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 |                        \
  64                    IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6 |              \
  65                    IFCAP_TSO4 | IFCAP_TSO6 |                            \
  66                    IFCAP_JUMBO_MTU |                                    \
  67                    IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE | IFCAP_HWSTATS)
  68 #define SFXGE_CAP_ENABLE SFXGE_CAP
  69 #define SFXGE_CAP_FIXED (IFCAP_VLAN_MTU |                               \
  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 static void
  93 sfxge_reset(void *arg, int npending);
  94
  95 static int
  96 sfxge_start(struct sfxge_softc *sc)
  97 {
  98         int rc;
  99
 100         SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc);
 101
 102         if (sc->init_state == SFXGE_STARTED)
 103                 return (0);
 104
 105         if (sc->init_state != SFXGE_REGISTERED) {
 106                 rc = EINVAL;
 107                 goto fail;
 108         }
 109
 110         if ((rc = efx_nic_init(sc->enp)) != 0)
 111                 goto fail;
 112
 113         /* Start processing interrupts. */
 114         if ((rc = sfxge_intr_start(sc)) != 0)
 115                 goto fail2;
 116
 117         /* Start processing events. */
 118         if ((rc = sfxge_ev_start(sc)) != 0)
 119                 goto fail3;
 120
 121         /* Start the receiver side. */
 122         if ((rc = sfxge_rx_start(sc)) != 0)
 123                 goto fail4;
 124
 125         /* Start the transmitter side. */
 126         if ((rc = sfxge_tx_start(sc)) != 0)
 127                 goto fail5;
 128
 129         /* Fire up the port. */
 130         if ((rc = sfxge_port_start(sc)) != 0)
 131                 goto fail6;
 132
 133         sc->init_state = SFXGE_STARTED;
 134
 135         /* Tell the stack we're running. */
 136         sc->ifnet->if_drv_flags |= IFF_DRV_RUNNING;
 137         sc->ifnet->if_drv_flags &= ~IFF_DRV_OACTIVE;
 138
 139         return (0);
 140
 141 fail6:
 142         sfxge_tx_stop(sc);
 143
 144 fail5:
 145         sfxge_rx_stop(sc);
 146
 147 fail4:
 148         sfxge_ev_stop(sc);
 149
 150 fail3:
 151         sfxge_intr_stop(sc);
 152
 153 fail2:
 154         efx_nic_fini(sc->enp);
 155
 156 fail:
 157         device_printf(sc->dev, "sfxge_start: %d\n", rc);
 158
 159         return (rc);
 160 }
 161
 162 static void
 163 sfxge_if_init(void *arg)
 164 {
 165         struct sfxge_softc *sc;
 166
 167         sc = (struct sfxge_softc *)arg;
 168
 169         SFXGE_ADAPTER_LOCK(sc);
 170         (void)sfxge_start(sc);
 171         SFXGE_ADAPTER_UNLOCK(sc);
 172 }
 173
 174 static void
 175 sfxge_stop(struct sfxge_softc *sc)
 176 {
 177         SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc);
 178
 179         if (sc->init_state != SFXGE_STARTED)
 180                 return;
 181
 182         sc->init_state = SFXGE_REGISTERED;
 183
 184         /* Stop the port. */
 185         sfxge_port_stop(sc);
 186
 187         /* Stop the transmitter. */
 188         sfxge_tx_stop(sc);
 189
 190         /* Stop the receiver. */
 191         sfxge_rx_stop(sc);
 192
 193         /* Stop processing events. */
 194         sfxge_ev_stop(sc);
 195
 196         /* Stop processing interrupts. */
 197         sfxge_intr_stop(sc);
 198
 199         efx_nic_fini(sc->enp);
 200
 201         sc->ifnet->if_drv_flags &= ~IFF_DRV_RUNNING;
 202 }
 203
 204 static int
 205 sfxge_if_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data)
 206 {
 207         struct sfxge_softc *sc;
 208         struct ifreq *ifr;
 209         int error;
 210
 211         ifr = (struct ifreq *)data;
 212         sc = ifp->if_softc;
 213         error = 0;
 214
 215         switch (command) {
 216         case SIOCSIFFLAGS:
 217                 SFXGE_ADAPTER_LOCK(sc);
 218                 if (ifp->if_flags & IFF_UP) {
 219                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 220                                 if ((ifp->if_flags ^ sc->if_flags) &
 221                                     (IFF_PROMISC | IFF_ALLMULTI)) {
 222                                         sfxge_mac_filter_set(sc);
 223                                 }
 224                         } else
 225                                 sfxge_start(sc);
 226                 } else
 227                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 228                                 sfxge_stop(sc);
 229                 sc->if_flags = ifp->if_flags;
 230                 SFXGE_ADAPTER_UNLOCK(sc);
 231                 break;
 232         case SIOCSIFMTU:
 233                 if (ifr->ifr_mtu == ifp->if_mtu) {
 234                         /* Nothing to do */
 235                         error = 0;
 236                 } else if (ifr->ifr_mtu > SFXGE_MAX_MTU) {
 237                         error = EINVAL;
 238                 } else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 239                         ifp->if_mtu = ifr->ifr_mtu;
 240                         error = 0;
 241                 } else {
 242                         /* Restart required */
 243                         SFXGE_ADAPTER_LOCK(sc);
 244                         sfxge_stop(sc);
 245                         ifp->if_mtu = ifr->ifr_mtu;
 246                         error = sfxge_start(sc);
 247                         SFXGE_ADAPTER_UNLOCK(sc);
 248                         if (error != 0) {
 249                                 ifp->if_flags &= ~IFF_UP;
 250                                 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
 251                                 if_down(ifp);
 252                         }
 253                 }
 254                 break;
 255         case SIOCADDMULTI:
 256         case SIOCDELMULTI:
 257                 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 258                         sfxge_mac_filter_set(sc);
 259                 break;
 260         case SIOCSIFCAP:
 261         {
 262                 int reqcap = ifr->ifr_reqcap;
 263                 int capchg_mask;
 264
 265                 SFXGE_ADAPTER_LOCK(sc);
 266
 267                 /* Capabilities to be changed in accordance with request */
 268                 capchg_mask = ifp->if_capenable ^ reqcap;
 269
 270                 /*
 271                  * The networking core already rejects attempts to
 272                  * enable capabilities we don't have.  We still have
 273                  * to reject attempts to disable capabilities that we
 274                  * can't (yet) disable.
 275                  */
 276                 KASSERT((reqcap & ~ifp->if_capabilities) == 0,
 277                     ("Unsupported capabilities %x requested %x vs %x",
 278                      reqcap & ~ifp->if_capabilities,
 279                      reqcap , ifp->if_capabilities));
 280                 if (capchg_mask & SFXGE_CAP_FIXED) {
 281                         error = EINVAL;
 282                         SFXGE_ADAPTER_UNLOCK(sc);
 283                         break;
 284                 }
 285
 286                 /* Check request before any changes */
 287                 if ((capchg_mask & IFCAP_TSO4) &&
 288                     (reqcap & (IFCAP_TSO4 | IFCAP_TXCSUM)) == IFCAP_TSO4) {
 289                         error = EAGAIN;
 290                         SFXGE_ADAPTER_UNLOCK(sc);
 291                         if_printf(ifp, "enable txcsum before tso4\n");
 292                         break;
 293                 }
 294                 if ((capchg_mask & IFCAP_TSO6) &&
 295                     (reqcap & (IFCAP_TSO6 | IFCAP_TXCSUM_IPV6)) == IFCAP_TSO6) {
 296                         error = EAGAIN;
 297                         SFXGE_ADAPTER_UNLOCK(sc);
 298                         if_printf(ifp, "enable txcsum6 before tso6\n");
 299                         break;
 300                 }
 301
 302                 if (reqcap & IFCAP_TXCSUM) {
 303                         ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP);
 304                 } else {
 305                         ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP);
 306                         if (reqcap & IFCAP_TSO4) {
 307                                 reqcap &= ~IFCAP_TSO4;
 308                                 if_printf(ifp,
 309                                     "tso4 disabled due to -txcsum\n");
 310                         }
 311                 }
 312                 if (reqcap & IFCAP_TXCSUM_IPV6) {
 313                         ifp->if_hwassist |= (CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
 314                 } else {
 315                         ifp->if_hwassist &= ~(CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
 316                         if (reqcap & IFCAP_TSO6) {
 317                                 reqcap &= ~IFCAP_TSO6;
 318                                 if_printf(ifp,
 319                                     "tso6 disabled due to -txcsum6\n");
 320                         }
 321                 }
 322
 323                 /*
 324                  * The kernel takes both IFCAP_TSOx and CSUM_TSO into
 325                  * account before using TSO. So, we do not touch
 326                  * checksum flags when IFCAP_TSOx is modified.
 327                  * Note that CSUM_TSO is (CSUM_IP_TSO|CSUM_IP6_TSO),
 328                  * but both bits are set in IPv4 and IPv6 mbufs.
 329                  */
 330
 331                 ifp->if_capenable = reqcap;
 332
 333                 SFXGE_ADAPTER_UNLOCK(sc);
 334                 break;
 335         }
 336         case SIOCSIFMEDIA:
 337         case SIOCGIFMEDIA:
 338                 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
 339                 break;
 340         default:
 341                 error = ether_ioctl(ifp, command, data);
 342         }
 343
 344         return (error);
 345 }
 346
 347 static void
 348 sfxge_ifnet_fini(struct ifnet *ifp)
 349 {
 350         struct sfxge_softc *sc = ifp->if_softc;
 351
 352         SFXGE_ADAPTER_LOCK(sc);
 353         sfxge_stop(sc);
 354         SFXGE_ADAPTER_UNLOCK(sc);
 355
 356         ifmedia_removeall(&sc->media);
 357         ether_ifdetach(ifp);
 358         if_free(ifp);
 359 }
 360
 361 static int
 362 sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc)
 363 {
 364         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp);
 365         device_t dev;
 366         int rc;
 367
 368         dev = sc->dev;
 369         sc->ifnet = ifp;
 370
 371         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 372         ifp->if_init = sfxge_if_init;
 373         ifp->if_softc = sc;
 374         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 375         ifp->if_ioctl = sfxge_if_ioctl;
 376
 377         ifp->if_capabilities = SFXGE_CAP;
 378         ifp->if_capenable = SFXGE_CAP_ENABLE;
 379
 380 #ifdef SFXGE_LRO
 381         ifp->if_capabilities |= IFCAP_LRO;
 382         ifp->if_capenable |= IFCAP_LRO;
 383 #endif
 384
 385         ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO |
 386                            CSUM_TCP_IPV6 | CSUM_UDP_IPV6;
 387
 388         ether_ifattach(ifp, encp->enc_mac_addr);
 389
 390         ifp->if_transmit = sfxge_if_transmit;
 391         ifp->if_qflush = sfxge_if_qflush;
 392
 393         ifp->if_get_counter = sfxge_get_counter;
 394
 395         if ((rc = sfxge_port_ifmedia_init(sc)) != 0)
 396                 goto fail;
 397
 398         return (0);
 399
 400 fail:
 401         ether_ifdetach(sc->ifnet);
 402         return (rc);
 403 }
 404
 405 void
 406 sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp)
 407 {
 408         KASSERT(sc->buffer_table_next + n <=
 409                 efx_nic_cfg_get(sc->enp)->enc_buftbl_limit,
 410                 ("buffer table full"));
 411
 412         *idp = sc->buffer_table_next;
 413         sc->buffer_table_next += n;
 414 }
 415
 416 static int
 417 sfxge_bar_init(struct sfxge_softc *sc)
 418 {
 419         efsys_bar_t *esbp = &sc->bar;
 420
 421         esbp->esb_rid = PCIR_BAR(EFX_MEM_BAR);
 422         if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
 423             &esbp->esb_rid, RF_ACTIVE)) == NULL) {
 424                 device_printf(sc->dev, "Cannot allocate BAR region %d\n",
 425                     EFX_MEM_BAR);
 426                 return (ENXIO);
 427         }
 428         esbp->esb_tag = rman_get_bustag(esbp->esb_res);
 429         esbp->esb_handle = rman_get_bushandle(esbp->esb_res);
 430
 431         SFXGE_BAR_LOCK_INIT(esbp, device_get_nameunit(sc->dev));
 432
 433         return (0);
 434 }
 435
 436 static void
 437 sfxge_bar_fini(struct sfxge_softc *sc)
 438 {
 439         efsys_bar_t *esbp = &sc->bar;
 440
 441         bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid,
 442             esbp->esb_res);
 443         SFXGE_BAR_LOCK_DESTROY(esbp);
 444 }
 445
 446 static int
 447 sfxge_create(struct sfxge_softc *sc)
 448 {
 449         device_t dev;
 450         efx_nic_t *enp;
 451         int error;
 452         char rss_param_name[sizeof(SFXGE_PARAM(%d.max_rss_channels))];
 453
 454         dev = sc->dev;
 455
 456         SFXGE_ADAPTER_LOCK_INIT(sc, device_get_nameunit(sc->dev));
 457
 458         sc->max_rss_channels = 0;
 459         snprintf(rss_param_name, sizeof(rss_param_name),
 460                  SFXGE_PARAM(%d.max_rss_channels),
 461                  (int)device_get_unit(dev));
 462         TUNABLE_INT_FETCH(rss_param_name, &sc->max_rss_channels);
 463
 464         sc->stats_node = SYSCTL_ADD_NODE(
 465                 device_get_sysctl_ctx(dev),
 466                 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 467                 OID_AUTO, "stats", CTLFLAG_RD, NULL, "Statistics");
 468         if (sc->stats_node == NULL) {
 469                 error = ENOMEM;
 470                 goto fail;
 471         }
 472
 473         TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc);
 474
 475         (void) pci_enable_busmaster(dev);
 476
 477         /* Initialize DMA mappings. */
 478         if ((error = sfxge_dma_init(sc)) != 0)
 479                 goto fail;
 480
 481         /* Map the device registers. */
 482         if ((error = sfxge_bar_init(sc)) != 0)
 483                 goto fail;
 484
 485         error = efx_family(pci_get_vendor(dev), pci_get_device(dev),
 486             &sc->family);
 487         KASSERT(error == 0, ("Family should be filtered by sfxge_probe()"));
 488
 489         /* Create the common code nic object. */
 490         SFXGE_EFSYS_LOCK_INIT(&sc->enp_lock,
 491                               device_get_nameunit(sc->dev), "nic");
 492         if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc,
 493             &sc->bar, &sc->enp_lock, &enp)) != 0)
 494                 goto fail3;
 495         sc->enp = enp;
 496
 497         if (!ISP2(sfxge_rx_ring_entries) ||
 498             !(sfxge_rx_ring_entries & EFX_RXQ_NDESCS_MASK)) {
 499                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 500                     SFXGE_PARAM_RX_RING, sfxge_rx_ring_entries,
 501                     EFX_RXQ_MINNDESCS, EFX_RXQ_MAXNDESCS);
 502                 error = EINVAL;
 503                 goto fail_rx_ring_entries;
 504         }
 505         sc->rxq_entries = sfxge_rx_ring_entries;
 506
 507         if (!ISP2(sfxge_tx_ring_entries) ||
 508             !(sfxge_tx_ring_entries & EFX_TXQ_NDESCS_MASK)) {
 509                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 510                     SFXGE_PARAM_TX_RING, sfxge_tx_ring_entries,
 511                     EFX_TXQ_MINNDESCS, EFX_TXQ_MAXNDESCS);
 512                 error = EINVAL;
 513                 goto fail_tx_ring_entries;
 514         }
 515         sc->txq_entries = sfxge_tx_ring_entries;
 516
 517         /* Initialize MCDI to talk to the microcontroller. */
 518         if ((error = sfxge_mcdi_init(sc)) != 0)
 519                 goto fail4;
 520
 521         /* Probe the NIC and build the configuration data area. */
 522         if ((error = efx_nic_probe(enp)) != 0)
 523                 goto fail5;
 524
 525         SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
 526                           SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 527                           OID_AUTO, "version", CTLFLAG_RD,
 528                           SFXGE_VERSION_STRING, 0,
 529                           "Driver version");
 530
 531         /* Initialize the NVRAM. */
 532         if ((error = efx_nvram_init(enp)) != 0)
 533                 goto fail6;
 534
 535         /* Initialize the VPD. */
 536         if ((error = efx_vpd_init(enp)) != 0)
 537                 goto fail7;
 538
 539         /* Reset the NIC. */
 540         if ((error = efx_nic_reset(enp)) != 0)
 541                 goto fail8;
 542
 543         /* Initialize buffer table allocation. */
 544         sc->buffer_table_next = 0;
 545
 546         /* Set up interrupts. */
 547         if ((error = sfxge_intr_init(sc)) != 0)
 548                 goto fail8;
 549
 550         /* Initialize event processing state. */
 551         if ((error = sfxge_ev_init(sc)) != 0)
 552                 goto fail11;
 553
 554         /* Initialize receive state. */
 555         if ((error = sfxge_rx_init(sc)) != 0)
 556                 goto fail12;
 557
 558         /* Initialize transmit state. */
 559         if ((error = sfxge_tx_init(sc)) != 0)
 560                 goto fail13;
 561
 562         /* Initialize port state. */
 563         if ((error = sfxge_port_init(sc)) != 0)
 564                 goto fail14;
 565
 566         sc->init_state = SFXGE_INITIALIZED;
 567
 568         return (0);
 569
 570 fail14:
 571         sfxge_tx_fini(sc);
 572
 573 fail13:
 574         sfxge_rx_fini(sc);
 575
 576 fail12:
 577         sfxge_ev_fini(sc);
 578
 579 fail11:
 580         sfxge_intr_fini(sc);
 581
 582 fail8:
 583         efx_vpd_fini(enp);
 584
 585 fail7:
 586         efx_nvram_fini(enp);
 587
 588 fail6:
 589         efx_nic_unprobe(enp);
 590
 591 fail5:
 592         sfxge_mcdi_fini(sc);
 593
 594 fail4:
 595 fail_tx_ring_entries:
 596 fail_rx_ring_entries:
 597         sc->enp = NULL;
 598         efx_nic_destroy(enp);
 599         SFXGE_EFSYS_LOCK_DESTROY(&sc->enp_lock);
 600
 601 fail3:
 602         sfxge_bar_fini(sc);
 603         (void) pci_disable_busmaster(sc->dev);
 604
 605 fail:
 606         sc->dev = NULL;
 607         SFXGE_ADAPTER_LOCK_DESTROY(sc);
 608         return (error);
 609 }
 610
 611 static void
 612 sfxge_destroy(struct sfxge_softc *sc)
 613 {
 614         efx_nic_t *enp;
 615
 616         /* Clean up port state. */
 617         sfxge_port_fini(sc);
 618
 619         /* Clean up transmit state. */
 620         sfxge_tx_fini(sc);
 621
 622         /* Clean up receive state. */
 623         sfxge_rx_fini(sc);
 624
 625         /* Clean up event processing state. */
 626         sfxge_ev_fini(sc);
 627
 628         /* Clean up interrupts. */
 629         sfxge_intr_fini(sc);
 630
 631         /* Tear down common code subsystems. */
 632         efx_nic_reset(sc->enp);
 633         efx_vpd_fini(sc->enp);
 634         efx_nvram_fini(sc->enp);
 635         efx_nic_unprobe(sc->enp);
 636
 637         /* Tear down MCDI. */
 638         sfxge_mcdi_fini(sc);
 639
 640         /* Destroy common code context. */
 641         enp = sc->enp;
 642         sc->enp = NULL;
 643         efx_nic_destroy(enp);
 644
 645         /* Free DMA memory. */
 646         sfxge_dma_fini(sc);
 647
 648         /* Free mapped BARs. */
 649         sfxge_bar_fini(sc);
 650
 651         (void) pci_disable_busmaster(sc->dev);
 652
 653         taskqueue_drain(taskqueue_thread, &sc->task_reset);
 654
 655         /* Destroy the softc lock. */
 656         SFXGE_ADAPTER_LOCK_DESTROY(sc);
 657 }
 658
 659 static int
 660 sfxge_vpd_handler(SYSCTL_HANDLER_ARGS)
 661 {
 662         struct sfxge_softc *sc = arg1;
 663         efx_vpd_value_t value;
 664         int rc;
 665
 666         value.evv_tag = arg2 >> 16;
 667         value.evv_keyword = arg2 & 0xffff;
 668         if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value))
 669             != 0)
 670                 return (rc);
 671
 672         return (SYSCTL_OUT(req, value.evv_value, value.evv_length));
 673 }
 674
 675 static void
 676 sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list,
 677                   efx_vpd_tag_t tag, const char *keyword)
 678 {
 679         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 680         efx_vpd_value_t value;
 681
 682         /* Check whether VPD tag/keyword is present */
 683         value.evv_tag = tag;
 684         value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]);
 685         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0)
 686                 return;
 687
 688         SYSCTL_ADD_PROC(
 689                 ctx, list, OID_AUTO, keyword, CTLTYPE_STRING|CTLFLAG_RD,
 690                 sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]),
 691                 sfxge_vpd_handler, "A", "");
 692 }
 693
 694 static int
 695 sfxge_vpd_init(struct sfxge_softc *sc)
 696 {
 697         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 698         struct sysctl_oid *vpd_node;
 699         struct sysctl_oid_list *vpd_list;
 700         char keyword[3];
 701         efx_vpd_value_t value;
 702         int rc;
 703
 704         if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0)
 705                 goto fail;
 706         sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK);
 707         if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0)
 708                 goto fail2;
 709
 710         /* Copy ID (product name) into device description, and log it. */
 711         value.evv_tag = EFX_VPD_ID;
 712         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) {
 713                 value.evv_value[value.evv_length] = 0;
 714                 device_set_desc_copy(sc->dev, value.evv_value);
 715                 device_printf(sc->dev, "%s\n", value.evv_value);
 716         }
 717
 718         vpd_node = SYSCTL_ADD_NODE(
 719                 ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)),
 720                 OID_AUTO, "vpd", CTLFLAG_RD, NULL, "Vital Product Data");
 721         vpd_list = SYSCTL_CHILDREN(vpd_node);
 722
 723         /* Add sysctls for all expected and any vendor-defined keywords. */
 724         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN");
 725         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC");
 726         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN");
 727         keyword[0] = 'V';
 728         keyword[2] = 0;
 729         for (keyword[1] = '0'; keyword[1] <= '9'; keyword[1]++)
 730                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 731         for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++)
 732                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 733
 734         return (0);
 735
 736 fail2:
 737         free(sc->vpd_data, M_SFXGE);
 738 fail:
 739         return (rc);
 740 }
 741
 742 static void
 743 sfxge_vpd_fini(struct sfxge_softc *sc)
 744 {
 745         free(sc->vpd_data, M_SFXGE);
 746 }
 747
 748 static void
 749 sfxge_reset(void *arg, int npending)
 750 {
 751         struct sfxge_softc *sc;
 752         int rc;
 753
 754         (void)npending;
 755
 756         sc = (struct sfxge_softc *)arg;
 757
 758         SFXGE_ADAPTER_LOCK(sc);
 759
 760         if (sc->init_state != SFXGE_STARTED)
 761                 goto done;
 762
 763         sfxge_stop(sc);
 764         efx_nic_reset(sc->enp);
 765         if ((rc = sfxge_start(sc)) != 0)
 766                 device_printf(sc->dev,
 767                               "reset failed (%d); interface is now stopped\n",
 768                               rc);
 769
 770 done:
 771         SFXGE_ADAPTER_UNLOCK(sc);
 772 }
 773
 774 void
 775 sfxge_schedule_reset(struct sfxge_softc *sc)
 776 {
 777         taskqueue_enqueue(taskqueue_thread, &sc->task_reset);
 778 }
 779
 780 static int
 781 sfxge_attach(device_t dev)
 782 {
 783         struct sfxge_softc *sc;
 784         struct ifnet *ifp;
 785         int error;
 786
 787         sc = device_get_softc(dev);
 788         sc->dev = dev;
 789
 790         /* Allocate ifnet. */
 791         ifp = if_alloc(IFT_ETHER);
 792         if (ifp == NULL) {
 793                 device_printf(dev, "Couldn't allocate ifnet\n");
 794                 error = ENOMEM;
 795                 goto fail;
 796         }
 797         sc->ifnet = ifp;
 798
 799         /* Initialize hardware. */
 800         if ((error = sfxge_create(sc)) != 0)
 801                 goto fail2;
 802
 803         /* Create the ifnet for the port. */
 804         if ((error = sfxge_ifnet_init(ifp, sc)) != 0)
 805                 goto fail3;
 806
 807         if ((error = sfxge_vpd_init(sc)) != 0)
 808                 goto fail4;
 809
 810         sc->init_state = SFXGE_REGISTERED;
 811
 812         return (0);
 813
 814 fail4:
 815         sfxge_ifnet_fini(ifp);
 816 fail3:
 817         sfxge_destroy(sc);
 818
 819 fail2:
 820         if_free(sc->ifnet);
 821
 822 fail:
 823         return (error);
 824 }
 825
 826 static int
 827 sfxge_detach(device_t dev)
 828 {
 829         struct sfxge_softc *sc;
 830
 831         sc = device_get_softc(dev);
 832
 833         sfxge_vpd_fini(sc);
 834
 835         /* Destroy the ifnet. */
 836         sfxge_ifnet_fini(sc->ifnet);
 837
 838         /* Tear down hardware. */
 839         sfxge_destroy(sc);
 840
 841         return (0);
 842 }
 843
 844 static int
 845 sfxge_probe(device_t dev)
 846 {
 847         uint16_t pci_vendor_id;
 848         uint16_t pci_device_id;
 849         efx_family_t family;
 850         int rc;
 851
 852         pci_vendor_id = pci_get_vendor(dev);
 853         pci_device_id = pci_get_device(dev);
 854
 855         rc = efx_family(pci_vendor_id, pci_device_id, &family);
 856         if (rc != 0)
 857                 return (ENXIO);
 858
 859         KASSERT(family == EFX_FAMILY_SIENA, ("impossible controller family"));
 860         device_set_desc(dev, "Solarflare SFC9000 family");
 861         return (0);
 862 }
 863
 864 static device_method_t sfxge_methods[] = {
 865         DEVMETHOD(device_probe,         sfxge_probe),
 866         DEVMETHOD(device_attach,        sfxge_attach),
 867         DEVMETHOD(device_detach,        sfxge_detach),
 868
 869         DEVMETHOD_END
 870 };
 871
 872 static devclass_t sfxge_devclass;
 873
 874 static driver_t sfxge_driver = {
 875         "sfxge",
 876         sfxge_methods,
 877         sizeof(struct sfxge_softc)
 878 };
 879
 880 DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0);