drivers/net/ethernet/wangxun/ngbe/ngbe_main.c

   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/etherdevice.h>
  10 #include <net/ip.h>
  11 #include <linux/phy.h>
  12 #include <linux/if_vlan.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 #include "ngbe_ethtool.h"
  21
  22 char ngbe_driver_name[] = "ngbe";
  23
  24 /* ngbe_pci_tbl - PCI Device ID Table
  25  *
  26  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  27  *   Class, Class Mask, private data (not used) }
  28  */
  29 static const struct pci_device_id ngbe_pci_tbl[] = {
  30         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL_W), 0},
  31         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A2), 0},
  32         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A2S), 0},
  33         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A4), 0},
  34         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A4S), 0},
  35         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL2), 0},
  36         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL2S), 0},
  37         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL4), 0},
  38         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL4S), 0},
  39         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860LC), 0},
  40         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A1), 0},
  41         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A1L), 0},
  42         /* required last entry */
  43         { .device = 0 }
  44 };
  45
  46 /**
  47  *  ngbe_init_type_code - Initialize the shared code
  48  *  @wx: pointer to hardware structure
  49  **/
  50 static void ngbe_init_type_code(struct wx *wx)
  51 {
  52         int wol_mask = 0, ncsi_mask = 0;
  53         u16 type_mask = 0, val;
  54
  55         wx->mac.type = wx_mac_em;
  56         type_mask = (u16)(wx->subsystem_device_id & NGBE_OEM_MASK);
  57         ncsi_mask = wx->subsystem_device_id & NGBE_NCSI_MASK;
  58         wol_mask = wx->subsystem_device_id & NGBE_WOL_MASK;
  59
  60         val = rd32(wx, WX_CFG_PORT_ST);
  61         wx->mac_type = (val & BIT(7)) >> 7 ?
  62                        em_mac_type_rgmii :
  63                        em_mac_type_mdi;
  64
  65         wx->wol_hw_supported = (wol_mask == NGBE_WOL_SUP) ? 1 : 0;
  66         wx->ncsi_enabled = (ncsi_mask == NGBE_NCSI_MASK ||
  67                            type_mask == NGBE_SUBID_OCP_CARD) ? 1 : 0;
  68
  69         switch (type_mask) {
  70         case NGBE_SUBID_LY_YT8521S_SFP:
  71         case NGBE_SUBID_LY_M88E1512_SFP:
  72         case NGBE_SUBID_YT8521S_SFP_GPIO:
  73         case NGBE_SUBID_INTERNAL_YT8521S_SFP_GPIO:
  74                 wx->gpio_ctrl = 1;
  75                 break;
  76         default:
  77                 wx->gpio_ctrl = 0;
  78                 break;
  79         }
  80 }
  81
  82 /**
  83  * ngbe_init_rss_key - Initialize wx RSS key
  84  * @wx: device handle
  85  *
  86  * Allocates and initializes the RSS key if it is not allocated.
  87  **/
  88 static inline int ngbe_init_rss_key(struct wx *wx)
  89 {
  90         u32 *rss_key;
  91
  92         if (!wx->rss_key) {
  93                 rss_key = kzalloc(WX_RSS_KEY_SIZE, GFP_KERNEL);
  94                 if (unlikely(!rss_key))
  95                         return -ENOMEM;
  96
  97                 netdev_rss_key_fill(rss_key, WX_RSS_KEY_SIZE);
  98                 wx->rss_key = rss_key;
  99         }
 100
 101         return 0;
 102 }
 103
 104 /**
 105  * ngbe_sw_init - Initialize general software structures
 106  * @wx: board private structure to initialize
 107  **/
 108 static int ngbe_sw_init(struct wx *wx)
 109 {
 110         struct pci_dev *pdev = wx->pdev;
 111         u16 msix_count = 0;
 112         int err = 0;
 113
 114         wx->mac.num_rar_entries = NGBE_RAR_ENTRIES;
 115         wx->mac.max_rx_queues = NGBE_MAX_RX_QUEUES;
 116         wx->mac.max_tx_queues = NGBE_MAX_TX_QUEUES;
 117         wx->mac.mcft_size = NGBE_MC_TBL_SIZE;
 118         wx->mac.vft_size = NGBE_SP_VFT_TBL_SIZE;
 119         wx->mac.rx_pb_size = NGBE_RX_PB_SIZE;
 120         wx->mac.tx_pb_size = NGBE_TDB_PB_SZ;
 121
 122         /* PCI config space info */
 123         err = wx_sw_init(wx);
 124         if (err < 0) {
 125                 wx_err(wx, "read of internal subsystem device id failed\n");
 126                 return err;
 127         }
 128
 129         /* mac type, phy type , oem type */
 130         ngbe_init_type_code(wx);
 131
 132         /* Set common capability flags and settings */
 133         wx->max_q_vectors = NGBE_MAX_MSIX_VECTORS;
 134         err = wx_get_pcie_msix_counts(wx, &msix_count, NGBE_MAX_MSIX_VECTORS);
 135         if (err)
 136                 dev_err(&pdev->dev, "Do not support MSI-X\n");
 137         wx->mac.max_msix_vectors = msix_count;
 138
 139         if (ngbe_init_rss_key(wx))
 140                 return -ENOMEM;
 141
 142         /* enable itr by default in dynamic mode */
 143         wx->rx_itr_setting = 1;
 144         wx->tx_itr_setting = 1;
 145
 146         /* set default ring sizes */
 147         wx->tx_ring_count = NGBE_DEFAULT_TXD;
 148         wx->rx_ring_count = NGBE_DEFAULT_RXD;
 149
 150         /* set default work limits */
 151         wx->tx_work_limit = NGBE_DEFAULT_TX_WORK;
 152         wx->rx_work_limit = NGBE_DEFAULT_RX_WORK;
 153
 154         return 0;
 155 }
 156
 157 /**
 158  * ngbe_irq_enable - Enable default interrupt generation settings
 159  * @wx: board private structure
 160  * @queues: enable all queues interrupts
 161  **/
 162 static void ngbe_irq_enable(struct wx *wx, bool queues)
 163 {
 164         u32 mask;
 165
 166         /* enable misc interrupt */
 167         mask = NGBE_PX_MISC_IEN_MASK;
 168
 169         wr32(wx, WX_GPIO_DDR, WX_GPIO_DDR_0);
 170         wr32(wx, WX_GPIO_INTEN, WX_GPIO_INTEN_0 | WX_GPIO_INTEN_1);
 171         wr32(wx, WX_GPIO_INTTYPE_LEVEL, 0x0);
 172         wr32(wx, WX_GPIO_POLARITY, wx->gpio_ctrl ? 0 : 0x3);
 173
 174         wr32(wx, WX_PX_MISC_IEN, mask);
 175
 176         /* mask interrupt */
 177         if (queues)
 178                 wx_intr_enable(wx, NGBE_INTR_ALL);
 179         else
 180                 wx_intr_enable(wx, NGBE_INTR_MISC(wx));
 181 }
 182
 183 /**
 184  * ngbe_intr - msi/legacy mode Interrupt Handler
 185  * @irq: interrupt number
 186  * @data: pointer to a network interface device structure
 187  **/
 188 static irqreturn_t ngbe_intr(int __always_unused irq, void *data)
 189 {
 190         struct wx_q_vector *q_vector;
 191         struct wx *wx  = data;
 192         struct pci_dev *pdev;
 193         u32 eicr;
 194
 195         q_vector = wx->q_vector[0];
 196         pdev = wx->pdev;
 197
 198         eicr = wx_misc_isb(wx, WX_ISB_VEC0);
 199         if (!eicr) {
 200                 /* shared interrupt alert!
 201                  * the interrupt that we masked before the EICR read.
 202                  */
 203                 if (netif_running(wx->netdev))
 204                         ngbe_irq_enable(wx, true);
 205                 return IRQ_NONE;        /* Not our interrupt */
 206         }
 207         wx->isb_mem[WX_ISB_VEC0] = 0;
 208         if (!(pdev->msi_enabled))
 209                 wr32(wx, WX_PX_INTA, 1);
 210
 211         wx->isb_mem[WX_ISB_MISC] = 0;
 212         /* would disable interrupts here but it is auto disabled */
 213         napi_schedule_irqoff(&q_vector->napi);
 214
 215         if (netif_running(wx->netdev))
 216                 ngbe_irq_enable(wx, false);
 217
 218         return IRQ_HANDLED;
 219 }
 220
 221 static irqreturn_t ngbe_msix_other(int __always_unused irq, void *data)
 222 {
 223         struct wx *wx = data;
 224
 225         /* re-enable the original interrupt state, no lsc, no queues */
 226         if (netif_running(wx->netdev))
 227                 ngbe_irq_enable(wx, false);
 228
 229         return IRQ_HANDLED;
 230 }
 231
 232 /**
 233  * ngbe_request_msix_irqs - Initialize MSI-X interrupts
 234  * @wx: board private structure
 235  *
 236  * ngbe_request_msix_irqs allocates MSI-X vectors and requests
 237  * interrupts from the kernel.
 238  **/
 239 static int ngbe_request_msix_irqs(struct wx *wx)
 240 {
 241         struct net_device *netdev = wx->netdev;
 242         int vector, err;
 243
 244         for (vector = 0; vector < wx->num_q_vectors; vector++) {
 245                 struct wx_q_vector *q_vector = wx->q_vector[vector];
 246                 struct msix_entry *entry = &wx->msix_entries[vector];
 247
 248                 if (q_vector->tx.ring && q_vector->rx.ring)
 249                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
 250                                  "%s-TxRx-%d", netdev->name, entry->entry);
 251                 else
 252                         /* skip this unused q_vector */
 253                         continue;
 254
 255                 err = request_irq(entry->vector, wx_msix_clean_rings, 0,
 256                                   q_vector->name, q_vector);
 257                 if (err) {
 258                         wx_err(wx, "request_irq failed for MSIX interrupt %s Error: %d\n",
 259                                q_vector->name, err);
 260                         goto free_queue_irqs;
 261                 }
 262         }
 263
 264         err = request_irq(wx->msix_entries[vector].vector,
 265                           ngbe_msix_other, 0, netdev->name, wx);
 266
 267         if (err) {
 268                 wx_err(wx, "request_irq for msix_other failed: %d\n", err);
 269                 goto free_queue_irqs;
 270         }
 271
 272         return 0;
 273
 274 free_queue_irqs:
 275         while (vector) {
 276                 vector--;
 277                 free_irq(wx->msix_entries[vector].vector,
 278                          wx->q_vector[vector]);
 279         }
 280         wx_reset_interrupt_capability(wx);
 281         return err;
 282 }
 283
 284 /**
 285  * ngbe_request_irq - initialize interrupts
 286  * @wx: board private structure
 287  *
 288  * Attempts to configure interrupts using the best available
 289  * capabilities of the hardware and kernel.
 290  **/
 291 static int ngbe_request_irq(struct wx *wx)
 292 {
 293         struct net_device *netdev = wx->netdev;
 294         struct pci_dev *pdev = wx->pdev;
 295         int err;
 296
 297         if (pdev->msix_enabled)
 298                 err = ngbe_request_msix_irqs(wx);
 299         else if (pdev->msi_enabled)
 300                 err = request_irq(pdev->irq, ngbe_intr, 0,
 301                                   netdev->name, wx);
 302         else
 303                 err = request_irq(pdev->irq, ngbe_intr, IRQF_SHARED,
 304                                   netdev->name, wx);
 305
 306         if (err)
 307                 wx_err(wx, "request_irq failed, Error %d\n", err);
 308
 309         return err;
 310 }
 311
 312 static void ngbe_disable_device(struct wx *wx)
 313 {
 314         struct net_device *netdev = wx->netdev;
 315         u32 i;
 316
 317         /* disable all enabled rx queues */
 318         for (i = 0; i < wx->num_rx_queues; i++)
 319                 /* this call also flushes the previous write */
 320                 wx_disable_rx_queue(wx, wx->rx_ring[i]);
 321         /* disable receives */
 322         wx_disable_rx(wx);
 323         wx_napi_disable_all(wx);
 324         netif_tx_stop_all_queues(netdev);
 325         netif_tx_disable(netdev);
 326         if (wx->gpio_ctrl)
 327                 ngbe_sfp_modules_txrx_powerctl(wx, false);
 328         wx_irq_disable(wx);
 329         /* disable transmits in the hardware now that interrupts are off */
 330         for (i = 0; i < wx->num_tx_queues; i++) {
 331                 u8 reg_idx = wx->tx_ring[i]->reg_idx;
 332
 333                 wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH);
 334         }
 335
 336         wx_update_stats(wx);
 337 }
 338
 339 static void ngbe_down(struct wx *wx)
 340 {
 341         phy_stop(wx->phydev);
 342         ngbe_disable_device(wx);
 343         wx_clean_all_tx_rings(wx);
 344         wx_clean_all_rx_rings(wx);
 345 }
 346
 347 static void ngbe_up(struct wx *wx)
 348 {
 349         wx_configure_vectors(wx);
 350
 351         /* make sure to complete pre-operations */
 352         smp_mb__before_atomic();
 353         wx_napi_enable_all(wx);
 354         /* enable transmits */
 355         netif_tx_start_all_queues(wx->netdev);
 356
 357         /* clear any pending interrupts, may auto mask */
 358         rd32(wx, WX_PX_IC(0));
 359         rd32(wx, WX_PX_MISC_IC);
 360         ngbe_irq_enable(wx, true);
 361         if (wx->gpio_ctrl)
 362                 ngbe_sfp_modules_txrx_powerctl(wx, true);
 363
 364         phy_start(wx->phydev);
 365 }
 366
 367 /**
 368  * ngbe_open - Called when a network interface is made active
 369  * @netdev: network interface device structure
 370  *
 371  * Returns 0 on success, negative value on failure
 372  *
 373  * The open entry point is called when a network interface is made
 374  * active by the system (IFF_UP).
 375  **/
 376 static int ngbe_open(struct net_device *netdev)
 377 {
 378         struct wx *wx = netdev_priv(netdev);
 379         int err;
 380
 381         wx_control_hw(wx, true);
 382
 383         err = wx_setup_resources(wx);
 384         if (err)
 385                 return err;
 386
 387         wx_configure(wx);
 388
 389         err = ngbe_request_irq(wx);
 390         if (err)
 391                 goto err_free_resources;
 392
 393         err = ngbe_phy_connect(wx);
 394         if (err)
 395                 goto err_free_irq;
 396
 397         err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues);
 398         if (err)
 399                 goto err_dis_phy;
 400
 401         err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues);
 402         if (err)
 403                 goto err_dis_phy;
 404
 405         ngbe_up(wx);
 406
 407         return 0;
 408 err_dis_phy:
 409         phy_disconnect(wx->phydev);
 410 err_free_irq:
 411         wx_free_irq(wx);
 412 err_free_resources:
 413         wx_free_resources(wx);
 414         return err;
 415 }
 416
 417 /**
 418  * ngbe_close - Disables a network interface
 419  * @netdev: network interface device structure
 420  *
 421  * Returns 0, this is not allowed to fail
 422  *
 423  * The close entry point is called when an interface is de-activated
 424  * by the OS.  The hardware is still under the drivers control, but
 425  * needs to be disabled.  A global MAC reset is issued to stop the
 426  * hardware, and all transmit and receive resources are freed.
 427  **/
 428 static int ngbe_close(struct net_device *netdev)
 429 {
 430         struct wx *wx = netdev_priv(netdev);
 431
 432         ngbe_down(wx);
 433         wx_free_irq(wx);
 434         wx_free_resources(wx);
 435         phy_disconnect(wx->phydev);
 436         wx_control_hw(wx, false);
 437
 438         return 0;
 439 }
 440
 441 static void ngbe_dev_shutdown(struct pci_dev *pdev, bool *enable_wake)
 442 {
 443         struct wx *wx = pci_get_drvdata(pdev);
 444         struct net_device *netdev;
 445         u32 wufc = wx->wol;
 446
 447         netdev = wx->netdev;
 448         rtnl_lock();
 449         netif_device_detach(netdev);
 450
 451         if (netif_running(netdev))
 452                 ngbe_close(netdev);
 453         wx_clear_interrupt_scheme(wx);
 454         rtnl_unlock();
 455
 456         if (wufc) {
 457                 wx_set_rx_mode(netdev);
 458                 wx_configure_rx(wx);
 459                 wr32(wx, NGBE_PSR_WKUP_CTL, wufc);
 460         } else {
 461                 wr32(wx, NGBE_PSR_WKUP_CTL, 0);
 462         }
 463         pci_wake_from_d3(pdev, !!wufc);
 464         *enable_wake = !!wufc;
 465         wx_control_hw(wx, false);
 466
 467         pci_disable_device(pdev);
 468 }
 469
 470 static void ngbe_shutdown(struct pci_dev *pdev)
 471 {
 472         struct wx *wx = pci_get_drvdata(pdev);
 473         bool wake;
 474
 475         wake = !!wx->wol;
 476
 477         ngbe_dev_shutdown(pdev, &wake);
 478
 479         if (system_state == SYSTEM_POWER_OFF) {
 480                 pci_wake_from_d3(pdev, wake);
 481                 pci_set_power_state(pdev, PCI_D3hot);
 482         }
 483 }
 484
 485 static const struct net_device_ops ngbe_netdev_ops = {
 486         .ndo_open               = ngbe_open,
 487         .ndo_stop               = ngbe_close,
 488         .ndo_change_mtu         = wx_change_mtu,
 489         .ndo_start_xmit         = wx_xmit_frame,
 490         .ndo_set_rx_mode        = wx_set_rx_mode,
 491         .ndo_set_features       = wx_set_features,
 492         .ndo_validate_addr      = eth_validate_addr,
 493         .ndo_set_mac_address    = wx_set_mac,
 494         .ndo_get_stats64        = wx_get_stats64,
 495         .ndo_vlan_rx_add_vid    = wx_vlan_rx_add_vid,
 496         .ndo_vlan_rx_kill_vid   = wx_vlan_rx_kill_vid,
 497 };
 498
 499 /**
 500  * ngbe_probe - Device Initialization Routine
 501  * @pdev: PCI device information struct
 502  * @ent: entry in ngbe_pci_tbl
 503  *
 504  * Returns 0 on success, negative on failure
 505  *
 506  * ngbe_probe initializes an wx identified by a pci_dev structure.
 507  * The OS initialization, configuring of the wx private structure,
 508  * and a hardware reset occur.
 509  **/
 510 static int ngbe_probe(struct pci_dev *pdev,
 511                       const struct pci_device_id __always_unused *ent)
 512 {
 513         struct net_device *netdev;
 514         u32 e2rom_cksum_cap = 0;
 515         struct wx *wx = NULL;
 516         static int func_nums;
 517         u16 e2rom_ver = 0;
 518         u32 etrack_id = 0;
 519         u32 saved_ver = 0;
 520         int err;
 521
 522         err = pci_enable_device_mem(pdev);
 523         if (err)
 524                 return err;
 525
 526         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
 527         if (err) {
 528                 dev_err(&pdev->dev,
 529                         "No usable DMA configuration, aborting\n");
 530                 goto err_pci_disable_dev;
 531         }
 532
 533         err = pci_request_selected_regions(pdev,
 534                                            pci_select_bars(pdev, IORESOURCE_MEM),
 535                                            ngbe_driver_name);
 536         if (err) {
 537                 dev_err(&pdev->dev,
 538                         "pci_request_selected_regions failed %d\n", err);
 539                 goto err_pci_disable_dev;
 540         }
 541
 542         pci_set_master(pdev);
 543
 544         netdev = devm_alloc_etherdev_mqs(&pdev->dev,
 545                                          sizeof(struct wx),
 546                                          NGBE_MAX_TX_QUEUES,
 547                                          NGBE_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         wx->msg_enable = BIT(3) - 1;
 559
 560         wx->hw_addr = devm_ioremap(&pdev->dev,
 561                                    pci_resource_start(pdev, 0),
 562                                    pci_resource_len(pdev, 0));
 563         if (!wx->hw_addr) {
 564                 err = -EIO;
 565                 goto err_pci_release_regions;
 566         }
 567
 568         wx->driver_name = ngbe_driver_name;
 569         ngbe_set_ethtool_ops(netdev);
 570         netdev->netdev_ops = &ngbe_netdev_ops;
 571
 572         netdev->features = NETIF_F_SG | NETIF_F_IP_CSUM |
 573                            NETIF_F_TSO | NETIF_F_TSO6 |
 574                            NETIF_F_RXHASH | NETIF_F_RXCSUM;
 575         netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_TSO_MANGLEID;
 576         netdev->vlan_features |= netdev->features;
 577         netdev->features |= NETIF_F_IPV6_CSUM | NETIF_F_VLAN_FEATURES;
 578         /* copy netdev features into list of user selectable features */
 579         netdev->hw_features |= netdev->features | NETIF_F_RXALL;
 580         netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
 581         netdev->features |= NETIF_F_HIGHDMA;
 582         netdev->hw_features |= NETIF_F_GRO;
 583         netdev->features |= NETIF_F_GRO;
 584
 585         netdev->priv_flags |= IFF_UNICAST_FLT;
 586         netdev->priv_flags |= IFF_SUPP_NOFCS;
 587
 588         netdev->min_mtu = ETH_MIN_MTU;
 589         netdev->max_mtu = WX_MAX_JUMBO_FRAME_SIZE -
 590                           (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
 591
 592         wx->bd_number = func_nums;
 593         /* setup the private structure */
 594         err = ngbe_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, NGBE_SPI_ILDR_STATUS_PERST);
 600         if (err)
 601                 goto err_free_mac_table;
 602         err = wx_check_flash_load(wx, NGBE_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 = ngbe_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         if (wx->bus.func == 0) {
 619                 wr32(wx, NGBE_CALSUM_CAP_STATUS, 0x0);
 620                 wr32(wx, NGBE_EEPROM_VERSION_STORE_REG, 0x0);
 621         } else {
 622                 e2rom_cksum_cap = rd32(wx, NGBE_CALSUM_CAP_STATUS);
 623                 saved_ver = rd32(wx, NGBE_EEPROM_VERSION_STORE_REG);
 624         }
 625
 626         wx_init_eeprom_params(wx);
 627         if (wx->bus.func == 0 || e2rom_cksum_cap == 0) {
 628                 /* make sure the EEPROM is ready */
 629                 err = ngbe_eeprom_chksum_hostif(wx);
 630                 if (err) {
 631                         dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n");
 632                         err = -EIO;
 633                         goto err_free_mac_table;
 634                 }
 635         }
 636
 637         wx->wol = 0;
 638         if (wx->wol_hw_supported)
 639                 wx->wol = NGBE_PSR_WKUP_CTL_MAG;
 640
 641         netdev->wol_enabled = !!(wx->wol);
 642         wr32(wx, NGBE_PSR_WKUP_CTL, wx->wol);
 643         device_set_wakeup_enable(&pdev->dev, wx->wol);
 644
 645         /* Save off EEPROM version number and Option Rom version which
 646          * together make a unique identify for the eeprom
 647          */
 648         if (saved_ver) {
 649                 etrack_id = saved_ver;
 650         } else {
 651                 wx_read_ee_hostif(wx,
 652                                   wx->eeprom.sw_region_offset + NGBE_EEPROM_VERSION_H,
 653                                   &e2rom_ver);
 654                 etrack_id = e2rom_ver << 16;
 655                 wx_read_ee_hostif(wx,
 656                                   wx->eeprom.sw_region_offset + NGBE_EEPROM_VERSION_L,
 657                                   &e2rom_ver);
 658                 etrack_id |= e2rom_ver;
 659                 wr32(wx, NGBE_EEPROM_VERSION_STORE_REG, etrack_id);
 660         }
 661         snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
 662                  "0x%08x", etrack_id);
 663
 664         eth_hw_addr_set(netdev, wx->mac.perm_addr);
 665         wx_mac_set_default_filter(wx, wx->mac.perm_addr);
 666
 667         err = wx_init_interrupt_scheme(wx);
 668         if (err)
 669                 goto err_free_mac_table;
 670
 671         /* phy Interface Configuration */
 672         err = ngbe_mdio_init(wx);
 673         if (err)
 674                 goto err_clear_interrupt_scheme;
 675
 676         err = register_netdev(netdev);
 677         if (err)
 678                 goto err_register;
 679
 680         pci_set_drvdata(pdev, wx);
 681
 682         return 0;
 683
 684 err_register:
 685         wx_control_hw(wx, false);
 686 err_clear_interrupt_scheme:
 687         wx_clear_interrupt_scheme(wx);
 688 err_free_mac_table:
 689         kfree(wx->mac_table);
 690 err_pci_release_regions:
 691         pci_release_selected_regions(pdev,
 692                                      pci_select_bars(pdev, IORESOURCE_MEM));
 693 err_pci_disable_dev:
 694         pci_disable_device(pdev);
 695         return err;
 696 }
 697
 698 /**
 699  * ngbe_remove - Device Removal Routine
 700  * @pdev: PCI device information struct
 701  *
 702  * ngbe_remove is called by the PCI subsystem to alert the driver
 703  * that it should release a PCI device.  The could be caused by a
 704  * Hot-Plug event, or because the driver is going to be removed from
 705  * memory.
 706  **/
 707 static void ngbe_remove(struct pci_dev *pdev)
 708 {
 709         struct wx *wx = pci_get_drvdata(pdev);
 710         struct net_device *netdev;
 711
 712         netdev = wx->netdev;
 713         unregister_netdev(netdev);
 714         pci_release_selected_regions(pdev,
 715                                      pci_select_bars(pdev, IORESOURCE_MEM));
 716
 717         kfree(wx->mac_table);
 718         wx_clear_interrupt_scheme(wx);
 719
 720         pci_disable_device(pdev);
 721 }
 722
 723 static int ngbe_suspend(struct pci_dev *pdev, pm_message_t state)
 724 {
 725         bool wake;
 726
 727         ngbe_dev_shutdown(pdev, &wake);
 728         device_set_wakeup_enable(&pdev->dev, wake);
 729
 730         return 0;
 731 }
 732
 733 static int ngbe_resume(struct pci_dev *pdev)
 734 {
 735         struct net_device *netdev;
 736         struct wx *wx;
 737         u32 err;
 738
 739         wx = pci_get_drvdata(pdev);
 740         netdev = wx->netdev;
 741
 742         err = pci_enable_device_mem(pdev);
 743         if (err) {
 744                 wx_err(wx, "Cannot enable PCI device from suspend\n");
 745                 return err;
 746         }
 747         pci_set_master(pdev);
 748         device_wakeup_disable(&pdev->dev);
 749
 750         ngbe_reset_hw(wx);
 751         rtnl_lock();
 752         err = wx_init_interrupt_scheme(wx);
 753         if (!err && netif_running(netdev))
 754                 err = ngbe_open(netdev);
 755         if (!err)
 756                 netif_device_attach(netdev);
 757         rtnl_unlock();
 758
 759         return 0;
 760 }
 761
 762 static struct pci_driver ngbe_driver = {
 763         .name     = ngbe_driver_name,
 764         .id_table = ngbe_pci_tbl,
 765         .probe    = ngbe_probe,
 766         .remove   = ngbe_remove,
 767         .suspend  = ngbe_suspend,
 768         .resume   = ngbe_resume,
 769         .shutdown = ngbe_shutdown,
 770 };
 771
 772 module_pci_driver(ngbe_driver);
 773
 774 MODULE_DEVICE_TABLE(pci, ngbe_pci_tbl);
 775 MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@net-swift.com>");
 776 MODULE_DESCRIPTION("WangXun(R) Gigabit PCI Express Network Driver");
 777 MODULE_LICENSE("GPL");