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 22char 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 */ 32static 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 41static 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 **/ 58static 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 **/ 84static 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 **/ 99static 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 **/ 141static 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 168free_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 **/ 185static 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 206static 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 231static 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 248static 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 291static void txgbe_down(struct wx *wx) 292{ 293 struct txgbe *txgbe = netdev_to_txgbe(wx->netdev); 294 295 txgbe_disable_device(wx); 296 txgbe_reset(wx); 297 phylink_stop(txgbe->phylink); 298 299 wx_clean_all_tx_rings(wx); 300 wx_clean_all_rx_rings(wx); 301} 302 303/** 304 * txgbe_init_type_code - Initialize the shared code 305 * @wx: pointer to hardware structure 306 **/ 307static void txgbe_init_type_code(struct wx *wx) 308{ 309 u8 device_type = wx->subsystem_device_id & 0xF0; 310 311 switch (wx->device_id) { 312 case TXGBE_DEV_ID_SP1000: 313 case TXGBE_DEV_ID_WX1820: 314 wx->mac.type = wx_mac_sp; 315 break; 316 default: 317 wx->mac.type = wx_mac_unknown; 318 break; 319 } 320 321 switch (device_type) { 322 case TXGBE_ID_SFP: 323 wx->media_type = sp_media_fiber; 324 break; 325 case TXGBE_ID_XAUI: 326 case TXGBE_ID_SGMII: 327 wx->media_type = sp_media_copper; 328 break; 329 case TXGBE_ID_KR_KX_KX4: 330 case TXGBE_ID_MAC_XAUI: 331 case TXGBE_ID_MAC_SGMII: 332 wx->media_type = sp_media_backplane; 333 break; 334 case TXGBE_ID_SFI_XAUI: 335 if (wx->bus.func == 0) 336 wx->media_type = sp_media_fiber; 337 else 338 wx->media_type = sp_media_copper; 339 break; 340 default: 341 wx->media_type = sp_media_unknown; 342 break; 343 } 344} 345 346/** 347 * txgbe_sw_init - Initialize general software structures (struct wx) 348 * @wx: board private structure to initialize 349 **/ 350static int txgbe_sw_init(struct wx *wx) 351{ 352 u16 msix_count = 0; 353 int err; 354 355 wx->mac.num_rar_entries = TXGBE_SP_RAR_ENTRIES; 356 wx->mac.max_tx_queues = TXGBE_SP_MAX_TX_QUEUES; 357 wx->mac.max_rx_queues = TXGBE_SP_MAX_RX_QUEUES; 358 wx->mac.mcft_size = TXGBE_SP_MC_TBL_SIZE; 359 wx->mac.vft_size = TXGBE_SP_VFT_TBL_SIZE; 360 wx->mac.rx_pb_size = TXGBE_SP_RX_PB_SIZE; 361 wx->mac.tx_pb_size = TXGBE_SP_TDB_PB_SZ; 362 363 /* PCI config space info */ 364 err = wx_sw_init(wx); 365 if (err < 0) 366 return err; 367 368 txgbe_init_type_code(wx); 369 370 /* Set common capability flags and settings */ 371 wx->max_q_vectors = TXGBE_MAX_MSIX_VECTORS; 372 err = wx_get_pcie_msix_counts(wx, &msix_count, TXGBE_MAX_MSIX_VECTORS); 373 if (err) 374 wx_err(wx, "Do not support MSI-X\n"); 375 wx->mac.max_msix_vectors = msix_count; 376 377 /* enable itr by default in dynamic mode */ 378 wx->rx_itr_setting = 1; 379 wx->tx_itr_setting = 1; 380 381 /* set default ring sizes */ 382 wx->tx_ring_count = TXGBE_DEFAULT_TXD; 383 wx->rx_ring_count = TXGBE_DEFAULT_RXD; 384 385 /* set default work limits */ 386 wx->tx_work_limit = TXGBE_DEFAULT_TX_WORK; 387 wx->rx_work_limit = TXGBE_DEFAULT_RX_WORK; 388 389 return 0; 390} 391 392/** 393 * txgbe_open - Called when a network interface is made active 394 * @netdev: network interface device structure 395 * 396 * Returns 0 on success, negative value on failure 397 * 398 * The open entry point is called when a network interface is made 399 * active by the system (IFF_UP). 400 **/ 401static int txgbe_open(struct net_device *netdev) 402{ 403 struct wx *wx = netdev_priv(netdev); 404 int err; 405 406 err = wx_setup_resources(wx); 407 if (err) 408 goto err_reset; 409 410 wx_configure(wx); 411 412 err = txgbe_request_irq(wx); 413 if (err) 414 goto err_free_isb; 415 416 /* Notify the stack of the actual queue counts. */ 417 err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues); 418 if (err) 419 goto err_free_irq; 420 421 err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues); 422 if (err) 423 goto err_free_irq; 424 425 txgbe_up_complete(wx); 426 427 return 0; 428 429err_free_irq: 430 wx_free_irq(wx); 431err_free_isb: 432 wx_free_isb_resources(wx); 433err_reset: 434 txgbe_reset(wx); 435 436 return err; 437} 438 439/** 440 * txgbe_close_suspend - actions necessary to both suspend and close flows 441 * @wx: the private wx struct 442 * 443 * This function should contain the necessary work common to both suspending 444 * and closing of the device. 445 */ 446static void txgbe_close_suspend(struct wx *wx) 447{ 448 txgbe_disable_device(wx); 449 wx_free_resources(wx); 450} 451 452/** 453 * txgbe_close - Disables a network interface 454 * @netdev: network interface device structure 455 * 456 * Returns 0, this is not allowed to fail 457 * 458 * The close entry point is called when an interface is de-activated 459 * by the OS. The hardware is still under the drivers control, but 460 * needs to be disabled. A global MAC reset is issued to stop the 461 * hardware, and all transmit and receive resources are freed. 462 **/ 463static int txgbe_close(struct net_device *netdev) 464{ 465 struct wx *wx = netdev_priv(netdev); 466 467 txgbe_down(wx); 468 wx_free_irq(wx); 469 wx_free_resources(wx); 470 wx_control_hw(wx, false); 471 472 return 0; 473} 474 475static void txgbe_dev_shutdown(struct pci_dev *pdev) 476{ 477 struct wx *wx = pci_get_drvdata(pdev); 478 struct net_device *netdev; 479 480 netdev = wx->netdev; 481 netif_device_detach(netdev); 482 483 rtnl_lock(); 484 if (netif_running(netdev)) 485 txgbe_close_suspend(wx); 486 rtnl_unlock(); 487 488 wx_control_hw(wx, false); 489 490 pci_disable_device(pdev); 491} 492 493static void txgbe_shutdown(struct pci_dev *pdev) 494{ 495 txgbe_dev_shutdown(pdev); 496 497 if (system_state == SYSTEM_POWER_OFF) { 498 pci_wake_from_d3(pdev, false); 499 pci_set_power_state(pdev, PCI_D3hot); 500 } 501} 502 503static const struct net_device_ops txgbe_netdev_ops = { 504 .ndo_open = txgbe_open, 505 .ndo_stop = txgbe_close, 506 .ndo_change_mtu = wx_change_mtu, 507 .ndo_start_xmit = wx_xmit_frame, 508 .ndo_set_rx_mode = wx_set_rx_mode, 509 .ndo_set_features = wx_set_features, 510 .ndo_validate_addr = eth_validate_addr, 511 .ndo_set_mac_address = wx_set_mac, 512 .ndo_get_stats64 = wx_get_stats64, 513 .ndo_vlan_rx_add_vid = wx_vlan_rx_add_vid, 514 .ndo_vlan_rx_kill_vid = wx_vlan_rx_kill_vid, 515}; 516 517/** 518 * txgbe_probe - Device Initialization Routine 519 * @pdev: PCI device information struct 520 * @ent: entry in txgbe_pci_tbl 521 * 522 * Returns 0 on success, negative on failure 523 * 524 * txgbe_probe initializes an adapter identified by a pci_dev structure. 525 * The OS initialization, configuring of the wx private structure, 526 * and a hardware reset occur. 527 **/ 528static int txgbe_probe(struct pci_dev *pdev, 529 const struct pci_device_id __always_unused *ent) 530{ 531 struct net_device *netdev; 532 int err, expected_gts; 533 struct wx *wx = NULL; 534 struct txgbe *txgbe; 535 536 u16 eeprom_verh = 0, eeprom_verl = 0, offset = 0; 537 u16 eeprom_cfg_blkh = 0, eeprom_cfg_blkl = 0; 538 u16 build = 0, major = 0, patch = 0; 539 u8 part_str[TXGBE_PBANUM_LENGTH]; 540 u32 etrack_id = 0; 541 542 err = pci_enable_device_mem(pdev); 543 if (err) 544 return err; 545 546 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 547 if (err) { 548 dev_err(&pdev->dev, 549 "No usable DMA configuration, aborting\n"); 550 goto err_pci_disable_dev; 551 } 552 553 err = pci_request_selected_regions(pdev, 554 pci_select_bars(pdev, IORESOURCE_MEM), 555 txgbe_driver_name); 556 if (err) { 557 dev_err(&pdev->dev, 558 "pci_request_selected_regions failed 0x%x\n", err); 559 goto err_pci_disable_dev; 560 } 561 562 pci_set_master(pdev); 563 564 netdev = devm_alloc_etherdev_mqs(&pdev->dev, 565 sizeof(struct wx), 566 TXGBE_MAX_TX_QUEUES, 567 TXGBE_MAX_RX_QUEUES); 568 if (!netdev) { 569 err = -ENOMEM; 570 goto err_pci_release_regions; 571 } 572 573 SET_NETDEV_DEV(netdev, &pdev->dev); 574 575 wx = netdev_priv(netdev); 576 wx->netdev = netdev; 577 wx->pdev = pdev; 578 579 wx->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1; 580 581 wx->hw_addr = devm_ioremap(&pdev->dev, 582 pci_resource_start(pdev, 0), 583 pci_resource_len(pdev, 0)); 584 if (!wx->hw_addr) { 585 err = -EIO; 586 goto err_pci_release_regions; 587 } 588 589 wx->driver_name = txgbe_driver_name; 590 txgbe_set_ethtool_ops(netdev); 591 netdev->netdev_ops = &txgbe_netdev_ops; 592 593 /* setup the private structure */ 594 err = txgbe_sw_init(wx); 595 if (err) 596 goto err_free_mac_table; 597 598 /* check if flash load is done after hw power up */ 599 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PERST); 600 if (err) 601 goto err_free_mac_table; 602 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PWRRST); 603 if (err) 604 goto err_free_mac_table; 605 606 err = wx_mng_present(wx); 607 if (err) { 608 dev_err(&pdev->dev, "Management capability is not present\n"); 609 goto err_free_mac_table; 610 } 611 612 err = txgbe_reset_hw(wx); 613 if (err) { 614 dev_err(&pdev->dev, "HW Init failed: %d\n", err); 615 goto err_free_mac_table; 616 } 617 618 netdev->features = NETIF_F_SG | 619 NETIF_F_TSO | 620 NETIF_F_TSO6 | 621 NETIF_F_RXHASH | 622 NETIF_F_RXCSUM | 623 NETIF_F_HW_CSUM; 624 625 netdev->gso_partial_features = NETIF_F_GSO_ENCAP_ALL; 626 netdev->features |= netdev->gso_partial_features; 627 netdev->features |= NETIF_F_SCTP_CRC; 628 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID; 629 netdev->hw_enc_features |= netdev->vlan_features; 630 netdev->features |= NETIF_F_VLAN_FEATURES; 631 /* copy netdev features into list of user selectable features */ 632 netdev->hw_features |= netdev->features | NETIF_F_RXALL; 633 netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC; 634 netdev->features |= NETIF_F_HIGHDMA; 635 netdev->hw_features |= NETIF_F_GRO; 636 netdev->features |= NETIF_F_GRO; 637 638 netdev->priv_flags |= IFF_UNICAST_FLT; 639 netdev->priv_flags |= IFF_SUPP_NOFCS; 640 641 netdev->min_mtu = ETH_MIN_MTU; 642 netdev->max_mtu = WX_MAX_JUMBO_FRAME_SIZE - 643 (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); 644 645 /* make sure the EEPROM is good */ 646 err = txgbe_validate_eeprom_checksum(wx, NULL); 647 if (err != 0) { 648 dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); 649 wr32(wx, WX_MIS_RST, WX_MIS_RST_SW_RST); 650 err = -EIO; 651 goto err_free_mac_table; 652 } 653 654 eth_hw_addr_set(netdev, wx->mac.perm_addr); 655 wx_mac_set_default_filter(wx, wx->mac.perm_addr); 656 657 err = wx_init_interrupt_scheme(wx); 658 if (err) 659 goto err_free_mac_table; 660 661 /* Save off EEPROM version number and Option Rom version which 662 * together make a unique identify for the eeprom 663 */ 664 wx_read_ee_hostif(wx, 665 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_H, 666 &eeprom_verh); 667 wx_read_ee_hostif(wx, 668 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_L, 669 &eeprom_verl); 670 etrack_id = (eeprom_verh << 16) | eeprom_verl; 671 672 wx_read_ee_hostif(wx, 673 wx->eeprom.sw_region_offset + TXGBE_ISCSI_BOOT_CONFIG, 674 &offset); 675 676 /* Make sure offset to SCSI block is valid */ 677 if (!(offset == 0x0) && !(offset == 0xffff)) { 678 wx_read_ee_hostif(wx, offset + 0x84, &eeprom_cfg_blkh); 679 wx_read_ee_hostif(wx, offset + 0x83, &eeprom_cfg_blkl); 680 681 /* Only display Option Rom if exist */ 682 if (eeprom_cfg_blkl && eeprom_cfg_blkh) { 683 major = eeprom_cfg_blkl >> 8; 684 build = (eeprom_cfg_blkl << 8) | (eeprom_cfg_blkh >> 8); 685 patch = eeprom_cfg_blkh & 0x00ff; 686 687 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), 688 "0x%08x, %d.%d.%d", etrack_id, major, build, 689 patch); 690 } else { 691 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), 692 "0x%08x", etrack_id); 693 } 694 } else { 695 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), 696 "0x%08x", etrack_id); 697 } 698 699 if (etrack_id < 0x20010) 700 dev_warn(&pdev->dev, "Please upgrade the firmware to 0x20010 or above.\n"); 701 702 txgbe = devm_kzalloc(&pdev->dev, sizeof(*txgbe), GFP_KERNEL); 703 if (!txgbe) { 704 err = -ENOMEM; 705 goto err_release_hw; 706 } 707 708 txgbe->wx = wx; 709 wx->priv = txgbe; 710 711 err = txgbe_init_phy(txgbe); 712 if (err) 713 goto err_release_hw; 714 715 err = register_netdev(netdev); 716 if (err) 717 goto err_remove_phy; 718 719 pci_set_drvdata(pdev, wx); 720 721 netif_tx_stop_all_queues(netdev); 722 723 /* calculate the expected PCIe bandwidth required for optimal 724 * performance. Note that some older parts will never have enough 725 * bandwidth due to being older generation PCIe parts. We clamp these 726 * parts to ensure that no warning is displayed, as this could confuse 727 * users otherwise. 728 */ 729 expected_gts = txgbe_enumerate_functions(wx) * 10; 730 731 /* don't check link if we failed to enumerate functions */ 732 if (expected_gts > 0) 733 txgbe_check_minimum_link(wx); 734 else 735 dev_warn(&pdev->dev, "Failed to enumerate PF devices.\n"); 736 737 /* First try to read PBA as a string */ 738 err = txgbe_read_pba_string(wx, part_str, TXGBE_PBANUM_LENGTH); 739 if (err) 740 strncpy(part_str, "Unknown", TXGBE_PBANUM_LENGTH); 741 742 netif_info(wx, probe, netdev, "%pM\n", netdev->dev_addr); 743 744 return 0; 745 746err_remove_phy: 747 txgbe_remove_phy(txgbe); 748err_release_hw: 749 wx_clear_interrupt_scheme(wx); 750 wx_control_hw(wx, false); 751err_free_mac_table: 752 kfree(wx->mac_table); 753err_pci_release_regions: 754 pci_release_selected_regions(pdev, 755 pci_select_bars(pdev, IORESOURCE_MEM)); 756err_pci_disable_dev: 757 pci_disable_device(pdev); 758 return err; 759} 760 761/** 762 * txgbe_remove - Device Removal Routine 763 * @pdev: PCI device information struct 764 * 765 * txgbe_remove is called by the PCI subsystem to alert the driver 766 * that it should release a PCI device. The could be caused by a 767 * Hot-Plug event, or because the driver is going to be removed from 768 * memory. 769 **/ 770static void txgbe_remove(struct pci_dev *pdev) 771{ 772 struct wx *wx = pci_get_drvdata(pdev); 773 struct txgbe *txgbe = wx->priv; 774 struct net_device *netdev; 775 776 netdev = wx->netdev; 777 unregister_netdev(netdev); 778 779 txgbe_remove_phy(txgbe); 780 781 pci_release_selected_regions(pdev, 782 pci_select_bars(pdev, IORESOURCE_MEM)); 783 784 kfree(wx->mac_table); 785 wx_clear_interrupt_scheme(wx); 786 787 pci_disable_device(pdev); 788} 789 790static struct pci_driver txgbe_driver = { 791 .name = txgbe_driver_name, 792 .id_table = txgbe_pci_tbl, 793 .probe = txgbe_probe, 794 .remove = txgbe_remove, 795 .shutdown = txgbe_shutdown, 796}; 797 798module_pci_driver(txgbe_driver); 799 800MODULE_DEVICE_TABLE(pci, txgbe_pci_tbl); 801MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@trustnetic.com>"); 802MODULE_DESCRIPTION("WangXun(R) 10 Gigabit PCI Express Network Driver"); 803MODULE_LICENSE("GPL"); 804