx->netdev; 292 struct pci_dev *pdev = wx->pdev; 293 int err; 294 295 if (pdev->msix_enabled) 296 err = ngbe_request_msix_irqs(wx); 297 else if (pdev->msi_enabled) 298 err = request_irq(pdev->irq, ngbe_intr, 0, 299 netdev->name, wx); 300 else 301 err = request_irq(pdev->irq, ngbe_intr, IRQF_SHARED, 302 netdev->name, wx); 303 304 if (err) 305 wx_err(wx, "request_irq failed, Error %d\n", err); 306 307 return err; 308 } 309 310 static void ngbe_disable_device(struct wx *wx) 311 { 312 struct net_device *netdev = wx->netdev; 313 u32 i; 314 315 /* disable all enabled rx queues */ 316 for (i = 0; i < wx->num_rx_queues; i++) 317 /* this call also flushes the previous write */ 318 wx_disable_rx_queue(wx, wx->rx_ring[i]); 319 /* disable receives */ 320 wx_disable_rx(wx); 321 wx_napi_disable_all(wx); 322 netif_tx_stop_all_queues(netdev); 323 netif_tx_disable(netdev); 324 if (wx->gpio_ctrl) 325 ngbe_sfp_modules_txrx_powerctl(wx, false); 326 wx_irq_disable(wx); 327 /* disable transmits in the hardware now that interrupts are off */ 328 for (i = 0; i < wx->num_tx_queues; i++) { 329 u8 reg_idx = wx->tx_ring[i]->reg_idx; 330 331 wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH); 332 } 333 } 334 335 static void ngbe_down(struct wx *wx) 336 { 337 phy_stop(wx->phydev); 338 ngbe_disable_device(wx); 339 wx_clean_all_tx_rings(wx); 340 wx_clean_all_rx_rings(wx); 341 } 342 343 static void ngbe_up(struct wx *wx) 344 { 345 wx_configure_vectors(wx); 346 347 /* make sure to complete pre-operations */ 348 smp_mb__before_atomic(); 349 wx_napi_enable_all(wx); 350 /* enable transmits */ 351 netif_tx_start_all_queues(wx->netdev); 352 353 /* clear any pending interrupts, may auto mask */ 354 rd32(wx, WX_PX_IC); 355 rd32(wx, WX_PX_MISC_IC); 356 ngbe_irq_enable(wx, true); 357 if (wx->gpio_ctrl) 358 ngbe_sfp_modules_txrx_powerctl(wx, true); 359 360 phy_start(wx->phydev); 361 } 362 363 /** 364 * ngbe_open - Called when a network interface is made active 365 * @netdev: network interface device structure 366 * 367 * Returns 0 on success, negative value on failure 368 * 369 * The open entry point is called when a network interface is made 370 * active by the system (IFF_UP). 371 **/ 372 static int ngbe_open(struct net_device *netdev) 373 { 374 struct wx *wx = netdev_priv(netdev); 375 int err; 376 377 wx_control_hw(wx, true); 378 379 err = wx_setup_resources(wx); 380 if (err) 381 return err; 382 383 wx_configure(wx); 384 385 err = ngbe_request_irq(wx); 386 if (err) 387 goto err_free_resources; 388 389 err = ngbe_phy_connect(wx); 390 if (err) 391 goto err_free_irq; 392 393 err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues); 394 if (err) 395 goto err_dis_phy; 396 397 err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues); 398 if (err) 399 goto err_dis_phy; 400 401 ngbe_up(wx); 402 403 return 0; 404 err_dis_phy: 405 phy_disconnect(wx->phydev); 406 err_free_irq: 407 wx_free_irq(wx); 408 err_free_resources: 409 wx_free_resources(wx); 410 return err; 411 } 412 413 /** 414 * ngbe_close - Disables a network interface 415 * @netdev: network interface device structure 416 * 417 * Returns 0, this is not allowed to fail 418 * 419 * The close entry point is called when an interface is de-activated 420 * by the OS. The hardware is still under the drivers control, but 421 * needs to be disabled. A global MAC reset is issued to stop the 422 * hardware, and all transmit and receive resources are freed. 423 **/ 424 static int ngbe_close(struct net_device *netdev) 425 { 426 struct wx *wx = netdev_priv(netdev); 427 428 ngbe_down(wx); 429 wx_free_irq(wx); 430 wx_free_resources(wx); 431 phy_disconnect(wx->phydev); 432 wx_control_hw(wx, false); 433 434 return 0; 435 } 436 437 static void ngbe_dev_shutdown(struct pci_dev *pdev, bool *enable_wake) 438 { 439 struct wx *wx = pci_get_drvdata(pdev); 440 struct net_device *netdev; 441 442 netdev = wx->netdev; 443 netif_device_detach(netdev); 444 445 rtnl_lock(); 446 if (netif_running(netdev)) 447 ngbe_down(wx); 448 rtnl_unlock(); 449 wx_control_hw(wx, false); 450 451 pci_disable_device(pdev); 452 } 453 454 static void ngbe_shutdown(struct pci_dev *pdev) 455 { 456 struct wx *wx = pci_get_drvdata(pdev); 457 bool wake; 458 459 wake = !!wx->wol; 460 461 ngbe_dev_shutdown(pdev, &wake); 462 463 if (system_state == SYSTEM_POWER_OFF) { 464 pci_wake_from_d3(pdev, wake); 465 pci_set_power_state(pdev, PCI_D3hot); 466 } 467 } 468 469 static const struct net_device_ops ngbe_netdev_ops = { 470 .ndo_open = ngbe_open, 471 .ndo_stop = ngbe_close, 472 .ndo_start_xmit = wx_xmit_frame, 473 .ndo_set_rx_mode = wx_set_rx_mode, 474 .ndo_validate_addr = eth_validate_addr, 475 .ndo_set_mac_address = wx_set_mac, 476 .ndo_get_stats64 = wx_get_stats64, 477 }; 478 479 /** 480 * ngbe_probe - Device Initialization Routine 481 * @pdev: PCI device information struct 482 * @ent: entry in ngbe_pci_tbl 483 * 484 * Returns 0 on success, negative on failure 485 * 486 * ngbe_probe initializes an wx identified by a pci_dev structure. 487 * The OS initialization, configuring of the wx private structure, 488 * and a hardware reset occur. 489 **/ 490 static int ngbe_probe(struct pci_dev *pdev, 491 const struct pci_device_id __always_unused *ent) 492 { 493 struct net_device *netdev; 494 u32 e2rom_cksum_cap = 0; 495 struct wx *wx = NULL; 496 static int func_nums; 497 u16 e2rom_ver = 0; 498 u32 etrack_id = 0; 499 u32 saved_ver = 0; 500 int err; 501 502 err = pci_enable_device_mem(pdev); 503 if (err) 504 return err; 505 506 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 507 if (err) { 508 dev_err(&pdev->dev, 509 "No usable DMA configuration, aborting\n"); 510 goto err_pci_disable_dev; 511 } 512 513 err = pci_request_selected_regions(pdev, 514 pci_select_bars(pdev, IORESOURCE_MEM), 515 ngbe_driver_name); 516 if (err) { 517 dev_err(&pdev->dev, 518 "pci_request_selected_regions failed %d\n", err); 519 goto err_pci_disable_dev; 520 } 521 522 pci_enable_pcie_error_reporting(pdev); 523 pci_set_master(pdev); 524 525 netdev = devm_alloc_etherdev_mqs(&pdev->dev, 526 sizeof(struct wx), 527 NGBE_MAX_TX_QUEUES, 528 NGBE_MAX_RX_QUEUES); 529 if (!netdev) { 530 err = -ENOMEM; 531 goto err_pci_release_regions; 532 } 533 534 SET_NETDEV_DEV(netdev, &pdev->dev); 535 536 wx = netdev_priv(netdev); 537 wx->netdev = netdev; 538 wx->pdev = pdev; 539 wx->msg_enable = BIT(3) - 1; 540 541 wx->hw_addr = devm_ioremap(&pdev->dev, 542 pci_resource_start(pdev, 0), 543 pci_resource_len(pdev, 0)); 544 if (!wx->hw_addr) { 545 err = -EIO; 546 goto err_pci_release_regions; 547 } 548 549 netdev->netdev_ops = &ngbe_netdev_ops; 550 551 netdev->features |= NETIF_F_HIGHDMA; 552 netdev->features = NETIF_F_SG; 553 554 /* copy netdev features into list of user selectable features */ 555 netdev->hw_features |= netdev->features | 556 NETIF_F_RXALL; 557 558 netdev->priv_flags |= IFF_UNICAST_FLT; 559 netdev->priv_flags |= IFF_SUPP_NOFCS; 560 561 netdev->min_mtu = ETH_MIN_MTU; 562 netdev->max_mtu = NGBE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN); 563 564 wx->bd_number = func_nums; 565 /* setup the private structure */ 566 err = ngbe_sw_init(wx); 567 if (err) 568 goto err_free_mac_table; 569 570 /* check if flash load is done after hw power up */ 571 err = wx_check_flash_load(wx, NGBE_SPI_ILDR_STATUS_PERST); 572 if (err) 573 goto err_free_mac_table; 574 err = wx_check_flash_load(wx, NGBE_SPI_ILDR_STATUS_PWRRST); 575 if (err) 576 goto err_free_mac_table; 577 578 err = wx_mng_present(wx); 579 if (err) { 580 dev_err(&pdev->dev, "Management capability is not present\n"); 581 goto err_free_mac_table; 582 } 583 584 err = ngbe_reset_hw(wx); 585 if (err) { 586 dev_err(&pdev->dev, "HW Init failed: %d\n", err); 587 goto err_free_mac_table; 588 } 589 590 if (wx->bus.func == 0) { 591 wr32(wx, NGBE_CALSUM_CAP_STATUS, 0x0); 592 wr32(wx, NGBE_EEPROM_VERSION_STORE_REG, 0x0); 593 } else { 594 e2rom_cksum_cap = rd32(wx, NGBE_CALSUM_CAP_STATUS); 595 saved_ver = rd32(wx, NGBE_EEPROM_VERSION_STORE_REG); 596 } 597 598 wx_init_eeprom_params(wx); 599 if (wx->bus.func == 0 || e2rom_cksum_cap == 0) { 600 /* make sure the EEPROM is ready */ 601 err = ngbe_eeprom_chksum_hostif(wx); 602 if (err) { 603 dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); 604 err = -EIO; 605 goto err_free_mac_table; 606 } 607 } 608 609 wx->wol = 0; 610 if (wx->wol_enabled) 611 wx->wol = NGBE_PSR_WKUP_CTL_MAG; 612 613 wx->wol_enabled = !!(wx->wol); 614 wr32(wx, NGBE_PSR_WKUP_CTL, wx->wol); 615 616 device_set_wakeup_enable(&pdev->dev, wx->wol); 617 618 /* Save off EEPROM version number and Option Rom version which 619 * together make a unique identify for the eeprom 620 */ 621 if (saved_ver) { 622 etrack_id = saved_ver; 623 } else { 624 wx_read_ee_hostif(wx, 625 wx->eeprom.sw_region_offset + NGBE_EEPROM_VERSION_H, 626 &e2rom_ver); 627 etrack_id = e2rom_ver << 16; 628 wx_read_ee_hostif(wx, 629 wx->eeprom.sw_region_offset + NGBE_EEPROM_VERSION_L, 630 &e2rom_ver); 631 etrack_id |= e2rom_ver; 632 wr32(wx, NGBE_EEPROM_VERSION_STORE_REG, etrack_id); 633 } 634 635 eth_hw_addr_set(netdev, wx->mac.perm_addr); 636 wx_mac_set_default_filter(wx, wx->mac.perm_addr); 637 638 err = wx_init_interrupt_scheme(wx); 639 if (err) 640 goto err_free_mac_table; 641 642 /* phy Interface Configuration */ 643 err = ngbe_mdio_init(wx); 644 if (err) 645 goto err_clear_interrupt_scheme; 646 647 err = register_netdev(netdev); 648 if (err) 649 goto err_register; 650 651 pci_set_drvdata(pdev, wx); 652 653 netif_info(wx, probe, netdev, 654 "PHY: %s, PBA No: Wang Xun GbE Family Controller\n", 655 wx->mac_type == em_mac_type_mdi ? "Internal" : "External"); 656 netif_info(wx, probe, netdev, "%pM\n", netdev->dev_addr); 657 658 return 0; 659 660 err_register: 661 wx_control_hw(wx, false); 662 err_clear_interrupt_scheme: 663 wx_clear_interrupt_scheme(wx); 664 err_free_mac_table: 665 kfree(wx->mac_table); 666 err_pci_release_regions: 667 pci_disable_pcie_error_reporting(pdev); 668 pci_release_selected_regions(pdev, 669 pci_select_bars(pdev, IORESOURCE_MEM)); 670 err_pci_disable_dev: 671 pci_disable_device(pdev); 672 return err; 673 } 674 675 /** 676 * ngbe_remove - Device Removal Routine 677 * @pdev: PCI device information struct 678 * 679 * ngbe_remove is called by the PCI subsystem to alert the driver 680 * that it should release a PCI device. The could be caused by a 681 * Hot-Plug event, or because the driver is going to be removed from 682 * memory. 683 **/ 684 static void ngbe_remove(struct pci_dev *pdev) 685 { 686 struct wx *wx = pci_get_drvdata(pdev); 687 struct net_device *netdev; 688 689 netdev = wx->netdev; 690 unregister_netdev(netdev); 691 pci_release_selected_regions(pdev, 692 pci_select_bars(pdev, IORESOURCE_MEM)); 693 694 kfree(wx->mac_table); 695 wx_clear_interrupt_scheme(wx); 696 pci_disable_pcie_error_reporting(pdev); 697 698 pci_disable_device(pdev); 699 } 700 701 static struct pci_driver ngbe_driver = { 702 .name = ngbe_driver_name, 703 .id_table = ngbe_pci_tbl, 704 .probe = ngbe_probe, 705 .remove = ngbe_remove, 706 .shutdown = ngbe_shutdown, 707 }; 708 709 module_pci_driver(ngbe_driver); 710 711 MODULE_DEVICE_TABLE(pci, ngbe_pci_tbl); 712 MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@net-swift.com>"); 713 MODULE_DESCRIPTION("WangXun(R) Gigabit PCI Express Network Driver"); 714 MODULE_LICENSE("GPL"); 715