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 #include "sfxge_version.h"
  61
  62 #define SFXGE_CAP (IFCAP_VLAN_MTU | IFCAP_VLAN_HWCSUM |                 \
  63                    IFCAP_RXCSUM | IFCAP_TXCSUM | IFCAP_TSO |            \
  64                    IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6 |              \
  65                    IFCAP_JUMBO_MTU | IFCAP_LRO |                        \
  66                    IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE | IFCAP_HWSTATS)
  67 #define SFXGE_CAP_ENABLE SFXGE_CAP
  68 #define SFXGE_CAP_FIXED (IFCAP_VLAN_MTU | IFCAP_RXCSUM | IFCAP_VLAN_HWCSUM | \
  69                          IFCAP_RXCSUM_IPV6 |                            \
  70                          IFCAP_JUMBO_MTU | IFCAP_LINKSTATE | IFCAP_HWSTATS)
  71
  72 MALLOC_DEFINE(M_SFXGE, "sfxge", "Solarflare 10GigE driver");
  73
  74
  75 SYSCTL_NODE(_hw, OID_AUTO, sfxge, CTLFLAG_RD, 0,
  76             "SFXGE driver parameters");
  77
  78 #define SFXGE_PARAM_RX_RING     SFXGE_PARAM(rx_ring)
  79 static int sfxge_rx_ring_entries = SFXGE_NDESCS;
  80 TUNABLE_INT(SFXGE_PARAM_RX_RING, &sfxge_rx_ring_entries);
  81 SYSCTL_INT(_hw_sfxge, OID_AUTO, rx_ring, CTLFLAG_RDTUN,
  82            &sfxge_rx_ring_entries, 0,
  83            "Maximum number of descriptors in a receive ring");
  84
  85 #define SFXGE_PARAM_TX_RING     SFXGE_PARAM(tx_ring)
  86 static int sfxge_tx_ring_entries = SFXGE_NDESCS;
  87 TUNABLE_INT(SFXGE_PARAM_TX_RING, &sfxge_tx_ring_entries);
  88 SYSCTL_INT(_hw_sfxge, OID_AUTO, tx_ring, CTLFLAG_RDTUN,
  89            &sfxge_tx_ring_entries, 0,
  90            "Maximum number of descriptors in a transmit ring");
  91
  92
  93 static void
  94 sfxge_reset(void *arg, int npending);
  95
  96 static int
  97 sfxge_start(struct sfxge_softc *sc)
  98 {
  99         int rc;
 100
 101         SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc);
 102
 103         if (sc->init_state == SFXGE_STARTED)
 104                 return (0);
 105
 106         if (sc->init_state != SFXGE_REGISTERED) {
 107                 rc = EINVAL;
 108                 goto fail;
 109         }
 110
 111         if ((rc = efx_nic_init(sc->enp)) != 0)
 112                 goto fail;
 113
 114         /* Start processing interrupts. */
 115         if ((rc = sfxge_intr_start(sc)) != 0)
 116                 goto fail2;
 117
 118         /* Start processing events. */
 119         if ((rc = sfxge_ev_start(sc)) != 0)
 120                 goto fail3;
 121
 122         /* Start the receiver side. */
 123         if ((rc = sfxge_rx_start(sc)) != 0)
 124                 goto fail4;
 125
 126         /* Start the transmitter side. */
 127         if ((rc = sfxge_tx_start(sc)) != 0)
 128                 goto fail5;
 129
 130         /* Fire up the port. */
 131         if ((rc = sfxge_port_start(sc)) != 0)
 132                 goto fail6;
 133
 134         sc->init_state = SFXGE_STARTED;
 135
 136         /* Tell the stack we're running. */
 137         sc->ifnet->if_drv_flags |= IFF_DRV_RUNNING;
 138         sc->ifnet->if_drv_flags &= ~IFF_DRV_OACTIVE;
 139
 140         return (0);
 141
 142 fail6:
 143         sfxge_tx_stop(sc);
 144
 145 fail5:
 146         sfxge_rx_stop(sc);
 147
 148 fail4:
 149         sfxge_ev_stop(sc);
 150
 151 fail3:
 152         sfxge_intr_stop(sc);
 153
 154 fail2:
 155         efx_nic_fini(sc->enp);
 156
 157 fail:
 158         device_printf(sc->dev, "sfxge_start: %d\n", rc);
 159
 160         return (rc);
 161 }
 162
 163 static void
 164 sfxge_if_init(void *arg)
 165 {
 166         struct sfxge_softc *sc;
 167
 168         sc = (struct sfxge_softc *)arg;
 169
 170         SFXGE_ADAPTER_LOCK(sc);
 171         (void)sfxge_start(sc);
 172         SFXGE_ADAPTER_UNLOCK(sc);
 173 }
 174
 175 static void
 176 sfxge_stop(struct sfxge_softc *sc)
 177 {
 178         SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc);
 179
 180         if (sc->init_state != SFXGE_STARTED)
 181                 return;
 182
 183         sc->init_state = SFXGE_REGISTERED;
 184
 185         /* Stop the port. */
 186         sfxge_port_stop(sc);
 187
 188         /* Stop the transmitter. */
 189         sfxge_tx_stop(sc);
 190
 191         /* Stop the receiver. */
 192         sfxge_rx_stop(sc);
 193
 194         /* Stop processing events. */
 195         sfxge_ev_stop(sc);
 196
 197         /* Stop processing interrupts. */
 198         sfxge_intr_stop(sc);
 199
 200         efx_nic_fini(sc->enp);
 201
 202         sc->ifnet->if_drv_flags &= ~IFF_DRV_RUNNING;
 203 }
 204
 205 static int
 206 sfxge_if_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data)
 207 {
 208         struct sfxge_softc *sc;
 209         struct ifreq *ifr;
 210         int error;
 211
 212         ifr = (struct ifreq *)data;
 213         sc = ifp->if_softc;
 214         error = 0;
 215
 216         switch (command) {
 217         case SIOCSIFFLAGS:
 218                 SFXGE_ADAPTER_LOCK(sc);
 219                 if (ifp->if_flags & IFF_UP) {
 220                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 221                                 if ((ifp->if_flags ^ sc->if_flags) &
 222                                     (IFF_PROMISC | IFF_ALLMULTI)) {
 223                                         sfxge_mac_filter_set(sc);
 224                                 }
 225                         } else
 226                                 sfxge_start(sc);
 227                 } else
 228                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 229                                 sfxge_stop(sc);
 230                 sc->if_flags = ifp->if_flags;
 231                 SFXGE_ADAPTER_UNLOCK(sc);
 232                 break;
 233         case SIOCSIFMTU:
 234                 if (ifr->ifr_mtu == ifp->if_mtu) {
 235                         /* Nothing to do */
 236                         error = 0;
 237                 } else if (ifr->ifr_mtu > SFXGE_MAX_MTU) {
 238                         error = EINVAL;
 239                 } else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 240                         ifp->if_mtu = ifr->ifr_mtu;
 241                         error = 0;
 242                 } else {
 243                         /* Restart required */
 244                         SFXGE_ADAPTER_LOCK(sc);
 245                         sfxge_stop(sc);
 246                         ifp->if_mtu = ifr->ifr_mtu;
 247                         error = sfxge_start(sc);
 248                         SFXGE_ADAPTER_UNLOCK(sc);
 249                         if (error != 0) {
 250                                 ifp->if_flags &= ~IFF_UP;
 251                                 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
 252                                 if_down(ifp);
 253                         }
 254                 }
 255                 break;
 256         case SIOCADDMULTI:
 257         case SIOCDELMULTI:
 258                 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 259                         sfxge_mac_filter_set(sc);
 260                 break;
 261         case SIOCSIFCAP:
 262                 SFXGE_ADAPTER_LOCK(sc);
 263
 264                 /*
 265                  * The networking core already rejects attempts to
 266                  * enable capabilities we don't have.  We still have
 267                  * to reject attempts to disable capabilities that we
 268                  * can't (yet) disable.
 269                  */
 270                 if (~ifr->ifr_reqcap & SFXGE_CAP_FIXED) {
 271                         error = EINVAL;
 272                         SFXGE_ADAPTER_UNLOCK(sc);
 273                         break;
 274                 }
 275
 276                 ifp->if_capenable = ifr->ifr_reqcap;
 277                 if (ifp->if_capenable & IFCAP_TXCSUM)
 278                         ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP);
 279                 else
 280                         ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP);
 281                 if (ifp->if_capenable & IFCAP_TXCSUM_IPV6)
 282                         ifp->if_hwassist |= (CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
 283                 else
 284                         ifp->if_hwassist &= ~(CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
 285                 if (ifp->if_capenable & IFCAP_TSO)
 286                         ifp->if_hwassist |= CSUM_TSO;
 287                 else
 288                         ifp->if_hwassist &= ~CSUM_TSO;
 289
 290                 SFXGE_ADAPTER_UNLOCK(sc);
 291                 break;
 292         case SIOCSIFMEDIA:
 293         case SIOCGIFMEDIA:
 294                 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
 295                 break;
 296         default:
 297                 error = ether_ioctl(ifp, command, data);
 298         }
 299
 300         return (error);
 301 }
 302
 303 static void
 304 sfxge_ifnet_fini(struct ifnet *ifp)
 305 {
 306         struct sfxge_softc *sc = ifp->if_softc;
 307
 308         SFXGE_ADAPTER_LOCK(sc);
 309         sfxge_stop(sc);
 310         SFXGE_ADAPTER_UNLOCK(sc);
 311
 312         ifmedia_removeall(&sc->media);
 313         ether_ifdetach(ifp);
 314         if_free(ifp);
 315 }
 316
 317 static int
 318 sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc)
 319 {
 320         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp);
 321         device_t dev;
 322         int rc;
 323
 324         dev = sc->dev;
 325         sc->ifnet = ifp;
 326
 327         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 328         ifp->if_init = sfxge_if_init;
 329         ifp->if_softc = sc;
 330         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 331         ifp->if_ioctl = sfxge_if_ioctl;
 332
 333         ifp->if_capabilities = SFXGE_CAP;
 334         ifp->if_capenable = SFXGE_CAP_ENABLE;
 335         ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO |
 336                            CSUM_TCP_IPV6 | CSUM_UDP_IPV6;
 337
 338         ether_ifattach(ifp, encp->enc_mac_addr);
 339
 340         ifp->if_transmit = sfxge_if_transmit;
 341         ifp->if_qflush = sfxge_if_qflush;
 342
 343         ifp->if_get_counter = sfxge_get_counter;
 344
 345         if ((rc = sfxge_port_ifmedia_init(sc)) != 0)
 346                 goto fail;
 347
 348         return (0);
 349
 350 fail:
 351         ether_ifdetach(sc->ifnet);
 352         return (rc);
 353 }
 354
 355 void
 356 sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp)
 357 {
 358         KASSERT(sc->buffer_table_next + n <=
 359                 efx_nic_cfg_get(sc->enp)->enc_buftbl_limit,
 360                 ("buffer table full"));
 361
 362         *idp = sc->buffer_table_next;
 363         sc->buffer_table_next += n;
 364 }
 365
 366 static int
 367 sfxge_bar_init(struct sfxge_softc *sc)
 368 {
 369         efsys_bar_t *esbp = &sc->bar;
 370
 371         esbp->esb_rid = PCIR_BAR(EFX_MEM_BAR);
 372         if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
 373             &esbp->esb_rid, RF_ACTIVE)) == NULL) {
 374                 device_printf(sc->dev, "Cannot allocate BAR region %d\n",
 375                     EFX_MEM_BAR);
 376                 return (ENXIO);
 377         }
 378         esbp->esb_tag = rman_get_bustag(esbp->esb_res);
 379         esbp->esb_handle = rman_get_bushandle(esbp->esb_res);
 380
 381         SFXGE_BAR_LOCK_INIT(esbp, device_get_nameunit(sc->dev));
 382
 383         return (0);
 384 }
 385
 386 static void
 387 sfxge_bar_fini(struct sfxge_softc *sc)
 388 {
 389         efsys_bar_t *esbp = &sc->bar;
 390
 391         bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid,
 392             esbp->esb_res);
 393         SFXGE_BAR_LOCK_DESTROY(esbp);
 394 }
 395
 396 static int
 397 sfxge_create(struct sfxge_softc *sc)
 398 {
 399         device_t dev;
 400         efx_nic_t *enp;
 401         int error;
 402         char rss_param_name[sizeof(SFXGE_PARAM(%d.max_rss_channels))];
 403
 404         dev = sc->dev;
 405
 406         SFXGE_ADAPTER_LOCK_INIT(sc, device_get_nameunit(sc->dev));
 407
 408         sc->max_rss_channels = 0;
 409         snprintf(rss_param_name, sizeof(rss_param_name),
 410                  SFXGE_PARAM(%d.max_rss_channels),
 411                  (int)device_get_unit(dev));
 412         TUNABLE_INT_FETCH(rss_param_name, &sc->max_rss_channels);
 413
 414         sc->stats_node = SYSCTL_ADD_NODE(
 415                 device_get_sysctl_ctx(dev),
 416                 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 417                 OID_AUTO, "stats", CTLFLAG_RD, NULL, "Statistics");
 418         if (sc->stats_node == NULL) {
 419                 error = ENOMEM;
 420                 goto fail;
 421         }
 422
 423         TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc);
 424
 425         (void) pci_enable_busmaster(dev);
 426
 427         /* Initialize DMA mappings. */
 428         if ((error = sfxge_dma_init(sc)) != 0)
 429                 goto fail;
 430
 431         /* Map the device registers. */
 432         if ((error = sfxge_bar_init(sc)) != 0)
 433                 goto fail;
 434
 435         error = efx_family(pci_get_vendor(dev), pci_get_device(dev),
 436             &sc->family);
 437         KASSERT(error == 0, ("Family should be filtered by sfxge_probe()"));
 438
 439         /* Create the common code nic object. */
 440         SFXGE_EFSYS_LOCK_INIT(&sc->enp_lock,
 441                               device_get_nameunit(sc->dev), "nic");
 442         if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc,
 443             &sc->bar, &sc->enp_lock, &enp)) != 0)
 444                 goto fail3;
 445         sc->enp = enp;
 446
 447         if (!ISP2(sfxge_rx_ring_entries) ||
 448             !(sfxge_rx_ring_entries & EFX_RXQ_NDESCS_MASK)) {
 449                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 450                     SFXGE_PARAM_RX_RING, sfxge_rx_ring_entries,
 451                     EFX_RXQ_MINNDESCS, EFX_RXQ_MAXNDESCS);
 452                 error = EINVAL;
 453                 goto fail_rx_ring_entries;
 454         }
 455         sc->rxq_entries = sfxge_rx_ring_entries;
 456
 457         if (!ISP2(sfxge_tx_ring_entries) ||
 458             !(sfxge_tx_ring_entries & EFX_TXQ_NDESCS_MASK)) {
 459                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 460                     SFXGE_PARAM_TX_RING, sfxge_tx_ring_entries,
 461                     EFX_TXQ_MINNDESCS, EFX_TXQ_MAXNDESCS);
 462                 error = EINVAL;
 463                 goto fail_tx_ring_entries;
 464         }
 465         sc->txq_entries = sfxge_tx_ring_entries;
 466
 467         /* Initialize MCDI to talk to the microcontroller. */
 468         if ((error = sfxge_mcdi_init(sc)) != 0)
 469                 goto fail4;
 470
 471         /* Probe the NIC and build the configuration data area. */
 472         if ((error = efx_nic_probe(enp)) != 0)
 473                 goto fail5;
 474
 475         SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
 476                           SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 477                           OID_AUTO, "version", CTLFLAG_RD,
 478                           SFXGE_VERSION_STRING, 0,
 479                           "Driver version");
 480
 481         /* Initialize the NVRAM. */
 482         if ((error = efx_nvram_init(enp)) != 0)
 483                 goto fail6;
 484
 485         /* Initialize the VPD. */
 486         if ((error = efx_vpd_init(enp)) != 0)
 487                 goto fail7;
 488
 489         /* Reset the NIC. */
 490         if ((error = efx_nic_reset(enp)) != 0)
 491                 goto fail8;
 492
 493         /* Initialize buffer table allocation. */
 494         sc->buffer_table_next = 0;
 495
 496         /* Set up interrupts. */
 497         if ((error = sfxge_intr_init(sc)) != 0)
 498                 goto fail8;
 499
 500         /* Initialize event processing state. */
 501         if ((error = sfxge_ev_init(sc)) != 0)
 502                 goto fail11;
 503
 504         /* Initialize receive state. */
 505         if ((error = sfxge_rx_init(sc)) != 0)
 506                 goto fail12;
 507
 508         /* Initialize transmit state. */
 509         if ((error = sfxge_tx_init(sc)) != 0)
 510                 goto fail13;
 511
 512         /* Initialize port state. */
 513         if ((error = sfxge_port_init(sc)) != 0)
 514                 goto fail14;
 515
 516         sc->init_state = SFXGE_INITIALIZED;
 517
 518         return (0);
 519
 520 fail14:
 521         sfxge_tx_fini(sc);
 522
 523 fail13:
 524         sfxge_rx_fini(sc);
 525
 526 fail12:
 527         sfxge_ev_fini(sc);
 528
 529 fail11:
 530         sfxge_intr_fini(sc);
 531
 532 fail8:
 533         efx_vpd_fini(enp);
 534
 535 fail7:
 536         efx_nvram_fini(enp);
 537
 538 fail6:
 539         efx_nic_unprobe(enp);
 540
 541 fail5:
 542         sfxge_mcdi_fini(sc);
 543
 544 fail4:
 545 fail_tx_ring_entries:
 546 fail_rx_ring_entries:
 547         sc->enp = NULL;
 548         efx_nic_destroy(enp);
 549         SFXGE_EFSYS_LOCK_DESTROY(&sc->enp_lock);
 550
 551 fail3:
 552         sfxge_bar_fini(sc);
 553         (void) pci_disable_busmaster(sc->dev);
 554
 555 fail:
 556         sc->dev = NULL;
 557         SFXGE_ADAPTER_LOCK_DESTROY(sc);
 558         return (error);
 559 }
 560
 561 static void
 562 sfxge_destroy(struct sfxge_softc *sc)
 563 {
 564         efx_nic_t *enp;
 565
 566         /* Clean up port state. */
 567         sfxge_port_fini(sc);
 568
 569         /* Clean up transmit state. */
 570         sfxge_tx_fini(sc);
 571
 572         /* Clean up receive state. */
 573         sfxge_rx_fini(sc);
 574
 575         /* Clean up event processing state. */
 576         sfxge_ev_fini(sc);
 577
 578         /* Clean up interrupts. */
 579         sfxge_intr_fini(sc);
 580
 581         /* Tear down common code subsystems. */
 582         efx_nic_reset(sc->enp);
 583         efx_vpd_fini(sc->enp);
 584         efx_nvram_fini(sc->enp);
 585         efx_nic_unprobe(sc->enp);
 586
 587         /* Tear down MCDI. */
 588         sfxge_mcdi_fini(sc);
 589
 590         /* Destroy common code context. */
 591         enp = sc->enp;
 592         sc->enp = NULL;
 593         efx_nic_destroy(enp);
 594
 595         /* Free DMA memory. */
 596         sfxge_dma_fini(sc);
 597
 598         /* Free mapped BARs. */
 599         sfxge_bar_fini(sc);
 600
 601         (void) pci_disable_busmaster(sc->dev);
 602
 603         taskqueue_drain(taskqueue_thread, &sc->task_reset);
 604
 605         /* Destroy the softc lock. */
 606         SFXGE_ADAPTER_LOCK_DESTROY(sc);
 607 }
 608
 609 static int
 610 sfxge_vpd_handler(SYSCTL_HANDLER_ARGS)
 611 {
 612         struct sfxge_softc *sc = arg1;
 613         efx_vpd_value_t value;
 614         int rc;
 615
 616         value.evv_tag = arg2 >> 16;
 617         value.evv_keyword = arg2 & 0xffff;
 618         if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value))
 619             != 0)
 620                 return (rc);
 621
 622         return (SYSCTL_OUT(req, value.evv_value, value.evv_length));
 623 }
 624
 625 static void
 626 sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list,
 627                   efx_vpd_tag_t tag, const char *keyword)
 628 {
 629         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 630         efx_vpd_value_t value;
 631
 632         /* Check whether VPD tag/keyword is present */
 633         value.evv_tag = tag;
 634         value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]);
 635         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0)
 636                 return;
 637
 638         SYSCTL_ADD_PROC(
 639                 ctx, list, OID_AUTO, keyword, CTLTYPE_STRING|CTLFLAG_RD,
 640                 sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]),
 641                 sfxge_vpd_handler, "A", "");
 642 }
 643
 644 static int
 645 sfxge_vpd_init(struct sfxge_softc *sc)
 646 {
 647         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 648         struct sysctl_oid *vpd_node;
 649         struct sysctl_oid_list *vpd_list;
 650         char keyword[3];
 651         efx_vpd_value_t value;
 652         int rc;
 653
 654         if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0)
 655                 goto fail;
 656         sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK);
 657         if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0)
 658                 goto fail2;
 659
 660         /* Copy ID (product name) into device description, and log it. */
 661         value.evv_tag = EFX_VPD_ID;
 662         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) {
 663                 value.evv_value[value.evv_length] = 0;
 664                 device_set_desc_copy(sc->dev, value.evv_value);
 665                 device_printf(sc->dev, "%s\n", value.evv_value);
 666         }
 667
 668         vpd_node = SYSCTL_ADD_NODE(
 669                 ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)),
 670                 OID_AUTO, "vpd", CTLFLAG_RD, NULL, "Vital Product Data");
 671         vpd_list = SYSCTL_CHILDREN(vpd_node);
 672
 673         /* Add sysctls for all expected and any vendor-defined keywords. */
 674         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN");
 675         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC");
 676         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN");
 677         keyword[0] = 'V';
 678         keyword[2] = 0;
 679         for (keyword[1] = '0'; keyword[1] <= '9'; keyword[1]++)
 680                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 681         for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++)
 682                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 683
 684         return (0);
 685
 686 fail2:
 687         free(sc->vpd_data, M_SFXGE);
 688 fail:
 689         return (rc);
 690 }
 691
 692 static void
 693 sfxge_vpd_fini(struct sfxge_softc *sc)
 694 {
 695         free(sc->vpd_data, M_SFXGE);
 696 }
 697
 698 static void
 699 sfxge_reset(void *arg, int npending)
 700 {
 701         struct sfxge_softc *sc;
 702         int rc;
 703
 704         (void)npending;
 705
 706         sc = (struct sfxge_softc *)arg;
 707
 708         SFXGE_ADAPTER_LOCK(sc);
 709
 710         if (sc->init_state != SFXGE_STARTED)
 711                 goto done;
 712
 713         sfxge_stop(sc);
 714         efx_nic_reset(sc->enp);
 715         if ((rc = sfxge_start(sc)) != 0)
 716                 device_printf(sc->dev,
 717                               "reset failed (%d); interface is now stopped\n",
 718                               rc);
 719
 720 done:
 721         SFXGE_ADAPTER_UNLOCK(sc);
 722 }
 723
 724 void
 725 sfxge_schedule_reset(struct sfxge_softc *sc)
 726 {
 727         taskqueue_enqueue(taskqueue_thread, &sc->task_reset);
 728 }
 729
 730 static int
 731 sfxge_attach(device_t dev)
 732 {
 733         struct sfxge_softc *sc;
 734         struct ifnet *ifp;
 735         int error;
 736
 737         sc = device_get_softc(dev);
 738         sc->dev = dev;
 739
 740         /* Allocate ifnet. */
 741         ifp = if_alloc(IFT_ETHER);
 742         if (ifp == NULL) {
 743                 device_printf(dev, "Couldn't allocate ifnet\n");
 744                 error = ENOMEM;
 745                 goto fail;
 746         }
 747         sc->ifnet = ifp;
 748
 749         /* Initialize hardware. */
 750         if ((error = sfxge_create(sc)) != 0)
 751                 goto fail2;
 752
 753         /* Create the ifnet for the port. */
 754         if ((error = sfxge_ifnet_init(ifp, sc)) != 0)
 755                 goto fail3;
 756
 757         if ((error = sfxge_vpd_init(sc)) != 0)
 758                 goto fail4;
 759
 760         sc->init_state = SFXGE_REGISTERED;
 761
 762         return (0);
 763
 764 fail4:
 765         sfxge_ifnet_fini(ifp);
 766 fail3:
 767         sfxge_destroy(sc);
 768
 769 fail2:
 770         if_free(sc->ifnet);
 771
 772 fail:
 773         return (error);
 774 }
 775
 776 static int
 777 sfxge_detach(device_t dev)
 778 {
 779         struct sfxge_softc *sc;
 780
 781         sc = device_get_softc(dev);
 782
 783         sfxge_vpd_fini(sc);
 784
 785         /* Destroy the ifnet. */
 786         sfxge_ifnet_fini(sc->ifnet);
 787
 788         /* Tear down hardware. */
 789         sfxge_destroy(sc);
 790
 791         return (0);
 792 }
 793
 794 static int
 795 sfxge_probe(device_t dev)
 796 {
 797         uint16_t pci_vendor_id;
 798         uint16_t pci_device_id;
 799         efx_family_t family;
 800         int rc;
 801
 802         pci_vendor_id = pci_get_vendor(dev);
 803         pci_device_id = pci_get_device(dev);
 804
 805         rc = efx_family(pci_vendor_id, pci_device_id, &family);
 806         if (rc != 0)
 807                 return (ENXIO);
 808
 809         KASSERT(family == EFX_FAMILY_SIENA, ("impossible controller family"));
 810         device_set_desc(dev, "Solarflare SFC9000 family");
 811         return (0);
 812 }
 813
 814 static device_method_t sfxge_methods[] = {
 815         DEVMETHOD(device_probe,         sfxge_probe),
 816         DEVMETHOD(device_attach,        sfxge_attach),
 817         DEVMETHOD(device_detach,        sfxge_detach),
 818
 819         DEVMETHOD_END
 820 };
 821
 822 static devclass_t sfxge_devclass;
 823
 824 static driver_t sfxge_driver = {
 825         "sfxge",
 826         sfxge_methods,
 827         sizeof(struct sfxge_softc)
 828 };
 829
 830 DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0);