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_media.h>
  53 #include <net/if_types.h>
  54
  55 #include "common/efx.h"
  56
  57 #include "sfxge.h"
  58 #include "sfxge_rx.h"
  59 #include "sfxge_version.h"
  60
  61 #define SFXGE_CAP (IFCAP_VLAN_MTU | IFCAP_VLAN_HWCSUM |                 \
  62                    IFCAP_RXCSUM | IFCAP_TXCSUM | IFCAP_TSO |            \
  63                    IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6 |              \
  64                    IFCAP_JUMBO_MTU | IFCAP_LRO |                        \
  65                    IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE)
  66 #define SFXGE_CAP_ENABLE SFXGE_CAP
  67 #define SFXGE_CAP_FIXED (IFCAP_VLAN_MTU | IFCAP_RXCSUM | IFCAP_VLAN_HWCSUM | \
  68                          IFCAP_RXCSUM_IPV6 |                            \
  69                          IFCAP_JUMBO_MTU | IFCAP_LINKSTATE)
  70
  71 MALLOC_DEFINE(M_SFXGE, "sfxge", "Solarflare 10GigE driver");
  72
  73
  74 SYSCTL_NODE(_hw, OID_AUTO, sfxge, CTLFLAG_RD, 0,
  75             "SFXGE driver parameters");
  76
  77 #define SFXGE_PARAM_RX_RING     SFXGE_PARAM(rx_ring)
  78 static int sfxge_rx_ring_entries = SFXGE_NDESCS;
  79 TUNABLE_INT(SFXGE_PARAM_RX_RING, &sfxge_rx_ring_entries);
  80 SYSCTL_INT(_hw_sfxge, OID_AUTO, rx_ring, CTLFLAG_RDTUN,
  81            &sfxge_rx_ring_entries, 0,
  82            "Maximum number of descriptors in a receive ring");
  83
  84 #define SFXGE_PARAM_TX_RING     SFXGE_PARAM(tx_ring)
  85 static int sfxge_tx_ring_entries = SFXGE_NDESCS;
  86 TUNABLE_INT(SFXGE_PARAM_TX_RING, &sfxge_tx_ring_entries);
  87 SYSCTL_INT(_hw_sfxge, OID_AUTO, tx_ring, CTLFLAG_RDTUN,
  88            &sfxge_tx_ring_entries, 0,
  89            "Maximum number of descriptors in a transmit ring");
  90
  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                 SFXGE_ADAPTER_LOCK(sc);
 262
 263                 /*
 264                  * The networking core already rejects attempts to
 265                  * enable capabilities we don't have.  We still have
 266                  * to reject attempts to disable capabilities that we
 267                  * can't (yet) disable.
 268                  */
 269                 if (~ifr->ifr_reqcap & SFXGE_CAP_FIXED) {
 270                         error = EINVAL;
 271                         SFXGE_ADAPTER_UNLOCK(sc);
 272                         break;
 273                 }
 274
 275                 ifp->if_capenable = ifr->ifr_reqcap;
 276                 if (ifp->if_capenable & IFCAP_TXCSUM)
 277                         ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP);
 278                 else
 279                         ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP);
 280                 if (ifp->if_capenable & IFCAP_TXCSUM_IPV6)
 281                         ifp->if_hwassist |= (CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
 282                 else
 283                         ifp->if_hwassist &= ~(CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
 284                 if (ifp->if_capenable & IFCAP_TSO)
 285                         ifp->if_hwassist |= CSUM_TSO;
 286                 else
 287                         ifp->if_hwassist &= ~CSUM_TSO;
 288
 289                 SFXGE_ADAPTER_UNLOCK(sc);
 290                 break;
 291         case SIOCSIFMEDIA:
 292         case SIOCGIFMEDIA:
 293                 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
 294                 break;
 295         default:
 296                 error = ether_ioctl(ifp, command, data);
 297         }
 298
 299         return (error);
 300 }
 301
 302 static void
 303 sfxge_ifnet_fini(struct ifnet *ifp)
 304 {
 305         struct sfxge_softc *sc = ifp->if_softc;
 306
 307         SFXGE_ADAPTER_LOCK(sc);
 308         sfxge_stop(sc);
 309         SFXGE_ADAPTER_UNLOCK(sc);
 310
 311         ifmedia_removeall(&sc->media);
 312         ether_ifdetach(ifp);
 313         if_free(ifp);
 314 }
 315
 316 static int
 317 sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc)
 318 {
 319         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp);
 320         device_t dev;
 321         int rc;
 322
 323         dev = sc->dev;
 324         sc->ifnet = ifp;
 325
 326         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 327         ifp->if_init = sfxge_if_init;
 328         ifp->if_softc = sc;
 329         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 330         ifp->if_ioctl = sfxge_if_ioctl;
 331
 332         ifp->if_capabilities = SFXGE_CAP;
 333         ifp->if_capenable = SFXGE_CAP_ENABLE;
 334         ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO |
 335                            CSUM_TCP_IPV6 | CSUM_UDP_IPV6;
 336
 337         ether_ifattach(ifp, encp->enc_mac_addr);
 338
 339         ifp->if_transmit = sfxge_if_transmit;
 340         ifp->if_qflush = sfxge_if_qflush;
 341
 342         if ((rc = sfxge_port_ifmedia_init(sc)) != 0)
 343                 goto fail;
 344
 345         return (0);
 346
 347 fail:
 348         ether_ifdetach(sc->ifnet);
 349         return (rc);
 350 }
 351
 352 void
 353 sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp)
 354 {
 355         KASSERT(sc->buffer_table_next + n <=
 356                 efx_nic_cfg_get(sc->enp)->enc_buftbl_limit,
 357                 ("buffer table full"));
 358
 359         *idp = sc->buffer_table_next;
 360         sc->buffer_table_next += n;
 361 }
 362
 363 static int
 364 sfxge_bar_init(struct sfxge_softc *sc)
 365 {
 366         efsys_bar_t *esbp = &sc->bar;
 367
 368         esbp->esb_rid = PCIR_BAR(EFX_MEM_BAR);
 369         if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
 370             &esbp->esb_rid, RF_ACTIVE)) == NULL) {
 371                 device_printf(sc->dev, "Cannot allocate BAR region %d\n",
 372                     EFX_MEM_BAR);
 373                 return (ENXIO);
 374         }
 375         esbp->esb_tag = rman_get_bustag(esbp->esb_res);
 376         esbp->esb_handle = rman_get_bushandle(esbp->esb_res);
 377
 378         SFXGE_BAR_LOCK_INIT(esbp, device_get_nameunit(sc->dev));
 379
 380         return (0);
 381 }
 382
 383 static void
 384 sfxge_bar_fini(struct sfxge_softc *sc)
 385 {
 386         efsys_bar_t *esbp = &sc->bar;
 387
 388         bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid,
 389             esbp->esb_res);
 390         SFXGE_BAR_LOCK_DESTROY(esbp);
 391 }
 392
 393 static int
 394 sfxge_create(struct sfxge_softc *sc)
 395 {
 396         device_t dev;
 397         efx_nic_t *enp;
 398         int error;
 399         char rss_param_name[sizeof(SFXGE_PARAM(%d.max_rss_channels))];
 400
 401         dev = sc->dev;
 402
 403         SFXGE_ADAPTER_LOCK_INIT(sc, device_get_nameunit(sc->dev));
 404
 405         sc->max_rss_channels = 0;
 406         snprintf(rss_param_name, sizeof(rss_param_name),
 407                  SFXGE_PARAM(%d.max_rss_channels),
 408                  (int)device_get_unit(dev));
 409         TUNABLE_INT_FETCH(rss_param_name, &sc->max_rss_channels);
 410
 411         sc->stats_node = SYSCTL_ADD_NODE(
 412                 device_get_sysctl_ctx(dev),
 413                 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 414                 OID_AUTO, "stats", CTLFLAG_RD, NULL, "Statistics");
 415         if (sc->stats_node == NULL) {
 416                 error = ENOMEM;
 417                 goto fail;
 418         }
 419
 420         TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc);
 421
 422         (void) pci_enable_busmaster(dev);
 423
 424         /* Initialize DMA mappings. */
 425         if ((error = sfxge_dma_init(sc)) != 0)
 426                 goto fail;
 427
 428         /* Map the device registers. */
 429         if ((error = sfxge_bar_init(sc)) != 0)
 430                 goto fail;
 431
 432         error = efx_family(pci_get_vendor(dev), pci_get_device(dev),
 433             &sc->family);
 434         KASSERT(error == 0, ("Family should be filtered by sfxge_probe()"));
 435
 436         /* Create the common code nic object. */
 437         SFXGE_EFSYS_LOCK_INIT(&sc->enp_lock,
 438                               device_get_nameunit(sc->dev), "nic");
 439         if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc,
 440             &sc->bar, &sc->enp_lock, &enp)) != 0)
 441                 goto fail3;
 442         sc->enp = enp;
 443
 444         if (!ISP2(sfxge_rx_ring_entries) ||
 445             !(sfxge_rx_ring_entries & EFX_RXQ_NDESCS_MASK)) {
 446                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 447                     SFXGE_PARAM_RX_RING, sfxge_rx_ring_entries,
 448                     EFX_RXQ_MINNDESCS, EFX_RXQ_MAXNDESCS);
 449                 error = EINVAL;
 450                 goto fail_rx_ring_entries;
 451         }
 452         sc->rxq_entries = sfxge_rx_ring_entries;
 453
 454         if (!ISP2(sfxge_tx_ring_entries) ||
 455             !(sfxge_tx_ring_entries & EFX_TXQ_NDESCS_MASK)) {
 456                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 457                     SFXGE_PARAM_TX_RING, sfxge_tx_ring_entries,
 458                     EFX_TXQ_MINNDESCS, EFX_TXQ_MAXNDESCS);
 459                 error = EINVAL;
 460                 goto fail_tx_ring_entries;
 461         }
 462         sc->txq_entries = sfxge_tx_ring_entries;
 463
 464         /* Initialize MCDI to talk to the microcontroller. */
 465         if ((error = sfxge_mcdi_init(sc)) != 0)
 466                 goto fail4;
 467
 468         /* Probe the NIC and build the configuration data area. */
 469         if ((error = efx_nic_probe(enp)) != 0)
 470                 goto fail5;
 471
 472         SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
 473                           SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 474                           OID_AUTO, "version", CTLFLAG_RD,
 475                           SFXGE_VERSION_STRING, 0,
 476                           "Driver version");
 477
 478         /* Initialize the NVRAM. */
 479         if ((error = efx_nvram_init(enp)) != 0)
 480                 goto fail6;
 481
 482         /* Initialize the VPD. */
 483         if ((error = efx_vpd_init(enp)) != 0)
 484                 goto fail7;
 485
 486         /* Reset the NIC. */
 487         if ((error = efx_nic_reset(enp)) != 0)
 488                 goto fail8;
 489
 490         /* Initialize buffer table allocation. */
 491         sc->buffer_table_next = 0;
 492
 493         /* Set up interrupts. */
 494         if ((error = sfxge_intr_init(sc)) != 0)
 495                 goto fail8;
 496
 497         /* Initialize event processing state. */
 498         if ((error = sfxge_ev_init(sc)) != 0)
 499                 goto fail11;
 500
 501         /* Initialize receive state. */
 502         if ((error = sfxge_rx_init(sc)) != 0)
 503                 goto fail12;
 504
 505         /* Initialize transmit state. */
 506         if ((error = sfxge_tx_init(sc)) != 0)
 507                 goto fail13;
 508
 509         /* Initialize port state. */
 510         if ((error = sfxge_port_init(sc)) != 0)
 511                 goto fail14;
 512
 513         sc->init_state = SFXGE_INITIALIZED;
 514
 515         return (0);
 516
 517 fail14:
 518         sfxge_tx_fini(sc);
 519
 520 fail13:
 521         sfxge_rx_fini(sc);
 522
 523 fail12:
 524         sfxge_ev_fini(sc);
 525
 526 fail11:
 527         sfxge_intr_fini(sc);
 528
 529 fail8:
 530         efx_vpd_fini(enp);
 531
 532 fail7:
 533         efx_nvram_fini(enp);
 534
 535 fail6:
 536         efx_nic_unprobe(enp);
 537
 538 fail5:
 539         sfxge_mcdi_fini(sc);
 540
 541 fail4:
 542 fail_tx_ring_entries:
 543 fail_rx_ring_entries:
 544         sc->enp = NULL;
 545         efx_nic_destroy(enp);
 546         SFXGE_EFSYS_LOCK_DESTROY(&sc->enp_lock);
 547
 548 fail3:
 549         sfxge_bar_fini(sc);
 550         (void) pci_disable_busmaster(sc->dev);
 551
 552 fail:
 553         sc->dev = NULL;
 554         SFXGE_ADAPTER_LOCK_DESTROY(sc);
 555         return (error);
 556 }
 557
 558 static void
 559 sfxge_destroy(struct sfxge_softc *sc)
 560 {
 561         efx_nic_t *enp;
 562
 563         /* Clean up port state. */
 564         sfxge_port_fini(sc);
 565
 566         /* Clean up transmit state. */
 567         sfxge_tx_fini(sc);
 568
 569         /* Clean up receive state. */
 570         sfxge_rx_fini(sc);
 571
 572         /* Clean up event processing state. */
 573         sfxge_ev_fini(sc);
 574
 575         /* Clean up interrupts. */
 576         sfxge_intr_fini(sc);
 577
 578         /* Tear down common code subsystems. */
 579         efx_nic_reset(sc->enp);
 580         efx_vpd_fini(sc->enp);
 581         efx_nvram_fini(sc->enp);
 582         efx_nic_unprobe(sc->enp);
 583
 584         /* Tear down MCDI. */
 585         sfxge_mcdi_fini(sc);
 586
 587         /* Destroy common code context. */
 588         enp = sc->enp;
 589         sc->enp = NULL;
 590         efx_nic_destroy(enp);
 591
 592         /* Free DMA memory. */
 593         sfxge_dma_fini(sc);
 594
 595         /* Free mapped BARs. */
 596         sfxge_bar_fini(sc);
 597
 598         (void) pci_disable_busmaster(sc->dev);
 599
 600         taskqueue_drain(taskqueue_thread, &sc->task_reset);
 601
 602         /* Destroy the softc lock. */
 603         SFXGE_ADAPTER_LOCK_DESTROY(sc);
 604 }
 605
 606 static int
 607 sfxge_vpd_handler(SYSCTL_HANDLER_ARGS)
 608 {
 609         struct sfxge_softc *sc = arg1;
 610         efx_vpd_value_t value;
 611         int rc;
 612
 613         value.evv_tag = arg2 >> 16;
 614         value.evv_keyword = arg2 & 0xffff;
 615         if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value))
 616             != 0)
 617                 return (rc);
 618
 619         return (SYSCTL_OUT(req, value.evv_value, value.evv_length));
 620 }
 621
 622 static void
 623 sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list,
 624                   efx_vpd_tag_t tag, const char *keyword)
 625 {
 626         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 627         efx_vpd_value_t value;
 628
 629         /* Check whether VPD tag/keyword is present */
 630         value.evv_tag = tag;
 631         value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]);
 632         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0)
 633                 return;
 634
 635         SYSCTL_ADD_PROC(
 636                 ctx, list, OID_AUTO, keyword, CTLTYPE_STRING|CTLFLAG_RD,
 637                 sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]),
 638                 sfxge_vpd_handler, "A", "");
 639 }
 640
 641 static int
 642 sfxge_vpd_init(struct sfxge_softc *sc)
 643 {
 644         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 645         struct sysctl_oid *vpd_node;
 646         struct sysctl_oid_list *vpd_list;
 647         char keyword[3];
 648         efx_vpd_value_t value;
 649         int rc;
 650
 651         if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0)
 652                 goto fail;
 653         sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK);
 654         if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0)
 655                 goto fail2;
 656
 657         /* Copy ID (product name) into device description, and log it. */
 658         value.evv_tag = EFX_VPD_ID;
 659         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) {
 660                 value.evv_value[value.evv_length] = 0;
 661                 device_set_desc_copy(sc->dev, value.evv_value);
 662                 device_printf(sc->dev, "%s\n", value.evv_value);
 663         }
 664
 665         vpd_node = SYSCTL_ADD_NODE(
 666                 ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)),
 667                 OID_AUTO, "vpd", CTLFLAG_RD, NULL, "Vital Product Data");
 668         vpd_list = SYSCTL_CHILDREN(vpd_node);
 669
 670         /* Add sysctls for all expected and any vendor-defined keywords. */
 671         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN");
 672         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC");
 673         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN");
 674         keyword[0] = 'V';
 675         keyword[2] = 0;
 676         for (keyword[1] = '0'; keyword[1] <= '9'; keyword[1]++)
 677                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 678         for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++)
 679                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 680
 681         return (0);
 682
 683 fail2:
 684         free(sc->vpd_data, M_SFXGE);
 685 fail:
 686         return (rc);
 687 }
 688
 689 static void
 690 sfxge_vpd_fini(struct sfxge_softc *sc)
 691 {
 692         free(sc->vpd_data, M_SFXGE);
 693 }
 694
 695 static void
 696 sfxge_reset(void *arg, int npending)
 697 {
 698         struct sfxge_softc *sc;
 699         int rc;
 700
 701         (void)npending;
 702
 703         sc = (struct sfxge_softc *)arg;
 704
 705         SFXGE_ADAPTER_LOCK(sc);
 706
 707         if (sc->init_state != SFXGE_STARTED)
 708                 goto done;
 709
 710         sfxge_stop(sc);
 711         efx_nic_reset(sc->enp);
 712         if ((rc = sfxge_start(sc)) != 0)
 713                 device_printf(sc->dev,
 714                               "reset failed (%d); interface is now stopped\n",
 715                               rc);
 716
 717 done:
 718         SFXGE_ADAPTER_UNLOCK(sc);
 719 }
 720
 721 void
 722 sfxge_schedule_reset(struct sfxge_softc *sc)
 723 {
 724         taskqueue_enqueue(taskqueue_thread, &sc->task_reset);
 725 }
 726
 727 static int
 728 sfxge_attach(device_t dev)
 729 {
 730         struct sfxge_softc *sc;
 731         struct ifnet *ifp;
 732         int error;
 733
 734         sc = device_get_softc(dev);
 735         sc->dev = dev;
 736
 737         /* Allocate ifnet. */
 738         ifp = if_alloc(IFT_ETHER);
 739         if (ifp == NULL) {
 740                 device_printf(dev, "Couldn't allocate ifnet\n");
 741                 error = ENOMEM;
 742                 goto fail;
 743         }
 744         sc->ifnet = ifp;
 745
 746         /* Initialize hardware. */
 747         if ((error = sfxge_create(sc)) != 0)
 748                 goto fail2;
 749
 750         /* Create the ifnet for the port. */
 751         if ((error = sfxge_ifnet_init(ifp, sc)) != 0)
 752                 goto fail3;
 753
 754         if ((error = sfxge_vpd_init(sc)) != 0)
 755                 goto fail4;
 756
 757         sc->init_state = SFXGE_REGISTERED;
 758
 759         return (0);
 760
 761 fail4:
 762         sfxge_ifnet_fini(ifp);
 763 fail3:
 764         sfxge_destroy(sc);
 765
 766 fail2:
 767         if_free(sc->ifnet);
 768
 769 fail:
 770         return (error);
 771 }
 772
 773 static int
 774 sfxge_detach(device_t dev)
 775 {
 776         struct sfxge_softc *sc;
 777
 778         sc = device_get_softc(dev);
 779
 780         sfxge_vpd_fini(sc);
 781
 782         /* Destroy the ifnet. */
 783         sfxge_ifnet_fini(sc->ifnet);
 784
 785         /* Tear down hardware. */
 786         sfxge_destroy(sc);
 787
 788         return (0);
 789 }
 790
 791 static int
 792 sfxge_probe(device_t dev)
 793 {
 794         uint16_t pci_vendor_id;
 795         uint16_t pci_device_id;
 796         efx_family_t family;
 797         int rc;
 798
 799         pci_vendor_id = pci_get_vendor(dev);
 800         pci_device_id = pci_get_device(dev);
 801
 802         rc = efx_family(pci_vendor_id, pci_device_id, &family);
 803         if (rc != 0)
 804                 return (ENXIO);
 805
 806         KASSERT(family == EFX_FAMILY_SIENA, ("impossible controller family"));
 807         device_set_desc(dev, "Solarflare SFC9000 family");
 808         return (0);
 809 }
 810
 811 static device_method_t sfxge_methods[] = {
 812         DEVMETHOD(device_probe,         sfxge_probe),
 813         DEVMETHOD(device_attach,        sfxge_attach),
 814         DEVMETHOD(device_detach,        sfxge_detach),
 815
 816         DEVMETHOD_END
 817 };
 818
 819 static devclass_t sfxge_devclass;
 820
 821 static driver_t sfxge_driver = {
 822         "sfxge",
 823         sfxge_methods,
 824         sizeof(struct sfxge_softc)
 825 };
 826
 827 DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0);