sys/dev/sfxge/sfxge.c

   1 /*-
   2  * Copyright (c) 2010-2011 Solarflare Communications, Inc.
   3  * All rights reserved.
   4  *
   5  * This software was developed in part by Philip Paeps under contract for
   6  * Solarflare Communications, Inc.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 #include <sys/param.h>
  34 #include <sys/kernel.h>
  35 #include <sys/bus.h>
  36 #include <sys/rman.h>
  37 #include <sys/lock.h>
  38 #include <sys/module.h>
  39 #include <sys/mutex.h>
  40 #include <sys/smp.h>
  41 #include <sys/socket.h>
  42 #include <sys/taskqueue.h>
  43 #include <sys/sockio.h>
  44 #include <sys/sysctl.h>
  45
  46 #include <dev/pci/pcireg.h>
  47 #include <dev/pci/pcivar.h>
  48
  49 #include <net/ethernet.h>
  50 #include <net/if.h>
  51 #include <net/if_media.h>
  52 #include <net/if_types.h>
  53
  54 #include "common/efx.h"
  55
  56 #include "sfxge.h"
  57 #include "sfxge_rx.h"
  58
  59 #define SFXGE_CAP (IFCAP_VLAN_MTU | \
  60                    IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM | IFCAP_TSO |       \
  61                    IFCAP_JUMBO_MTU | IFCAP_LRO |                        \
  62                    IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE)
  63 #define SFXGE_CAP_ENABLE SFXGE_CAP
  64 #define SFXGE_CAP_FIXED (IFCAP_VLAN_MTU | IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM | \
  65                          IFCAP_JUMBO_MTU | IFCAP_LINKSTATE)
  66
  67 MALLOC_DEFINE(M_SFXGE, "sfxge", "Solarflare 10GigE driver");
  68
  69 static void
  70 sfxge_reset(void *arg, int npending);
  71
  72 static int
  73 sfxge_start(struct sfxge_softc *sc)
  74 {
  75         int rc;
  76
  77         sx_assert(&sc->softc_lock, LA_XLOCKED);
  78
  79         if (sc->init_state == SFXGE_STARTED)
  80                 return 0;
  81
  82         if (sc->init_state != SFXGE_REGISTERED) {
  83                 rc = EINVAL;
  84                 goto fail;
  85         }
  86
  87         if ((rc = efx_nic_init(sc->enp)) != 0)
  88                 goto fail;
  89
  90         /* Start processing interrupts. */
  91         if ((rc = sfxge_intr_start(sc)) != 0)
  92                 goto fail2;
  93
  94         /* Start processing events. */
  95         if ((rc = sfxge_ev_start(sc)) != 0)
  96                 goto fail3;
  97
  98         /* Start the receiver side. */
  99         if ((rc = sfxge_rx_start(sc)) != 0)
 100                 goto fail4;
 101
 102         /* Start the transmitter side. */
 103         if ((rc = sfxge_tx_start(sc)) != 0)
 104                 goto fail5;
 105
 106         /* Fire up the port. */
 107         if ((rc = sfxge_port_start(sc)) != 0)
 108                 goto fail6;
 109
 110         sc->init_state = SFXGE_STARTED;
 111
 112         /* Tell the stack we're running. */
 113         sc->ifnet->if_drv_flags |= IFF_DRV_RUNNING;
 114         sc->ifnet->if_drv_flags &= ~IFF_DRV_OACTIVE;
 115
 116         return (0);
 117
 118 fail6:
 119         sfxge_tx_stop(sc);
 120
 121 fail5:
 122         sfxge_rx_stop(sc);
 123
 124 fail4:
 125         sfxge_ev_stop(sc);
 126
 127 fail3:
 128         sfxge_intr_stop(sc);
 129
 130 fail2:
 131         efx_nic_fini(sc->enp);
 132
 133 fail:
 134         device_printf(sc->dev, "sfxge_start: %d\n", rc);
 135
 136         return (rc);
 137 }
 138
 139 static void
 140 sfxge_if_init(void *arg)
 141 {
 142         struct sfxge_softc *sc;
 143
 144         sc = (struct sfxge_softc *)arg;
 145
 146         sx_xlock(&sc->softc_lock);
 147         (void)sfxge_start(sc);
 148         sx_xunlock(&sc->softc_lock);
 149 }
 150
 151 static void
 152 sfxge_stop(struct sfxge_softc *sc)
 153 {
 154         sx_assert(&sc->softc_lock, LA_XLOCKED);
 155
 156         if (sc->init_state != SFXGE_STARTED)
 157                 return;
 158
 159         sc->init_state = SFXGE_REGISTERED;
 160
 161         /* Stop the port. */
 162         sfxge_port_stop(sc);
 163
 164         /* Stop the transmitter. */
 165         sfxge_tx_stop(sc);
 166
 167         /* Stop the receiver. */
 168         sfxge_rx_stop(sc);
 169
 170         /* Stop processing events. */
 171         sfxge_ev_stop(sc);
 172
 173         /* Stop processing interrupts. */
 174         sfxge_intr_stop(sc);
 175
 176         efx_nic_fini(sc->enp);
 177
 178         sc->ifnet->if_drv_flags &= ~IFF_DRV_RUNNING;
 179 }
 180
 181 static int
 182 sfxge_if_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data)
 183 {
 184         struct sfxge_softc *sc;
 185         struct ifreq *ifr;
 186         int error;
 187
 188         ifr = (struct ifreq *)data;
 189         sc = ifp->if_softc;
 190         error = 0;
 191
 192         switch (command) {
 193         case SIOCSIFFLAGS:
 194                 sx_xlock(&sc->softc_lock);
 195                 if (ifp->if_flags & IFF_UP) {
 196                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 197                                 if ((ifp->if_flags ^ sc->if_flags) &
 198                                     (IFF_PROMISC | IFF_ALLMULTI)) {
 199                                         sfxge_mac_filter_set(sc);
 200                                 }
 201                         } else
 202                                 sfxge_start(sc);
 203                 } else
 204                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 205                                 sfxge_stop(sc);
 206                 sc->if_flags = ifp->if_flags;
 207                 sx_xunlock(&sc->softc_lock);
 208                 break;
 209         case SIOCSIFMTU:
 210                 if (ifr->ifr_mtu == ifp->if_mtu) {
 211                         /* Nothing to do */
 212                         error = 0;
 213                 } else if (ifr->ifr_mtu > SFXGE_MAX_MTU) {
 214                         error = EINVAL;
 215                 } else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 216                         ifp->if_mtu = ifr->ifr_mtu;
 217                         error = 0;
 218                 } else {
 219                         /* Restart required */
 220                         sx_xlock(&sc->softc_lock);
 221                         sfxge_stop(sc);
 222                         ifp->if_mtu = ifr->ifr_mtu;
 223                         error = sfxge_start(sc);
 224                         sx_xunlock(&sc->softc_lock);
 225                         if (error) {
 226                                 ifp->if_flags &= ~IFF_UP;
 227                                 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
 228                                 if_down(ifp);
 229                         }
 230                 }
 231                 break;
 232         case SIOCADDMULTI:
 233         case SIOCDELMULTI:
 234                 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 235                         sfxge_mac_filter_set(sc);
 236                 break;
 237         case SIOCSIFCAP:
 238                 sx_xlock(&sc->softc_lock);
 239
 240                 /*
 241                  * The networking core already rejects attempts to
 242                  * enable capabilities we don't have.  We still have
 243                  * to reject attempts to disable capabilities that we
 244                  * can't (yet) disable.
 245                  */
 246                 if (~ifr->ifr_reqcap & SFXGE_CAP_FIXED) {
 247                         error = EINVAL;
 248                         sx_xunlock(&sc->softc_lock);
 249                         break;
 250                 }
 251
 252                 ifp->if_capenable = ifr->ifr_reqcap;
 253                 if (ifp->if_capenable & IFCAP_TXCSUM)
 254                         ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP);
 255                 else
 256                         ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP);
 257                 if (ifp->if_capenable & IFCAP_TSO)
 258                         ifp->if_hwassist |= CSUM_TSO;
 259                 else
 260                         ifp->if_hwassist &= ~CSUM_TSO;
 261
 262                 sx_xunlock(&sc->softc_lock);
 263                 break;
 264         case SIOCSIFMEDIA:
 265         case SIOCGIFMEDIA:
 266                 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
 267                 break;
 268         default:
 269                 error = ether_ioctl(ifp, command, data);
 270         }
 271
 272         return (error);
 273 }
 274
 275 static void
 276 sfxge_ifnet_fini(struct ifnet *ifp)
 277 {
 278         struct sfxge_softc *sc = ifp->if_softc;
 279
 280         sx_xlock(&sc->softc_lock);
 281         sfxge_stop(sc);
 282         sx_xunlock(&sc->softc_lock);
 283
 284         ifmedia_removeall(&sc->media);
 285         ether_ifdetach(ifp);
 286         if_free(ifp);
 287 }
 288
 289 static int
 290 sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc)
 291 {
 292         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp);
 293         device_t dev;
 294         int rc;
 295
 296         dev = sc->dev;
 297         sc->ifnet = ifp;
 298
 299         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 300         ifp->if_init = sfxge_if_init;
 301         ifp->if_softc = sc;
 302         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 303         ifp->if_ioctl = sfxge_if_ioctl;
 304
 305         ifp->if_capabilities = SFXGE_CAP;
 306         ifp->if_capenable = SFXGE_CAP_ENABLE;
 307         ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO;
 308
 309         ether_ifattach(ifp, encp->enc_mac_addr);
 310
 311 #ifdef SFXGE_HAVE_MQ
 312         ifp->if_transmit = sfxge_if_transmit;
 313         ifp->if_qflush = sfxge_if_qflush;
 314 #else
 315         ifp->if_start = sfxge_if_start;
 316         IFQ_SET_MAXLEN(&ifp->if_snd, SFXGE_NDESCS - 1);
 317         ifp->if_snd.ifq_drv_maxlen = SFXGE_NDESCS - 1;
 318         IFQ_SET_READY(&ifp->if_snd);
 319
 320         mtx_init(&sc->tx_lock, "txq", NULL, MTX_DEF);
 321 #endif
 322
 323         if ((rc = sfxge_port_ifmedia_init(sc)) != 0)
 324                 goto fail;
 325
 326         return 0;
 327
 328 fail:
 329         ether_ifdetach(sc->ifnet);
 330         return rc;
 331 }
 332
 333 void
 334 sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp)
 335 {
 336         KASSERT(sc->buffer_table_next + n <=
 337                 efx_nic_cfg_get(sc->enp)->enc_buftbl_limit,
 338                 ("buffer table full"));
 339
 340         *idp = sc->buffer_table_next;
 341         sc->buffer_table_next += n;
 342 }
 343
 344 static int
 345 sfxge_bar_init(struct sfxge_softc *sc)
 346 {
 347         efsys_bar_t *esbp = &sc->bar;
 348
 349         esbp->esb_rid = PCIR_BAR(EFX_MEM_BAR);
 350         if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
 351             &esbp->esb_rid, RF_ACTIVE)) == NULL) {
 352                 device_printf(sc->dev, "Cannot allocate BAR region %d\n",
 353                     EFX_MEM_BAR);
 354                 return (ENXIO);
 355         }
 356         esbp->esb_tag = rman_get_bustag(esbp->esb_res);
 357         esbp->esb_handle = rman_get_bushandle(esbp->esb_res);
 358         mtx_init(&esbp->esb_lock, "sfxge_efsys_bar", NULL, MTX_DEF);
 359
 360         return (0);
 361 }
 362
 363 static void
 364 sfxge_bar_fini(struct sfxge_softc *sc)
 365 {
 366         efsys_bar_t *esbp = &sc->bar;
 367
 368         bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid,
 369             esbp->esb_res);
 370         mtx_destroy(&esbp->esb_lock);
 371 }
 372
 373 static int
 374 sfxge_create(struct sfxge_softc *sc)
 375 {
 376         device_t dev;
 377         efx_nic_t *enp;
 378         int error;
 379
 380         dev = sc->dev;
 381
 382         sx_init(&sc->softc_lock, "sfxge_softc");
 383
 384         sc->stats_node = SYSCTL_ADD_NODE(
 385                 device_get_sysctl_ctx(dev),
 386                 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 387                 OID_AUTO, "stats", CTLFLAG_RD, NULL, "Statistics");
 388         if (!sc->stats_node) {
 389                 error = ENOMEM;
 390                 goto fail;
 391         }
 392
 393         TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc);
 394
 395         (void) pci_enable_busmaster(dev);
 396
 397         /* Initialize DMA mappings. */
 398         if ((error = sfxge_dma_init(sc)) != 0)
 399                 goto fail;
 400
 401         /* Map the device registers. */
 402         if ((error = sfxge_bar_init(sc)) != 0)
 403                 goto fail;
 404
 405         error = efx_family(pci_get_vendor(dev), pci_get_device(dev),
 406             &sc->family);
 407         KASSERT(error == 0, ("Family should be filtered by sfxge_probe()"));
 408
 409         /* Create the common code nic object. */
 410         mtx_init(&sc->enp_lock, "sfxge_nic", NULL, MTX_DEF);
 411         if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc,
 412             &sc->bar, &sc->enp_lock, &enp)) != 0)
 413                 goto fail3;
 414         sc->enp = enp;
 415
 416         /* Initialize MCDI to talk to the microcontroller. */
 417         if ((error = sfxge_mcdi_init(sc)) != 0)
 418                 goto fail4;
 419
 420         /* Probe the NIC and build the configuration data area. */
 421         if ((error = efx_nic_probe(enp)) != 0)
 422                 goto fail5;
 423
 424         /* Initialize the NVRAM. */
 425         if ((error = efx_nvram_init(enp)) != 0)
 426                 goto fail6;
 427
 428         /* Initialize the VPD. */
 429         if ((error = efx_vpd_init(enp)) != 0)
 430                 goto fail7;
 431
 432         /* Reset the NIC. */
 433         if ((error = efx_nic_reset(enp)) != 0)
 434                 goto fail8;
 435
 436         /* Initialize buffer table allocation. */
 437         sc->buffer_table_next = 0;
 438
 439         /* Set up interrupts. */
 440         if ((error = sfxge_intr_init(sc)) != 0)
 441                 goto fail8;
 442
 443         /* Initialize event processing state. */
 444         if ((error = sfxge_ev_init(sc)) != 0)
 445                 goto fail11;
 446
 447         /* Initialize receive state. */
 448         if ((error = sfxge_rx_init(sc)) != 0)
 449                 goto fail12;
 450
 451         /* Initialize transmit state. */
 452         if ((error = sfxge_tx_init(sc)) != 0)
 453                 goto fail13;
 454
 455         /* Initialize port state. */
 456         if ((error = sfxge_port_init(sc)) != 0)
 457                 goto fail14;
 458
 459         sc->init_state = SFXGE_INITIALIZED;
 460
 461         return (0);
 462
 463 fail14:
 464         sfxge_tx_fini(sc);
 465
 466 fail13:
 467         sfxge_rx_fini(sc);
 468
 469 fail12:
 470         sfxge_ev_fini(sc);
 471
 472 fail11:
 473         sfxge_intr_fini(sc);
 474
 475 fail8:
 476         efx_vpd_fini(enp);
 477
 478 fail7:
 479         efx_nvram_fini(enp);
 480
 481 fail6:
 482         efx_nic_unprobe(enp);
 483
 484 fail5:
 485         sfxge_mcdi_fini(sc);
 486
 487 fail4:
 488         sc->enp = NULL;
 489         efx_nic_destroy(enp);
 490         mtx_destroy(&sc->enp_lock);
 491
 492 fail3:
 493         sfxge_bar_fini(sc);
 494         (void) pci_disable_busmaster(sc->dev);
 495
 496 fail:
 497         sc->dev = NULL;
 498         sx_destroy(&sc->softc_lock);
 499         return (error);
 500 }
 501
 502 static void
 503 sfxge_destroy(struct sfxge_softc *sc)
 504 {
 505         efx_nic_t *enp;
 506
 507         /* Clean up port state. */
 508         sfxge_port_fini(sc);
 509
 510         /* Clean up transmit state. */
 511         sfxge_tx_fini(sc);
 512
 513         /* Clean up receive state. */
 514         sfxge_rx_fini(sc);
 515
 516         /* Clean up event processing state. */
 517         sfxge_ev_fini(sc);
 518
 519         /* Clean up interrupts. */
 520         sfxge_intr_fini(sc);
 521
 522         /* Tear down common code subsystems. */
 523         efx_nic_reset(sc->enp);
 524         efx_vpd_fini(sc->enp);
 525         efx_nvram_fini(sc->enp);
 526         efx_nic_unprobe(sc->enp);
 527
 528         /* Tear down MCDI. */
 529         sfxge_mcdi_fini(sc);
 530
 531         /* Destroy common code context. */
 532         enp = sc->enp;
 533         sc->enp = NULL;
 534         efx_nic_destroy(enp);
 535
 536         /* Free DMA memory. */
 537         sfxge_dma_fini(sc);
 538
 539         /* Free mapped BARs. */
 540         sfxge_bar_fini(sc);
 541
 542         (void) pci_disable_busmaster(sc->dev);
 543
 544         taskqueue_drain(taskqueue_thread, &sc->task_reset);
 545
 546         /* Destroy the softc lock. */
 547         sx_destroy(&sc->softc_lock);
 548 }
 549
 550 static int
 551 sfxge_vpd_handler(SYSCTL_HANDLER_ARGS)
 552 {
 553         struct sfxge_softc *sc = arg1;
 554         efx_vpd_value_t value;
 555         int rc;
 556
 557         value.evv_tag = arg2 >> 16;
 558         value.evv_keyword = arg2 & 0xffff;
 559         if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value))
 560             != 0)
 561                 return rc;
 562
 563         return SYSCTL_OUT(req, value.evv_value, value.evv_length);
 564 }
 565
 566 static void
 567 sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list,
 568                   efx_vpd_tag_t tag, const char *keyword)
 569 {
 570         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 571         efx_vpd_value_t value;
 572
 573         /* Check whether VPD tag/keyword is present */
 574         value.evv_tag = tag;
 575         value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]);
 576         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0)
 577                 return;
 578
 579         SYSCTL_ADD_PROC(
 580                 ctx, list, OID_AUTO, keyword, CTLTYPE_STRING|CTLFLAG_RD,
 581                 sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]),
 582                 sfxge_vpd_handler, "A", "");
 583 }
 584
 585 static int
 586 sfxge_vpd_init(struct sfxge_softc *sc)
 587 {
 588         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 589         struct sysctl_oid *vpd_node;
 590         struct sysctl_oid_list *vpd_list;
 591         char keyword[3];
 592         efx_vpd_value_t value;
 593         int rc;
 594
 595         if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0)
 596                 goto fail;
 597         sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK);
 598         if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0)
 599                 goto fail2;
 600
 601         /* Copy ID (product name) into device description, and log it. */
 602         value.evv_tag = EFX_VPD_ID;
 603         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) {
 604                 value.evv_value[value.evv_length] = 0;
 605                 device_set_desc_copy(sc->dev, value.evv_value);
 606                 device_printf(sc->dev, "%s\n", value.evv_value);
 607         }
 608
 609         vpd_node = SYSCTL_ADD_NODE(
 610                 ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)),
 611                 OID_AUTO, "vpd", CTLFLAG_RD, NULL, "Vital Product Data");
 612         vpd_list = SYSCTL_CHILDREN(vpd_node);
 613
 614         /* Add sysctls for all expected and any vendor-defined keywords. */
 615         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN");
 616         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC");
 617         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN");
 618         keyword[0] = 'V';
 619         keyword[2] = 0;
 620         for (keyword[1] = '0'; keyword[1] <= '9'; keyword[1]++)
 621                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 622         for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++)
 623                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 624
 625         return 0;
 626
 627 fail2:
 628         free(sc->vpd_data, M_SFXGE);
 629 fail:
 630         return rc;
 631 }
 632
 633 static void
 634 sfxge_vpd_fini(struct sfxge_softc *sc)
 635 {
 636         free(sc->vpd_data, M_SFXGE);
 637 }
 638
 639 static void
 640 sfxge_reset(void *arg, int npending)
 641 {
 642         struct sfxge_softc *sc;
 643         int rc;
 644
 645         (void)npending;
 646
 647         sc = (struct sfxge_softc *)arg;
 648
 649         sx_xlock(&sc->softc_lock);
 650
 651         if (sc->init_state != SFXGE_STARTED)
 652                 goto done;
 653
 654         sfxge_stop(sc);
 655         efx_nic_reset(sc->enp);
 656         if ((rc = sfxge_start(sc)) != 0)
 657                 device_printf(sc->dev,
 658                               "reset failed (%d); interface is now stopped\n",
 659                               rc);
 660
 661 done:
 662         sx_xunlock(&sc->softc_lock);
 663 }
 664
 665 void
 666 sfxge_schedule_reset(struct sfxge_softc *sc)
 667 {
 668         taskqueue_enqueue(taskqueue_thread, &sc->task_reset);
 669 }
 670
 671 static int
 672 sfxge_attach(device_t dev)
 673 {
 674         struct sfxge_softc *sc;
 675         struct ifnet *ifp;
 676         int error;
 677
 678         sc = device_get_softc(dev);
 679         sc->dev = dev;
 680
 681         /* Allocate ifnet. */
 682         ifp = if_alloc(IFT_ETHER);
 683         if (ifp == NULL) {
 684                 device_printf(dev, "Couldn't allocate ifnet\n");
 685                 error = ENOMEM;
 686                 goto fail;
 687         }
 688         sc->ifnet = ifp;
 689
 690         /* Initialize hardware. */
 691         if ((error = sfxge_create(sc)) != 0)
 692                 goto fail2;
 693
 694         /* Create the ifnet for the port. */
 695         if ((error = sfxge_ifnet_init(ifp, sc)) != 0)
 696                 goto fail3;
 697
 698         if ((error = sfxge_vpd_init(sc)) != 0)
 699                 goto fail4;
 700
 701         sc->init_state = SFXGE_REGISTERED;
 702
 703         return (0);
 704
 705 fail4:
 706         sfxge_ifnet_fini(ifp);
 707 fail3:
 708         sfxge_destroy(sc);
 709
 710 fail2:
 711         if_free(sc->ifnet);
 712
 713 fail:
 714         return (error);
 715 }
 716
 717 static int
 718 sfxge_detach(device_t dev)
 719 {
 720         struct sfxge_softc *sc;
 721
 722         sc = device_get_softc(dev);
 723
 724         sfxge_vpd_fini(sc);
 725
 726         /* Destroy the ifnet. */
 727         sfxge_ifnet_fini(sc->ifnet);
 728
 729         /* Tear down hardware. */
 730         sfxge_destroy(sc);
 731
 732         return (0);
 733 }
 734
 735 static int
 736 sfxge_probe(device_t dev)
 737 {
 738         uint16_t pci_vendor_id;
 739         uint16_t pci_device_id;
 740         efx_family_t family;
 741         int rc;
 742
 743         pci_vendor_id = pci_get_vendor(dev);
 744         pci_device_id = pci_get_device(dev);
 745
 746         rc = efx_family(pci_vendor_id, pci_device_id, &family);
 747         if (rc)
 748                 return ENXIO;
 749
 750         KASSERT(family == EFX_FAMILY_SIENA, ("impossible controller family"));
 751         device_set_desc(dev, "Solarflare SFC9000 family");
 752         return 0;
 753 }
 754
 755 static device_method_t sfxge_methods[] = {
 756         DEVMETHOD(device_probe,         sfxge_probe),
 757         DEVMETHOD(device_attach,        sfxge_attach),
 758         DEVMETHOD(device_detach,        sfxge_detach),
 759
 760         DEVMETHOD_END
 761 };
 762
 763 static devclass_t sfxge_devclass;
 764
 765 static driver_t sfxge_driver = {
 766         "sfxge",
 767         sfxge_methods,
 768         sizeof(struct sfxge_softc)
 769 };
 770
 771 DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0);