sys/dev/sfxge/sfxge.c

   1 /*-
   2  * Copyright (c) 2010-2015 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 are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright notice,
  12  *    this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright notice,
  14  *    this list of conditions and the following disclaimer in the documentation
  15  *    and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  18  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  19  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  24  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  25  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  27  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  *
  29  * The views and conclusions contained in the software and documentation are
  30  * those of the authors and should not be interpreted as representing official
  31  * policies, either expressed or implied, of the FreeBSD Project.
  32  */
  33
  34 #include <sys/cdefs.h>
  35 __FBSDID("$FreeBSD$");
  36
  37 #include <sys/param.h>
  38 #include <sys/kernel.h>
  39 #include <sys/bus.h>
  40 #include <sys/rman.h>
  41 #include <sys/lock.h>
  42 #include <sys/module.h>
  43 #include <sys/mutex.h>
  44 #include <sys/smp.h>
  45 #include <sys/socket.h>
  46 #include <sys/taskqueue.h>
  47 #include <sys/sockio.h>
  48 #include <sys/sysctl.h>
  49 #include <sys/priv.h>
  50 #include <sys/syslog.h>
  51
  52 #include <dev/pci/pcireg.h>
  53 #include <dev/pci/pcivar.h>
  54
  55 #include <net/ethernet.h>
  56 #include <net/if.h>
  57 #include <net/if_var.h>
  58 #include <net/if_media.h>
  59 #include <net/if_types.h>
  60
  61 #include "common/efx.h"
  62
  63 #include "sfxge.h"
  64 #include "sfxge_rx.h"
  65 #include "sfxge_ioc.h"
  66 #include "sfxge_version.h"
  67
  68 #define SFXGE_CAP (IFCAP_VLAN_MTU | IFCAP_VLAN_HWCSUM |                 \
  69                    IFCAP_RXCSUM | IFCAP_TXCSUM |                        \
  70                    IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6 |              \
  71                    IFCAP_TSO4 | IFCAP_TSO6 |                            \
  72                    IFCAP_JUMBO_MTU |                                    \
  73                    IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE | IFCAP_HWSTATS)
  74 #define SFXGE_CAP_ENABLE SFXGE_CAP
  75 #define SFXGE_CAP_FIXED (IFCAP_VLAN_MTU |                               \
  76                          IFCAP_JUMBO_MTU | IFCAP_LINKSTATE | IFCAP_HWSTATS)
  77
  78 MALLOC_DEFINE(M_SFXGE, "sfxge", "Solarflare 10GigE driver");
  79
  80
  81 SYSCTL_NODE(_hw, OID_AUTO, sfxge, CTLFLAG_RD, 0,
  82             "SFXGE driver parameters");
  83
  84 #define SFXGE_PARAM_RX_RING     SFXGE_PARAM(rx_ring)
  85 static int sfxge_rx_ring_entries = SFXGE_NDESCS;
  86 TUNABLE_INT(SFXGE_PARAM_RX_RING, &sfxge_rx_ring_entries);
  87 SYSCTL_INT(_hw_sfxge, OID_AUTO, rx_ring, CTLFLAG_RDTUN,
  88            &sfxge_rx_ring_entries, 0,
  89            "Maximum number of descriptors in a receive ring");
  90
  91 #define SFXGE_PARAM_TX_RING     SFXGE_PARAM(tx_ring)
  92 static int sfxge_tx_ring_entries = SFXGE_NDESCS;
  93 TUNABLE_INT(SFXGE_PARAM_TX_RING, &sfxge_tx_ring_entries);
  94 SYSCTL_INT(_hw_sfxge, OID_AUTO, tx_ring, CTLFLAG_RDTUN,
  95            &sfxge_tx_ring_entries, 0,
  96            "Maximum number of descriptors in a transmit ring");
  97
  98 #define SFXGE_PARAM_RESTART_ATTEMPTS    SFXGE_PARAM(restart_attempts)
  99 static int sfxge_restart_attempts = 3;
 100 TUNABLE_INT(SFXGE_PARAM_RESTART_ATTEMPTS, &sfxge_restart_attempts);
 101 SYSCTL_INT(_hw_sfxge, OID_AUTO, restart_attempts, CTLFLAG_RDTUN,
 102            &sfxge_restart_attempts, 0,
 103            "Maximum number of attempts to bring interface up after reset");
 104
 105 #if EFSYS_OPT_MCDI_LOGGING
 106 #define SFXGE_PARAM_MCDI_LOGGING        SFXGE_PARAM(mcdi_logging)
 107 static int sfxge_mcdi_logging = 0;
 108 TUNABLE_INT(SFXGE_PARAM_MCDI_LOGGING, &sfxge_mcdi_logging);
 109 #endif
 110
 111 static void
 112 sfxge_reset(void *arg, int npending);
 113
 114 static int
 115 sfxge_estimate_rsrc_limits(struct sfxge_softc *sc)
 116 {
 117         efx_drv_limits_t limits;
 118         int rc;
 119         unsigned int evq_max;
 120         uint32_t evq_allocated;
 121         uint32_t rxq_allocated;
 122         uint32_t txq_allocated;
 123
 124         /*
 125          * Limit the number of event queues to:
 126          *  - number of CPUs
 127          *  - hardwire maximum RSS channels
 128          *  - administratively specified maximum RSS channels
 129          */
 130         evq_max = MIN(mp_ncpus, EFX_MAXRSS);
 131         if (sc->max_rss_channels > 0)
 132                 evq_max = MIN(evq_max, sc->max_rss_channels);
 133
 134         memset(&limits, 0, sizeof(limits));
 135
 136         limits.edl_min_evq_count = 1;
 137         limits.edl_max_evq_count = evq_max;
 138         limits.edl_min_txq_count = SFXGE_TXQ_NTYPES;
 139         limits.edl_max_txq_count = evq_max + SFXGE_TXQ_NTYPES - 1;
 140         limits.edl_min_rxq_count = 1;
 141         limits.edl_max_rxq_count = evq_max;
 142
 143         efx_nic_set_drv_limits(sc->enp, &limits);
 144
 145         if ((rc = efx_nic_init(sc->enp)) != 0)
 146                 return (rc);
 147
 148         rc = efx_nic_get_vi_pool(sc->enp, &evq_allocated, &rxq_allocated,
 149                                  &txq_allocated);
 150         if (rc != 0) {
 151                 efx_nic_fini(sc->enp);
 152                 return (rc);
 153         }
 154
 155         KASSERT(txq_allocated >= SFXGE_TXQ_NTYPES,
 156                 ("txq_allocated < SFXGE_TXQ_NTYPES"));
 157
 158         sc->evq_max = MIN(evq_allocated, evq_max);
 159         sc->evq_max = MIN(rxq_allocated, sc->evq_max);
 160         sc->evq_max = MIN(txq_allocated - (SFXGE_TXQ_NTYPES - 1),
 161                           sc->evq_max);
 162
 163         KASSERT(sc->evq_max <= evq_max,
 164                 ("allocated more than maximum requested"));
 165
 166         /*
 167          * NIC is kept initialized in the case of success to be able to
 168          * initialize port to find out media types.
 169          */
 170         return (0);
 171 }
 172
 173 static int
 174 sfxge_set_drv_limits(struct sfxge_softc *sc)
 175 {
 176         efx_drv_limits_t limits;
 177
 178         memset(&limits, 0, sizeof(limits));
 179
 180         /* Limits are strict since take into account initial estimation */
 181         limits.edl_min_evq_count = limits.edl_max_evq_count =
 182             sc->intr.n_alloc;
 183         limits.edl_min_txq_count = limits.edl_max_txq_count =
 184             sc->intr.n_alloc + SFXGE_TXQ_NTYPES - 1;
 185         limits.edl_min_rxq_count = limits.edl_max_rxq_count =
 186             sc->intr.n_alloc;
 187
 188         return (efx_nic_set_drv_limits(sc->enp, &limits));
 189 }
 190
 191 static int
 192 sfxge_start(struct sfxge_softc *sc)
 193 {
 194         int rc;
 195
 196         SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc);
 197
 198         if (sc->init_state == SFXGE_STARTED)
 199                 return (0);
 200
 201         if (sc->init_state != SFXGE_REGISTERED) {
 202                 rc = EINVAL;
 203                 goto fail;
 204         }
 205
 206         /* Set required resource limits */
 207         if ((rc = sfxge_set_drv_limits(sc)) != 0)
 208                 goto fail;
 209
 210         if ((rc = efx_nic_init(sc->enp)) != 0)
 211                 goto fail;
 212
 213         /* Start processing interrupts. */
 214         if ((rc = sfxge_intr_start(sc)) != 0)
 215                 goto fail2;
 216
 217         /* Start processing events. */
 218         if ((rc = sfxge_ev_start(sc)) != 0)
 219                 goto fail3;
 220
 221         /* Fire up the port. */
 222         if ((rc = sfxge_port_start(sc)) != 0)
 223                 goto fail4;
 224
 225         /* Start the receiver side. */
 226         if ((rc = sfxge_rx_start(sc)) != 0)
 227                 goto fail5;
 228
 229         /* Start the transmitter side. */
 230         if ((rc = sfxge_tx_start(sc)) != 0)
 231                 goto fail6;
 232
 233         sc->init_state = SFXGE_STARTED;
 234
 235         /* Tell the stack we're running. */
 236         sc->ifnet->if_drv_flags |= IFF_DRV_RUNNING;
 237         sc->ifnet->if_drv_flags &= ~IFF_DRV_OACTIVE;
 238
 239         return (0);
 240
 241 fail6:
 242         sfxge_rx_stop(sc);
 243
 244 fail5:
 245         sfxge_port_stop(sc);
 246
 247 fail4:
 248         sfxge_ev_stop(sc);
 249
 250 fail3:
 251         sfxge_intr_stop(sc);
 252
 253 fail2:
 254         efx_nic_fini(sc->enp);
 255
 256 fail:
 257         device_printf(sc->dev, "sfxge_start: %d\n", rc);
 258
 259         return (rc);
 260 }
 261
 262 static void
 263 sfxge_if_init(void *arg)
 264 {
 265         struct sfxge_softc *sc;
 266
 267         sc = (struct sfxge_softc *)arg;
 268
 269         SFXGE_ADAPTER_LOCK(sc);
 270         (void)sfxge_start(sc);
 271         SFXGE_ADAPTER_UNLOCK(sc);
 272 }
 273
 274 static void
 275 sfxge_stop(struct sfxge_softc *sc)
 276 {
 277         SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc);
 278
 279         if (sc->init_state != SFXGE_STARTED)
 280                 return;
 281
 282         sc->init_state = SFXGE_REGISTERED;
 283
 284         /* Stop the transmitter. */
 285         sfxge_tx_stop(sc);
 286
 287         /* Stop the receiver. */
 288         sfxge_rx_stop(sc);
 289
 290         /* Stop the port. */
 291         sfxge_port_stop(sc);
 292
 293         /* Stop processing events. */
 294         sfxge_ev_stop(sc);
 295
 296         /* Stop processing interrupts. */
 297         sfxge_intr_stop(sc);
 298
 299         efx_nic_fini(sc->enp);
 300
 301         sc->ifnet->if_drv_flags &= ~IFF_DRV_RUNNING;
 302 }
 303
 304
 305 static int
 306 sfxge_vpd_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ioc)
 307 {
 308         efx_vpd_value_t value;
 309         int rc = 0;
 310
 311         switch (ioc->u.vpd.op) {
 312         case SFXGE_VPD_OP_GET_KEYWORD:
 313                 value.evv_tag = ioc->u.vpd.tag;
 314                 value.evv_keyword = ioc->u.vpd.keyword;
 315                 rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value);
 316                 if (rc != 0)
 317                         break;
 318                 ioc->u.vpd.len = MIN(ioc->u.vpd.len, value.evv_length);
 319                 if (ioc->u.vpd.payload != 0) {
 320                         rc = copyout(value.evv_value, ioc->u.vpd.payload,
 321                                      ioc->u.vpd.len);
 322                 }
 323                 break;
 324         case SFXGE_VPD_OP_SET_KEYWORD:
 325                 if (ioc->u.vpd.len > sizeof(value.evv_value))
 326                         return (EINVAL);
 327                 value.evv_tag = ioc->u.vpd.tag;
 328                 value.evv_keyword = ioc->u.vpd.keyword;
 329                 value.evv_length = ioc->u.vpd.len;
 330                 rc = copyin(ioc->u.vpd.payload, value.evv_value, value.evv_length);
 331                 if (rc != 0)
 332                         break;
 333                 rc = efx_vpd_set(sc->enp, sc->vpd_data, sc->vpd_size, &value);
 334                 if (rc != 0)
 335                         break;
 336                 rc = efx_vpd_verify(sc->enp, sc->vpd_data, sc->vpd_size);
 337                 if (rc != 0)
 338                         break;
 339                 rc = efx_vpd_write(sc->enp, sc->vpd_data, sc->vpd_size);
 340                 break;
 341         default:
 342                 rc = EOPNOTSUPP;
 343                 break;
 344         }
 345
 346         return (rc);
 347 }
 348
 349 static int
 350 sfxge_private_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ioc)
 351 {
 352         switch (ioc->op) {
 353         case SFXGE_MCDI_IOC:
 354                 return (sfxge_mcdi_ioctl(sc, ioc));
 355         case SFXGE_NVRAM_IOC:
 356                 return (sfxge_nvram_ioctl(sc, ioc));
 357         case SFXGE_VPD_IOC:
 358                 return (sfxge_vpd_ioctl(sc, ioc));
 359         default:
 360                 return (EOPNOTSUPP);
 361         }
 362 }
 363
 364
 365 static int
 366 sfxge_if_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data)
 367 {
 368         struct sfxge_softc *sc;
 369         struct ifreq *ifr;
 370         sfxge_ioc_t ioc;
 371         int error;
 372
 373         ifr = (struct ifreq *)data;
 374         sc = ifp->if_softc;
 375         error = 0;
 376
 377         switch (command) {
 378         case SIOCSIFFLAGS:
 379                 SFXGE_ADAPTER_LOCK(sc);
 380                 if (ifp->if_flags & IFF_UP) {
 381                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 382                                 if ((ifp->if_flags ^ sc->if_flags) &
 383                                     (IFF_PROMISC | IFF_ALLMULTI)) {
 384                                         sfxge_mac_filter_set(sc);
 385                                 }
 386                         } else
 387                                 sfxge_start(sc);
 388                 } else
 389                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 390                                 sfxge_stop(sc);
 391                 sc->if_flags = ifp->if_flags;
 392                 SFXGE_ADAPTER_UNLOCK(sc);
 393                 break;
 394         case SIOCSIFMTU:
 395                 if (ifr->ifr_mtu == ifp->if_mtu) {
 396                         /* Nothing to do */
 397                         error = 0;
 398                 } else if (ifr->ifr_mtu > SFXGE_MAX_MTU) {
 399                         error = EINVAL;
 400                 } else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 401                         ifp->if_mtu = ifr->ifr_mtu;
 402                         error = 0;
 403                 } else {
 404                         /* Restart required */
 405                         SFXGE_ADAPTER_LOCK(sc);
 406                         sfxge_stop(sc);
 407                         ifp->if_mtu = ifr->ifr_mtu;
 408                         error = sfxge_start(sc);
 409                         SFXGE_ADAPTER_UNLOCK(sc);
 410                         if (error != 0) {
 411                                 ifp->if_flags &= ~IFF_UP;
 412                                 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
 413                                 if_down(ifp);
 414                         }
 415                 }
 416                 break;
 417         case SIOCADDMULTI:
 418         case SIOCDELMULTI:
 419                 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 420                         sfxge_mac_filter_set(sc);
 421                 break;
 422         case SIOCSIFCAP:
 423         {
 424                 int reqcap = ifr->ifr_reqcap;
 425                 int capchg_mask;
 426
 427                 SFXGE_ADAPTER_LOCK(sc);
 428
 429                 /* Capabilities to be changed in accordance with request */
 430                 capchg_mask = ifp->if_capenable ^ reqcap;
 431
 432                 /*
 433                  * The networking core already rejects attempts to
 434                  * enable capabilities we don't have.  We still have
 435                  * to reject attempts to disable capabilities that we
 436                  * can't (yet) disable.
 437                  */
 438                 KASSERT((reqcap & ~ifp->if_capabilities) == 0,
 439                     ("Unsupported capabilities 0x%x requested 0x%x vs "
 440                      "supported 0x%x",
 441                      reqcap & ~ifp->if_capabilities,
 442                      reqcap , ifp->if_capabilities));
 443                 if (capchg_mask & SFXGE_CAP_FIXED) {
 444                         error = EINVAL;
 445                         SFXGE_ADAPTER_UNLOCK(sc);
 446                         break;
 447                 }
 448
 449                 /* Check request before any changes */
 450                 if ((capchg_mask & IFCAP_TSO4) &&
 451                     (reqcap & (IFCAP_TSO4 | IFCAP_TXCSUM)) == IFCAP_TSO4) {
 452                         error = EAGAIN;
 453                         SFXGE_ADAPTER_UNLOCK(sc);
 454                         if_printf(ifp, "enable txcsum before tso4\n");
 455                         break;
 456                 }
 457                 if ((capchg_mask & IFCAP_TSO6) &&
 458                     (reqcap & (IFCAP_TSO6 | IFCAP_TXCSUM_IPV6)) == IFCAP_TSO6) {
 459                         error = EAGAIN;
 460                         SFXGE_ADAPTER_UNLOCK(sc);
 461                         if_printf(ifp, "enable txcsum6 before tso6\n");
 462                         break;
 463                 }
 464
 465                 if (reqcap & IFCAP_TXCSUM) {
 466                         ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP);
 467                 } else {
 468                         ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP);
 469                         if (reqcap & IFCAP_TSO4) {
 470                                 reqcap &= ~IFCAP_TSO4;
 471                                 if_printf(ifp,
 472                                     "tso4 disabled due to -txcsum\n");
 473                         }
 474                 }
 475                 if (reqcap & IFCAP_TXCSUM_IPV6) {
 476                         ifp->if_hwassist |= (CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
 477                 } else {
 478                         ifp->if_hwassist &= ~(CSUM_TCP_IPV6 | CSUM_UDP_IPV6);
 479                         if (reqcap & IFCAP_TSO6) {
 480                                 reqcap &= ~IFCAP_TSO6;
 481                                 if_printf(ifp,
 482                                     "tso6 disabled due to -txcsum6\n");
 483                         }
 484                 }
 485
 486                 /*
 487                  * The kernel takes both IFCAP_TSOx and CSUM_TSO into
 488                  * account before using TSO. So, we do not touch
 489                  * checksum flags when IFCAP_TSOx is modified.
 490                  * Note that CSUM_TSO is (CSUM_IP_TSO|CSUM_IP6_TSO),
 491                  * but both bits are set in IPv4 and IPv6 mbufs.
 492                  */
 493
 494                 ifp->if_capenable = reqcap;
 495
 496                 SFXGE_ADAPTER_UNLOCK(sc);
 497                 break;
 498         }
 499         case SIOCSIFMEDIA:
 500         case SIOCGIFMEDIA:
 501                 error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
 502                 break;
 503         case SIOCGPRIVATE_0:
 504                 error = priv_check(curthread, PRIV_DRIVER);
 505                 if (error != 0)
 506                         break;
 507                 error = copyin(ifr->ifr_data, &ioc, sizeof(ioc));
 508                 if (error != 0)
 509                         return (error);
 510                 error = sfxge_private_ioctl(sc, &ioc);
 511                 if (error == 0) {
 512                         error = copyout(&ioc, ifr->ifr_data, sizeof(ioc));
 513                 }
 514                 break;
 515         default:
 516                 error = ether_ioctl(ifp, command, data);
 517         }
 518
 519         return (error);
 520 }
 521
 522 static void
 523 sfxge_ifnet_fini(struct ifnet *ifp)
 524 {
 525         struct sfxge_softc *sc = ifp->if_softc;
 526
 527         SFXGE_ADAPTER_LOCK(sc);
 528         sfxge_stop(sc);
 529         SFXGE_ADAPTER_UNLOCK(sc);
 530
 531         ifmedia_removeall(&sc->media);
 532         ether_ifdetach(ifp);
 533         if_free(ifp);
 534 }
 535
 536 static int
 537 sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc)
 538 {
 539         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp);
 540         device_t dev;
 541         int rc;
 542
 543         dev = sc->dev;
 544         sc->ifnet = ifp;
 545
 546         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 547         ifp->if_init = sfxge_if_init;
 548         ifp->if_softc = sc;
 549         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 550         ifp->if_ioctl = sfxge_if_ioctl;
 551
 552         ifp->if_capabilities = SFXGE_CAP;
 553         ifp->if_capenable = SFXGE_CAP_ENABLE;
 554         ifp->if_hw_tsomax = SFXGE_TSO_MAX_SIZE;
 555         ifp->if_hw_tsomaxsegcount = SFXGE_TX_MAPPING_MAX_SEG;
 556         ifp->if_hw_tsomaxsegsize = PAGE_SIZE;
 557
 558 #ifdef SFXGE_LRO
 559         ifp->if_capabilities |= IFCAP_LRO;
 560         ifp->if_capenable |= IFCAP_LRO;
 561 #endif
 562
 563         if (encp->enc_hw_tx_insert_vlan_enabled) {
 564                 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING;
 565                 ifp->if_capenable |= IFCAP_VLAN_HWTAGGING;
 566         }
 567         ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO |
 568                            CSUM_TCP_IPV6 | CSUM_UDP_IPV6;
 569
 570         ether_ifattach(ifp, encp->enc_mac_addr);
 571
 572         ifp->if_transmit = sfxge_if_transmit;
 573         ifp->if_qflush = sfxge_if_qflush;
 574
 575         ifp->if_get_counter = sfxge_get_counter;
 576
 577         DBGPRINT(sc->dev, "ifmedia_init");
 578         if ((rc = sfxge_port_ifmedia_init(sc)) != 0)
 579                 goto fail;
 580
 581         return (0);
 582
 583 fail:
 584         ether_ifdetach(sc->ifnet);
 585         return (rc);
 586 }
 587
 588 void
 589 sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp)
 590 {
 591         KASSERT(sc->buffer_table_next + n <=
 592                 efx_nic_cfg_get(sc->enp)->enc_buftbl_limit,
 593                 ("buffer table full"));
 594
 595         *idp = sc->buffer_table_next;
 596         sc->buffer_table_next += n;
 597 }
 598
 599 static int
 600 sfxge_bar_init(struct sfxge_softc *sc)
 601 {
 602         efsys_bar_t *esbp = &sc->bar;
 603
 604         esbp->esb_rid = PCIR_BAR(EFX_MEM_BAR);
 605         if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
 606             &esbp->esb_rid, RF_ACTIVE)) == NULL) {
 607                 device_printf(sc->dev, "Cannot allocate BAR region %d\n",
 608                     EFX_MEM_BAR);
 609                 return (ENXIO);
 610         }
 611         esbp->esb_tag = rman_get_bustag(esbp->esb_res);
 612         esbp->esb_handle = rman_get_bushandle(esbp->esb_res);
 613
 614         SFXGE_BAR_LOCK_INIT(esbp, device_get_nameunit(sc->dev));
 615
 616         return (0);
 617 }
 618
 619 static void
 620 sfxge_bar_fini(struct sfxge_softc *sc)
 621 {
 622         efsys_bar_t *esbp = &sc->bar;
 623
 624         bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid,
 625             esbp->esb_res);
 626         SFXGE_BAR_LOCK_DESTROY(esbp);
 627 }
 628
 629 static int
 630 sfxge_create(struct sfxge_softc *sc)
 631 {
 632         device_t dev;
 633         efx_nic_t *enp;
 634         int error;
 635         char rss_param_name[sizeof(SFXGE_PARAM(%d.max_rss_channels))];
 636 #if EFSYS_OPT_MCDI_LOGGING
 637         char mcdi_log_param_name[sizeof(SFXGE_PARAM(%d.mcdi_logging))];
 638 #endif
 639
 640         dev = sc->dev;
 641
 642         SFXGE_ADAPTER_LOCK_INIT(sc, device_get_nameunit(sc->dev));
 643
 644         sc->max_rss_channels = 0;
 645         snprintf(rss_param_name, sizeof(rss_param_name),
 646                  SFXGE_PARAM(%d.max_rss_channels),
 647                  (int)device_get_unit(dev));
 648         TUNABLE_INT_FETCH(rss_param_name, &sc->max_rss_channels);
 649 #if EFSYS_OPT_MCDI_LOGGING
 650         sc->mcdi_logging = sfxge_mcdi_logging;
 651         snprintf(mcdi_log_param_name, sizeof(mcdi_log_param_name),
 652                  SFXGE_PARAM(%d.mcdi_logging),
 653                  (int)device_get_unit(dev));
 654         TUNABLE_INT_FETCH(mcdi_log_param_name, &sc->mcdi_logging);
 655 #endif
 656
 657         sc->stats_node = SYSCTL_ADD_NODE(
 658                 device_get_sysctl_ctx(dev),
 659                 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 660                 OID_AUTO, "stats", CTLFLAG_RD, NULL, "Statistics");
 661         if (sc->stats_node == NULL) {
 662                 error = ENOMEM;
 663                 goto fail;
 664         }
 665
 666         TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc);
 667
 668         (void) pci_enable_busmaster(dev);
 669
 670         /* Initialize DMA mappings. */
 671         DBGPRINT(sc->dev, "dma_init...");
 672         if ((error = sfxge_dma_init(sc)) != 0)
 673                 goto fail;
 674
 675         /* Map the device registers. */
 676         DBGPRINT(sc->dev, "bar_init...");
 677         if ((error = sfxge_bar_init(sc)) != 0)
 678                 goto fail;
 679
 680         error = efx_family(pci_get_vendor(dev), pci_get_device(dev),
 681             &sc->family);
 682         KASSERT(error == 0, ("Family should be filtered by sfxge_probe()"));
 683
 684         DBGPRINT(sc->dev, "nic_create...");
 685
 686         /* Create the common code nic object. */
 687         SFXGE_EFSYS_LOCK_INIT(&sc->enp_lock,
 688                               device_get_nameunit(sc->dev), "nic");
 689         if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc,
 690             &sc->bar, &sc->enp_lock, &enp)) != 0)
 691                 goto fail3;
 692         sc->enp = enp;
 693
 694         if (!ISP2(sfxge_rx_ring_entries) ||
 695             (sfxge_rx_ring_entries < EFX_RXQ_MINNDESCS) ||
 696             (sfxge_rx_ring_entries > EFX_RXQ_MAXNDESCS)) {
 697                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 698                     SFXGE_PARAM_RX_RING, sfxge_rx_ring_entries,
 699                     EFX_RXQ_MINNDESCS, EFX_RXQ_MAXNDESCS);
 700                 error = EINVAL;
 701                 goto fail_rx_ring_entries;
 702         }
 703         sc->rxq_entries = sfxge_rx_ring_entries;
 704
 705         if (!ISP2(sfxge_tx_ring_entries) ||
 706             (sfxge_tx_ring_entries < EFX_TXQ_MINNDESCS) ||
 707             (sfxge_tx_ring_entries > EFX_TXQ_MAXNDESCS(efx_nic_cfg_get(enp)))) {
 708                 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u",
 709                     SFXGE_PARAM_TX_RING, sfxge_tx_ring_entries,
 710                     EFX_TXQ_MINNDESCS, EFX_TXQ_MAXNDESCS(efx_nic_cfg_get(enp)));
 711                 error = EINVAL;
 712                 goto fail_tx_ring_entries;
 713         }
 714         sc->txq_entries = sfxge_tx_ring_entries;
 715
 716         /* Initialize MCDI to talk to the microcontroller. */
 717         DBGPRINT(sc->dev, "mcdi_init...");
 718         if ((error = sfxge_mcdi_init(sc)) != 0)
 719                 goto fail4;
 720
 721         /* Probe the NIC and build the configuration data area. */
 722         DBGPRINT(sc->dev, "nic_probe...");
 723         if ((error = efx_nic_probe(enp)) != 0)
 724                 goto fail5;
 725
 726         SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
 727                           SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 728                           OID_AUTO, "version", CTLFLAG_RD,
 729                           SFXGE_VERSION_STRING, 0,
 730                           "Driver version");
 731
 732         SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
 733                         SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
 734                         OID_AUTO, "phy_type", CTLFLAG_RD,
 735                         NULL, efx_nic_cfg_get(enp)->enc_phy_type,
 736                         "PHY type");
 737
 738         /* Initialize the NVRAM. */
 739         DBGPRINT(sc->dev, "nvram_init...");
 740         if ((error = efx_nvram_init(enp)) != 0)
 741                 goto fail6;
 742
 743         /* Initialize the VPD. */
 744         DBGPRINT(sc->dev, "vpd_init...");
 745         if ((error = efx_vpd_init(enp)) != 0)
 746                 goto fail7;
 747
 748         efx_mcdi_new_epoch(enp);
 749
 750         /* Reset the NIC. */
 751         DBGPRINT(sc->dev, "nic_reset...");
 752         if ((error = efx_nic_reset(enp)) != 0)
 753                 goto fail8;
 754
 755         /* Initialize buffer table allocation. */
 756         sc->buffer_table_next = 0;
 757
 758         /*
 759          * Guarantee minimum and estimate maximum number of event queues
 760          * to take it into account when MSI-X interrupts are allocated.
 761          * It initializes NIC and keeps it initialized on success.
 762          */
 763         if ((error = sfxge_estimate_rsrc_limits(sc)) != 0)
 764                 goto fail8;
 765
 766         /* Set up interrupts. */
 767         DBGPRINT(sc->dev, "intr_init...");
 768         if ((error = sfxge_intr_init(sc)) != 0)
 769                 goto fail9;
 770
 771         /* Initialize event processing state. */
 772         DBGPRINT(sc->dev, "ev_init...");
 773         if ((error = sfxge_ev_init(sc)) != 0)
 774                 goto fail11;
 775
 776         /* Initialize port state. */
 777         DBGPRINT(sc->dev, "port_init...");
 778         if ((error = sfxge_port_init(sc)) != 0)
 779                 goto fail12;
 780
 781         /* Initialize receive state. */
 782         DBGPRINT(sc->dev, "rx_init...");
 783         if ((error = sfxge_rx_init(sc)) != 0)
 784                 goto fail13;
 785
 786         /* Initialize transmit state. */
 787         DBGPRINT(sc->dev, "tx_init...");
 788         if ((error = sfxge_tx_init(sc)) != 0)
 789                 goto fail14;
 790
 791         sc->init_state = SFXGE_INITIALIZED;
 792
 793         DBGPRINT(sc->dev, "success");
 794         return (0);
 795
 796 fail14:
 797         sfxge_rx_fini(sc);
 798
 799 fail13:
 800         sfxge_port_fini(sc);
 801
 802 fail12:
 803         sfxge_ev_fini(sc);
 804
 805 fail11:
 806         sfxge_intr_fini(sc);
 807
 808 fail9:
 809         efx_nic_fini(sc->enp);
 810
 811 fail8:
 812         efx_vpd_fini(enp);
 813
 814 fail7:
 815         efx_nvram_fini(enp);
 816
 817 fail6:
 818         efx_nic_unprobe(enp);
 819
 820 fail5:
 821         sfxge_mcdi_fini(sc);
 822
 823 fail4:
 824 fail_tx_ring_entries:
 825 fail_rx_ring_entries:
 826         sc->enp = NULL;
 827         efx_nic_destroy(enp);
 828         SFXGE_EFSYS_LOCK_DESTROY(&sc->enp_lock);
 829
 830 fail3:
 831         sfxge_bar_fini(sc);
 832         (void) pci_disable_busmaster(sc->dev);
 833
 834 fail:
 835         DBGPRINT(sc->dev, "failed %d", error);
 836         sc->dev = NULL;
 837         SFXGE_ADAPTER_LOCK_DESTROY(sc);
 838         return (error);
 839 }
 840
 841 static void
 842 sfxge_destroy(struct sfxge_softc *sc)
 843 {
 844         efx_nic_t *enp;
 845
 846         /* Clean up transmit state. */
 847         sfxge_tx_fini(sc);
 848
 849         /* Clean up receive state. */
 850         sfxge_rx_fini(sc);
 851
 852         /* Clean up port state. */
 853         sfxge_port_fini(sc);
 854
 855         /* Clean up event processing state. */
 856         sfxge_ev_fini(sc);
 857
 858         /* Clean up interrupts. */
 859         sfxge_intr_fini(sc);
 860
 861         /* Tear down common code subsystems. */
 862         efx_nic_reset(sc->enp);
 863         efx_vpd_fini(sc->enp);
 864         efx_nvram_fini(sc->enp);
 865         efx_nic_unprobe(sc->enp);
 866
 867         /* Tear down MCDI. */
 868         sfxge_mcdi_fini(sc);
 869
 870         /* Destroy common code context. */
 871         enp = sc->enp;
 872         sc->enp = NULL;
 873         efx_nic_destroy(enp);
 874
 875         /* Free DMA memory. */
 876         sfxge_dma_fini(sc);
 877
 878         /* Free mapped BARs. */
 879         sfxge_bar_fini(sc);
 880
 881         (void) pci_disable_busmaster(sc->dev);
 882
 883         taskqueue_drain(taskqueue_thread, &sc->task_reset);
 884
 885         /* Destroy the softc lock. */
 886         SFXGE_ADAPTER_LOCK_DESTROY(sc);
 887 }
 888
 889 static int
 890 sfxge_vpd_handler(SYSCTL_HANDLER_ARGS)
 891 {
 892         struct sfxge_softc *sc = arg1;
 893         efx_vpd_value_t value;
 894         int rc;
 895
 896         value.evv_tag = arg2 >> 16;
 897         value.evv_keyword = arg2 & 0xffff;
 898         if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value))
 899             != 0)
 900                 return (rc);
 901
 902         return (SYSCTL_OUT(req, value.evv_value, value.evv_length));
 903 }
 904
 905 static void
 906 sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list,
 907                   efx_vpd_tag_t tag, const char *keyword)
 908 {
 909         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 910         efx_vpd_value_t value;
 911
 912         /* Check whether VPD tag/keyword is present */
 913         value.evv_tag = tag;
 914         value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]);
 915         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0)
 916                 return;
 917
 918         SYSCTL_ADD_PROC(
 919                 ctx, list, OID_AUTO, keyword, CTLTYPE_STRING|CTLFLAG_RD,
 920                 sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]),
 921                 sfxge_vpd_handler, "A", "");
 922 }
 923
 924 static int
 925 sfxge_vpd_init(struct sfxge_softc *sc)
 926 {
 927         struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
 928         struct sysctl_oid *vpd_node;
 929         struct sysctl_oid_list *vpd_list;
 930         char keyword[3];
 931         efx_vpd_value_t value;
 932         int rc;
 933
 934         if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0) {
 935                 /*
 936                  * Unpriviledged functions deny VPD access.
 937                  * Simply skip VPD in this case.
 938                  */
 939                 if (rc == EACCES)
 940                         goto done;
 941                 goto fail;
 942         }
 943         sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK);
 944         if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0)
 945                 goto fail2;
 946
 947         /* Copy ID (product name) into device description, and log it. */
 948         value.evv_tag = EFX_VPD_ID;
 949         if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) {
 950                 value.evv_value[value.evv_length] = 0;
 951                 device_set_desc_copy(sc->dev, value.evv_value);
 952                 device_printf(sc->dev, "%s\n", value.evv_value);
 953         }
 954
 955         vpd_node = SYSCTL_ADD_NODE(
 956                 ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)),
 957                 OID_AUTO, "vpd", CTLFLAG_RD, NULL, "Vital Product Data");
 958         vpd_list = SYSCTL_CHILDREN(vpd_node);
 959
 960         /* Add sysctls for all expected and any vendor-defined keywords. */
 961         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN");
 962         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC");
 963         sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN");
 964         keyword[0] = 'V';
 965         keyword[2] = 0;
 966         for (keyword[1] = '0'; keyword[1] <= '9'; keyword[1]++)
 967                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 968         for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++)
 969                 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
 970
 971 done:
 972         return (0);
 973
 974 fail2:
 975         free(sc->vpd_data, M_SFXGE);
 976 fail:
 977         return (rc);
 978 }
 979
 980 static void
 981 sfxge_vpd_fini(struct sfxge_softc *sc)
 982 {
 983         free(sc->vpd_data, M_SFXGE);
 984 }
 985
 986 static void
 987 sfxge_reset(void *arg, int npending)
 988 {
 989         struct sfxge_softc *sc;
 990         int rc;
 991         unsigned attempt;
 992
 993         (void)npending;
 994
 995         sc = (struct sfxge_softc *)arg;
 996
 997         SFXGE_ADAPTER_LOCK(sc);
 998
 999         if (sc->init_state != SFXGE_STARTED)
1000                 goto done;
1001
1002         sfxge_stop(sc);
1003         efx_nic_reset(sc->enp);
1004         for (attempt = 0; attempt < sfxge_restart_attempts; ++attempt) {
1005                 if ((rc = sfxge_start(sc)) == 0)
1006                         goto done;
1007
1008                 device_printf(sc->dev, "start on reset failed (%d)\n", rc);
1009                 DELAY(100000);
1010         }
1011
1012         device_printf(sc->dev, "reset failed; interface is now stopped\n");
1013
1014 done:
1015         SFXGE_ADAPTER_UNLOCK(sc);
1016 }
1017
1018 void
1019 sfxge_schedule_reset(struct sfxge_softc *sc)
1020 {
1021         taskqueue_enqueue(taskqueue_thread, &sc->task_reset);
1022 }
1023
1024 static int
1025 sfxge_attach(device_t dev)
1026 {
1027         struct sfxge_softc *sc;
1028         struct ifnet *ifp;
1029         int error;
1030
1031         sc = device_get_softc(dev);
1032         sc->dev = dev;
1033
1034         /* Allocate ifnet. */
1035         ifp = if_alloc(IFT_ETHER);
1036         if (ifp == NULL) {
1037                 device_printf(dev, "Couldn't allocate ifnet\n");
1038                 error = ENOMEM;
1039                 goto fail;
1040         }
1041         sc->ifnet = ifp;
1042
1043         /* Initialize hardware. */
1044         DBGPRINT(sc->dev, "create nic");
1045         if ((error = sfxge_create(sc)) != 0)
1046                 goto fail2;
1047
1048         /* Create the ifnet for the port. */
1049         DBGPRINT(sc->dev, "init ifnet");
1050         if ((error = sfxge_ifnet_init(ifp, sc)) != 0)
1051                 goto fail3;
1052
1053         DBGPRINT(sc->dev, "init vpd");
1054         if ((error = sfxge_vpd_init(sc)) != 0)
1055                 goto fail4;
1056
1057         /*
1058          * NIC is initialized inside sfxge_create() and kept inialized
1059          * to be able to initialize port to discover media types in
1060          * sfxge_ifnet_init().
1061          */
1062         efx_nic_fini(sc->enp);
1063
1064         sc->init_state = SFXGE_REGISTERED;
1065
1066         DBGPRINT(sc->dev, "success");
1067         return (0);
1068
1069 fail4:
1070         sfxge_ifnet_fini(ifp);
1071 fail3:
1072         efx_nic_fini(sc->enp);
1073         sfxge_destroy(sc);
1074
1075 fail2:
1076         if_free(sc->ifnet);
1077
1078 fail:
1079         DBGPRINT(sc->dev, "failed %d", error);
1080         return (error);
1081 }
1082
1083 static int
1084 sfxge_detach(device_t dev)
1085 {
1086         struct sfxge_softc *sc;
1087
1088         sc = device_get_softc(dev);
1089
1090         sfxge_vpd_fini(sc);
1091
1092         /* Destroy the ifnet. */
1093         sfxge_ifnet_fini(sc->ifnet);
1094
1095         /* Tear down hardware. */
1096         sfxge_destroy(sc);
1097
1098         return (0);
1099 }
1100
1101 static int
1102 sfxge_probe(device_t dev)
1103 {
1104         uint16_t pci_vendor_id;
1105         uint16_t pci_device_id;
1106         efx_family_t family;
1107         int rc;
1108
1109         pci_vendor_id = pci_get_vendor(dev);
1110         pci_device_id = pci_get_device(dev);
1111
1112         DBGPRINT(dev, "PCI ID %04x:%04x", pci_vendor_id, pci_device_id);
1113         rc = efx_family(pci_vendor_id, pci_device_id, &family);
1114         if (rc != 0) {
1115                 DBGPRINT(dev, "efx_family fail %d", rc);
1116                 return (ENXIO);
1117         }
1118
1119         if (family == EFX_FAMILY_SIENA) {
1120                 device_set_desc(dev, "Solarflare SFC9000 family");
1121                 return (0);
1122         }
1123
1124         if (family == EFX_FAMILY_HUNTINGTON) {
1125                 device_set_desc(dev, "Solarflare SFC9100 family");
1126                 return (0);
1127         }
1128
1129         DBGPRINT(dev, "impossible controller family %d", family);
1130         return (ENXIO);
1131 }
1132
1133 static device_method_t sfxge_methods[] = {
1134         DEVMETHOD(device_probe,         sfxge_probe),
1135         DEVMETHOD(device_attach,        sfxge_attach),
1136         DEVMETHOD(device_detach,        sfxge_detach),
1137
1138         DEVMETHOD_END
1139 };
1140
1141 static devclass_t sfxge_devclass;
1142
1143 static driver_t sfxge_driver = {
1144         "sfxge",
1145         sfxge_methods,
1146         sizeof(struct sfxge_softc)
1147 };
1148
1149 DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0);