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_VLAN_HWCSUM |           \
  68                          IFCAP_JUMBO_MTU | IFCAP_LINKSTATE)
  69
  70 MALLOC_DEFINE(M_SFXGE, "sfxge", "Solarflare 10GigE driver");
  71
  72
  73 SYSCTL_NODE(_hw, OID_AUTO, sfxge, CTLFLAG_RD, 0,
  74             "SFXGE driver parameters");
  75
  76 #define SFXGE_PARAM_RX_RING     SFXGE_PARAM(rx_ring)
  77 static int sfxge_rx_ring_entries = SFXGE_NDESCS;
  78 TUNABLE_INT(SFXGE_PARAM_RX_RING, &sfxge_rx_ring_entries);
  79 SYSCTL_INT(_hw_sfxge, OID_AUTO, rx_ring, CTLFLAG_RDTUN,
  80            &sfxge_rx_ring_entries, 0,
  81            "Maximum number of descriptors in a receive ring");
  82
  83 #define SFXGE_PARAM_TX_RING     SFXGE_PARAM(tx_ring)
  84 static int sfxge_tx_ring_entries = SFXGE_NDESCS;
  85 TUNABLE_INT(SFXGE_PARAM_TX_RING, &sfxge_tx_ring_entries);
  86 SYSCTL_INT(_hw_sfxge, OID_AUTO, tx_ring, CTLFLAG_RDTUN,
  87            &sfxge_tx_ring_entries, 0,
  88            "Maximum number of descriptors in a transmit ring");
  89
  90
  91 static void
  92 sfxge_reset(void *arg, int npending);
  93
  94 static int
  95 sfxge_start(struct sfxge_softc *sc)
  96 {
  97         int rc;
  98
  99         SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc);
 100
 101         if (sc->init_state == SFXGE_STARTED)
 102                 return (0);
 103
 104         if (sc->init_state != SFXGE_REGISTERED) {
 105                 rc = EINVAL;
 106                 goto fail;
 107         }
 108
 109         if ((rc = efx_nic_init(sc->enp)) != 0)
 110                 goto fail;
 111
 112         /* Start processing interrupts. */
 113         if ((rc = sfxge_intr_start(sc)) != 0)
 114                 goto fail2;
 115
 116         /* Start processing events. */
 117         if ((rc = sfxge_ev_start(sc)) != 0)
 118                 goto fail3;
 119
 120         /* Start the receiver side. */
 121         if ((rc = sfxge_rx_start(sc)) != 0)
 122                 goto fail4;
 123
 124         /* Start the transmitter side. */
 125         if ((rc = sfxge_tx_start(sc)) != 0)
 126                 goto fail5;
 127
 128         /* Fire up the port. */
 129         if ((rc = sfxge_port_start(sc)) != 0)
 130                 goto fail6;
 131
 132         sc->init_state = SFXGE_STARTED;
 133
 134         /* Tell the stack we're running. */
 135         sc->ifnet->if_drv_flags |= IFF_DRV_RUNNING;
 136         sc->ifnet->if_drv_flags &= ~IFF_DRV_OACTIVE;
 137
 138         return (0);
 139
 140 fail6:
 141         sfxge_tx_stop(sc);
 142
 143 fail5:
 144         sfxge_rx_stop(sc);
 145
 146 fail4:
 147         sfxge_ev_stop(sc);
 148
 149 fail3:
 150         sfxge_intr_stop(sc);
 151
 152 fail2:
 153         efx_nic_fini(sc->enp);
 154
 155 fail:
 156         device_printf(sc->dev, "sfxge_start: %d\n", rc);
 157
 158         return (rc);
 159 }
 160
 161 static void
 162 sfxge_if_init(void *arg)
 163 {
 164         struct sfxge_softc *sc;
 165
 166         sc = (struct sfxge_softc *)arg;
 167
 168         SFXGE_ADAPTER_LOCK(sc);
 169         (void)sfxge_start(sc);
 170         SFXGE_ADAPTER_UNLOCK(sc);
 171 }
 172
 173 static void
 174 sfxge_stop(struct sfxge_softc *sc)
 175 {
 176         SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc);
 177
 178         if (sc->init_state != SFXGE_STARTED)
 179                 return;
 180
 181         sc->init_state = SFXGE_REGISTERED;
 182
 183         /* Stop the port. */
 184         sfxge_port_stop(sc);
 185
 186         /* Stop the transmitter. */
 187         sfxge_tx_stop(sc);
 188
 189         /* Stop the receiver. */
 190         sfxge_rx_stop(sc);
 191
 192         /* Stop processing events. */
 193         sfxge_ev_stop(sc);
 194
 195         /* Stop processing interrupts. */
 196         sfxge_intr_stop(sc);
 197
 198         efx_nic_fini(sc->enp);
 199
 200         sc->ifnet->if_drv_flags &= ~IFF_DRV_RUNNING;
 201 }
 202
 203 static int
 204 sfxge_if_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data)
 205 {
 206         struct sfxge_softc *sc;
 207         struct ifreq *ifr;
 208         int error;
 209
 210         ifr = (struct ifreq *)data;
 211         sc = ifp->if_softc;
 212         error = 0;
 213
 214         switch (command) {
 215         case SIOCSIFFLAGS:
 216                 SFXGE_ADAPTER_LOCK(sc);
 217                 if (ifp->if_flags & IFF_UP) {
 218                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 219                                 if ((ifp->if_flags ^ sc->if_flags) &
 220                                     (IFF_PROMISC | IFF_ALLMULTI)) {
 221                                         sfxge_mac_filter_set(sc);
 222                                 }
 223                         } else
 224                                 sfxge_start(sc);
 225                 } else
 226                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 227                                 sfxge_stop(sc);
 228                 sc->if_flags = ifp->if_flags;
 229                 SFXGE_ADAPTER_UNLOCK(sc);
 230                 break;
 231         case SIOCSIFMTU:
 232                 if (ifr->ifr_mtu == ifp->if_mtu) {
 233                         /* Nothing to do */
 234                         error = 0;
 235                 } else if (ifr->ifr_mtu > SFXGE_MAX_MTU) {
 236                         error = EINVAL;
 237                 } else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 238                         ifp->if_mtu = ifr->ifr_mtu;
 239                         error = 0;
 240                 } else {
 241                         /* Restart required */
 242                         SFXGE_ADAPTER_LOCK(sc);
 243                         sfxge_stop(sc);
 244                         ifp->if_mtu = ifr->ifr_mtu;
 245                         error = sfxge_start(sc);
 246                         SFXGE_ADAPTER_UNLOCK(sc);
 247                         if (error != 0) {
 248                                 ifp->if_flags &= ~IFF_UP;
 249                                 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
 250                                 if_down(ifp);
 251                         }
 252                 }
 253                 break;
 254         case SIOCADDMULTI:
 255         case SIOCDELMULTI:
 256                 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 257                         sfxge_mac_filter_set(sc);
 258                 break;
 259         case SIOCSIFCAP:
 260         {
 261                 int reqcap = ifr->ifr_reqcap;
 262                 int capchg_mask;
 263
 264                 SFXGE_ADAPTER_LOCK(sc);
 265
 266                 /* Capabilities to be changed in accordance with request */
 267                 capchg_mask = ifp->if_capenable ^ reqcap;
 268
 269                 /*
 270                  * The networking core already rejects attempts to
 271                  * enable capabilities we don't have.  We still have
 272                  * to reject attempts to disable capabilities that we
 273                  * can't (yet) disable.
 274                  */
 275                 KASSERT((reqcap & ~ifp->if_capabilities) == 0,
 276                     ("Unsupported capabilities %x requested %x vs %x",
 277                      reqcap & ~ifp->if_capabilities,
 278                      reqcap , ifp->if_capabilities));
 279                 if (capchg_mask & SFXGE_CAP_FIXED) {
 280                         error = EINVAL;
 281                         SFXGE_ADAPTER_UNLOCK(sc);
 282                         break;
 283                 }
 284
 285                 if (reqcap & IFCAP_TXCSUM)
 286                         ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP);
 287                 else
 288                         ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP);
 289                 if (reqcap & IFCAP_TXCSUM_IPV6)
 290                         ifp->if_hwassist |= (CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
 291                 else
 292                         ifp->if_hwassist &= ~(CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
 293
 294                 /*
 295                  * The kernel takes both IFCAP_TSOx and CSUM_TSO into
 296                  * account before using TSO. So, we do not touch
 297                  * checksum flags when IFCAP_TSOx is modified.
 298                  * Note that CSUM_TSO is (CSUM_IP_TSO|CSUM_IP6_TSO),
 299                  * but both bits are set in IPv4 and IPv6 mbufs.
 300                  */
 301
 302                 ifp->if_capenable = reqcap;
 303
 304                 SFXGE_ADAPTER_UNLOCK(sc);
 305                 break;
 306         }
 307         case SIOCSIFMEDIA:
 308         case SIOCGIFMEDIA:
 309                 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
 310                 break;
 311         default:
 312                 error = ether_ioctl(ifp, command, data);
 313         }
 314
 315         return (error);
 316 }
 317
 318 static void
 319 sfxge_ifnet_fini(struct ifnet *ifp)
 320 {
 321         struct sfxge_softc *sc = ifp->if_softc;
 322
 323         SFXGE_ADAPTER_LOCK(sc);
 324         sfxge_stop(sc);
 325         SFXGE_ADAPTER_UNLOCK(sc);
 326
 327         ifmedia_removeall(&sc->media);
 328         ether_ifdetach(ifp);
 329         if_free(ifp);
 330 }
 331
 332 static int
 333 sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc)
 334 {
 335         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp);
 336         device_t dev;
 337         int rc;
 338
 339         dev = sc->dev;
 340         sc->ifnet = ifp;
 341
 342         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 343         ifp->if_init = sfxge_if_init;
 344         ifp->if_softc = sc;
 345         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 346         ifp->if_ioctl = sfxge_if_ioctl;
 347
 348         ifp->if_capabilities = SFXGE_CAP;
 349         ifp->if_capenable = SFXGE_CAP_ENABLE;
 350         ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO |
 351                            CSUM_TCP_IPV6 | CSUM_UDP_IPV6;
 352
 353         ether_ifattach(ifp, encp->enc_mac_addr);
 354
 355         ifp->if_transmit = sfxge_if_transmit;
 356         ifp->if_qflush = sfxge_if_qflush;
 357
 358         if ((rc = sfxge_port_ifmedia_init(sc)) != 0)
 359                 goto fail;
 360
 361         return (0);
 362
 363 fail:
 364         ether_ifdetach(sc->ifnet);
 365         return (rc);
 366 }
 367
 368 void
 369 sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp)
 370 {
 371         KASSERT(sc->buffer_table_next + n <=
 372                 efx_nic_cfg_get(sc->enp)->enc_buftbl_limit,
 373                 ("buffer table full"));
 374
 375         *idp = sc->buffer_table_next;
 376         sc->buffer_table_next += n;
 377 }
 378
 379 static int
 380 sfxge_bar_init(struct sfxge_softc *sc)
 381 {
 382         efsys_bar_t *esbp = &sc->bar;
 383
 384         esbp->esb_rid = PCIR_BAR(EFX_MEM_BAR);
 385         if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
 386             &esbp->esb_rid, RF_ACTIVE)) == NULL) {
 387                 device_printf(sc->dev, "Cannot allocate BAR region %d\n",
 388                     EFX_MEM_BAR);
 389                 return (ENXIO);
 390         }
 391         esbp->esb_tag = rman_get_bustag(esbp->esb_res);
 392         esbp->esb_handle = rman_get_bushandle(esbp->esb_res);
 393
 394         SFXGE_BAR_LOCK_INIT(esbp, device_get_nameunit(sc->dev));
 395
 396         return (0);
 397 }
 398
 399 static void
 400 sfxge_bar_fini(struct sfxge_softc *sc)
 401 {
 402         efsys_bar_t *esbp = &sc->bar;
 403
 404         bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid,
 405             esbp->esb_res);
 406         SFXGE_BAR_LOCK_DESTROY(esbp);
 407 }
 408
 409 static int
 410 sfxge_create(struct sfxge_softc *sc)
 411 {
 412         device_t dev;
 413         efx_nic_t *enp;
 414         int error;
 415         char rss_param_name[sizeof(SFXGE_PARAM(%d.max_rss_channels))];
 416
 417         dev = sc->dev;
 418
 419         SFXGE_ADAPTER_LOCK_INIT(sc, device_get_nameunit(sc->dev));
 420
 421         sc->max_rss_channels = 0;
 422         snprintf(rss_param_name, sizeof(rss_param_name),
 423                  SFXGE_PARAM(%d.max_rss_channels),
 424                  (int)device_get_unit(dev));
 425         TUNABLE_INT_FETCH(rss_param_name, &sc->max_rss_channels);
 426
 427         sc->stats_node = SYSCTL_ADD_NODE(
 428                 device_get_sysctl_ctx(dev),
 429                 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 430                 OID_AUTO, "stats", CTLFLAG_RD, NULL, "Statistics");
 431         if (sc->stats_node == NULL) {
 432                 error = ENOMEM;
 433                 goto fail;
 434         }
 435
 436         TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc);
 437
 438         (void) pci_enable_busmaster(dev);
 439
 440         /* Initialize DMA mappings. */
 441         if ((error = sfxge_dma_init(sc)) != 0)
 442                 goto fail;
 443
 444         /* Map the device registers. */
 445         if ((error = sfxge_bar_init(sc)) != 0)
 446                 goto fail;
 447
 448         error = efx_family(pci_get_vendor(dev), pci_get_device(dev),
 449             &sc->family);
 450         KASSERT(error == 0, ("Family should be filtered by sfxge_probe()"));
 451
 452         /* Create the common code nic object. */
 453         SFXGE_EFSYS_LOCK_INIT(&sc->enp_lock,
 454                               device_get_nameunit(sc->dev), "nic");
 455         if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc,
 456             &sc->bar, &sc->enp_lock, &enp)) != 0)
 457                 goto fail3;
 458         sc->enp = enp;
 459
 460         if (!ISP2(sfxge_rx_ring_entries) ||
 461             !(sfxge_rx_ring_entries & EFX_RXQ_NDESCS_MASK)) {
 462                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 463                     SFXGE_PARAM_RX_RING, sfxge_rx_ring_entries,
 464                     EFX_RXQ_MINNDESCS, EFX_RXQ_MAXNDESCS);
 465                 error = EINVAL;
 466                 goto fail_rx_ring_entries;
 467         }
 468         sc->rxq_entries = sfxge_rx_ring_entries;
 469
 470         if (!ISP2(sfxge_tx_ring_entries) ||
 471             !(sfxge_tx_ring_entries & EFX_TXQ_NDESCS_MASK)) {
 472                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 473                     SFXGE_PARAM_TX_RING, sfxge_tx_ring_entries,
 474                     EFX_TXQ_MINNDESCS, EFX_TXQ_MAXNDESCS);
 475                 error = EINVAL;
 476                 goto fail_tx_ring_entries;
 477         }
 478         sc->txq_entries = sfxge_tx_ring_entries;
 479
 480         /* Initialize MCDI to talk to the microcontroller. */
 481         if ((error = sfxge_mcdi_init(sc)) != 0)
 482                 goto fail4;
 483
 484         /* Probe the NIC and build the configuration data area. */
 485         if ((error = efx_nic_probe(enp)) != 0)
 486                 goto fail5;
 487
 488         SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
 489                           SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 490                           OID_AUTO, "version", CTLFLAG_RD,
 491                           SFXGE_VERSION_STRING, 0,
 492                           "Driver version");
 493
 494         /* Initialize the NVRAM. */
 495         if ((error = efx_nvram_init(enp)) != 0)
 496                 goto fail6;
 497
 498         /* Initialize the VPD. */
 499         if ((error = efx_vpd_init(enp)) != 0)
 500                 goto fail7;
 501
 502         /* Reset the NIC. */
 503         if ((error = efx_nic_reset(enp)) != 0)
 504                 goto fail8;
 505
 506         /* Initialize buffer table allocation. */
 507         sc->buffer_table_next = 0;
 508
 509         /* Set up interrupts. */
 510         if ((error = sfxge_intr_init(sc)) != 0)
 511                 goto fail8;
 512
 513         /* Initialize event processing state. */
 514         if ((error = sfxge_ev_init(sc)) != 0)
 515                 goto fail11;
 516
 517         /* Initialize receive state. */
 518         if ((error = sfxge_rx_init(sc)) != 0)
 519                 goto fail12;
 520
 521         /* Initialize transmit state. */
 522         if ((error = sfxge_tx_init(sc)) != 0)
 523                 goto fail13;
 524
 525         /* Initialize port state. */
 526         if ((error = sfxge_port_init(sc)) != 0)
 527                 goto fail14;
 528
 529         sc->init_state = SFXGE_INITIALIZED;
 530
 531         return (0);
 532
 533 fail14:
 534         sfxge_tx_fini(sc);
 535
 536 fail13:
 537         sfxge_rx_fini(sc);
 538
 539 fail12:
 540         sfxge_ev_fini(sc);
 541
 542 fail11:
 543         sfxge_intr_fini(sc);
 544
 545 fail8:
 546         efx_vpd_fini(enp);
 547
 548 fail7:
 549         efx_nvram_fini(enp);
 550
 551 fail6:
 552         efx_nic_unprobe(enp);
 553
 554 fail5:
 555         sfxge_mcdi_fini(sc);
 556
 557 fail4:
 558 fail_tx_ring_entries:
 559 fail_rx_ring_entries:
 560         sc->enp = NULL;
 561         efx_nic_destroy(enp);
 562         SFXGE_EFSYS_LOCK_DESTROY(&sc->enp_lock);
 563
 564 fail3:
 565         sfxge_bar_fini(sc);
 566         (void) pci_disable_busmaster(sc->dev);
 567
 568 fail:
 569         sc->dev = NULL;
 570         SFXGE_ADAPTER_LOCK_DESTROY(sc);
 571         return (error);
 572 }
 573
 574 static void
 575 sfxge_destroy(struct sfxge_softc *sc)
 576 {
 577         efx_nic_t *enp;
 578
 579         /* Clean up port state. */
 580         sfxge_port_fini(sc);
 581
 582         /* Clean up transmit state. */
 583         sfxge_tx_fini(sc);
 584
 585         /* Clean up receive state. */
 586         sfxge_rx_fini(sc);
 587
 588         /* Clean up event processing state. */
 589         sfxge_ev_fini(sc);
 590
 591         /* Clean up interrupts. */
 592         sfxge_intr_fini(sc);
 593
 594         /* Tear down common code subsystems. */
 595         efx_nic_reset(sc->enp);
 596         efx_vpd_fini(sc->enp);
 597         efx_nvram_fini(sc->enp);
 598         efx_nic_unprobe(sc->enp);
 599
 600         /* Tear down MCDI. */
 601         sfxge_mcdi_fini(sc);
 602
 603         /* Destroy common code context. */
 604         enp = sc->enp;
 605         sc->enp = NULL;
 606         efx_nic_destroy(enp);
 607
 608         /* Free DMA memory. */
 609         sfxge_dma_fini(sc);
 610
 611         /* Free mapped BARs. */
 612         sfxge_bar_fini(sc);
 613
 614         (void) pci_disable_busmaster(sc->dev);
 615
 616         taskqueue_drain(taskqueue_thread, &sc->task_reset);
 617
 618         /* Destroy the softc lock. */
 619         SFXGE_ADAPTER_LOCK_DESTROY(sc);
 620 }
 621
 622 static int
 623 sfxge_vpd_handler(SYSCTL_HANDLER_ARGS)
 624 {
 625         struct sfxge_softc *sc = arg1;
 626         efx_vpd_value_t value;
 627         int rc;
 628
 629         value.evv_tag = arg2 >> 16;
 630         value.evv_keyword = arg2 & 0xffff;
 631         if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value))
 632             != 0)
 633                 return (rc);
 634
 635         return (SYSCTL_OUT(req, value.evv_value, value.evv_length));
 636 }
 637
 638 static void
 639 sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list,
 640                   efx_vpd_tag_t tag, const char *keyword)
 641 {
 642         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 643         efx_vpd_value_t value;
 644
 645         /* Check whether VPD tag/keyword is present */
 646         value.evv_tag = tag;
 647         value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]);
 648         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0)
 649                 return;
 650
 651         SYSCTL_ADD_PROC(
 652                 ctx, list, OID_AUTO, keyword, CTLTYPE_STRING|CTLFLAG_RD,
 653                 sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]),
 654                 sfxge_vpd_handler, "A", "");
 655 }
 656
 657 static int
 658 sfxge_vpd_init(struct sfxge_softc *sc)
 659 {
 660         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 661         struct sysctl_oid *vpd_node;
 662         struct sysctl_oid_list *vpd_list;
 663         char keyword[3];
 664         efx_vpd_value_t value;
 665         int rc;
 666
 667         if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0)
 668                 goto fail;
 669         sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK);
 670         if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0)
 671                 goto fail2;
 672
 673         /* Copy ID (product name) into device description, and log it. */
 674         value.evv_tag = EFX_VPD_ID;
 675         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) {
 676                 value.evv_value[value.evv_length] = 0;
 677                 device_set_desc_copy(sc->dev, value.evv_value);
 678                 device_printf(sc->dev, "%s\n", value.evv_value);
 679         }
 680
 681         vpd_node = SYSCTL_ADD_NODE(
 682                 ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)),
 683                 OID_AUTO, "vpd", CTLFLAG_RD, NULL, "Vital Product Data");
 684         vpd_list = SYSCTL_CHILDREN(vpd_node);
 685
 686         /* Add sysctls for all expected and any vendor-defined keywords. */
 687         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN");
 688         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC");
 689         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN");
 690         keyword[0] = 'V';
 691         keyword[2] = 0;
 692         for (keyword[1] = '0'; keyword[1] <= '9'; keyword[1]++)
 693                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 694         for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++)
 695                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 696
 697         return (0);
 698
 699 fail2:
 700         free(sc->vpd_data, M_SFXGE);
 701 fail:
 702         return (rc);
 703 }
 704
 705 static void
 706 sfxge_vpd_fini(struct sfxge_softc *sc)
 707 {
 708         free(sc->vpd_data, M_SFXGE);
 709 }
 710
 711 static void
 712 sfxge_reset(void *arg, int npending)
 713 {
 714         struct sfxge_softc *sc;
 715         int rc;
 716
 717         (void)npending;
 718
 719         sc = (struct sfxge_softc *)arg;
 720
 721         SFXGE_ADAPTER_LOCK(sc);
 722
 723         if (sc->init_state != SFXGE_STARTED)
 724                 goto done;
 725
 726         sfxge_stop(sc);
 727         efx_nic_reset(sc->enp);
 728         if ((rc = sfxge_start(sc)) != 0)
 729                 device_printf(sc->dev,
 730                               "reset failed (%d); interface is now stopped\n",
 731                               rc);
 732
 733 done:
 734         SFXGE_ADAPTER_UNLOCK(sc);
 735 }
 736
 737 void
 738 sfxge_schedule_reset(struct sfxge_softc *sc)
 739 {
 740         taskqueue_enqueue(taskqueue_thread, &sc->task_reset);
 741 }
 742
 743 static int
 744 sfxge_attach(device_t dev)
 745 {
 746         struct sfxge_softc *sc;
 747         struct ifnet *ifp;
 748         int error;
 749
 750         sc = device_get_softc(dev);
 751         sc->dev = dev;
 752
 753         /* Allocate ifnet. */
 754         ifp = if_alloc(IFT_ETHER);
 755         if (ifp == NULL) {
 756                 device_printf(dev, "Couldn't allocate ifnet\n");
 757                 error = ENOMEM;
 758                 goto fail;
 759         }
 760         sc->ifnet = ifp;
 761
 762         /* Initialize hardware. */
 763         if ((error = sfxge_create(sc)) != 0)
 764                 goto fail2;
 765
 766         /* Create the ifnet for the port. */
 767         if ((error = sfxge_ifnet_init(ifp, sc)) != 0)
 768                 goto fail3;
 769
 770         if ((error = sfxge_vpd_init(sc)) != 0)
 771                 goto fail4;
 772
 773         sc->init_state = SFXGE_REGISTERED;
 774
 775         return (0);
 776
 777 fail4:
 778         sfxge_ifnet_fini(ifp);
 779 fail3:
 780         sfxge_destroy(sc);
 781
 782 fail2:
 783         if_free(sc->ifnet);
 784
 785 fail:
 786         return (error);
 787 }
 788
 789 static int
 790 sfxge_detach(device_t dev)
 791 {
 792         struct sfxge_softc *sc;
 793
 794         sc = device_get_softc(dev);
 795
 796         sfxge_vpd_fini(sc);
 797
 798         /* Destroy the ifnet. */
 799         sfxge_ifnet_fini(sc->ifnet);
 800
 801         /* Tear down hardware. */
 802         sfxge_destroy(sc);
 803
 804         return (0);
 805 }
 806
 807 static int
 808 sfxge_probe(device_t dev)
 809 {
 810         uint16_t pci_vendor_id;
 811         uint16_t pci_device_id;
 812         efx_family_t family;
 813         int rc;
 814
 815         pci_vendor_id = pci_get_vendor(dev);
 816         pci_device_id = pci_get_device(dev);
 817
 818         rc = efx_family(pci_vendor_id, pci_device_id, &family);
 819         if (rc != 0)
 820                 return (ENXIO);
 821
 822         KASSERT(family == EFX_FAMILY_SIENA, ("impossible controller family"));
 823         device_set_desc(dev, "Solarflare SFC9000 family");
 824         return (0);
 825 }
 826
 827 static device_method_t sfxge_methods[] = {
 828         DEVMETHOD(device_probe,         sfxge_probe),
 829         DEVMETHOD(device_attach,        sfxge_attach),
 830         DEVMETHOD(device_detach,        sfxge_detach),
 831
 832         DEVMETHOD_END
 833 };
 834
 835 static devclass_t sfxge_devclass;
 836
 837 static driver_t sfxge_driver = {
 838         "sfxge",
 839         sfxge_methods,
 840         sizeof(struct sfxge_softc)
 841 };
 842
 843 DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0);