sfxge.c revision 302408
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: stable/11/sys/dev/sfxge/sfxge.c 301491 2016-06-06 09:05:52Z arybchik $"); 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 84MALLOC_DEFINE(M_SFXGE, "sfxge", "Solarflare 10GigE driver"); 85 86 87SYSCTL_NODE(_hw, OID_AUTO, sfxge, CTLFLAG_RD, 0, 88 "SFXGE driver parameters"); 89 90#define SFXGE_PARAM_RX_RING SFXGE_PARAM(rx_ring) 91static int sfxge_rx_ring_entries = SFXGE_NDESCS; 92TUNABLE_INT(SFXGE_PARAM_RX_RING, &sfxge_rx_ring_entries); 93SYSCTL_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) 98static int sfxge_tx_ring_entries = SFXGE_NDESCS; 99TUNABLE_INT(SFXGE_PARAM_TX_RING, &sfxge_tx_ring_entries); 100SYSCTL_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) 105static int sfxge_restart_attempts = 3; 106TUNABLE_INT(SFXGE_PARAM_RESTART_ATTEMPTS, &sfxge_restart_attempts); 107SYSCTL_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) 113static int sfxge_mcdi_logging = 0; 114TUNABLE_INT(SFXGE_PARAM_MCDI_LOGGING, &sfxge_mcdi_logging); 115#endif 116 117static void 118sfxge_reset(void *arg, int npending); 119 120static int 121sfxge_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 195static int 196sfxge_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 213static int 214sfxge_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 263fail6: 264 sfxge_rx_stop(sc); 265 266fail5: 267 sfxge_port_stop(sc); 268 269fail4: 270 sfxge_ev_stop(sc); 271 272fail3: 273 sfxge_intr_stop(sc); 274 275fail2: 276 efx_nic_fini(sc->enp); 277 278fail: 279 device_printf(sc->dev, "sfxge_start: %d\n", rc); 280 281 return (rc); 282} 283 284static void 285sfxge_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 296static void 297sfxge_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 327static int 328sfxge_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 371static int 372sfxge_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 387static int 388sfxge_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->ifr_data, &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->ifr_data, sizeof(i2c)); 546 break; 547 } 548#endif 549 case SIOCGPRIVATE_0: 550 error = priv_check(curthread, PRIV_DRIVER); 551 if (error != 0) 552 break; 553 error = copyin(ifr->ifr_data, &ioc, sizeof(ioc)); 554 if (error != 0) 555 return (error); 556 error = sfxge_private_ioctl(sc, &ioc); 557 if (error == 0) { 558 error = copyout(&ioc, ifr->ifr_data, sizeof(ioc)); 559 } 560 break; 561 default: 562 error = ether_ioctl(ifp, command, data); 563 } 564 565 return (error); 566} 567 568static void 569sfxge_ifnet_fini(struct ifnet *ifp) 570{ 571 struct sfxge_softc *sc = ifp->if_softc; 572 573 SFXGE_ADAPTER_LOCK(sc); 574 sfxge_stop(sc); 575 SFXGE_ADAPTER_UNLOCK(sc); 576 577 ifmedia_removeall(&sc->media); 578 ether_ifdetach(ifp); 579 if_free(ifp); 580} 581 582static int 583sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc) 584{ 585 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp); 586 device_t dev; 587 int rc; 588 589 dev = sc->dev; 590 sc->ifnet = ifp; 591 592 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 593 ifp->if_init = sfxge_if_init; 594 ifp->if_softc = sc; 595 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 596 ifp->if_ioctl = sfxge_if_ioctl; 597 598 ifp->if_capabilities = SFXGE_CAP; 599 ifp->if_capenable = SFXGE_CAP_ENABLE; 600 ifp->if_hw_tsomax = SFXGE_TSO_MAX_SIZE; 601 ifp->if_hw_tsomaxsegcount = SFXGE_TX_MAPPING_MAX_SEG; 602 ifp->if_hw_tsomaxsegsize = PAGE_SIZE; 603 604#ifdef SFXGE_LRO 605 ifp->if_capabilities |= IFCAP_LRO; 606 ifp->if_capenable |= IFCAP_LRO; 607#endif 608 609 if (encp->enc_hw_tx_insert_vlan_enabled) { 610 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING; 611 ifp->if_capenable |= IFCAP_VLAN_HWTAGGING; 612 } 613 ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO | 614 CSUM_TCP_IPV6 | CSUM_UDP_IPV6; 615 616 ether_ifattach(ifp, encp->enc_mac_addr); 617 618 ifp->if_transmit = sfxge_if_transmit; 619 ifp->if_qflush = sfxge_if_qflush; 620 621 ifp->if_get_counter = sfxge_get_counter; 622 623 DBGPRINT(sc->dev, "ifmedia_init"); 624 if ((rc = sfxge_port_ifmedia_init(sc)) != 0) 625 goto fail; 626 627 return (0); 628 629fail: 630 ether_ifdetach(sc->ifnet); 631 return (rc); 632} 633 634void 635sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp) 636{ 637 KASSERT(sc->buffer_table_next + n <= 638 efx_nic_cfg_get(sc->enp)->enc_buftbl_limit, 639 ("buffer table full")); 640 641 *idp = sc->buffer_table_next; 642 sc->buffer_table_next += n; 643} 644 645static int 646sfxge_bar_init(struct sfxge_softc *sc) 647{ 648 efsys_bar_t *esbp = &sc->bar; 649 650 esbp->esb_rid = PCIR_BAR(EFX_MEM_BAR); 651 if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY, 652 &esbp->esb_rid, RF_ACTIVE)) == NULL) { 653 device_printf(sc->dev, "Cannot allocate BAR region %d\n", 654 EFX_MEM_BAR); 655 return (ENXIO); 656 } 657 esbp->esb_tag = rman_get_bustag(esbp->esb_res); 658 esbp->esb_handle = rman_get_bushandle(esbp->esb_res); 659 660 SFXGE_BAR_LOCK_INIT(esbp, device_get_nameunit(sc->dev)); 661 662 return (0); 663} 664 665static void 666sfxge_bar_fini(struct sfxge_softc *sc) 667{ 668 efsys_bar_t *esbp = &sc->bar; 669 670 bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid, 671 esbp->esb_res); 672 SFXGE_BAR_LOCK_DESTROY(esbp); 673} 674 675static int 676sfxge_create(struct sfxge_softc *sc) 677{ 678 device_t dev; 679 efx_nic_t *enp; 680 int error; 681 char rss_param_name[sizeof(SFXGE_PARAM(%d.max_rss_channels))]; 682#if EFSYS_OPT_MCDI_LOGGING 683 char mcdi_log_param_name[sizeof(SFXGE_PARAM(%d.mcdi_logging))]; 684#endif 685 686 dev = sc->dev; 687 688 SFXGE_ADAPTER_LOCK_INIT(sc, device_get_nameunit(sc->dev)); 689 690 sc->max_rss_channels = 0; 691 snprintf(rss_param_name, sizeof(rss_param_name), 692 SFXGE_PARAM(%d.max_rss_channels), 693 (int)device_get_unit(dev)); 694 TUNABLE_INT_FETCH(rss_param_name, &sc->max_rss_channels); 695#if EFSYS_OPT_MCDI_LOGGING 696 sc->mcdi_logging = sfxge_mcdi_logging; 697 snprintf(mcdi_log_param_name, sizeof(mcdi_log_param_name), 698 SFXGE_PARAM(%d.mcdi_logging), 699 (int)device_get_unit(dev)); 700 TUNABLE_INT_FETCH(mcdi_log_param_name, &sc->mcdi_logging); 701#endif 702 703 sc->stats_node = SYSCTL_ADD_NODE( 704 device_get_sysctl_ctx(dev), 705 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 706 OID_AUTO, "stats", CTLFLAG_RD, NULL, "Statistics"); 707 if (sc->stats_node == NULL) { 708 error = ENOMEM; 709 goto fail; 710 } 711 712 TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc); 713 714 (void) pci_enable_busmaster(dev); 715 716 /* Initialize DMA mappings. */ 717 DBGPRINT(sc->dev, "dma_init..."); 718 if ((error = sfxge_dma_init(sc)) != 0) 719 goto fail; 720 721 /* Map the device registers. */ 722 DBGPRINT(sc->dev, "bar_init..."); 723 if ((error = sfxge_bar_init(sc)) != 0) 724 goto fail; 725 726 error = efx_family(pci_get_vendor(dev), pci_get_device(dev), 727 &sc->family); 728 KASSERT(error == 0, ("Family should be filtered by sfxge_probe()")); 729 730 DBGPRINT(sc->dev, "nic_create..."); 731 732 /* Create the common code nic object. */ 733 SFXGE_EFSYS_LOCK_INIT(&sc->enp_lock, 734 device_get_nameunit(sc->dev), "nic"); 735 if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc, 736 &sc->bar, &sc->enp_lock, &enp)) != 0) 737 goto fail3; 738 sc->enp = enp; 739 740 if (!ISP2(sfxge_rx_ring_entries) || 741 (sfxge_rx_ring_entries < EFX_RXQ_MINNDESCS) || 742 (sfxge_rx_ring_entries > EFX_RXQ_MAXNDESCS)) { 743 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u", 744 SFXGE_PARAM_RX_RING, sfxge_rx_ring_entries, 745 EFX_RXQ_MINNDESCS, EFX_RXQ_MAXNDESCS); 746 error = EINVAL; 747 goto fail_rx_ring_entries; 748 } 749 sc->rxq_entries = sfxge_rx_ring_entries; 750 751 if (!ISP2(sfxge_tx_ring_entries) || 752 (sfxge_tx_ring_entries < EFX_TXQ_MINNDESCS) || 753 (sfxge_tx_ring_entries > EFX_TXQ_MAXNDESCS(efx_nic_cfg_get(enp)))) { 754 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u", 755 SFXGE_PARAM_TX_RING, sfxge_tx_ring_entries, 756 EFX_TXQ_MINNDESCS, EFX_TXQ_MAXNDESCS(efx_nic_cfg_get(enp))); 757 error = EINVAL; 758 goto fail_tx_ring_entries; 759 } 760 sc->txq_entries = sfxge_tx_ring_entries; 761 762 /* Initialize MCDI to talk to the microcontroller. */ 763 DBGPRINT(sc->dev, "mcdi_init..."); 764 if ((error = sfxge_mcdi_init(sc)) != 0) 765 goto fail4; 766 767 /* Probe the NIC and build the configuration data area. */ 768 DBGPRINT(sc->dev, "nic_probe..."); 769 if ((error = efx_nic_probe(enp)) != 0) 770 goto fail5; 771 772 SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev), 773 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 774 OID_AUTO, "version", CTLFLAG_RD, 775 SFXGE_VERSION_STRING, 0, 776 "Driver version"); 777 778 SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev), 779 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 780 OID_AUTO, "phy_type", CTLFLAG_RD, 781 NULL, efx_nic_cfg_get(enp)->enc_phy_type, 782 "PHY type"); 783 784 /* Initialize the NVRAM. */ 785 DBGPRINT(sc->dev, "nvram_init..."); 786 if ((error = efx_nvram_init(enp)) != 0) 787 goto fail6; 788 789 /* Initialize the VPD. */ 790 DBGPRINT(sc->dev, "vpd_init..."); 791 if ((error = efx_vpd_init(enp)) != 0) 792 goto fail7; 793 794 efx_mcdi_new_epoch(enp); 795 796 /* Reset the NIC. */ 797 DBGPRINT(sc->dev, "nic_reset..."); 798 if ((error = efx_nic_reset(enp)) != 0) 799 goto fail8; 800 801 /* Initialize buffer table allocation. */ 802 sc->buffer_table_next = 0; 803 804 /* 805 * Guarantee minimum and estimate maximum number of event queues 806 * to take it into account when MSI-X interrupts are allocated. 807 * It initializes NIC and keeps it initialized on success. 808 */ 809 if ((error = sfxge_estimate_rsrc_limits(sc)) != 0) 810 goto fail8; 811 812 /* Set up interrupts. */ 813 DBGPRINT(sc->dev, "intr_init..."); 814 if ((error = sfxge_intr_init(sc)) != 0) 815 goto fail9; 816 817 /* Initialize event processing state. */ 818 DBGPRINT(sc->dev, "ev_init..."); 819 if ((error = sfxge_ev_init(sc)) != 0) 820 goto fail11; 821 822 /* Initialize port state. */ 823 DBGPRINT(sc->dev, "port_init..."); 824 if ((error = sfxge_port_init(sc)) != 0) 825 goto fail12; 826 827 /* Initialize receive state. */ 828 DBGPRINT(sc->dev, "rx_init..."); 829 if ((error = sfxge_rx_init(sc)) != 0) 830 goto fail13; 831 832 /* Initialize transmit state. */ 833 DBGPRINT(sc->dev, "tx_init..."); 834 if ((error = sfxge_tx_init(sc)) != 0) 835 goto fail14; 836 837 sc->init_state = SFXGE_INITIALIZED; 838 839 DBGPRINT(sc->dev, "success"); 840 return (0); 841 842fail14: 843 sfxge_rx_fini(sc); 844 845fail13: 846 sfxge_port_fini(sc); 847 848fail12: 849 sfxge_ev_fini(sc); 850 851fail11: 852 sfxge_intr_fini(sc); 853 854fail9: 855 efx_nic_fini(sc->enp); 856 857fail8: 858 efx_vpd_fini(enp); 859 860fail7: 861 efx_nvram_fini(enp); 862 863fail6: 864 efx_nic_unprobe(enp); 865 866fail5: 867 sfxge_mcdi_fini(sc); 868 869fail4: 870fail_tx_ring_entries: 871fail_rx_ring_entries: 872 sc->enp = NULL; 873 efx_nic_destroy(enp); 874 SFXGE_EFSYS_LOCK_DESTROY(&sc->enp_lock); 875 876fail3: 877 sfxge_bar_fini(sc); 878 (void) pci_disable_busmaster(sc->dev); 879 880fail: 881 DBGPRINT(sc->dev, "failed %d", error); 882 sc->dev = NULL; 883 SFXGE_ADAPTER_LOCK_DESTROY(sc); 884 return (error); 885} 886 887static void 888sfxge_destroy(struct sfxge_softc *sc) 889{ 890 efx_nic_t *enp; 891 892 /* Clean up transmit state. */ 893 sfxge_tx_fini(sc); 894 895 /* Clean up receive state. */ 896 sfxge_rx_fini(sc); 897 898 /* Clean up port state. */ 899 sfxge_port_fini(sc); 900 901 /* Clean up event processing state. */ 902 sfxge_ev_fini(sc); 903 904 /* Clean up interrupts. */ 905 sfxge_intr_fini(sc); 906 907 /* Tear down common code subsystems. */ 908 efx_nic_reset(sc->enp); 909 efx_vpd_fini(sc->enp); 910 efx_nvram_fini(sc->enp); 911 efx_nic_unprobe(sc->enp); 912 913 /* Tear down MCDI. */ 914 sfxge_mcdi_fini(sc); 915 916 /* Destroy common code context. */ 917 enp = sc->enp; 918 sc->enp = NULL; 919 efx_nic_destroy(enp); 920 921 /* Free DMA memory. */ 922 sfxge_dma_fini(sc); 923 924 /* Free mapped BARs. */ 925 sfxge_bar_fini(sc); 926 927 (void) pci_disable_busmaster(sc->dev); 928 929 taskqueue_drain(taskqueue_thread, &sc->task_reset); 930 931 /* Destroy the softc lock. */ 932 SFXGE_ADAPTER_LOCK_DESTROY(sc); 933} 934 935static int 936sfxge_vpd_handler(SYSCTL_HANDLER_ARGS) 937{ 938 struct sfxge_softc *sc = arg1; 939 efx_vpd_value_t value; 940 int rc; 941 942 value.evv_tag = arg2 >> 16; 943 value.evv_keyword = arg2 & 0xffff; 944 if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value)) 945 != 0) 946 return (rc); 947 948 return (SYSCTL_OUT(req, value.evv_value, value.evv_length)); 949} 950 951static void 952sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list, 953 efx_vpd_tag_t tag, const char *keyword) 954{ 955 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev); 956 efx_vpd_value_t value; 957 958 /* Check whether VPD tag/keyword is present */ 959 value.evv_tag = tag; 960 value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]); 961 if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0) 962 return; 963 964 SYSCTL_ADD_PROC( 965 ctx, list, OID_AUTO, keyword, CTLTYPE_STRING|CTLFLAG_RD, 966 sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]), 967 sfxge_vpd_handler, "A", ""); 968} 969 970static int 971sfxge_vpd_init(struct sfxge_softc *sc) 972{ 973 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev); 974 struct sysctl_oid *vpd_node; 975 struct sysctl_oid_list *vpd_list; 976 char keyword[3]; 977 efx_vpd_value_t value; 978 int rc; 979 980 if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0) { 981 /* 982 * Unpriviledged functions deny VPD access. 983 * Simply skip VPD in this case. 984 */ 985 if (rc == EACCES) 986 goto done; 987 goto fail; 988 } 989 sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK); 990 if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0) 991 goto fail2; 992 993 /* Copy ID (product name) into device description, and log it. */ 994 value.evv_tag = EFX_VPD_ID; 995 if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) { 996 value.evv_value[value.evv_length] = 0; 997 device_set_desc_copy(sc->dev, value.evv_value); 998 device_printf(sc->dev, "%s\n", value.evv_value); 999 } 1000 1001 vpd_node = SYSCTL_ADD_NODE( 1002 ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)), 1003 OID_AUTO, "vpd", CTLFLAG_RD, NULL, "Vital Product Data"); 1004 vpd_list = SYSCTL_CHILDREN(vpd_node); 1005 1006 /* Add sysctls for all expected and any vendor-defined keywords. */ 1007 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN"); 1008 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC"); 1009 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN"); 1010 keyword[0] = 'V'; 1011 keyword[2] = 0; 1012 for (keyword[1] = '0'; keyword[1] <= '9'; keyword[1]++) 1013 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword); 1014 for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++) 1015 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword); 1016 1017done: 1018 return (0); 1019 1020fail2: 1021 free(sc->vpd_data, M_SFXGE); 1022fail: 1023 return (rc); 1024} 1025 1026static void 1027sfxge_vpd_fini(struct sfxge_softc *sc) 1028{ 1029 free(sc->vpd_data, M_SFXGE); 1030} 1031 1032static void 1033sfxge_reset(void *arg, int npending) 1034{ 1035 struct sfxge_softc *sc; 1036 int rc; 1037 unsigned attempt; 1038 1039 (void)npending; 1040 1041 sc = (struct sfxge_softc *)arg; 1042 1043 SFXGE_ADAPTER_LOCK(sc); 1044 1045 if (sc->init_state != SFXGE_STARTED) 1046 goto done; 1047 1048 sfxge_stop(sc); 1049 efx_nic_reset(sc->enp); 1050 for (attempt = 0; attempt < sfxge_restart_attempts; ++attempt) { 1051 if ((rc = sfxge_start(sc)) == 0) 1052 goto done; 1053 1054 device_printf(sc->dev, "start on reset failed (%d)\n", rc); 1055 DELAY(100000); 1056 } 1057 1058 device_printf(sc->dev, "reset failed; interface is now stopped\n"); 1059 1060done: 1061 SFXGE_ADAPTER_UNLOCK(sc); 1062} 1063 1064void 1065sfxge_schedule_reset(struct sfxge_softc *sc) 1066{ 1067 taskqueue_enqueue(taskqueue_thread, &sc->task_reset); 1068} 1069 1070static int 1071sfxge_attach(device_t dev) 1072{ 1073 struct sfxge_softc *sc; 1074 struct ifnet *ifp; 1075 int error; 1076 1077 sc = device_get_softc(dev); 1078 sc->dev = dev; 1079 1080 /* Allocate ifnet. */ 1081 ifp = if_alloc(IFT_ETHER); 1082 if (ifp == NULL) { 1083 device_printf(dev, "Couldn't allocate ifnet\n"); 1084 error = ENOMEM; 1085 goto fail; 1086 } 1087 sc->ifnet = ifp; 1088 1089 /* Initialize hardware. */ 1090 DBGPRINT(sc->dev, "create nic"); 1091 if ((error = sfxge_create(sc)) != 0) 1092 goto fail2; 1093 1094 /* Create the ifnet for the port. */ 1095 DBGPRINT(sc->dev, "init ifnet"); 1096 if ((error = sfxge_ifnet_init(ifp, sc)) != 0) 1097 goto fail3; 1098 1099 DBGPRINT(sc->dev, "init vpd"); 1100 if ((error = sfxge_vpd_init(sc)) != 0) 1101 goto fail4; 1102 1103 /* 1104 * NIC is initialized inside sfxge_create() and kept inialized 1105 * to be able to initialize port to discover media types in 1106 * sfxge_ifnet_init(). 1107 */ 1108 efx_nic_fini(sc->enp); 1109 1110 sc->init_state = SFXGE_REGISTERED; 1111 1112 DBGPRINT(sc->dev, "success"); 1113 return (0); 1114 1115fail4: 1116 sfxge_ifnet_fini(ifp); 1117fail3: 1118 efx_nic_fini(sc->enp); 1119 sfxge_destroy(sc); 1120 1121fail2: 1122 if_free(sc->ifnet); 1123 1124fail: 1125 DBGPRINT(sc->dev, "failed %d", error); 1126 return (error); 1127} 1128 1129static int 1130sfxge_detach(device_t dev) 1131{ 1132 struct sfxge_softc *sc; 1133 1134 sc = device_get_softc(dev); 1135 1136 sfxge_vpd_fini(sc); 1137 1138 /* Destroy the ifnet. */ 1139 sfxge_ifnet_fini(sc->ifnet); 1140 1141 /* Tear down hardware. */ 1142 sfxge_destroy(sc); 1143 1144 return (0); 1145} 1146 1147static int 1148sfxge_probe(device_t dev) 1149{ 1150 uint16_t pci_vendor_id; 1151 uint16_t pci_device_id; 1152 efx_family_t family; 1153 int rc; 1154 1155 pci_vendor_id = pci_get_vendor(dev); 1156 pci_device_id = pci_get_device(dev); 1157 1158 DBGPRINT(dev, "PCI ID %04x:%04x", pci_vendor_id, pci_device_id); 1159 rc = efx_family(pci_vendor_id, pci_device_id, &family); 1160 if (rc != 0) { 1161 DBGPRINT(dev, "efx_family fail %d", rc); 1162 return (ENXIO); 1163 } 1164 1165 if (family == EFX_FAMILY_SIENA) { 1166 device_set_desc(dev, "Solarflare SFC9000 family"); 1167 return (0); 1168 } 1169 1170 if (family == EFX_FAMILY_HUNTINGTON) { 1171 device_set_desc(dev, "Solarflare SFC9100 family"); 1172 return (0); 1173 } 1174 1175 if (family == EFX_FAMILY_MEDFORD) { 1176 device_set_desc(dev, "Solarflare SFC9200 family"); 1177 return (0); 1178 } 1179 1180 DBGPRINT(dev, "impossible controller family %d", family); 1181 return (ENXIO); 1182} 1183 1184static device_method_t sfxge_methods[] = { 1185 DEVMETHOD(device_probe, sfxge_probe), 1186 DEVMETHOD(device_attach, sfxge_attach), 1187 DEVMETHOD(device_detach, sfxge_detach), 1188 1189 DEVMETHOD_END 1190}; 1191 1192static devclass_t sfxge_devclass; 1193 1194static driver_t sfxge_driver = { 1195 "sfxge", 1196 sfxge_methods, 1197 sizeof(struct sfxge_softc) 1198}; 1199 1200DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0); 1201