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sys/dev/sfxge/sfxge.c
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1 /*- 2 * Copyright (c) 2010-2016 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: releng/11.2/sys/dev/sfxge/sfxge.c 332288 2018-04-08 16:54:07Z brooks $"); 36 37 #include "opt_rss.h" 38 39 #include <sys/param.h> 40 #include <sys/kernel.h> 41 #include <sys/bus.h> 42 #include <sys/rman.h> 43 #include <sys/lock.h> 44 #include <sys/module.h> 45 #include <sys/mutex.h> 46 #include <sys/smp.h> 47 #include <sys/socket.h> 48 #include <sys/taskqueue.h> 49 #include <sys/sockio.h> 50 #include <sys/sysctl.h> 51 #include <sys/priv.h> 52 #include <sys/syslog.h> 53 54 #include <dev/pci/pcireg.h> 55 #include <dev/pci/pcivar.h> 56 57 #include <net/ethernet.h> 58 #include <net/if.h> 59 #include <net/if_var.h> 60 #include <net/if_media.h> 61 #include <net/if_types.h> 62 63 #ifdef RSS 64 #include <net/rss_config.h> 65 #endif 66 67 #include "common/efx.h" 68 69 #include "sfxge.h" 70 #include "sfxge_rx.h" 71 #include "sfxge_ioc.h" 72 #include "sfxge_version.h" 73 74 #define SFXGE_CAP (IFCAP_VLAN_MTU | IFCAP_VLAN_HWCSUM | \ 75 IFCAP_RXCSUM | IFCAP_TXCSUM | \ 76 IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6 | \ 77 IFCAP_TSO4 | IFCAP_TSO6 | \ 78 IFCAP_JUMBO_MTU | \ 79 IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE | IFCAP_HWSTATS) 80 #define SFXGE_CAP_ENABLE SFXGE_CAP 81 #define SFXGE_CAP_FIXED (IFCAP_VLAN_MTU | \ 82 IFCAP_JUMBO_MTU | IFCAP_LINKSTATE | IFCAP_HWSTATS) 83 84 MALLOC_DEFINE(M_SFXGE, "sfxge", "Solarflare 10GigE driver"); 85 86 87 SYSCTL_NODE(_hw, OID_AUTO, sfxge, CTLFLAG_RD, 0, 88 "SFXGE driver parameters"); 89 90 #define SFXGE_PARAM_RX_RING SFXGE_PARAM(rx_ring) 91 static int sfxge_rx_ring_entries = SFXGE_NDESCS; 92 TUNABLE_INT(SFXGE_PARAM_RX_RING, &sfxge_rx_ring_entries); 93 SYSCTL_INT(_hw_sfxge, OID_AUTO, rx_ring, CTLFLAG_RDTUN, 94 &sfxge_rx_ring_entries, 0, 95 "Maximum number of descriptors in a receive ring"); 96 97 #define SFXGE_PARAM_TX_RING SFXGE_PARAM(tx_ring) 98 static int sfxge_tx_ring_entries = SFXGE_NDESCS; 99 TUNABLE_INT(SFXGE_PARAM_TX_RING, &sfxge_tx_ring_entries); 100 SYSCTL_INT(_hw_sfxge, OID_AUTO, tx_ring, CTLFLAG_RDTUN, 101 &sfxge_tx_ring_entries, 0, 102 "Maximum number of descriptors in a transmit ring"); 103 104 #define SFXGE_PARAM_RESTART_ATTEMPTS SFXGE_PARAM(restart_attempts) 105 static int sfxge_restart_attempts = 3; 106 TUNABLE_INT(SFXGE_PARAM_RESTART_ATTEMPTS, &sfxge_restart_attempts); 107 SYSCTL_INT(_hw_sfxge, OID_AUTO, restart_attempts, CTLFLAG_RDTUN, 108 &sfxge_restart_attempts, 0, 109 "Maximum number of attempts to bring interface up after reset"); 110 111 #if EFSYS_OPT_MCDI_LOGGING 112 #define SFXGE_PARAM_MCDI_LOGGING SFXGE_PARAM(mcdi_logging) 113 static int sfxge_mcdi_logging = 0; 114 TUNABLE_INT(SFXGE_PARAM_MCDI_LOGGING, &sfxge_mcdi_logging); 115 #endif 116 117 static void 118 sfxge_reset(void *arg, int npending); 119 120 static int 121 sfxge_estimate_rsrc_limits(struct sfxge_softc *sc) 122 { 123 efx_drv_limits_t limits; 124 int rc; 125 unsigned int evq_max; 126 uint32_t evq_allocated; 127 uint32_t rxq_allocated; 128 uint32_t txq_allocated; 129 130 /* 131 * Limit the number of event queues to: 132 * - number of CPUs 133 * - hardwire maximum RSS channels 134 * - administratively specified maximum RSS channels 135 */ 136 #ifdef RSS 137 /* 138 * Avoid extra limitations so that the number of queues 139 * may be configured at administrator's will 140 */ 141 evq_max = MIN(MAX(rss_getnumbuckets(), 1), EFX_MAXRSS); 142 #else 143 evq_max = MIN(mp_ncpus, EFX_MAXRSS); 144 #endif 145 if (sc->max_rss_channels > 0) 146 evq_max = MIN(evq_max, sc->max_rss_channels); 147 148 memset(&limits, 0, sizeof(limits)); 149 150 limits.edl_min_evq_count = 1; 151 limits.edl_max_evq_count = evq_max; 152 limits.edl_min_txq_count = SFXGE_TXQ_NTYPES; 153 limits.edl_max_txq_count = evq_max + SFXGE_TXQ_NTYPES - 1; 154 limits.edl_min_rxq_count = 1; 155 limits.edl_max_rxq_count = evq_max; 156 157 efx_nic_set_drv_limits(sc->enp, &limits); 158 159 if ((rc = efx_nic_init(sc->enp)) != 0) 160 return (rc); 161 162 rc = efx_nic_get_vi_pool(sc->enp, &evq_allocated, &rxq_allocated, 163 &txq_allocated); 164 if (rc != 0) { 165 efx_nic_fini(sc->enp); 166 return (rc); 167 } 168 169 KASSERT(txq_allocated >= SFXGE_TXQ_NTYPES, 170 ("txq_allocated < SFXGE_TXQ_NTYPES")); 171 172 sc->evq_max = MIN(evq_allocated, evq_max); 173 sc->evq_max = MIN(rxq_allocated, sc->evq_max); 174 sc->evq_max = MIN(txq_allocated - (SFXGE_TXQ_NTYPES - 1), 175 sc->evq_max); 176 177 KASSERT(sc->evq_max <= evq_max, 178 ("allocated more than maximum requested")); 179 180 #ifdef RSS 181 if (sc->evq_max < rss_getnumbuckets()) 182 device_printf(sc->dev, "The number of allocated queues (%u) " 183 "is less than the number of RSS buckets (%u); " 184 "performance degradation might be observed", 185 sc->evq_max, rss_getnumbuckets()); 186 #endif 187 188 /* 189 * NIC is kept initialized in the case of success to be able to 190 * initialize port to find out media types. 191 */ 192 return (0); 193 } 194 195 static int 196 sfxge_set_drv_limits(struct sfxge_softc *sc) 197 { 198 efx_drv_limits_t limits; 199 200 memset(&limits, 0, sizeof(limits)); 201 202 /* Limits are strict since take into account initial estimation */ 203 limits.edl_min_evq_count = limits.edl_max_evq_count = 204 sc->intr.n_alloc; 205 limits.edl_min_txq_count = limits.edl_max_txq_count = 206 sc->intr.n_alloc + SFXGE_TXQ_NTYPES - 1; 207 limits.edl_min_rxq_count = limits.edl_max_rxq_count = 208 sc->intr.n_alloc; 209 210 return (efx_nic_set_drv_limits(sc->enp, &limits)); 211 } 212 213 static int 214 sfxge_start(struct sfxge_softc *sc) 215 { 216 int rc; 217 218 SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc); 219 220 if (sc->init_state == SFXGE_STARTED) 221 return (0); 222 223 if (sc->init_state != SFXGE_REGISTERED) { 224 rc = EINVAL; 225 goto fail; 226 } 227 228 /* Set required resource limits */ 229 if ((rc = sfxge_set_drv_limits(sc)) != 0) 230 goto fail; 231 232 if ((rc = efx_nic_init(sc->enp)) != 0) 233 goto fail; 234 235 /* Start processing interrupts. */ 236 if ((rc = sfxge_intr_start(sc)) != 0) 237 goto fail2; 238 239 /* Start processing events. */ 240 if ((rc = sfxge_ev_start(sc)) != 0) 241 goto fail3; 242 243 /* Fire up the port. */ 244 if ((rc = sfxge_port_start(sc)) != 0) 245 goto fail4; 246 247 /* Start the receiver side. */ 248 if ((rc = sfxge_rx_start(sc)) != 0) 249 goto fail5; 250 251 /* Start the transmitter side. */ 252 if ((rc = sfxge_tx_start(sc)) != 0) 253 goto fail6; 254 255 sc->init_state = SFXGE_STARTED; 256 257 /* Tell the stack we're running. */ 258 sc->ifnet->if_drv_flags |= IFF_DRV_RUNNING; 259 sc->ifnet->if_drv_flags &= ~IFF_DRV_OACTIVE; 260 261 return (0); 262 263 fail6: 264 sfxge_rx_stop(sc); 265 266 fail5: 267 sfxge_port_stop(sc); 268 269 fail4: 270 sfxge_ev_stop(sc); 271 272 fail3: 273 sfxge_intr_stop(sc); 274 275 fail2: 276 efx_nic_fini(sc->enp); 277 278 fail: 279 device_printf(sc->dev, "sfxge_start: %d\n", rc); 280 281 return (rc); 282 } 283 284 static void 285 sfxge_if_init(void *arg) 286 { 287 struct sfxge_softc *sc; 288 289 sc = (struct sfxge_softc *)arg; 290 291 SFXGE_ADAPTER_LOCK(sc); 292 (void)sfxge_start(sc); 293 SFXGE_ADAPTER_UNLOCK(sc); 294 } 295 296 static void 297 sfxge_stop(struct sfxge_softc *sc) 298 { 299 SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc); 300 301 if (sc->init_state != SFXGE_STARTED) 302 return; 303 304 sc->init_state = SFXGE_REGISTERED; 305 306 /* Stop the transmitter. */ 307 sfxge_tx_stop(sc); 308 309 /* Stop the receiver. */ 310 sfxge_rx_stop(sc); 311 312 /* Stop the port. */ 313 sfxge_port_stop(sc); 314 315 /* Stop processing events. */ 316 sfxge_ev_stop(sc); 317 318 /* Stop processing interrupts. */ 319 sfxge_intr_stop(sc); 320 321 efx_nic_fini(sc->enp); 322 323 sc->ifnet->if_drv_flags &= ~IFF_DRV_RUNNING; 324 } 325 326 327 static int 328 sfxge_vpd_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ioc) 329 { 330 efx_vpd_value_t value; 331 int rc = 0; 332 333 switch (ioc->u.vpd.op) { 334 case SFXGE_VPD_OP_GET_KEYWORD: 335 value.evv_tag = ioc->u.vpd.tag; 336 value.evv_keyword = ioc->u.vpd.keyword; 337 rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value); 338 if (rc != 0) 339 break; 340 ioc->u.vpd.len = MIN(ioc->u.vpd.len, value.evv_length); 341 if (ioc->u.vpd.payload != 0) { 342 rc = copyout(value.evv_value, ioc->u.vpd.payload, 343 ioc->u.vpd.len); 344 } 345 break; 346 case SFXGE_VPD_OP_SET_KEYWORD: 347 if (ioc->u.vpd.len > sizeof(value.evv_value)) 348 return (EINVAL); 349 value.evv_tag = ioc->u.vpd.tag; 350 value.evv_keyword = ioc->u.vpd.keyword; 351 value.evv_length = ioc->u.vpd.len; 352 rc = copyin(ioc->u.vpd.payload, value.evv_value, value.evv_length); 353 if (rc != 0) 354 break; 355 rc = efx_vpd_set(sc->enp, sc->vpd_data, sc->vpd_size, &value); 356 if (rc != 0) 357 break; 358 rc = efx_vpd_verify(sc->enp, sc->vpd_data, sc->vpd_size); 359 if (rc != 0) 360 break; 361 rc = efx_vpd_write(sc->enp, sc->vpd_data, sc->vpd_size); 362 break; 363 default: 364 rc = EOPNOTSUPP; 365 break; 366 } 367 368 return (rc); 369 } 370 371 static int 372 sfxge_private_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ioc) 373 { 374 switch (ioc->op) { 375 case SFXGE_MCDI_IOC: 376 return (sfxge_mcdi_ioctl(sc, ioc)); 377 case SFXGE_NVRAM_IOC: 378 return (sfxge_nvram_ioctl(sc, ioc)); 379 case SFXGE_VPD_IOC: 380 return (sfxge_vpd_ioctl(sc, ioc)); 381 default: 382 return (EOPNOTSUPP); 383 } 384 } 385 386 387 static int 388 sfxge_if_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data) 389 { 390 struct sfxge_softc *sc; 391 struct ifreq *ifr; 392 sfxge_ioc_t ioc; 393 int error; 394 395 ifr = (struct ifreq *)data; 396 sc = ifp->if_softc; 397 error = 0; 398 399 switch (command) { 400 case SIOCSIFFLAGS: 401 SFXGE_ADAPTER_LOCK(sc); 402 if (ifp->if_flags & IFF_UP) { 403 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 404 if ((ifp->if_flags ^ sc->if_flags) & 405 (IFF_PROMISC | IFF_ALLMULTI)) { 406 sfxge_mac_filter_set(sc); 407 } 408 } else 409 sfxge_start(sc); 410 } else 411 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 412 sfxge_stop(sc); 413 sc->if_flags = ifp->if_flags; 414 SFXGE_ADAPTER_UNLOCK(sc); 415 break; 416 case SIOCSIFMTU: 417 if (ifr->ifr_mtu == ifp->if_mtu) { 418 /* Nothing to do */ 419 error = 0; 420 } else if (ifr->ifr_mtu > SFXGE_MAX_MTU) { 421 error = EINVAL; 422 } else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 423 ifp->if_mtu = ifr->ifr_mtu; 424 error = 0; 425 } else { 426 /* Restart required */ 427 SFXGE_ADAPTER_LOCK(sc); 428 sfxge_stop(sc); 429 ifp->if_mtu = ifr->ifr_mtu; 430 error = sfxge_start(sc); 431 SFXGE_ADAPTER_UNLOCK(sc); 432 if (error != 0) { 433 ifp->if_flags &= ~IFF_UP; 434 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 435 if_down(ifp); 436 } 437 } 438 break; 439 case SIOCADDMULTI: 440 case SIOCDELMULTI: 441 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 442 sfxge_mac_filter_set(sc); 443 break; 444 case SIOCSIFCAP: 445 { 446 int reqcap = ifr->ifr_reqcap; 447 int capchg_mask; 448 449 SFXGE_ADAPTER_LOCK(sc); 450 451 /* Capabilities to be changed in accordance with request */ 452 capchg_mask = ifp->if_capenable ^ reqcap; 453 454 /* 455 * The networking core already rejects attempts to 456 * enable capabilities we don't have. We still have 457 * to reject attempts to disable capabilities that we 458 * can't (yet) disable. 459 */ 460 KASSERT((reqcap & ~ifp->if_capabilities) == 0, 461 ("Unsupported capabilities 0x%x requested 0x%x vs " 462 "supported 0x%x", 463 reqcap & ~ifp->if_capabilities, 464 reqcap , ifp->if_capabilities)); 465 if (capchg_mask & SFXGE_CAP_FIXED) { 466 error = EINVAL; 467 SFXGE_ADAPTER_UNLOCK(sc); 468 break; 469 } 470 471 /* Check request before any changes */ 472 if ((capchg_mask & IFCAP_TSO4) && 473 (reqcap & (IFCAP_TSO4 | IFCAP_TXCSUM)) == IFCAP_TSO4) { 474 error = EAGAIN; 475 SFXGE_ADAPTER_UNLOCK(sc); 476 if_printf(ifp, "enable txcsum before tso4\n"); 477 break; 478 } 479 if ((capchg_mask & IFCAP_TSO6) && 480 (reqcap & (IFCAP_TSO6 | IFCAP_TXCSUM_IPV6)) == IFCAP_TSO6) { 481 error = EAGAIN; 482 SFXGE_ADAPTER_UNLOCK(sc); 483 if_printf(ifp, "enable txcsum6 before tso6\n"); 484 break; 485 } 486 487 if (reqcap & IFCAP_TXCSUM) { 488 ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP); 489 } else { 490 ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP); 491 if (reqcap & IFCAP_TSO4) { 492 reqcap &= ~IFCAP_TSO4; 493 if_printf(ifp, 494 "tso4 disabled due to -txcsum\n"); 495 } 496 } 497 if (reqcap & IFCAP_TXCSUM_IPV6) { 498 ifp->if_hwassist |= (CSUM_TCP_IPV6 | CSUM_UDP_IPV6); 499 } else { 500 ifp->if_hwassist &= ~(CSUM_TCP_IPV6 | CSUM_UDP_IPV6); 501 if (reqcap & IFCAP_TSO6) { 502 reqcap &= ~IFCAP_TSO6; 503 if_printf(ifp, 504 "tso6 disabled due to -txcsum6\n"); 505 } 506 } 507 508 /* 509 * The kernel takes both IFCAP_TSOx and CSUM_TSO into 510 * account before using TSO. So, we do not touch 511 * checksum flags when IFCAP_TSOx is modified. 512 * Note that CSUM_TSO is (CSUM_IP_TSO|CSUM_IP6_TSO), 513 * but both bits are set in IPv4 and IPv6 mbufs. 514 */ 515 516 ifp->if_capenable = reqcap; 517 518 SFXGE_ADAPTER_UNLOCK(sc); 519 break; 520 } 521 case SIOCSIFMEDIA: 522 case SIOCGIFMEDIA: 523 error = ifmedia_ioctl(ifp, ifr, &sc->media, command); 524 break; 525 #ifdef SIOCGI2C 526 case SIOCGI2C: 527 { 528 struct ifi2creq i2c; 529 530 error = copyin(ifr_data_get_ptr(ifr), &i2c, sizeof(i2c)); 531 if (error != 0) 532 break; 533 534 if (i2c.len > sizeof(i2c.data)) { 535 error = EINVAL; 536 break; 537 } 538 539 SFXGE_ADAPTER_LOCK(sc); 540 error = efx_phy_module_get_info(sc->enp, i2c.dev_addr, 541 i2c.offset, i2c.len, 542 &i2c.data[0]); 543 SFXGE_ADAPTER_UNLOCK(sc); 544 if (error == 0) 545 error = copyout(&i2c, ifr_data_get_ptr(ifr), 546 sizeof(i2c)); 547 break; 548 } 549 #endif 550 case SIOCGPRIVATE_0: 551 error = priv_check(curthread, PRIV_DRIVER); 552 if (error != 0) 553 break; 554 error = copyin(ifr_data_get_ptr(ifr), &ioc, sizeof(ioc)); 555 if (error != 0) 556 return (error); 557 error = sfxge_private_ioctl(sc, &ioc); 558 if (error == 0) { 559 error = copyout(&ioc, ifr_data_get_ptr(ifr), 560 sizeof(ioc)); 561 } 562 break; 563 default: 564 error = ether_ioctl(ifp, command, data); 565 } 566 567 return (error); 568 } 569 570 static void 571 sfxge_ifnet_fini(struct ifnet *ifp) 572 { 573 struct sfxge_softc *sc = ifp->if_softc; 574 575 SFXGE_ADAPTER_LOCK(sc); 576 sfxge_stop(sc); 577 SFXGE_ADAPTER_UNLOCK(sc); 578 579 ifmedia_removeall(&sc->media); 580 ether_ifdetach(ifp); 581 if_free(ifp); 582 } 583 584 static int 585 sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc) 586 { 587 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp); 588 device_t dev; 589 int rc; 590 591 dev = sc->dev; 592 sc->ifnet = ifp; 593 594 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 595 ifp->if_init = sfxge_if_init; 596 ifp->if_softc = sc; 597 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 598 ifp->if_ioctl = sfxge_if_ioctl; 599 600 ifp->if_capabilities = SFXGE_CAP; 601 ifp->if_capenable = SFXGE_CAP_ENABLE; 602 ifp->if_hw_tsomax = SFXGE_TSO_MAX_SIZE; 603 ifp->if_hw_tsomaxsegcount = SFXGE_TX_MAPPING_MAX_SEG; 604 ifp->if_hw_tsomaxsegsize = PAGE_SIZE; 605 606 #ifdef SFXGE_LRO 607 ifp->if_capabilities |= IFCAP_LRO; 608 ifp->if_capenable |= IFCAP_LRO; 609 #endif 610 611 if (encp->enc_hw_tx_insert_vlan_enabled) { 612 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING; 613 ifp->if_capenable |= IFCAP_VLAN_HWTAGGING; 614 } 615 ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO | 616 CSUM_TCP_IPV6 | CSUM_UDP_IPV6; 617 618 ether_ifattach(ifp, encp->enc_mac_addr); 619 620 ifp->if_transmit = sfxge_if_transmit; 621 ifp->if_qflush = sfxge_if_qflush; 622 623 ifp->if_get_counter = sfxge_get_counter; 624 625 DBGPRINT(sc->dev, "ifmedia_init"); 626 if ((rc = sfxge_port_ifmedia_init(sc)) != 0) 627 goto fail; 628 629 return (0); 630 631 fail: 632 ether_ifdetach(sc->ifnet); 633 return (rc); 634 } 635 636 void 637 sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp) 638 { 639 KASSERT(sc->buffer_table_next + n <= 640 efx_nic_cfg_get(sc->enp)->enc_buftbl_limit, 641 ("buffer table full")); 642 643 *idp = sc->buffer_table_next; 644 sc->buffer_table_next += n; 645 } 646 647 static int 648 sfxge_bar_init(struct sfxge_softc *sc) 649 { 650 efsys_bar_t *esbp = &sc->bar; 651 652 esbp->esb_rid = PCIR_BAR(EFX_MEM_BAR); 653 if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY, 654 &esbp->esb_rid, RF_ACTIVE)) == NULL) { 655 device_printf(sc->dev, "Cannot allocate BAR region %d\n", 656 EFX_MEM_BAR); 657 return (ENXIO); 658 } 659 esbp->esb_tag = rman_get_bustag(esbp->esb_res); 660 esbp->esb_handle = rman_get_bushandle(esbp->esb_res); 661 662 SFXGE_BAR_LOCK_INIT(esbp, device_get_nameunit(sc->dev)); 663 664 return (0); 665 } 666 667 static void 668 sfxge_bar_fini(struct sfxge_softc *sc) 669 { 670 efsys_bar_t *esbp = &sc->bar; 671 672 bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid, 673 esbp->esb_res); 674 SFXGE_BAR_LOCK_DESTROY(esbp); 675 } 676 677 static int 678 sfxge_create(struct sfxge_softc *sc) 679 { 680 device_t dev; 681 efx_nic_t *enp; 682 int error; 683 char rss_param_name[sizeof(SFXGE_PARAM(%d.max_rss_channels))]; 684 #if EFSYS_OPT_MCDI_LOGGING 685 char mcdi_log_param_name[sizeof(SFXGE_PARAM(%d.mcdi_logging))]; 686 #endif 687 688 dev = sc->dev; 689 690 SFXGE_ADAPTER_LOCK_INIT(sc, device_get_nameunit(sc->dev)); 691 692 sc->max_rss_channels = 0; 693 snprintf(rss_param_name, sizeof(rss_param_name), 694 SFXGE_PARAM(%d.max_rss_channels), 695 (int)device_get_unit(dev)); 696 TUNABLE_INT_FETCH(rss_param_name, &sc->max_rss_channels); 697 #if EFSYS_OPT_MCDI_LOGGING 698 sc->mcdi_logging = sfxge_mcdi_logging; 699 snprintf(mcdi_log_param_name, sizeof(mcdi_log_param_name), 700 SFXGE_PARAM(%d.mcdi_logging), 701 (int)device_get_unit(dev)); 702 TUNABLE_INT_FETCH(mcdi_log_param_name, &sc->mcdi_logging); 703 #endif 704 705 sc->stats_node = SYSCTL_ADD_NODE( 706 device_get_sysctl_ctx(dev), 707 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 708 OID_AUTO, "stats", CTLFLAG_RD, NULL, "Statistics"); 709 if (sc->stats_node == NULL) { 710 error = ENOMEM; 711 goto fail; 712 } 713 714 TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc); 715 716 (void) pci_enable_busmaster(dev); 717 718 /* Initialize DMA mappings. */ 719 DBGPRINT(sc->dev, "dma_init..."); 720 if ((error = sfxge_dma_init(sc)) != 0) 721 goto fail; 722 723 /* Map the device registers. */ 724 DBGPRINT(sc->dev, "bar_init..."); 725 if ((error = sfxge_bar_init(sc)) != 0) 726 goto fail; 727 728 error = efx_family(pci_get_vendor(dev), pci_get_device(dev), 729 &sc->family); 730 KASSERT(error == 0, ("Family should be filtered by sfxge_probe()")); 731 732 DBGPRINT(sc->dev, "nic_create..."); 733 734 /* Create the common code nic object. */ 735 SFXGE_EFSYS_LOCK_INIT(&sc->enp_lock, 736 device_get_nameunit(sc->dev), "nic"); 737 if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc, 738 &sc->bar, &sc->enp_lock, &enp)) != 0) 739 goto fail3; 740 sc->enp = enp; 741 742 /* Initialize MCDI to talk to the microcontroller. */ 743 DBGPRINT(sc->dev, "mcdi_init..."); 744 if ((error = sfxge_mcdi_init(sc)) != 0) 745 goto fail4; 746 747 /* Probe the NIC and build the configuration data area. */ 748 DBGPRINT(sc->dev, "nic_probe..."); 749 if ((error = efx_nic_probe(enp)) != 0) 750 goto fail5; 751 752 if (!ISP2(sfxge_rx_ring_entries) || 753 (sfxge_rx_ring_entries < EFX_RXQ_MINNDESCS) || 754 (sfxge_rx_ring_entries > EFX_RXQ_MAXNDESCS)) { 755 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u", 756 SFXGE_PARAM_RX_RING, sfxge_rx_ring_entries, 757 EFX_RXQ_MINNDESCS, EFX_RXQ_MAXNDESCS); 758 error = EINVAL; 759 goto fail_rx_ring_entries; 760 } 761 sc->rxq_entries = sfxge_rx_ring_entries; 762 763 if (!ISP2(sfxge_tx_ring_entries) || 764 (sfxge_tx_ring_entries < EFX_TXQ_MINNDESCS) || 765 (sfxge_tx_ring_entries > EFX_TXQ_MAXNDESCS(efx_nic_cfg_get(enp)))) { 766 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u", 767 SFXGE_PARAM_TX_RING, sfxge_tx_ring_entries, 768 EFX_TXQ_MINNDESCS, EFX_TXQ_MAXNDESCS(efx_nic_cfg_get(enp))); 769 error = EINVAL; 770 goto fail_tx_ring_entries; 771 } 772 sc->txq_entries = sfxge_tx_ring_entries; 773 774 SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev), 775 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 776 OID_AUTO, "version", CTLFLAG_RD, 777 SFXGE_VERSION_STRING, 0, 778 "Driver version"); 779 780 SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev), 781 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 782 OID_AUTO, "phy_type", CTLFLAG_RD, 783 NULL, efx_nic_cfg_get(enp)->enc_phy_type, 784 "PHY type"); 785 786 /* Initialize the NVRAM. */ 787 DBGPRINT(sc->dev, "nvram_init..."); 788 if ((error = efx_nvram_init(enp)) != 0) 789 goto fail6; 790 791 /* Initialize the VPD. */ 792 DBGPRINT(sc->dev, "vpd_init..."); 793 if ((error = efx_vpd_init(enp)) != 0) 794 goto fail7; 795 796 efx_mcdi_new_epoch(enp); 797 798 /* Reset the NIC. */ 799 DBGPRINT(sc->dev, "nic_reset..."); 800 if ((error = efx_nic_reset(enp)) != 0) 801 goto fail8; 802 803 /* Initialize buffer table allocation. */ 804 sc->buffer_table_next = 0; 805 806 /* 807 * Guarantee minimum and estimate maximum number of event queues 808 * to take it into account when MSI-X interrupts are allocated. 809 * It initializes NIC and keeps it initialized on success. 810 */ 811 if ((error = sfxge_estimate_rsrc_limits(sc)) != 0) 812 goto fail8; 813 814 /* Set up interrupts. */ 815 DBGPRINT(sc->dev, "intr_init..."); 816 if ((error = sfxge_intr_init(sc)) != 0) 817 goto fail9; 818 819 /* Initialize event processing state. */ 820 DBGPRINT(sc->dev, "ev_init..."); 821 if ((error = sfxge_ev_init(sc)) != 0) 822 goto fail11; 823 824 /* Initialize port state. */ 825 DBGPRINT(sc->dev, "port_init..."); 826 if ((error = sfxge_port_init(sc)) != 0) 827 goto fail12; 828 829 /* Initialize receive state. */ 830 DBGPRINT(sc->dev, "rx_init..."); 831 if ((error = sfxge_rx_init(sc)) != 0) 832 goto fail13; 833 834 /* Initialize transmit state. */ 835 DBGPRINT(sc->dev, "tx_init..."); 836 if ((error = sfxge_tx_init(sc)) != 0) 837 goto fail14; 838 839 sc->init_state = SFXGE_INITIALIZED; 840 841 DBGPRINT(sc->dev, "success"); 842 return (0); 843 844 fail14: 845 sfxge_rx_fini(sc); 846 847 fail13: 848 sfxge_port_fini(sc); 849 850 fail12: 851 sfxge_ev_fini(sc); 852 853 fail11: 854 sfxge_intr_fini(sc); 855 856 fail9: 857 efx_nic_fini(sc->enp); 858 859 fail8: 860 efx_vpd_fini(enp); 861 862 fail7: 863 efx_nvram_fini(enp); 864 865 fail6: 866 fail_tx_ring_entries: 867 fail_rx_ring_entries: 868 efx_nic_unprobe(enp); 869 870 fail5: 871 sfxge_mcdi_fini(sc); 872 873 fail4: 874 sc->enp = NULL; 875 efx_nic_destroy(enp); 876 SFXGE_EFSYS_LOCK_DESTROY(&sc->enp_lock); 877 878 fail3: 879 sfxge_bar_fini(sc); 880 (void) pci_disable_busmaster(sc->dev); 881 882 fail: 883 DBGPRINT(sc->dev, "failed %d", error); 884 sc->dev = NULL; 885 SFXGE_ADAPTER_LOCK_DESTROY(sc); 886 return (error); 887 } 888 889 static void 890 sfxge_destroy(struct sfxge_softc *sc) 891 { 892 efx_nic_t *enp; 893 894 /* Clean up transmit state. */ 895 sfxge_tx_fini(sc); 896 897 /* Clean up receive state. */ 898 sfxge_rx_fini(sc); 899 900 /* Clean up port state. */ 901 sfxge_port_fini(sc); 902 903 /* Clean up event processing state. */ 904 sfxge_ev_fini(sc); 905 906 /* Clean up interrupts. */ 907 sfxge_intr_fini(sc); 908 909 /* Tear down common code subsystems. */ 910 efx_nic_reset(sc->enp); 911 efx_vpd_fini(sc->enp); 912 efx_nvram_fini(sc->enp); 913 efx_nic_unprobe(sc->enp); 914 915 /* Tear down MCDI. */ 916 sfxge_mcdi_fini(sc); 917 918 /* Destroy common code context. */ 919 enp = sc->enp; 920 sc->enp = NULL; 921 efx_nic_destroy(enp); 922 923 /* Free DMA memory. */ 924 sfxge_dma_fini(sc); 925 926 /* Free mapped BARs. */ 927 sfxge_bar_fini(sc); 928 929 (void) pci_disable_busmaster(sc->dev); 930 931 taskqueue_drain(taskqueue_thread, &sc->task_reset); 932 933 /* Destroy the softc lock. */ 934 SFXGE_ADAPTER_LOCK_DESTROY(sc); 935 } 936 937 static int 938 sfxge_vpd_handler(SYSCTL_HANDLER_ARGS) 939 { 940 struct sfxge_softc *sc = arg1; 941 efx_vpd_value_t value; 942 int rc; 943 944 value.evv_tag = arg2 >> 16; 945 value.evv_keyword = arg2 & 0xffff; 946 if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value)) 947 != 0) 948 return (rc); 949 950 return (SYSCTL_OUT(req, value.evv_value, value.evv_length)); 951 } 952 953 static void 954 sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list, 955 efx_vpd_tag_t tag, const char *keyword) 956 { 957 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev); 958 efx_vpd_value_t value; 959 960 /* Check whether VPD tag/keyword is present */ 961 value.evv_tag = tag; 962 value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]); 963 if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0) 964 return; 965 966 SYSCTL_ADD_PROC( 967 ctx, list, OID_AUTO, keyword, CTLTYPE_STRING|CTLFLAG_RD, 968 sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]), 969 sfxge_vpd_handler, "A", ""); 970 } 971 972 static int 973 sfxge_vpd_init(struct sfxge_softc *sc) 974 { 975 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev); 976 struct sysctl_oid *vpd_node; 977 struct sysctl_oid_list *vpd_list; 978 char keyword[3]; 979 efx_vpd_value_t value; 980 int rc; 981 982 if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0) { 983 /* 984 * Unpriviledged functions deny VPD access. 985 * Simply skip VPD in this case. 986 */ 987 if (rc == EACCES) 988 goto done; 989 goto fail; 990 } 991 sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK); 992 if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0) 993 goto fail2; 994 995 /* Copy ID (product name) into device description, and log it. */ 996 value.evv_tag = EFX_VPD_ID; 997 if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) { 998 value.evv_value[value.evv_length] = 0; 999 device_set_desc_copy(sc->dev, value.evv_value); 1000 device_printf(sc->dev, "%s\n", value.evv_value); 1001 } 1002 1003 vpd_node = SYSCTL_ADD_NODE( 1004 ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)), 1005 OID_AUTO, "vpd", CTLFLAG_RD, NULL, "Vital Product Data"); 1006 vpd_list = SYSCTL_CHILDREN(vpd_node); 1007 1008 /* Add sysctls for all expected and any vendor-defined keywords. */ 1009 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN"); 1010 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC"); 1011 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN"); 1012 keyword[0] = 'V'; 1013 keyword[2] = 0; 1014 for (keyword[1] = ''; keyword[1] <= '9'; keyword[1]++) 1015 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword); 1016 for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++) 1017 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword); 1018 1019 done: 1020 return (0); 1021 1022 fail2: 1023 free(sc->vpd_data, M_SFXGE); 1024 fail: 1025 return (rc); 1026 } 1027 1028 static void 1029 sfxge_vpd_fini(struct sfxge_softc *sc) 1030 { 1031 free(sc->vpd_data, M_SFXGE); 1032 } 1033 1034 static void 1035 sfxge_reset(void *arg, int npending) 1036 { 1037 struct sfxge_softc *sc; 1038 int rc; 1039 unsigned attempt; 1040 1041 (void)npending; 1042 1043 sc = (struct sfxge_softc *)arg; 1044 1045 SFXGE_ADAPTER_LOCK(sc); 1046 1047 if (sc->init_state != SFXGE_STARTED) 1048 goto done; 1049 1050 sfxge_stop(sc); 1051 efx_nic_reset(sc->enp); 1052 for (attempt = 0; attempt < sfxge_restart_attempts; ++attempt) { 1053 if ((rc = sfxge_start(sc)) == 0) 1054 goto done; 1055 1056 device_printf(sc->dev, "start on reset failed (%d)\n", rc); 1057 DELAY(100000); 1058 } 1059 1060 device_printf(sc->dev, "reset failed; interface is now stopped\n"); 1061 1062 done: 1063 SFXGE_ADAPTER_UNLOCK(sc); 1064 } 1065 1066 void 1067 sfxge_schedule_reset(struct sfxge_softc *sc) 1068 { 1069 taskqueue_enqueue(taskqueue_thread, &sc->task_reset); 1070 } 1071 1072 static int 1073 sfxge_attach(device_t dev) 1074 { 1075 struct sfxge_softc *sc; 1076 struct ifnet *ifp; 1077 int error; 1078 1079 sc = device_get_softc(dev); 1080 sc->dev = dev; 1081 1082 /* Allocate ifnet. */ 1083 ifp = if_alloc(IFT_ETHER); 1084 if (ifp == NULL) { 1085 device_printf(dev, "Couldn't allocate ifnet\n"); 1086 error = ENOMEM; 1087 goto fail; 1088 } 1089 sc->ifnet = ifp; 1090 1091 /* Initialize hardware. */ 1092 DBGPRINT(sc->dev, "create nic"); 1093 if ((error = sfxge_create(sc)) != 0) 1094 goto fail2; 1095 1096 /* Create the ifnet for the port. */ 1097 DBGPRINT(sc->dev, "init ifnet"); 1098 if ((error = sfxge_ifnet_init(ifp, sc)) != 0) 1099 goto fail3; 1100 1101 DBGPRINT(sc->dev, "init vpd"); 1102 if ((error = sfxge_vpd_init(sc)) != 0) 1103 goto fail4; 1104 1105 /* 1106 * NIC is initialized inside sfxge_create() and kept inialized 1107 * to be able to initialize port to discover media types in 1108 * sfxge_ifnet_init(). 1109 */ 1110 efx_nic_fini(sc->enp); 1111 1112 sc->init_state = SFXGE_REGISTERED; 1113 1114 DBGPRINT(sc->dev, "success"); 1115 return (0); 1116 1117 fail4: 1118 sfxge_ifnet_fini(ifp); 1119 fail3: 1120 efx_nic_fini(sc->enp); 1121 sfxge_destroy(sc); 1122 1123 fail2: 1124 if_free(sc->ifnet); 1125 1126 fail: 1127 DBGPRINT(sc->dev, "failed %d", error); 1128 return (error); 1129 } 1130 1131 static int 1132 sfxge_detach(device_t dev) 1133 { 1134 struct sfxge_softc *sc; 1135 1136 sc = device_get_softc(dev); 1137 1138 sfxge_vpd_fini(sc); 1139 1140 /* Destroy the ifnet. */ 1141 sfxge_ifnet_fini(sc->ifnet); 1142 1143 /* Tear down hardware. */ 1144 sfxge_destroy(sc); 1145 1146 return (0); 1147 } 1148 1149 static int 1150 sfxge_probe(device_t dev) 1151 { 1152 uint16_t pci_vendor_id; 1153 uint16_t pci_device_id; 1154 efx_family_t family; 1155 int rc; 1156 1157 pci_vendor_id = pci_get_vendor(dev); 1158 pci_device_id = pci_get_device(dev); 1159 1160 DBGPRINT(dev, "PCI ID %04x:%04x", pci_vendor_id, pci_device_id); 1161 rc = efx_family(pci_vendor_id, pci_device_id, &family); 1162 if (rc != 0) { 1163 DBGPRINT(dev, "efx_family fail %d", rc); 1164 return (ENXIO); 1165 } 1166 1167 if (family == EFX_FAMILY_SIENA) { 1168 device_set_desc(dev, "Solarflare SFC9000 family"); 1169 return (0); 1170 } 1171 1172 if (family == EFX_FAMILY_HUNTINGTON) { 1173 device_set_desc(dev, "Solarflare SFC9100 family"); 1174 return (0); 1175 } 1176 1177 if (family == EFX_FAMILY_MEDFORD) { 1178 device_set_desc(dev, "Solarflare SFC9200 family"); 1179 return (0); 1180 } 1181 1182 DBGPRINT(dev, "impossible controller family %d", family); 1183 return (ENXIO); 1184 } 1185 1186 static device_method_t sfxge_methods[] = { 1187 DEVMETHOD(device_probe, sfxge_probe), 1188 DEVMETHOD(device_attach, sfxge_attach), 1189 DEVMETHOD(device_detach, sfxge_detach), 1190 1191 DEVMETHOD_END 1192 }; 1193 1194 static devclass_t sfxge_devclass; 1195 1196 static driver_t sfxge_driver = { 1197 "sfxge", 1198 sfxge_methods, 1199 sizeof(struct sfxge_softc) 1200 }; 1201 1202 DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0);
Cache object: 8c0e6a54a3910022c11cafbf1fe9e884
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