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 #include <sys/syslog.h>
  46
  47 #include <dev/pci/pcireg.h>
  48 #include <dev/pci/pcivar.h>
  49
  50 #include <net/ethernet.h>
  51 #include <net/if.h>
  52 #include <net/if_var.h>
  53 #include <net/if_media.h>
  54 #include <net/if_types.h>
  55
  56 #include "common/efx.h"
  57
  58 #include "sfxge.h"
  59 #include "sfxge_rx.h"
  60
  61 #define SFXGE_CAP (IFCAP_VLAN_MTU | \
  62                    IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM | IFCAP_TSO |       \
  63                    IFCAP_JUMBO_MTU | IFCAP_LRO |                        \
  64                    IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE)
  65 #define SFXGE_CAP_ENABLE SFXGE_CAP
  66 #define SFXGE_CAP_FIXED (IFCAP_VLAN_MTU | IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM | \
  67                          IFCAP_JUMBO_MTU | IFCAP_LINKSTATE)
  68
  69 MALLOC_DEFINE(M_SFXGE, "sfxge", "Solarflare 10GigE driver");
  70
  71
  72 SYSCTL_NODE(_hw, OID_AUTO, sfxge, CTLFLAG_RD, 0,
  73             "SFXGE driver parameters");
  74
  75 #define SFXGE_PARAM_RX_RING     SFXGE_PARAM(rx_ring)
  76 static int sfxge_rx_ring_entries = SFXGE_NDESCS;
  77 TUNABLE_INT(SFXGE_PARAM_RX_RING, &sfxge_rx_ring_entries);
  78 SYSCTL_INT(_hw_sfxge, OID_AUTO, rx_ring, CTLFLAG_RDTUN,
  79            &sfxge_rx_ring_entries, 0,
  80            "Maximum number of descriptors in a receive ring");
  81
  82 #define SFXGE_PARAM_TX_RING     SFXGE_PARAM(tx_ring)
  83 static int sfxge_tx_ring_entries = SFXGE_NDESCS;
  84 TUNABLE_INT(SFXGE_PARAM_TX_RING, &sfxge_tx_ring_entries);
  85 SYSCTL_INT(_hw_sfxge, OID_AUTO, tx_ring, CTLFLAG_RDTUN,
  86            &sfxge_tx_ring_entries, 0,
  87            "Maximum number of descriptors in a transmit ring");
  88
  89
  90 static void
  91 sfxge_reset(void *arg, int npending);
  92
  93 static int
  94 sfxge_start(struct sfxge_softc *sc)
  95 {
  96         int rc;
  97
  98         sx_assert(&sc->softc_lock, LA_XLOCKED);
  99
 100         if (sc->init_state == SFXGE_STARTED)
 101                 return (0);
 102
 103         if (sc->init_state != SFXGE_REGISTERED) {
 104                 rc = EINVAL;
 105                 goto fail;
 106         }
 107
 108         if ((rc = efx_nic_init(sc->enp)) != 0)
 109                 goto fail;
 110
 111         /* Start processing interrupts. */
 112         if ((rc = sfxge_intr_start(sc)) != 0)
 113                 goto fail2;
 114
 115         /* Start processing events. */
 116         if ((rc = sfxge_ev_start(sc)) != 0)
 117                 goto fail3;
 118
 119         /* Start the receiver side. */
 120         if ((rc = sfxge_rx_start(sc)) != 0)
 121                 goto fail4;
 122
 123         /* Start the transmitter side. */
 124         if ((rc = sfxge_tx_start(sc)) != 0)
 125                 goto fail5;
 126
 127         /* Fire up the port. */
 128         if ((rc = sfxge_port_start(sc)) != 0)
 129                 goto fail6;
 130
 131         sc->init_state = SFXGE_STARTED;
 132
 133         /* Tell the stack we're running. */
 134         sc->ifnet->if_drv_flags |= IFF_DRV_RUNNING;
 135         sc->ifnet->if_drv_flags &= ~IFF_DRV_OACTIVE;
 136
 137         return (0);
 138
 139 fail6:
 140         sfxge_tx_stop(sc);
 141
 142 fail5:
 143         sfxge_rx_stop(sc);
 144
 145 fail4:
 146         sfxge_ev_stop(sc);
 147
 148 fail3:
 149         sfxge_intr_stop(sc);
 150
 151 fail2:
 152         efx_nic_fini(sc->enp);
 153
 154 fail:
 155         device_printf(sc->dev, "sfxge_start: %d\n", rc);
 156
 157         return (rc);
 158 }
 159
 160 static void
 161 sfxge_if_init(void *arg)
 162 {
 163         struct sfxge_softc *sc;
 164
 165         sc = (struct sfxge_softc *)arg;
 166
 167         sx_xlock(&sc->softc_lock);
 168         (void)sfxge_start(sc);
 169         sx_xunlock(&sc->softc_lock);
 170 }
 171
 172 static void
 173 sfxge_stop(struct sfxge_softc *sc)
 174 {
 175         sx_assert(&sc->softc_lock, LA_XLOCKED);
 176
 177         if (sc->init_state != SFXGE_STARTED)
 178                 return;
 179
 180         sc->init_state = SFXGE_REGISTERED;
 181
 182         /* Stop the port. */
 183         sfxge_port_stop(sc);
 184
 185         /* Stop the transmitter. */
 186         sfxge_tx_stop(sc);
 187
 188         /* Stop the receiver. */
 189         sfxge_rx_stop(sc);
 190
 191         /* Stop processing events. */
 192         sfxge_ev_stop(sc);
 193
 194         /* Stop processing interrupts. */
 195         sfxge_intr_stop(sc);
 196
 197         efx_nic_fini(sc->enp);
 198
 199         sc->ifnet->if_drv_flags &= ~IFF_DRV_RUNNING;
 200 }
 201
 202 static int
 203 sfxge_if_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data)
 204 {
 205         struct sfxge_softc *sc;
 206         struct ifreq *ifr;
 207         int error;
 208
 209         ifr = (struct ifreq *)data;
 210         sc = ifp->if_softc;
 211         error = 0;
 212
 213         switch (command) {
 214         case SIOCSIFFLAGS:
 215                 sx_xlock(&sc->softc_lock);
 216                 if (ifp->if_flags & IFF_UP) {
 217                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 218                                 if ((ifp->if_flags ^ sc->if_flags) &
 219                                     (IFF_PROMISC | IFF_ALLMULTI)) {
 220                                         sfxge_mac_filter_set(sc);
 221                                 }
 222                         } else
 223                                 sfxge_start(sc);
 224                 } else
 225                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 226                                 sfxge_stop(sc);
 227                 sc->if_flags = ifp->if_flags;
 228                 sx_xunlock(&sc->softc_lock);
 229                 break;
 230         case SIOCSIFMTU:
 231                 if (ifr->ifr_mtu == ifp->if_mtu) {
 232                         /* Nothing to do */
 233                         error = 0;
 234                 } else if (ifr->ifr_mtu > SFXGE_MAX_MTU) {
 235                         error = EINVAL;
 236                 } else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 237                         ifp->if_mtu = ifr->ifr_mtu;
 238                         error = 0;
 239                 } else {
 240                         /* Restart required */
 241                         sx_xlock(&sc->softc_lock);
 242                         sfxge_stop(sc);
 243                         ifp->if_mtu = ifr->ifr_mtu;
 244                         error = sfxge_start(sc);
 245                         sx_xunlock(&sc->softc_lock);
 246                         if (error != 0) {
 247                                 ifp->if_flags &= ~IFF_UP;
 248                                 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
 249                                 if_down(ifp);
 250                         }
 251                 }
 252                 break;
 253         case SIOCADDMULTI:
 254         case SIOCDELMULTI:
 255                 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 256                         sfxge_mac_filter_set(sc);
 257                 break;
 258         case SIOCSIFCAP:
 259                 sx_xlock(&sc->softc_lock);
 260
 261                 /*
 262                  * The networking core already rejects attempts to
 263                  * enable capabilities we don't have.  We still have
 264                  * to reject attempts to disable capabilities that we
 265                  * can't (yet) disable.
 266                  */
 267                 if (~ifr->ifr_reqcap & SFXGE_CAP_FIXED) {
 268                         error = EINVAL;
 269                         sx_xunlock(&sc->softc_lock);
 270                         break;
 271                 }
 272
 273                 ifp->if_capenable = ifr->ifr_reqcap;
 274                 if (ifp->if_capenable & IFCAP_TXCSUM)
 275                         ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP);
 276                 else
 277                         ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP);
 278                 if (ifp->if_capenable & IFCAP_TSO)
 279                         ifp->if_hwassist |= CSUM_TSO;
 280                 else
 281                         ifp->if_hwassist &= ~CSUM_TSO;
 282
 283                 sx_xunlock(&sc->softc_lock);
 284                 break;
 285         case SIOCSIFMEDIA:
 286         case SIOCGIFMEDIA:
 287                 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
 288                 break;
 289         default:
 290                 error = ether_ioctl(ifp, command, data);
 291         }
 292
 293         return (error);
 294 }
 295
 296 static void
 297 sfxge_ifnet_fini(struct ifnet *ifp)
 298 {
 299         struct sfxge_softc *sc = ifp->if_softc;
 300
 301         sx_xlock(&sc->softc_lock);
 302         sfxge_stop(sc);
 303         sx_xunlock(&sc->softc_lock);
 304
 305         ifmedia_removeall(&sc->media);
 306         ether_ifdetach(ifp);
 307         if_free(ifp);
 308 }
 309
 310 static int
 311 sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc)
 312 {
 313         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp);
 314         device_t dev;
 315         int rc;
 316
 317         dev = sc->dev;
 318         sc->ifnet = ifp;
 319
 320         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 321         ifp->if_init = sfxge_if_init;
 322         ifp->if_softc = sc;
 323         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 324         ifp->if_ioctl = sfxge_if_ioctl;
 325
 326         ifp->if_capabilities = SFXGE_CAP;
 327         ifp->if_capenable = SFXGE_CAP_ENABLE;
 328         ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO;
 329
 330         ether_ifattach(ifp, encp->enc_mac_addr);
 331
 332 #ifdef SFXGE_HAVE_MQ
 333         ifp->if_transmit = sfxge_if_transmit;
 334         ifp->if_qflush = sfxge_if_qflush;
 335 #else
 336         ifp->if_start = sfxge_if_start;
 337         IFQ_SET_MAXLEN(&ifp->if_snd, sc->txq_entries - 1);
 338         ifp->if_snd.ifq_drv_maxlen = sc->txq_entries - 1;
 339         IFQ_SET_READY(&ifp->if_snd);
 340
 341         mtx_init(&sc->tx_lock, "txq", NULL, MTX_DEF);
 342 #endif
 343
 344         if ((rc = sfxge_port_ifmedia_init(sc)) != 0)
 345                 goto fail;
 346
 347         return (0);
 348
 349 fail:
 350         ether_ifdetach(sc->ifnet);
 351         return (rc);
 352 }
 353
 354 void
 355 sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp)
 356 {
 357         KASSERT(sc->buffer_table_next + n <=
 358                 efx_nic_cfg_get(sc->enp)->enc_buftbl_limit,
 359                 ("buffer table full"));
 360
 361         *idp = sc->buffer_table_next;
 362         sc->buffer_table_next += n;
 363 }
 364
 365 static int
 366 sfxge_bar_init(struct sfxge_softc *sc)
 367 {
 368         efsys_bar_t *esbp = &sc->bar;
 369
 370         esbp->esb_rid = PCIR_BAR(EFX_MEM_BAR);
 371         if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
 372             &esbp->esb_rid, RF_ACTIVE)) == NULL) {
 373                 device_printf(sc->dev, "Cannot allocate BAR region %d\n",
 374                     EFX_MEM_BAR);
 375                 return (ENXIO);
 376         }
 377         esbp->esb_tag = rman_get_bustag(esbp->esb_res);
 378         esbp->esb_handle = rman_get_bushandle(esbp->esb_res);
 379         mtx_init(&esbp->esb_lock, "sfxge_efsys_bar", NULL, MTX_DEF);
 380
 381         return (0);
 382 }
 383
 384 static void
 385 sfxge_bar_fini(struct sfxge_softc *sc)
 386 {
 387         efsys_bar_t *esbp = &sc->bar;
 388
 389         bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid,
 390             esbp->esb_res);
 391         mtx_destroy(&esbp->esb_lock);
 392 }
 393
 394 static int
 395 sfxge_create(struct sfxge_softc *sc)
 396 {
 397         device_t dev;
 398         efx_nic_t *enp;
 399         int error;
 400
 401         dev = sc->dev;
 402
 403         sx_init(&sc->softc_lock, "sfxge_softc");
 404
 405         sc->stats_node = SYSCTL_ADD_NODE(
 406                 device_get_sysctl_ctx(dev),
 407                 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 408                 OID_AUTO, "stats", CTLFLAG_RD, NULL, "Statistics");
 409         if (sc->stats_node == NULL) {
 410                 error = ENOMEM;
 411                 goto fail;
 412         }
 413
 414         TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc);
 415
 416         (void) pci_enable_busmaster(dev);
 417
 418         /* Initialize DMA mappings. */
 419         if ((error = sfxge_dma_init(sc)) != 0)
 420                 goto fail;
 421
 422         /* Map the device registers. */
 423         if ((error = sfxge_bar_init(sc)) != 0)
 424                 goto fail;
 425
 426         error = efx_family(pci_get_vendor(dev), pci_get_device(dev),
 427             &sc->family);
 428         KASSERT(error == 0, ("Family should be filtered by sfxge_probe()"));
 429
 430         /* Create the common code nic object. */
 431         mtx_init(&sc->enp_lock, "sfxge_nic", NULL, MTX_DEF);
 432         if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc,
 433             &sc->bar, &sc->enp_lock, &enp)) != 0)
 434                 goto fail3;
 435         sc->enp = enp;
 436
 437         if (!ISP2(sfxge_rx_ring_entries) ||
 438             !(sfxge_rx_ring_entries & EFX_RXQ_NDESCS_MASK)) {
 439                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 440                     SFXGE_PARAM_RX_RING, sfxge_rx_ring_entries,
 441                     EFX_RXQ_MINNDESCS, EFX_RXQ_MAXNDESCS);
 442                 error = EINVAL;
 443                 goto fail_rx_ring_entries;
 444         }
 445         sc->rxq_entries = sfxge_rx_ring_entries;
 446
 447         if (!ISP2(sfxge_tx_ring_entries) ||
 448             !(sfxge_tx_ring_entries & EFX_TXQ_NDESCS_MASK)) {
 449                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 450                     SFXGE_PARAM_TX_RING, sfxge_tx_ring_entries,
 451                     EFX_TXQ_MINNDESCS, EFX_TXQ_MAXNDESCS);
 452                 error = EINVAL;
 453                 goto fail_tx_ring_entries;
 454         }
 455         sc->txq_entries = sfxge_tx_ring_entries;
 456
 457         /* Initialize MCDI to talk to the microcontroller. */
 458         if ((error = sfxge_mcdi_init(sc)) != 0)
 459                 goto fail4;
 460
 461         /* Probe the NIC and build the configuration data area. */
 462         if ((error = efx_nic_probe(enp)) != 0)
 463                 goto fail5;
 464
 465         /* Initialize the NVRAM. */
 466         if ((error = efx_nvram_init(enp)) != 0)
 467                 goto fail6;
 468
 469         /* Initialize the VPD. */
 470         if ((error = efx_vpd_init(enp)) != 0)
 471                 goto fail7;
 472
 473         /* Reset the NIC. */
 474         if ((error = efx_nic_reset(enp)) != 0)
 475                 goto fail8;
 476
 477         /* Initialize buffer table allocation. */
 478         sc->buffer_table_next = 0;
 479
 480         /* Set up interrupts. */
 481         if ((error = sfxge_intr_init(sc)) != 0)
 482                 goto fail8;
 483
 484         /* Initialize event processing state. */
 485         if ((error = sfxge_ev_init(sc)) != 0)
 486                 goto fail11;
 487
 488         /* Initialize receive state. */
 489         if ((error = sfxge_rx_init(sc)) != 0)
 490                 goto fail12;
 491
 492         /* Initialize transmit state. */
 493         if ((error = sfxge_tx_init(sc)) != 0)
 494                 goto fail13;
 495
 496         /* Initialize port state. */
 497         if ((error = sfxge_port_init(sc)) != 0)
 498                 goto fail14;
 499
 500         sc->init_state = SFXGE_INITIALIZED;
 501
 502         return (0);
 503
 504 fail14:
 505         sfxge_tx_fini(sc);
 506
 507 fail13:
 508         sfxge_rx_fini(sc);
 509
 510 fail12:
 511         sfxge_ev_fini(sc);
 512
 513 fail11:
 514         sfxge_intr_fini(sc);
 515
 516 fail8:
 517         efx_vpd_fini(enp);
 518
 519 fail7:
 520         efx_nvram_fini(enp);
 521
 522 fail6:
 523         efx_nic_unprobe(enp);
 524
 525 fail5:
 526         sfxge_mcdi_fini(sc);
 527
 528 fail4:
 529 fail_tx_ring_entries:
 530 fail_rx_ring_entries:
 531         sc->enp = NULL;
 532         efx_nic_destroy(enp);
 533         mtx_destroy(&sc->enp_lock);
 534
 535 fail3:
 536         sfxge_bar_fini(sc);
 537         (void) pci_disable_busmaster(sc->dev);
 538
 539 fail:
 540         sc->dev = NULL;
 541         sx_destroy(&sc->softc_lock);
 542         return (error);
 543 }
 544
 545 static void
 546 sfxge_destroy(struct sfxge_softc *sc)
 547 {
 548         efx_nic_t *enp;
 549
 550         /* Clean up port state. */
 551         sfxge_port_fini(sc);
 552
 553         /* Clean up transmit state. */
 554         sfxge_tx_fini(sc);
 555
 556         /* Clean up receive state. */
 557         sfxge_rx_fini(sc);
 558
 559         /* Clean up event processing state. */
 560         sfxge_ev_fini(sc);
 561
 562         /* Clean up interrupts. */
 563         sfxge_intr_fini(sc);
 564
 565         /* Tear down common code subsystems. */
 566         efx_nic_reset(sc->enp);
 567         efx_vpd_fini(sc->enp);
 568         efx_nvram_fini(sc->enp);
 569         efx_nic_unprobe(sc->enp);
 570
 571         /* Tear down MCDI. */
 572         sfxge_mcdi_fini(sc);
 573
 574         /* Destroy common code context. */
 575         enp = sc->enp;
 576         sc->enp = NULL;
 577         efx_nic_destroy(enp);
 578
 579         /* Free DMA memory. */
 580         sfxge_dma_fini(sc);
 581
 582         /* Free mapped BARs. */
 583         sfxge_bar_fini(sc);
 584
 585         (void) pci_disable_busmaster(sc->dev);
 586
 587         taskqueue_drain(taskqueue_thread, &sc->task_reset);
 588
 589         /* Destroy the softc lock. */
 590         sx_destroy(&sc->softc_lock);
 591 }
 592
 593 static int
 594 sfxge_vpd_handler(SYSCTL_HANDLER_ARGS)
 595 {
 596         struct sfxge_softc *sc = arg1;
 597         efx_vpd_value_t value;
 598         int rc;
 599
 600         value.evv_tag = arg2 >> 16;
 601         value.evv_keyword = arg2 & 0xffff;
 602         if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value))
 603             != 0)
 604                 return (rc);
 605
 606         return (SYSCTL_OUT(req, value.evv_value, value.evv_length));
 607 }
 608
 609 static void
 610 sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list,
 611                   efx_vpd_tag_t tag, const char *keyword)
 612 {
 613         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 614         efx_vpd_value_t value;
 615
 616         /* Check whether VPD tag/keyword is present */
 617         value.evv_tag = tag;
 618         value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]);
 619         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0)
 620                 return;
 621
 622         SYSCTL_ADD_PROC(
 623                 ctx, list, OID_AUTO, keyword, CTLTYPE_STRING|CTLFLAG_RD,
 624                 sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]),
 625                 sfxge_vpd_handler, "A", "");
 626 }
 627
 628 static int
 629 sfxge_vpd_init(struct sfxge_softc *sc)
 630 {
 631         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 632         struct sysctl_oid *vpd_node;
 633         struct sysctl_oid_list *vpd_list;
 634         char keyword[3];
 635         efx_vpd_value_t value;
 636         int rc;
 637
 638         if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0)
 639                 goto fail;
 640         sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK);
 641         if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0)
 642                 goto fail2;
 643
 644         /* Copy ID (product name) into device description, and log it. */
 645         value.evv_tag = EFX_VPD_ID;
 646         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) {
 647                 value.evv_value[value.evv_length] = 0;
 648                 device_set_desc_copy(sc->dev, value.evv_value);
 649                 device_printf(sc->dev, "%s\n", value.evv_value);
 650         }
 651
 652         vpd_node = SYSCTL_ADD_NODE(
 653                 ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)),
 654                 OID_AUTO, "vpd", CTLFLAG_RD, NULL, "Vital Product Data");
 655         vpd_list = SYSCTL_CHILDREN(vpd_node);
 656
 657         /* Add sysctls for all expected and any vendor-defined keywords. */
 658         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN");
 659         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC");
 660         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN");
 661         keyword[0] = 'V';
 662         keyword[2] = 0;
 663         for (keyword[1] = '0'; keyword[1] <= '9'; keyword[1]++)
 664                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 665         for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++)
 666                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 667
 668         return (0);
 669
 670 fail2:
 671         free(sc->vpd_data, M_SFXGE);
 672 fail:
 673         return (rc);
 674 }
 675
 676 static void
 677 sfxge_vpd_fini(struct sfxge_softc *sc)
 678 {
 679         free(sc->vpd_data, M_SFXGE);
 680 }
 681
 682 static void
 683 sfxge_reset(void *arg, int npending)
 684 {
 685         struct sfxge_softc *sc;
 686         int rc;
 687
 688         (void)npending;
 689
 690         sc = (struct sfxge_softc *)arg;
 691
 692         sx_xlock(&sc->softc_lock);
 693
 694         if (sc->init_state != SFXGE_STARTED)
 695                 goto done;
 696
 697         sfxge_stop(sc);
 698         efx_nic_reset(sc->enp);
 699         if ((rc = sfxge_start(sc)) != 0)
 700                 device_printf(sc->dev,
 701                               "reset failed (%d); interface is now stopped\n",
 702                               rc);
 703
 704 done:
 705         sx_xunlock(&sc->softc_lock);
 706 }
 707
 708 void
 709 sfxge_schedule_reset(struct sfxge_softc *sc)
 710 {
 711         taskqueue_enqueue(taskqueue_thread, &sc->task_reset);
 712 }
 713
 714 static int
 715 sfxge_attach(device_t dev)
 716 {
 717         struct sfxge_softc *sc;
 718         struct ifnet *ifp;
 719         int error;
 720
 721         sc = device_get_softc(dev);
 722         sc->dev = dev;
 723
 724         /* Allocate ifnet. */
 725         ifp = if_alloc(IFT_ETHER);
 726         if (ifp == NULL) {
 727                 device_printf(dev, "Couldn't allocate ifnet\n");
 728                 error = ENOMEM;
 729                 goto fail;
 730         }
 731         sc->ifnet = ifp;
 732
 733         /* Initialize hardware. */
 734         if ((error = sfxge_create(sc)) != 0)
 735                 goto fail2;
 736
 737         /* Create the ifnet for the port. */
 738         if ((error = sfxge_ifnet_init(ifp, sc)) != 0)
 739                 goto fail3;
 740
 741         if ((error = sfxge_vpd_init(sc)) != 0)
 742                 goto fail4;
 743
 744         sc->init_state = SFXGE_REGISTERED;
 745
 746         return (0);
 747
 748 fail4:
 749         sfxge_ifnet_fini(ifp);
 750 fail3:
 751         sfxge_destroy(sc);
 752
 753 fail2:
 754         if_free(sc->ifnet);
 755
 756 fail:
 757         return (error);
 758 }
 759
 760 static int
 761 sfxge_detach(device_t dev)
 762 {
 763         struct sfxge_softc *sc;
 764
 765         sc = device_get_softc(dev);
 766
 767         sfxge_vpd_fini(sc);
 768
 769         /* Destroy the ifnet. */
 770         sfxge_ifnet_fini(sc->ifnet);
 771
 772         /* Tear down hardware. */
 773         sfxge_destroy(sc);
 774
 775         return (0);
 776 }
 777
 778 static int
 779 sfxge_probe(device_t dev)
 780 {
 781         uint16_t pci_vendor_id;
 782         uint16_t pci_device_id;
 783         efx_family_t family;
 784         int rc;
 785
 786         pci_vendor_id = pci_get_vendor(dev);
 787         pci_device_id = pci_get_device(dev);
 788
 789         rc = efx_family(pci_vendor_id, pci_device_id, &family);
 790         if (rc != 0)
 791                 return (ENXIO);
 792
 793         KASSERT(family == EFX_FAMILY_SIENA, ("impossible controller family"));
 794         device_set_desc(dev, "Solarflare SFC9000 family");
 795         return (0);
 796 }
 797
 798 static device_method_t sfxge_methods[] = {
 799         DEVMETHOD(device_probe,         sfxge_probe),
 800         DEVMETHOD(device_attach,        sfxge_attach),
 801         DEVMETHOD(device_detach,        sfxge_detach),
 802
 803         DEVMETHOD_END
 804 };
 805
 806 static devclass_t sfxge_devclass;
 807
 808 static driver_t sfxge_driver = {
 809         "sfxge",
 810         sfxge_methods,
 811         sizeof(struct sfxge_softc)
 812 };
 813
 814 DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0);