sys/dev/sfxge/sfxge.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2010-2016 Solarflare Communications Inc.
   5  * All rights reserved.
   6  *
   7  * This software was developed in part by Philip Paeps under contract for
   8  * Solarflare Communications, Inc.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright notice,
  14  *    this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright notice,
  16  *    this list of conditions and the following disclaimer in the documentation
  17  *    and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  20  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  26  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  27  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  28  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  29  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  *
  31  * The views and conclusions contained in the software and documentation are
  32  * those of the authors and should not be interpreted as representing official
  33  * policies, either expressed or implied, of the FreeBSD Project.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __FBSDID("$FreeBSD$");
  38
  39 #include "opt_rss.h"
  40
  41 #include <sys/param.h>
  42 #include <sys/kernel.h>
  43 #include <sys/bus.h>
  44 #include <sys/rman.h>
  45 #include <sys/lock.h>
  46 #include <sys/module.h>
  47 #include <sys/mutex.h>
  48 #include <sys/smp.h>
  49 #include <sys/socket.h>
  50 #include <sys/taskqueue.h>
  51 #include <sys/sockio.h>
  52 #include <sys/sysctl.h>
  53 #include <sys/priv.h>
  54 #include <sys/syslog.h>
  55
  56 #include <dev/pci/pcireg.h>
  57 #include <dev/pci/pcivar.h>
  58
  59 #include <net/ethernet.h>
  60 #include <net/if.h>
  61 #include <net/if_var.h>
  62 #include <net/if_media.h>
  63 #include <net/if_types.h>
  64
  65 #ifdef RSS
  66 #include <net/rss_config.h>
  67 #endif
  68
  69 #include "common/efx.h"
  70
  71 #include "sfxge.h"
  72 #include "sfxge_rx.h"
  73 #include "sfxge_ioc.h"
  74 #include "sfxge_version.h"
  75
  76 #define SFXGE_CAP (IFCAP_VLAN_MTU | IFCAP_VLAN_HWCSUM |                 \
  77                    IFCAP_RXCSUM | IFCAP_TXCSUM |                        \
  78                    IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6 |              \
  79                    IFCAP_TSO4 | IFCAP_TSO6 |                            \
  80                    IFCAP_JUMBO_MTU |                                    \
  81                    IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE | IFCAP_HWSTATS)
  82 #define SFXGE_CAP_ENABLE SFXGE_CAP
  83 #define SFXGE_CAP_FIXED (IFCAP_VLAN_MTU |                               \
  84                          IFCAP_JUMBO_MTU | IFCAP_LINKSTATE | IFCAP_HWSTATS)
  85
  86 MALLOC_DEFINE(M_SFXGE, "sfxge", "Solarflare 10GigE driver");
  87
  88 SYSCTL_NODE(_hw, OID_AUTO, sfxge, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
  89     "SFXGE driver parameters");
  90
  91 #define SFXGE_PARAM_RX_RING     SFXGE_PARAM(rx_ring)
  92 static int sfxge_rx_ring_entries = SFXGE_NDESCS;
  93 TUNABLE_INT(SFXGE_PARAM_RX_RING, &sfxge_rx_ring_entries);
  94 SYSCTL_INT(_hw_sfxge, OID_AUTO, rx_ring, CTLFLAG_RDTUN,
  95            &sfxge_rx_ring_entries, 0,
  96            "Maximum number of descriptors in a receive ring");
  97
  98 #define SFXGE_PARAM_TX_RING     SFXGE_PARAM(tx_ring)
  99 static int sfxge_tx_ring_entries = SFXGE_NDESCS;
 100 TUNABLE_INT(SFXGE_PARAM_TX_RING, &sfxge_tx_ring_entries);
 101 SYSCTL_INT(_hw_sfxge, OID_AUTO, tx_ring, CTLFLAG_RDTUN,
 102            &sfxge_tx_ring_entries, 0,
 103            "Maximum number of descriptors in a transmit ring");
 104
 105 #define SFXGE_PARAM_RESTART_ATTEMPTS    SFXGE_PARAM(restart_attempts)
 106 static int sfxge_restart_attempts = 3;
 107 TUNABLE_INT(SFXGE_PARAM_RESTART_ATTEMPTS, &sfxge_restart_attempts);
 108 SYSCTL_INT(_hw_sfxge, OID_AUTO, restart_attempts, CTLFLAG_RDTUN,
 109            &sfxge_restart_attempts, 0,
 110            "Maximum number of attempts to bring interface up after reset");
 111
 112 #if EFSYS_OPT_MCDI_LOGGING
 113 #define SFXGE_PARAM_MCDI_LOGGING        SFXGE_PARAM(mcdi_logging)
 114 static int sfxge_mcdi_logging = 0;
 115 TUNABLE_INT(SFXGE_PARAM_MCDI_LOGGING, &sfxge_mcdi_logging);
 116 #endif
 117
 118 static void
 119 sfxge_reset(void *arg, int npending);
 120
 121 static int
 122 sfxge_estimate_rsrc_limits(struct sfxge_softc *sc)
 123 {
 124         efx_drv_limits_t limits;
 125         int rc;
 126         unsigned int evq_max;
 127         uint32_t evq_allocated;
 128         uint32_t rxq_allocated;
 129         uint32_t txq_allocated;
 130
 131         /*
 132          * Limit the number of event queues to:
 133          *  - number of CPUs
 134          *  - hardwire maximum RSS channels
 135          *  - administratively specified maximum RSS channels
 136          */
 137 #ifdef RSS
 138         /*
 139          * Avoid extra limitations so that the number of queues
 140          * may be configured at administrator's will
 141          */
 142         evq_max = MIN(MAX(rss_getnumbuckets(), 1), EFX_MAXRSS);
 143 #else
 144         evq_max = MIN(mp_ncpus, EFX_MAXRSS);
 145 #endif
 146         if (sc->max_rss_channels > 0)
 147                 evq_max = MIN(evq_max, sc->max_rss_channels);
 148
 149         memset(&limits, 0, sizeof(limits));
 150
 151         limits.edl_min_evq_count = 1;
 152         limits.edl_max_evq_count = evq_max;
 153         limits.edl_min_txq_count = SFXGE_EVQ0_N_TXQ(sc);
 154         limits.edl_max_txq_count = evq_max + SFXGE_EVQ0_N_TXQ(sc) - 1;
 155         limits.edl_min_rxq_count = 1;
 156         limits.edl_max_rxq_count = evq_max;
 157
 158         efx_nic_set_drv_limits(sc->enp, &limits);
 159
 160         if ((rc = efx_nic_init(sc->enp)) != 0)
 161                 return (rc);
 162
 163         rc = efx_nic_get_vi_pool(sc->enp, &evq_allocated, &rxq_allocated,
 164                                  &txq_allocated);
 165         if (rc != 0) {
 166                 efx_nic_fini(sc->enp);
 167                 return (rc);
 168         }
 169
 170         KASSERT(txq_allocated >= SFXGE_EVQ0_N_TXQ(sc),
 171                 ("txq_allocated < %u", SFXGE_EVQ0_N_TXQ(sc)));
 172
 173         sc->evq_max = MIN(evq_allocated, evq_max);
 174         sc->evq_max = MIN(rxq_allocated, sc->evq_max);
 175         sc->evq_max = MIN(txq_allocated - (SFXGE_EVQ0_N_TXQ(sc) - 1),
 176                           sc->evq_max);
 177
 178         KASSERT(sc->evq_max <= evq_max,
 179                 ("allocated more than maximum requested"));
 180
 181 #ifdef RSS
 182         if (sc->evq_max < rss_getnumbuckets())
 183                 device_printf(sc->dev, "The number of allocated queues (%u) "
 184                               "is less than the number of RSS buckets (%u); "
 185                               "performance degradation might be observed",
 186                               sc->evq_max, rss_getnumbuckets());
 187 #endif
 188
 189         /*
 190          * NIC is kept initialized in the case of success to be able to
 191          * initialize port to find out media types.
 192          */
 193         return (0);
 194 }
 195
 196 static int
 197 sfxge_set_drv_limits(struct sfxge_softc *sc)
 198 {
 199         efx_drv_limits_t limits;
 200
 201         memset(&limits, 0, sizeof(limits));
 202
 203         /* Limits are strict since take into account initial estimation */
 204         limits.edl_min_evq_count = limits.edl_max_evq_count =
 205             sc->intr.n_alloc;
 206         limits.edl_min_txq_count = limits.edl_max_txq_count =
 207             sc->intr.n_alloc + SFXGE_EVQ0_N_TXQ(sc) - 1;
 208         limits.edl_min_rxq_count = limits.edl_max_rxq_count =
 209             sc->intr.n_alloc;
 210
 211         return (efx_nic_set_drv_limits(sc->enp, &limits));
 212 }
 213
 214 static int
 215 sfxge_start(struct sfxge_softc *sc)
 216 {
 217         int rc;
 218
 219         SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc);
 220
 221         if (sc->init_state == SFXGE_STARTED)
 222                 return (0);
 223
 224         if (sc->init_state != SFXGE_REGISTERED) {
 225                 rc = EINVAL;
 226                 goto fail;
 227         }
 228
 229         /* Set required resource limits */
 230         if ((rc = sfxge_set_drv_limits(sc)) != 0)
 231                 goto fail;
 232
 233         if ((rc = efx_nic_init(sc->enp)) != 0)
 234                 goto fail;
 235
 236         /* Start processing interrupts. */
 237         if ((rc = sfxge_intr_start(sc)) != 0)
 238                 goto fail2;
 239
 240         /* Start processing events. */
 241         if ((rc = sfxge_ev_start(sc)) != 0)
 242                 goto fail3;
 243
 244         /* Fire up the port. */
 245         if ((rc = sfxge_port_start(sc)) != 0)
 246                 goto fail4;
 247
 248         /* Start the receiver side. */
 249         if ((rc = sfxge_rx_start(sc)) != 0)
 250                 goto fail5;
 251
 252         /* Start the transmitter side. */
 253         if ((rc = sfxge_tx_start(sc)) != 0)
 254                 goto fail6;
 255
 256         sc->init_state = SFXGE_STARTED;
 257
 258         /* Tell the stack we're running. */
 259         sc->ifnet->if_drv_flags |= IFF_DRV_RUNNING;
 260         sc->ifnet->if_drv_flags &= ~IFF_DRV_OACTIVE;
 261
 262         return (0);
 263
 264 fail6:
 265         sfxge_rx_stop(sc);
 266
 267 fail5:
 268         sfxge_port_stop(sc);
 269
 270 fail4:
 271         sfxge_ev_stop(sc);
 272
 273 fail3:
 274         sfxge_intr_stop(sc);
 275
 276 fail2:
 277         efx_nic_fini(sc->enp);
 278
 279 fail:
 280         device_printf(sc->dev, "sfxge_start: %d\n", rc);
 281
 282         return (rc);
 283 }
 284
 285 static void
 286 sfxge_if_init(void *arg)
 287 {
 288         struct sfxge_softc *sc;
 289
 290         sc = (struct sfxge_softc *)arg;
 291
 292         SFXGE_ADAPTER_LOCK(sc);
 293         (void)sfxge_start(sc);
 294         SFXGE_ADAPTER_UNLOCK(sc);
 295 }
 296
 297 static void
 298 sfxge_stop(struct sfxge_softc *sc)
 299 {
 300         SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc);
 301
 302         if (sc->init_state != SFXGE_STARTED)
 303                 return;
 304
 305         sc->init_state = SFXGE_REGISTERED;
 306
 307         /* Stop the transmitter. */
 308         sfxge_tx_stop(sc);
 309
 310         /* Stop the receiver. */
 311         sfxge_rx_stop(sc);
 312
 313         /* Stop the port. */
 314         sfxge_port_stop(sc);
 315
 316         /* Stop processing events. */
 317         sfxge_ev_stop(sc);
 318
 319         /* Stop processing interrupts. */
 320         sfxge_intr_stop(sc);
 321
 322         efx_nic_fini(sc->enp);
 323
 324         sc->ifnet->if_drv_flags &= ~IFF_DRV_RUNNING;
 325 }
 326
 327 static int
 328 sfxge_vpd_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ioc)
 329 {
 330         efx_vpd_value_t value;
 331         int rc = 0;
 332
 333         switch (ioc->u.vpd.op) {
 334         case SFXGE_VPD_OP_GET_KEYWORD:
 335                 value.evv_tag = ioc->u.vpd.tag;
 336                 value.evv_keyword = ioc->u.vpd.keyword;
 337                 rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value);
 338                 if (rc != 0)
 339                         break;
 340                 ioc->u.vpd.len = MIN(ioc->u.vpd.len, value.evv_length);
 341                 if (ioc->u.vpd.payload != 0) {
 342                         rc = copyout(value.evv_value, ioc->u.vpd.payload,
 343                                      ioc->u.vpd.len);
 344                 }
 345                 break;
 346         case SFXGE_VPD_OP_SET_KEYWORD:
 347                 if (ioc->u.vpd.len > sizeof(value.evv_value))
 348                         return (EINVAL);
 349                 value.evv_tag = ioc->u.vpd.tag;
 350                 value.evv_keyword = ioc->u.vpd.keyword;
 351                 value.evv_length = ioc->u.vpd.len;
 352                 rc = copyin(ioc->u.vpd.payload, value.evv_value, value.evv_length);
 353                 if (rc != 0)
 354                         break;
 355                 rc = efx_vpd_set(sc->enp, sc->vpd_data, sc->vpd_size, &value);
 356                 if (rc != 0)
 357                         break;
 358                 rc = efx_vpd_verify(sc->enp, sc->vpd_data, sc->vpd_size);
 359                 if (rc != 0)
 360                         break;
 361                 rc = efx_vpd_write(sc->enp, sc->vpd_data, sc->vpd_size);
 362                 break;
 363         default:
 364                 rc = EOPNOTSUPP;
 365                 break;
 366         }
 367
 368         return (rc);
 369 }
 370
 371 static int
 372 sfxge_private_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ioc)
 373 {
 374         switch (ioc->op) {
 375         case SFXGE_MCDI_IOC:
 376                 return (sfxge_mcdi_ioctl(sc, ioc));
 377         case SFXGE_NVRAM_IOC:
 378                 return (sfxge_nvram_ioctl(sc, ioc));
 379         case SFXGE_VPD_IOC:
 380                 return (sfxge_vpd_ioctl(sc, ioc));
 381         default:
 382                 return (EOPNOTSUPP);
 383         }
 384 }
 385
 386 static int
 387 sfxge_if_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data)
 388 {
 389         struct sfxge_softc *sc;
 390         struct ifreq *ifr;
 391         sfxge_ioc_t ioc;
 392         int error;
 393
 394         ifr = (struct ifreq *)data;
 395         sc = ifp->if_softc;
 396         error = 0;
 397
 398         switch (command) {
 399         case SIOCSIFFLAGS:
 400                 SFXGE_ADAPTER_LOCK(sc);
 401                 if (ifp->if_flags & IFF_UP) {
 402                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 403                                 if ((ifp->if_flags ^ sc->if_flags) &
 404                                     (IFF_PROMISC | IFF_ALLMULTI)) {
 405                                         sfxge_mac_filter_set(sc);
 406                                 }
 407                         } else
 408                                 sfxge_start(sc);
 409                 } else
 410                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 411                                 sfxge_stop(sc);
 412                 sc->if_flags = ifp->if_flags;
 413                 SFXGE_ADAPTER_UNLOCK(sc);
 414                 break;
 415         case SIOCSIFMTU:
 416                 if (ifr->ifr_mtu == ifp->if_mtu) {
 417                         /* Nothing to do */
 418                         error = 0;
 419                 } else if (ifr->ifr_mtu > SFXGE_MAX_MTU) {
 420                         error = EINVAL;
 421                 } else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 422                         ifp->if_mtu = ifr->ifr_mtu;
 423                         error = 0;
 424                 } else {
 425                         /* Restart required */
 426                         SFXGE_ADAPTER_LOCK(sc);
 427                         sfxge_stop(sc);
 428                         ifp->if_mtu = ifr->ifr_mtu;
 429                         error = sfxge_start(sc);
 430                         SFXGE_ADAPTER_UNLOCK(sc);
 431                         if (error != 0) {
 432                                 ifp->if_flags &= ~IFF_UP;
 433                                 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
 434                                 if_down(ifp);
 435                         }
 436                 }
 437                 break;
 438         case SIOCADDMULTI:
 439         case SIOCDELMULTI:
 440                 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 441                         sfxge_mac_filter_set(sc);
 442                 break;
 443         case SIOCSIFCAP:
 444         {
 445                 int reqcap = ifr->ifr_reqcap;
 446                 int capchg_mask;
 447
 448                 SFXGE_ADAPTER_LOCK(sc);
 449
 450                 /* Capabilities to be changed in accordance with request */
 451                 capchg_mask = ifp->if_capenable ^ reqcap;
 452
 453                 /*
 454                  * The networking core already rejects attempts to
 455                  * enable capabilities we don't have.  We still have
 456                  * to reject attempts to disable capabilities that we
 457                  * can't (yet) disable.
 458                  */
 459                 KASSERT((reqcap & ~ifp->if_capabilities) == 0,
 460                     ("Unsupported capabilities 0x%x requested 0x%x vs "
 461                      "supported 0x%x",
 462                      reqcap & ~ifp->if_capabilities,
 463                      reqcap , ifp->if_capabilities));
 464                 if (capchg_mask & SFXGE_CAP_FIXED) {
 465                         error = EINVAL;
 466                         SFXGE_ADAPTER_UNLOCK(sc);
 467                         break;
 468                 }
 469
 470                 /* Check request before any changes */
 471                 if ((capchg_mask & IFCAP_TSO4) &&
 472                     (reqcap & (IFCAP_TSO4 | IFCAP_TXCSUM)) == IFCAP_TSO4) {
 473                         error = EAGAIN;
 474                         SFXGE_ADAPTER_UNLOCK(sc);
 475                         if_printf(ifp, "enable txcsum before tso4\n");
 476                         break;
 477                 }
 478                 if ((capchg_mask & IFCAP_TSO6) &&
 479                     (reqcap & (IFCAP_TSO6 | IFCAP_TXCSUM_IPV6)) == IFCAP_TSO6) {
 480                         error = EAGAIN;
 481                         SFXGE_ADAPTER_UNLOCK(sc);
 482                         if_printf(ifp, "enable txcsum6 before tso6\n");
 483                         break;
 484                 }
 485
 486                 if (reqcap & IFCAP_TXCSUM) {
 487                         ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP);
 488                 } else {
 489                         ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP);
 490                         if (reqcap & IFCAP_TSO4) {
 491                                 reqcap &= ~IFCAP_TSO4;
 492                                 if_printf(ifp,
 493                                     "tso4 disabled due to -txcsum\n");
 494                         }
 495                 }
 496                 if (reqcap & IFCAP_TXCSUM_IPV6) {
 497                         ifp->if_hwassist |= (CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
 498                 } else {
 499                         ifp->if_hwassist &= ~(CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
 500                         if (reqcap & IFCAP_TSO6) {
 501                                 reqcap &= ~IFCAP_TSO6;
 502                                 if_printf(ifp,
 503                                     "tso6 disabled due to -txcsum6\n");
 504                         }
 505                 }
 506
 507                 /*
 508                  * The kernel takes both IFCAP_TSOx and CSUM_TSO into
 509                  * account before using TSO. So, we do not touch
 510                  * checksum flags when IFCAP_TSOx is modified.
 511                  * Note that CSUM_TSO is (CSUM_IP_TSO|CSUM_IP6_TSO),
 512                  * but both bits are set in IPv4 and IPv6 mbufs.
 513                  */
 514
 515                 ifp->if_capenable = reqcap;
 516
 517                 SFXGE_ADAPTER_UNLOCK(sc);
 518                 break;
 519         }
 520         case SIOCSIFMEDIA:
 521         case SIOCGIFMEDIA:
 522                 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
 523                 break;
 524 #ifdef SIOCGI2C
 525         case SIOCGI2C:
 526         {
 527                 struct ifi2creq i2c;
 528
 529                 error = copyin(ifr_data_get_ptr(ifr), &i2c, sizeof(i2c));
 530                 if (error != 0)
 531                         break;
 532
 533                 if (i2c.len > sizeof(i2c.data)) {
 534                         error = EINVAL;
 535                         break;
 536                 }
 537
 538                 SFXGE_ADAPTER_LOCK(sc);
 539                 error = efx_phy_module_get_info(sc->enp, i2c.dev_addr,
 540                                                 i2c.offset, i2c.len,
 541                                                 &i2c.data[0]);
 542                 SFXGE_ADAPTER_UNLOCK(sc);
 543                 if (error == 0)
 544                         error = copyout(&i2c, ifr_data_get_ptr(ifr),
 545                             sizeof(i2c));
 546                 break;
 547         }
 548 #endif
 549         case SIOCGPRIVATE_0:
 550                 error = priv_check(curthread, PRIV_DRIVER);
 551                 if (error != 0)
 552                         break;
 553                 error = copyin(ifr_data_get_ptr(ifr), &ioc, sizeof(ioc));
 554                 if (error != 0)
 555                         return (error);
 556                 error = sfxge_private_ioctl(sc, &ioc);
 557                 if (error == 0) {
 558                         error = copyout(&ioc, ifr_data_get_ptr(ifr),
 559                             sizeof(ioc));
 560                 }
 561                 break;
 562         default:
 563                 error = ether_ioctl(ifp, command, data);
 564         }
 565
 566         return (error);
 567 }
 568
 569 static void
 570 sfxge_ifnet_fini(struct ifnet *ifp)
 571 {
 572         struct sfxge_softc *sc = ifp->if_softc;
 573
 574         SFXGE_ADAPTER_LOCK(sc);
 575         sfxge_stop(sc);
 576         SFXGE_ADAPTER_UNLOCK(sc);
 577
 578         ifmedia_removeall(&sc->media);
 579         ether_ifdetach(ifp);
 580         if_free(ifp);
 581 }
 582
 583 static int
 584 sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc)
 585 {
 586         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp);
 587         device_t dev;
 588         int rc;
 589
 590         dev = sc->dev;
 591         sc->ifnet = ifp;
 592
 593         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 594         ifp->if_init = sfxge_if_init;
 595         ifp->if_softc = sc;
 596         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 597         ifp->if_ioctl = sfxge_if_ioctl;
 598
 599         ifp->if_capabilities = SFXGE_CAP;
 600         ifp->if_capenable = SFXGE_CAP_ENABLE;
 601         ifp->if_hw_tsomax = SFXGE_TSO_MAX_SIZE;
 602         ifp->if_hw_tsomaxsegcount = SFXGE_TX_MAPPING_MAX_SEG;
 603         ifp->if_hw_tsomaxsegsize = PAGE_SIZE;
 604
 605 #ifdef SFXGE_LRO
 606         ifp->if_capabilities |= IFCAP_LRO;
 607         ifp->if_capenable |= IFCAP_LRO;
 608 #endif
 609
 610         if (encp->enc_hw_tx_insert_vlan_enabled) {
 611                 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING;
 612                 ifp->if_capenable |= IFCAP_VLAN_HWTAGGING;
 613         }
 614         ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO |
 615                            CSUM_TCP_IPV6 | CSUM_UDP_IPV6;
 616
 617         ether_ifattach(ifp, encp->enc_mac_addr);
 618
 619         ifp->if_transmit = sfxge_if_transmit;
 620         ifp->if_qflush = sfxge_if_qflush;
 621
 622         ifp->if_get_counter = sfxge_get_counter;
 623
 624         DBGPRINT(sc->dev, "ifmedia_init");
 625         if ((rc = sfxge_port_ifmedia_init(sc)) != 0)
 626                 goto fail;
 627
 628         return (0);
 629
 630 fail:
 631         ether_ifdetach(sc->ifnet);
 632         return (rc);
 633 }
 634
 635 void
 636 sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp)
 637 {
 638         KASSERT(sc->buffer_table_next + n <=
 639                 efx_nic_cfg_get(sc->enp)->enc_buftbl_limit,
 640                 ("buffer table full"));
 641
 642         *idp = sc->buffer_table_next;
 643         sc->buffer_table_next += n;
 644 }
 645
 646 static int
 647 sfxge_bar_init(struct sfxge_softc *sc)
 648 {
 649         efsys_bar_t *esbp = &sc->bar;
 650
 651         esbp->esb_rid = PCIR_BAR(sc->mem_bar);
 652         if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
 653             &esbp->esb_rid, RF_ACTIVE)) == NULL) {
 654                 device_printf(sc->dev, "Cannot allocate BAR region %d\n",
 655                     sc->mem_bar);
 656                 return (ENXIO);
 657         }
 658         esbp->esb_tag = rman_get_bustag(esbp->esb_res);
 659         esbp->esb_handle = rman_get_bushandle(esbp->esb_res);
 660
 661         SFXGE_BAR_LOCK_INIT(esbp, device_get_nameunit(sc->dev));
 662
 663         return (0);
 664 }
 665
 666 static void
 667 sfxge_bar_fini(struct sfxge_softc *sc)
 668 {
 669         efsys_bar_t *esbp = &sc->bar;
 670
 671         bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid,
 672             esbp->esb_res);
 673         SFXGE_BAR_LOCK_DESTROY(esbp);
 674 }
 675
 676 static int
 677 sfxge_create(struct sfxge_softc *sc)
 678 {
 679         device_t dev;
 680         efx_nic_t *enp;
 681         int error;
 682         char rss_param_name[sizeof(SFXGE_PARAM(%d.max_rss_channels))];
 683 #if EFSYS_OPT_MCDI_LOGGING
 684         char mcdi_log_param_name[sizeof(SFXGE_PARAM(%d.mcdi_logging))];
 685 #endif
 686
 687         dev = sc->dev;
 688
 689         SFXGE_ADAPTER_LOCK_INIT(sc, device_get_nameunit(sc->dev));
 690
 691         sc->max_rss_channels = 0;
 692         snprintf(rss_param_name, sizeof(rss_param_name),
 693                  SFXGE_PARAM(%d.max_rss_channels),
 694                  (int)device_get_unit(dev));
 695         TUNABLE_INT_FETCH(rss_param_name, &sc->max_rss_channels);
 696 #if EFSYS_OPT_MCDI_LOGGING
 697         sc->mcdi_logging = sfxge_mcdi_logging;
 698         snprintf(mcdi_log_param_name, sizeof(mcdi_log_param_name),
 699                  SFXGE_PARAM(%d.mcdi_logging),
 700                  (int)device_get_unit(dev));
 701         TUNABLE_INT_FETCH(mcdi_log_param_name, &sc->mcdi_logging);
 702 #endif
 703
 704         sc->stats_node = SYSCTL_ADD_NODE(device_get_sysctl_ctx(dev),
 705             SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
 706             CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Statistics");
 707         if (sc->stats_node == NULL) {
 708                 error = ENOMEM;
 709                 goto fail;
 710         }
 711
 712         TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc);
 713
 714         (void) pci_enable_busmaster(dev);
 715
 716         /* Initialize DMA mappings. */
 717         DBGPRINT(sc->dev, "dma_init...");
 718         if ((error = sfxge_dma_init(sc)) != 0)
 719                 goto fail;
 720
 721         error = efx_family(pci_get_vendor(dev), pci_get_device(dev),
 722             &sc->family, &sc->mem_bar);
 723         KASSERT(error == 0, ("Family should be filtered by sfxge_probe()"));
 724
 725         /* Map the device registers. */
 726         DBGPRINT(sc->dev, "bar_init...");
 727         if ((error = sfxge_bar_init(sc)) != 0)
 728                 goto fail;
 729
 730         DBGPRINT(sc->dev, "nic_create...");
 731
 732         /* Create the common code nic object. */
 733         SFXGE_EFSYS_LOCK_INIT(&sc->enp_lock,
 734                               device_get_nameunit(sc->dev), "nic");
 735         if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc,
 736             &sc->bar, &sc->enp_lock, &enp)) != 0)
 737                 goto fail3;
 738         sc->enp = enp;
 739
 740         /* Initialize MCDI to talk to the microcontroller. */
 741         DBGPRINT(sc->dev, "mcdi_init...");
 742         if ((error = sfxge_mcdi_init(sc)) != 0)
 743                 goto fail4;
 744
 745         /* Probe the NIC and build the configuration data area. */
 746         DBGPRINT(sc->dev, "nic_probe...");
 747         if ((error = efx_nic_probe(enp, EFX_FW_VARIANT_DONT_CARE)) != 0)
 748                 goto fail5;
 749
 750         if (!ISP2(sfxge_rx_ring_entries) ||
 751             (sfxge_rx_ring_entries < EFX_RXQ_MINNDESCS) ||
 752             (sfxge_rx_ring_entries > EFX_RXQ_MAXNDESCS)) {
 753                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 754                     SFXGE_PARAM_RX_RING, sfxge_rx_ring_entries,
 755                     EFX_RXQ_MINNDESCS, EFX_RXQ_MAXNDESCS);
 756                 error = EINVAL;
 757                 goto fail_rx_ring_entries;
 758         }
 759         sc->rxq_entries = sfxge_rx_ring_entries;
 760
 761         if (efx_nic_cfg_get(enp)->enc_features & EFX_FEATURE_TXQ_CKSUM_OP_DESC)
 762                 sc->txq_dynamic_cksum_toggle_supported = B_TRUE;
 763         else
 764                 sc->txq_dynamic_cksum_toggle_supported = B_FALSE;
 765
 766         if (!ISP2(sfxge_tx_ring_entries) ||
 767             (sfxge_tx_ring_entries < EFX_TXQ_MINNDESCS) ||
 768             (sfxge_tx_ring_entries > efx_nic_cfg_get(enp)->enc_txq_max_ndescs)) {
 769                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 770                     SFXGE_PARAM_TX_RING, sfxge_tx_ring_entries,
 771                     EFX_TXQ_MINNDESCS, efx_nic_cfg_get(enp)->enc_txq_max_ndescs);
 772                 error = EINVAL;
 773                 goto fail_tx_ring_entries;
 774         }
 775         sc->txq_entries = sfxge_tx_ring_entries;
 776
 777         SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
 778                           SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 779                           OID_AUTO, "version", CTLFLAG_RD,
 780                           SFXGE_VERSION_STRING, 0,
 781                           "Driver version");
 782
 783         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 784                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 785                         OID_AUTO, "phy_type", CTLFLAG_RD,
 786                         NULL, efx_nic_cfg_get(enp)->enc_phy_type,
 787                         "PHY type");
 788
 789         /* Initialize the NVRAM. */
 790         DBGPRINT(sc->dev, "nvram_init...");
 791         if ((error = efx_nvram_init(enp)) != 0)
 792                 goto fail6;
 793
 794         /* Initialize the VPD. */
 795         DBGPRINT(sc->dev, "vpd_init...");
 796         if ((error = efx_vpd_init(enp)) != 0)
 797                 goto fail7;
 798
 799         efx_mcdi_new_epoch(enp);
 800
 801         /* Reset the NIC. */
 802         DBGPRINT(sc->dev, "nic_reset...");
 803         if ((error = efx_nic_reset(enp)) != 0)
 804                 goto fail8;
 805
 806         /* Initialize buffer table allocation. */
 807         sc->buffer_table_next = 0;
 808
 809         /*
 810          * Guarantee minimum and estimate maximum number of event queues
 811          * to take it into account when MSI-X interrupts are allocated.
 812          * It initializes NIC and keeps it initialized on success.
 813          */
 814         if ((error = sfxge_estimate_rsrc_limits(sc)) != 0)
 815                 goto fail8;
 816
 817         /* Set up interrupts. */
 818         DBGPRINT(sc->dev, "intr_init...");
 819         if ((error = sfxge_intr_init(sc)) != 0)
 820                 goto fail9;
 821
 822         /* Initialize event processing state. */
 823         DBGPRINT(sc->dev, "ev_init...");
 824         if ((error = sfxge_ev_init(sc)) != 0)
 825                 goto fail11;
 826
 827         /* Initialize port state. */
 828         DBGPRINT(sc->dev, "port_init...");
 829         if ((error = sfxge_port_init(sc)) != 0)
 830                 goto fail12;
 831
 832         /* Initialize receive state. */
 833         DBGPRINT(sc->dev, "rx_init...");
 834         if ((error = sfxge_rx_init(sc)) != 0)
 835                 goto fail13;
 836
 837         /* Initialize transmit state. */
 838         DBGPRINT(sc->dev, "tx_init...");
 839         if ((error = sfxge_tx_init(sc)) != 0)
 840                 goto fail14;
 841
 842         sc->init_state = SFXGE_INITIALIZED;
 843
 844         DBGPRINT(sc->dev, "success");
 845         return (0);
 846
 847 fail14:
 848         sfxge_rx_fini(sc);
 849
 850 fail13:
 851         sfxge_port_fini(sc);
 852
 853 fail12:
 854         sfxge_ev_fini(sc);
 855
 856 fail11:
 857         sfxge_intr_fini(sc);
 858
 859 fail9:
 860         efx_nic_fini(sc->enp);
 861
 862 fail8:
 863         efx_vpd_fini(enp);
 864
 865 fail7:
 866         efx_nvram_fini(enp);
 867
 868 fail6:
 869 fail_tx_ring_entries:
 870 fail_rx_ring_entries:
 871         efx_nic_unprobe(enp);
 872
 873 fail5:
 874         sfxge_mcdi_fini(sc);
 875
 876 fail4:
 877         sc->enp = NULL;
 878         efx_nic_destroy(enp);
 879         SFXGE_EFSYS_LOCK_DESTROY(&sc->enp_lock);
 880
 881 fail3:
 882         sfxge_bar_fini(sc);
 883         (void) pci_disable_busmaster(sc->dev);
 884
 885 fail:
 886         DBGPRINT(sc->dev, "failed %d", error);
 887         sc->dev = NULL;
 888         SFXGE_ADAPTER_LOCK_DESTROY(sc);
 889         return (error);
 890 }
 891
 892 static void
 893 sfxge_destroy(struct sfxge_softc *sc)
 894 {
 895         efx_nic_t *enp;
 896
 897         /* Clean up transmit state. */
 898         sfxge_tx_fini(sc);
 899
 900         /* Clean up receive state. */
 901         sfxge_rx_fini(sc);
 902
 903         /* Clean up port state. */
 904         sfxge_port_fini(sc);
 905
 906         /* Clean up event processing state. */
 907         sfxge_ev_fini(sc);
 908
 909         /* Clean up interrupts. */
 910         sfxge_intr_fini(sc);
 911
 912         /* Tear down common code subsystems. */
 913         efx_nic_reset(sc->enp);
 914         efx_vpd_fini(sc->enp);
 915         efx_nvram_fini(sc->enp);
 916         efx_nic_unprobe(sc->enp);
 917
 918         /* Tear down MCDI. */
 919         sfxge_mcdi_fini(sc);
 920
 921         /* Destroy common code context. */
 922         enp = sc->enp;
 923         sc->enp = NULL;
 924         efx_nic_destroy(enp);
 925
 926         /* Free DMA memory. */
 927         sfxge_dma_fini(sc);
 928
 929         /* Free mapped BARs. */
 930         sfxge_bar_fini(sc);
 931
 932         (void) pci_disable_busmaster(sc->dev);
 933
 934         taskqueue_drain(taskqueue_thread, &sc->task_reset);
 935
 936         /* Destroy the softc lock. */
 937         SFXGE_ADAPTER_LOCK_DESTROY(sc);
 938 }
 939
 940 static int
 941 sfxge_vpd_handler(SYSCTL_HANDLER_ARGS)
 942 {
 943         struct sfxge_softc *sc = arg1;
 944         efx_vpd_value_t value;
 945         int rc;
 946
 947         value.evv_tag = arg2 >> 16;
 948         value.evv_keyword = arg2 & 0xffff;
 949         if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value))
 950             != 0)
 951                 return (rc);
 952
 953         return (SYSCTL_OUT(req, value.evv_value, value.evv_length));
 954 }
 955
 956 static void
 957 sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list,
 958                   efx_vpd_tag_t tag, const char *keyword)
 959 {
 960         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 961         efx_vpd_value_t value;
 962
 963         /* Check whether VPD tag/keyword is present */
 964         value.evv_tag = tag;
 965         value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]);
 966         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0)
 967                 return;
 968
 969         SYSCTL_ADD_PROC(ctx, list, OID_AUTO, keyword,
 970             CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_NEEDGIANT,
 971             sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]),
 972             sfxge_vpd_handler, "A", "");
 973 }
 974
 975 static int
 976 sfxge_vpd_init(struct sfxge_softc *sc)
 977 {
 978         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 979         struct sysctl_oid *vpd_node;
 980         struct sysctl_oid_list *vpd_list;
 981         char keyword[3];
 982         efx_vpd_value_t value;
 983         int rc;
 984
 985         if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0) {
 986                 /*
 987                  * Unpriviledged functions deny VPD access.
 988                  * Simply skip VPD in this case.
 989                  */
 990                 if (rc == EACCES)
 991                         goto done;
 992                 goto fail;
 993         }
 994         sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK);
 995         if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0)
 996                 goto fail2;
 997
 998         /* Copy ID (product name) into device description, and log it. */
 999         value.evv_tag = EFX_VPD_ID;
1000         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) {
1001                 value.evv_value[value.evv_length] = 0;
1002                 device_set_desc_copy(sc->dev, value.evv_value);
1003                 device_printf(sc->dev, "%s\n", value.evv_value);
1004         }
1005
1006         vpd_node = SYSCTL_ADD_NODE(ctx,
1007             SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)), OID_AUTO, "vpd",
1008             CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Vital Product Data");
1009         vpd_list = SYSCTL_CHILDREN(vpd_node);
1010
1011         /* Add sysctls for all expected and any vendor-defined keywords. */
1012         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN");
1013         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC");
1014         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN");
1015         keyword[0] = 'V';
1016         keyword[2] = 0;
1017         for (keyword[1] = '0'; keyword[1] <= '9'; keyword[1]++)
1018                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
1019         for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++)
1020                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
1021
1022 done:
1023         return (0);
1024
1025 fail2:
1026         free(sc->vpd_data, M_SFXGE);
1027 fail:
1028         return (rc);
1029 }
1030
1031 static void
1032 sfxge_vpd_fini(struct sfxge_softc *sc)
1033 {
1034         free(sc->vpd_data, M_SFXGE);
1035 }
1036
1037 static void
1038 sfxge_reset(void *arg, int npending)
1039 {
1040         struct sfxge_softc *sc;
1041         int rc;
1042         unsigned attempt;
1043
1044         (void)npending;
1045
1046         sc = (struct sfxge_softc *)arg;
1047
1048         SFXGE_ADAPTER_LOCK(sc);
1049
1050         if (sc->init_state != SFXGE_STARTED)
1051                 goto done;
1052
1053         sfxge_stop(sc);
1054         efx_nic_reset(sc->enp);
1055         for (attempt = 0; attempt < sfxge_restart_attempts; ++attempt) {
1056                 if ((rc = sfxge_start(sc)) == 0)
1057                         goto done;
1058
1059                 device_printf(sc->dev, "start on reset failed (%d)\n", rc);
1060                 DELAY(100000);
1061         }
1062
1063         device_printf(sc->dev, "reset failed; interface is now stopped\n");
1064
1065 done:
1066         SFXGE_ADAPTER_UNLOCK(sc);
1067 }
1068
1069 void
1070 sfxge_schedule_reset(struct sfxge_softc *sc)
1071 {
1072         taskqueue_enqueue(taskqueue_thread, &sc->task_reset);
1073 }
1074
1075 static int
1076 sfxge_attach(device_t dev)
1077 {
1078         struct sfxge_softc *sc;
1079         struct ifnet *ifp;
1080         int error;
1081
1082         sc = device_get_softc(dev);
1083         sc->dev = dev;
1084
1085         /* Allocate ifnet. */
1086         ifp = if_alloc(IFT_ETHER);
1087         if (ifp == NULL) {
1088                 device_printf(dev, "Couldn't allocate ifnet\n");
1089                 error = ENOMEM;
1090                 goto fail;
1091         }
1092         sc->ifnet = ifp;
1093
1094         /* Initialize hardware. */
1095         DBGPRINT(sc->dev, "create nic");
1096         if ((error = sfxge_create(sc)) != 0)
1097                 goto fail2;
1098
1099         /* Create the ifnet for the port. */
1100         DBGPRINT(sc->dev, "init ifnet");
1101         if ((error = sfxge_ifnet_init(ifp, sc)) != 0)
1102                 goto fail3;
1103
1104         DBGPRINT(sc->dev, "init vpd");
1105         if ((error = sfxge_vpd_init(sc)) != 0)
1106                 goto fail4;
1107
1108         /*
1109          * NIC is initialized inside sfxge_create() and kept inialized
1110          * to be able to initialize port to discover media types in
1111          * sfxge_ifnet_init().
1112          */
1113         efx_nic_fini(sc->enp);
1114
1115         sc->init_state = SFXGE_REGISTERED;
1116
1117         DBGPRINT(sc->dev, "success");
1118         return (0);
1119
1120 fail4:
1121         sfxge_ifnet_fini(ifp);
1122 fail3:
1123         efx_nic_fini(sc->enp);
1124         sfxge_destroy(sc);
1125
1126 fail2:
1127         if_free(sc->ifnet);
1128
1129 fail:
1130         DBGPRINT(sc->dev, "failed %d", error);
1131         return (error);
1132 }
1133
1134 static int
1135 sfxge_detach(device_t dev)
1136 {
1137         struct sfxge_softc *sc;
1138
1139         sc = device_get_softc(dev);
1140
1141         sfxge_vpd_fini(sc);
1142
1143         /* Destroy the ifnet. */
1144         sfxge_ifnet_fini(sc->ifnet);
1145
1146         /* Tear down hardware. */
1147         sfxge_destroy(sc);
1148
1149         return (0);
1150 }
1151
1152 static int
1153 sfxge_probe(device_t dev)
1154 {
1155         uint16_t pci_vendor_id;
1156         uint16_t pci_device_id;
1157         efx_family_t family;
1158         unsigned int mem_bar;
1159         int rc;
1160
1161         pci_vendor_id = pci_get_vendor(dev);
1162         pci_device_id = pci_get_device(dev);
1163
1164         DBGPRINT(dev, "PCI ID %04x:%04x", pci_vendor_id, pci_device_id);
1165         rc = efx_family(pci_vendor_id, pci_device_id, &family, &mem_bar);
1166         if (rc != 0) {
1167                 DBGPRINT(dev, "efx_family fail %d", rc);
1168                 return (ENXIO);
1169         }
1170
1171         if (family == EFX_FAMILY_SIENA) {
1172                 device_set_desc(dev, "Solarflare SFC9000 family");
1173                 return (0);
1174         }
1175
1176         if (family == EFX_FAMILY_HUNTINGTON) {
1177                 device_set_desc(dev, "Solarflare SFC9100 family");
1178                 return (0);
1179         }
1180
1181         if (family == EFX_FAMILY_MEDFORD) {
1182                 device_set_desc(dev, "Solarflare SFC9200 family");
1183                 return (0);
1184         }
1185
1186         if (family == EFX_FAMILY_MEDFORD2) {
1187                 device_set_desc(dev, "Solarflare SFC9250 family");
1188                 return (0);
1189         }
1190
1191         DBGPRINT(dev, "impossible controller family %d", family);
1192         return (ENXIO);
1193 }
1194
1195 static device_method_t sfxge_methods[] = {
1196         DEVMETHOD(device_probe,         sfxge_probe),
1197         DEVMETHOD(device_attach,        sfxge_attach),
1198         DEVMETHOD(device_detach,        sfxge_detach),
1199
1200         DEVMETHOD_END
1201 };
1202
1203 static devclass_t sfxge_devclass;
1204
1205 static driver_t sfxge_driver = {
1206         "sfxge",
1207         sfxge_methods,
1208         sizeof(struct sfxge_softc)
1209 };
1210
1211 DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0);