1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2010-2016 Solarflare Communications Inc. 5 * All rights reserved. 6 * 7 * This software was developed in part by Philip Paeps under contract for 8 * Solarflare Communications, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright notice, 14 * this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 29 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * The views and conclusions contained in the software and documentation are 32 * those of the authors and should not be interpreted as representing official 33 * policies, either expressed or implied, of the FreeBSD Project. 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 #include "opt_rss.h" 40 41 #include <sys/param.h> 42 #include <sys/kernel.h> 43 #include <sys/bus.h> 44 #include <sys/rman.h> 45 #include <sys/lock.h> 46 #include <sys/module.h> 47 #include <sys/mutex.h> 48 #include <sys/smp.h> 49 #include <sys/socket.h> 50 #include <sys/taskqueue.h> 51 #include <sys/sockio.h> 52 #include <sys/sysctl.h> 53 #include <sys/priv.h> 54 #include <sys/syslog.h> 55 56 #include <dev/pci/pcireg.h> 57 #include <dev/pci/pcivar.h> 58 59 #include <net/ethernet.h> 60 #include <net/if.h> 61 #include <net/if_var.h> 62 #include <net/if_media.h> 63 #include <net/if_types.h> 64 65 #ifdef RSS 66 #include <net/rss_config.h> 67 #endif 68 69 #include "common/efx.h" 70 71 #include "sfxge.h" 72 #include "sfxge_rx.h" 73 #include "sfxge_ioc.h" 74 #include "sfxge_version.h" 75 76 #define SFXGE_CAP (IFCAP_VLAN_MTU | IFCAP_VLAN_HWCSUM | \ 77 IFCAP_RXCSUM | IFCAP_TXCSUM | \ 78 IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6 | \ 79 IFCAP_TSO4 | IFCAP_TSO6 | \ 80 IFCAP_JUMBO_MTU | \ 81 IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE | IFCAP_HWSTATS) 82 #define SFXGE_CAP_ENABLE SFXGE_CAP 83 #define SFXGE_CAP_FIXED (IFCAP_VLAN_MTU | \ 84 IFCAP_JUMBO_MTU | IFCAP_LINKSTATE | IFCAP_HWSTATS) 85 86 MALLOC_DEFINE(M_SFXGE, "sfxge", "Solarflare 10GigE driver"); 87 88 89 SYSCTL_NODE(_hw, OID_AUTO, sfxge, CTLFLAG_RD, 0, 90 "SFXGE driver parameters"); 91 92 #define SFXGE_PARAM_RX_RING SFXGE_PARAM(rx_ring) 93 static int sfxge_rx_ring_entries = SFXGE_NDESCS; 94 TUNABLE_INT(SFXGE_PARAM_RX_RING, &sfxge_rx_ring_entries); 95 SYSCTL_INT(_hw_sfxge, OID_AUTO, rx_ring, CTLFLAG_RDTUN, 96 &sfxge_rx_ring_entries, 0, 97 "Maximum number of descriptors in a receive ring"); 98 99 #define SFXGE_PARAM_TX_RING SFXGE_PARAM(tx_ring) 100 static int sfxge_tx_ring_entries = SFXGE_NDESCS; 101 TUNABLE_INT(SFXGE_PARAM_TX_RING, &sfxge_tx_ring_entries); 102 SYSCTL_INT(_hw_sfxge, OID_AUTO, tx_ring, CTLFLAG_RDTUN, 103 &sfxge_tx_ring_entries, 0, 104 "Maximum number of descriptors in a transmit ring"); 105 106 #define SFXGE_PARAM_RESTART_ATTEMPTS SFXGE_PARAM(restart_attempts) 107 static int sfxge_restart_attempts = 3; 108 TUNABLE_INT(SFXGE_PARAM_RESTART_ATTEMPTS, &sfxge_restart_attempts); 109 SYSCTL_INT(_hw_sfxge, OID_AUTO, restart_attempts, CTLFLAG_RDTUN, 110 &sfxge_restart_attempts, 0, 111 "Maximum number of attempts to bring interface up after reset"); 112 113 #if EFSYS_OPT_MCDI_LOGGING 114 #define SFXGE_PARAM_MCDI_LOGGING SFXGE_PARAM(mcdi_logging) 115 static int sfxge_mcdi_logging = 0; 116 TUNABLE_INT(SFXGE_PARAM_MCDI_LOGGING, &sfxge_mcdi_logging); 117 #endif 118 119 static void 120 sfxge_reset(void *arg, int npending); 121 122 static int 123 sfxge_estimate_rsrc_limits(struct sfxge_softc *sc) 124 { 125 efx_drv_limits_t limits; 126 int rc; 127 unsigned int evq_max; 128 uint32_t evq_allocated; 129 uint32_t rxq_allocated; 130 uint32_t txq_allocated; 131 132 /* 133 * Limit the number of event queues to: 134 * - number of CPUs 135 * - hardwire maximum RSS channels 136 * - administratively specified maximum RSS channels 137 */ 138 #ifdef RSS 139 /* 140 * Avoid extra limitations so that the number of queues 141 * may be configured at administrator's will 142 */ 143 evq_max = MIN(MAX(rss_getnumbuckets(), 1), EFX_MAXRSS); 144 #else 145 evq_max = MIN(mp_ncpus, EFX_MAXRSS); 146 #endif 147 if (sc->max_rss_channels > 0) 148 evq_max = MIN(evq_max, sc->max_rss_channels); 149 150 memset(&limits, 0, sizeof(limits)); 151 152 limits.edl_min_evq_count = 1; 153 limits.edl_max_evq_count = evq_max; 154 limits.edl_min_txq_count = SFXGE_TXQ_NTYPES; 155 limits.edl_max_txq_count = evq_max + SFXGE_TXQ_NTYPES - 1; 156 limits.edl_min_rxq_count = 1; 157 limits.edl_max_rxq_count = evq_max; 158 159 efx_nic_set_drv_limits(sc->enp, &limits); 160 161 if ((rc = efx_nic_init(sc->enp)) != 0) 162 return (rc); 163 164 rc = efx_nic_get_vi_pool(sc->enp, &evq_allocated, &rxq_allocated, 165 &txq_allocated); 166 if (rc != 0) { 167 efx_nic_fini(sc->enp); 168 return (rc); 169 } 170 171 KASSERT(txq_allocated >= SFXGE_TXQ_NTYPES, 172 ("txq_allocated < SFXGE_TXQ_NTYPES")); 173 174 sc->evq_max = MIN(evq_allocated, evq_max); 175 sc->evq_max = MIN(rxq_allocated, sc->evq_max); 176 sc->evq_max = MIN(txq_allocated - (SFXGE_TXQ_NTYPES - 1), 177 sc->evq_max); 178 179 KASSERT(sc->evq_max <= evq_max, 180 ("allocated more than maximum requested")); 181 182 #ifdef RSS 183 if (sc->evq_max < rss_getnumbuckets()) 184 device_printf(sc->dev, "The number of allocated queues (%u) " 185 "is less than the number of RSS buckets (%u); " 186 "performance degradation might be observed", 187 sc->evq_max, rss_getnumbuckets()); 188 #endif 189 190 /* 191 * NIC is kept initialized in the case of success to be able to 192 * initialize port to find out media types. 193 */ 194 return (0); 195 } 196 197 static int 198 sfxge_set_drv_limits(struct sfxge_softc *sc) 199 { 200 efx_drv_limits_t limits; 201 202 memset(&limits, 0, sizeof(limits)); 203 204 /* Limits are strict since take into account initial estimation */ 205 limits.edl_min_evq_count = limits.edl_max_evq_count = 206 sc->intr.n_alloc; 207 limits.edl_min_txq_count = limits.edl_max_txq_count = 208 sc->intr.n_alloc + SFXGE_TXQ_NTYPES - 1; 209 limits.edl_min_rxq_count = limits.edl_max_rxq_count = 210 sc->intr.n_alloc; 211 212 return (efx_nic_set_drv_limits(sc->enp, &limits)); 213 } 214 215 static int 216 sfxge_start(struct sfxge_softc *sc) 217 { 218 int rc; 219 220 SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc); 221 222 if (sc->init_state == SFXGE_STARTED) 223 return (0); 224 225 if (sc->init_state != SFXGE_REGISTERED) { 226 rc = EINVAL; 227 goto fail; 228 } 229 230 /* Set required resource limits */ 231 if ((rc = sfxge_set_drv_limits(sc)) != 0) 232 goto fail; 233 234 if ((rc = efx_nic_init(sc->enp)) != 0) 235 goto fail; 236 237 /* Start processing interrupts. */ 238 if ((rc = sfxge_intr_start(sc)) != 0) 239 goto fail2; 240 241 /* Start processing events. */ 242 if ((rc = sfxge_ev_start(sc)) != 0) 243 goto fail3; 244 245 /* Fire up the port. */ 246 if ((rc = sfxge_port_start(sc)) != 0) 247 goto fail4; 248 249 /* Start the receiver side. */ 250 if ((rc = sfxge_rx_start(sc)) != 0) 251 goto fail5; 252 253 /* Start the transmitter side. */ 254 if ((rc = sfxge_tx_start(sc)) != 0) 255 goto fail6; 256 257 sc->init_state = SFXGE_STARTED; 258 259 /* Tell the stack we're running. */ 260 sc->ifnet->if_drv_flags |= IFF_DRV_RUNNING; 261 sc->ifnet->if_drv_flags &= ~IFF_DRV_OACTIVE; 262 263 return (0); 264 265 fail6: 266 sfxge_rx_stop(sc); 267 268 fail5: 269 sfxge_port_stop(sc); 270 271 fail4: 272 sfxge_ev_stop(sc); 273 274 fail3: 275 sfxge_intr_stop(sc); 276 277 fail2: 278 efx_nic_fini(sc->enp); 279 280 fail: 281 device_printf(sc->dev, "sfxge_start: %d\n", rc); 282 283 return (rc); 284 } 285 286 static void 287 sfxge_if_init(void *arg) 288 { 289 struct sfxge_softc *sc; 290 291 sc = (struct sfxge_softc *)arg; 292 293 SFXGE_ADAPTER_LOCK(sc); 294 (void)sfxge_start(sc); 295 SFXGE_ADAPTER_UNLOCK(sc); 296 } 297 298 static void 299 sfxge_stop(struct sfxge_softc *sc) 300 { 301 SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc); 302 303 if (sc->init_state != SFXGE_STARTED) 304 return; 305 306 sc->init_state = SFXGE_REGISTERED; 307 308 /* Stop the transmitter. */ 309 sfxge_tx_stop(sc); 310 311 /* Stop the receiver. */ 312 sfxge_rx_stop(sc); 313 314 /* Stop the port. */ 315 sfxge_port_stop(sc); 316 317 /* Stop processing events. */ 318 sfxge_ev_stop(sc); 319 320 /* Stop processing interrupts. */ 321 sfxge_intr_stop(sc); 322 323 efx_nic_fini(sc->enp); 324 325 sc->ifnet->if_drv_flags &= ~IFF_DRV_RUNNING; 326 } 327 328 329 static int 330 sfxge_vpd_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ioc) 331 { 332 efx_vpd_value_t value; 333 int rc = 0; 334 335 switch (ioc->u.vpd.op) { 336 case SFXGE_VPD_OP_GET_KEYWORD: 337 value.evv_tag = ioc->u.vpd.tag; 338 value.evv_keyword = ioc->u.vpd.keyword; 339 rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value); 340 if (rc != 0) 341 break; 342 ioc->u.vpd.len = MIN(ioc->u.vpd.len, value.evv_length); 343 if (ioc->u.vpd.payload != 0) { 344 rc = copyout(value.evv_value, ioc->u.vpd.payload, 345 ioc->u.vpd.len); 346 } 347 break; 348 case SFXGE_VPD_OP_SET_KEYWORD: 349 if (ioc->u.vpd.len > sizeof(value.evv_value)) 350 return (EINVAL); 351 value.evv_tag = ioc->u.vpd.tag; 352 value.evv_keyword = ioc->u.vpd.keyword; 353 value.evv_length = ioc->u.vpd.len; 354 rc = copyin(ioc->u.vpd.payload, value.evv_value, value.evv_length); 355 if (rc != 0) 356 break; 357 rc = efx_vpd_set(sc->enp, sc->vpd_data, sc->vpd_size, &value); 358 if (rc != 0) 359 break; 360 rc = efx_vpd_verify(sc->enp, sc->vpd_data, sc->vpd_size); 361 if (rc != 0) 362 break; 363 rc = efx_vpd_write(sc->enp, sc->vpd_data, sc->vpd_size); 364 break; 365 default: 366 rc = EOPNOTSUPP; 367 break; 368 } 369 370 return (rc); 371 } 372 373 static int 374 sfxge_private_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ioc) 375 { 376 switch (ioc->op) { 377 case SFXGE_MCDI_IOC: 378 return (sfxge_mcdi_ioctl(sc, ioc)); 379 case SFXGE_NVRAM_IOC: 380 return (sfxge_nvram_ioctl(sc, ioc)); 381 case SFXGE_VPD_IOC: 382 return (sfxge_vpd_ioctl(sc, ioc)); 383 default: 384 return (EOPNOTSUPP); 385 } 386 } 387 388 389 static int 390 sfxge_if_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data) 391 { 392 struct sfxge_softc *sc; 393 struct ifreq *ifr; 394 sfxge_ioc_t ioc; 395 int error; 396 397 ifr = (struct ifreq *)data; 398 sc = ifp->if_softc; 399 error = 0; 400 401 switch (command) { 402 case SIOCSIFFLAGS: 403 SFXGE_ADAPTER_LOCK(sc); 404 if (ifp->if_flags & IFF_UP) { 405 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 406 if ((ifp->if_flags ^ sc->if_flags) & 407 (IFF_PROMISC | IFF_ALLMULTI)) { 408 sfxge_mac_filter_set(sc); 409 } 410 } else 411 sfxge_start(sc); 412 } else 413 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 414 sfxge_stop(sc); 415 sc->if_flags = ifp->if_flags; 416 SFXGE_ADAPTER_UNLOCK(sc); 417 break; 418 case SIOCSIFMTU: 419 if (ifr->ifr_mtu == ifp->if_mtu) { 420 /* Nothing to do */ 421 error = 0; 422 } else if (ifr->ifr_mtu > SFXGE_MAX_MTU) { 423 error = EINVAL; 424 } else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 425 ifp->if_mtu = ifr->ifr_mtu; 426 error = 0; 427 } else { 428 /* Restart required */ 429 SFXGE_ADAPTER_LOCK(sc); 430 sfxge_stop(sc); 431 ifp->if_mtu = ifr->ifr_mtu; 432 error = sfxge_start(sc); 433 SFXGE_ADAPTER_UNLOCK(sc); 434 if (error != 0) { 435 ifp->if_flags &= ~IFF_UP; 436 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 437 if_down(ifp); 438 } 439 } 440 break; 441 case SIOCADDMULTI: 442 case SIOCDELMULTI: 443 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 444 sfxge_mac_filter_set(sc); 445 break; 446 case SIOCSIFCAP: 447 { 448 int reqcap = ifr->ifr_reqcap; 449 int capchg_mask; 450 451 SFXGE_ADAPTER_LOCK(sc); 452 453 /* Capabilities to be changed in accordance with request */ 454 capchg_mask = ifp->if_capenable ^ reqcap; 455 456 /* 457 * The networking core already rejects attempts to 458 * enable capabilities we don't have. We still have 459 * to reject attempts to disable capabilities that we 460 * can't (yet) disable. 461 */ 462 KASSERT((reqcap & ~ifp->if_capabilities) == 0, 463 ("Unsupported capabilities 0x%x requested 0x%x vs " 464 "supported 0x%x", 465 reqcap & ~ifp->if_capabilities, 466 reqcap , ifp->if_capabilities)); 467 if (capchg_mask & SFXGE_CAP_FIXED) { 468 error = EINVAL; 469 SFXGE_ADAPTER_UNLOCK(sc); 470 break; 471 } 472 473 /* Check request before any changes */ 474 if ((capchg_mask & IFCAP_TSO4) && 475 (reqcap & (IFCAP_TSO4 | IFCAP_TXCSUM)) == IFCAP_TSO4) { 476 error = EAGAIN; 477 SFXGE_ADAPTER_UNLOCK(sc); 478 if_printf(ifp, "enable txcsum before tso4\n"); 479 break; 480 } 481 if ((capchg_mask & IFCAP_TSO6) && 482 (reqcap & (IFCAP_TSO6 | IFCAP_TXCSUM_IPV6)) == IFCAP_TSO6) { 483 error = EAGAIN; 484 SFXGE_ADAPTER_UNLOCK(sc); 485 if_printf(ifp, "enable txcsum6 before tso6\n"); 486 break; 487 } 488 489 if (reqcap & IFCAP_TXCSUM) { 490 ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP); 491 } else { 492 ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP); 493 if (reqcap & IFCAP_TSO4) { 494 reqcap &= ~IFCAP_TSO4; 495 if_printf(ifp, 496 "tso4 disabled due to -txcsum\n"); 497 } 498 } 499 if (reqcap & IFCAP_TXCSUM_IPV6) { 500 ifp->if_hwassist |= (CSUM_TCP_IPV6 | CSUM_UDP_IPV6); 501 } else { 502 ifp->if_hwassist &= ~(CSUM_TCP_IPV6 | CSUM_UDP_IPV6); 503 if (reqcap & IFCAP_TSO6) { 504 reqcap &= ~IFCAP_TSO6; 505 if_printf(ifp, 506 "tso6 disabled due to -txcsum6\n"); 507 } 508 } 509 510 /* 511 * The kernel takes both IFCAP_TSOx and CSUM_TSO into 512 * account before using TSO. So, we do not touch 513 * checksum flags when IFCAP_TSOx is modified. 514 * Note that CSUM_TSO is (CSUM_IP_TSO|CSUM_IP6_TSO), 515 * but both bits are set in IPv4 and IPv6 mbufs. 516 */ 517 518 ifp->if_capenable = reqcap; 519 520 SFXGE_ADAPTER_UNLOCK(sc); 521 break; 522 } 523 case SIOCSIFMEDIA: 524 case SIOCGIFMEDIA: 525 error = ifmedia_ioctl(ifp, ifr, &sc->media, command); 526 break; 527 #ifdef SIOCGI2C 528 case SIOCGI2C: 529 { 530 struct ifi2creq i2c; 531 532 error = copyin(ifr_data_get_ptr(ifr), &i2c, sizeof(i2c)); 533 if (error != 0) 534 break; 535 536 if (i2c.len > sizeof(i2c.data)) { 537 error = EINVAL; 538 break; 539 } 540 541 SFXGE_ADAPTER_LOCK(sc); 542 error = efx_phy_module_get_info(sc->enp, i2c.dev_addr, 543 i2c.offset, i2c.len, 544 &i2c.data[0]); 545 SFXGE_ADAPTER_UNLOCK(sc); 546 if (error == 0) 547 error = copyout(&i2c, ifr_data_get_ptr(ifr), 548 sizeof(i2c)); 549 break; 550 } 551 #endif 552 case SIOCGPRIVATE_0: 553 error = priv_check(curthread, PRIV_DRIVER); 554 if (error != 0) 555 break; 556 error = copyin(ifr_data_get_ptr(ifr), &ioc, sizeof(ioc)); 557 if (error != 0) 558 return (error); 559 error = sfxge_private_ioctl(sc, &ioc); 560 if (error == 0) { 561 error = copyout(&ioc, ifr_data_get_ptr(ifr), 562 sizeof(ioc)); 563 } 564 break; 565 default: 566 error = ether_ioctl(ifp, command, data); 567 } 568 569 return (error); 570 } 571 572 static void 573 sfxge_ifnet_fini(struct ifnet *ifp) 574 { 575 struct sfxge_softc *sc = ifp->if_softc; 576 577 SFXGE_ADAPTER_LOCK(sc); 578 sfxge_stop(sc); 579 SFXGE_ADAPTER_UNLOCK(sc); 580 581 ifmedia_removeall(&sc->media); 582 ether_ifdetach(ifp); 583 if_free(ifp); 584 } 585 586 static int 587 sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc) 588 { 589 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp); 590 device_t dev; 591 int rc; 592 593 dev = sc->dev; 594 sc->ifnet = ifp; 595 596 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 597 ifp->if_init = sfxge_if_init; 598 ifp->if_softc = sc; 599 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 600 ifp->if_ioctl = sfxge_if_ioctl; 601 602 ifp->if_capabilities = SFXGE_CAP; 603 ifp->if_capenable = SFXGE_CAP_ENABLE; 604 ifp->if_hw_tsomax = SFXGE_TSO_MAX_SIZE; 605 ifp->if_hw_tsomaxsegcount = SFXGE_TX_MAPPING_MAX_SEG; 606 ifp->if_hw_tsomaxsegsize = PAGE_SIZE; 607 608 #ifdef SFXGE_LRO 609 ifp->if_capabilities |= IFCAP_LRO; 610 ifp->if_capenable |= IFCAP_LRO; 611 #endif 612 613 if (encp->enc_hw_tx_insert_vlan_enabled) { 614 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING; 615 ifp->if_capenable |= IFCAP_VLAN_HWTAGGING; 616 } 617 ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO | 618 CSUM_TCP_IPV6 | CSUM_UDP_IPV6; 619 620 ether_ifattach(ifp, encp->enc_mac_addr); 621 622 ifp->if_transmit = sfxge_if_transmit; 623 ifp->if_qflush = sfxge_if_qflush; 624 625 ifp->if_get_counter = sfxge_get_counter; 626 627 DBGPRINT(sc->dev, "ifmedia_init"); 628 if ((rc = sfxge_port_ifmedia_init(sc)) != 0) 629 goto fail; 630 631 return (0); 632 633 fail: 634 ether_ifdetach(sc->ifnet); 635 return (rc); 636 } 637 638 void 639 sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp) 640 { 641 KASSERT(sc->buffer_table_next + n <= 642 efx_nic_cfg_get(sc->enp)->enc_buftbl_limit, 643 ("buffer table full")); 644 645 *idp = sc->buffer_table_next; 646 sc->buffer_table_next += n; 647 } 648 649 static int 650 sfxge_bar_init(struct sfxge_softc *sc) 651 { 652 efsys_bar_t *esbp = &sc->bar; 653 654 esbp->esb_rid = PCIR_BAR(EFX_MEM_BAR); 655 if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY, 656 &esbp->esb_rid, RF_ACTIVE)) == NULL) { 657 device_printf(sc->dev, "Cannot allocate BAR region %d\n", 658 EFX_MEM_BAR); 659 return (ENXIO); 660 } 661 esbp->esb_tag = rman_get_bustag(esbp->esb_res); 662 esbp->esb_handle = rman_get_bushandle(esbp->esb_res); 663 664 SFXGE_BAR_LOCK_INIT(esbp, device_get_nameunit(sc->dev)); 665 666 return (0); 667 } 668 669 static void 670 sfxge_bar_fini(struct sfxge_softc *sc) 671 { 672 efsys_bar_t *esbp = &sc->bar; 673 674 bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid, 675 esbp->esb_res); 676 SFXGE_BAR_LOCK_DESTROY(esbp); 677 } 678 679 static int 680 sfxge_create(struct sfxge_softc *sc) 681 { 682 device_t dev; 683 efx_nic_t *enp; 684 int error; 685 char rss_param_name[sizeof(SFXGE_PARAM(%d.max_rss_channels))]; 686 #if EFSYS_OPT_MCDI_LOGGING 687 char mcdi_log_param_name[sizeof(SFXGE_PARAM(%d.mcdi_logging))]; 688 #endif 689 690 dev = sc->dev; 691 692 SFXGE_ADAPTER_LOCK_INIT(sc, device_get_nameunit(sc->dev)); 693 694 sc->max_rss_channels = 0; 695 snprintf(rss_param_name, sizeof(rss_param_name), 696 SFXGE_PARAM(%d.max_rss_channels), 697 (int)device_get_unit(dev)); 698 TUNABLE_INT_FETCH(rss_param_name, &sc->max_rss_channels); 699 #if EFSYS_OPT_MCDI_LOGGING 700 sc->mcdi_logging = sfxge_mcdi_logging; 701 snprintf(mcdi_log_param_name, sizeof(mcdi_log_param_name), 702 SFXGE_PARAM(%d.mcdi_logging), 703 (int)device_get_unit(dev)); 704 TUNABLE_INT_FETCH(mcdi_log_param_name, &sc->mcdi_logging); 705 #endif 706 707 sc->stats_node = SYSCTL_ADD_NODE( 708 device_get_sysctl_ctx(dev), 709 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 710 OID_AUTO, "stats", CTLFLAG_RD, NULL, "Statistics"); 711 if (sc->stats_node == NULL) { 712 error = ENOMEM; 713 goto fail; 714 } 715 716 TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc); 717 718 (void) pci_enable_busmaster(dev); 719 720 /* Initialize DMA mappings. */ 721 DBGPRINT(sc->dev, "dma_init..."); 722 if ((error = sfxge_dma_init(sc)) != 0) 723 goto fail; 724 725 /* Map the device registers. */ 726 DBGPRINT(sc->dev, "bar_init..."); 727 if ((error = sfxge_bar_init(sc)) != 0) 728 goto fail; 729 730 error = efx_family(pci_get_vendor(dev), pci_get_device(dev), 731 &sc->family); 732 KASSERT(error == 0, ("Family should be filtered by sfxge_probe()")); 733 734 DBGPRINT(sc->dev, "nic_create..."); 735 736 /* Create the common code nic object. */ 737 SFXGE_EFSYS_LOCK_INIT(&sc->enp_lock, 738 device_get_nameunit(sc->dev), "nic"); 739 if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc, 740 &sc->bar, &sc->enp_lock, &enp)) != 0) 741 goto fail3; 742 sc->enp = enp; 743 744 /* Initialize MCDI to talk to the microcontroller. */ 745 DBGPRINT(sc->dev, "mcdi_init..."); 746 if ((error = sfxge_mcdi_init(sc)) != 0) 747 goto fail4; 748 749 /* Probe the NIC and build the configuration data area. */ 750 DBGPRINT(sc->dev, "nic_probe..."); 751 if ((error = efx_nic_probe(enp)) != 0) 752 goto fail5; 753 754 if (!ISP2(sfxge_rx_ring_entries) || 755 (sfxge_rx_ring_entries < EFX_RXQ_MINNDESCS) || 756 (sfxge_rx_ring_entries > EFX_RXQ_MAXNDESCS)) { 757 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u", 758 SFXGE_PARAM_RX_RING, sfxge_rx_ring_entries, 759 EFX_RXQ_MINNDESCS, EFX_RXQ_MAXNDESCS); 760 error = EINVAL; 761 goto fail_rx_ring_entries; 762 } 763 sc->rxq_entries = sfxge_rx_ring_entries; 764 765 if (!ISP2(sfxge_tx_ring_entries) || 766 (sfxge_tx_ring_entries < EFX_TXQ_MINNDESCS) || 767 (sfxge_tx_ring_entries > EFX_TXQ_MAXNDESCS(efx_nic_cfg_get(enp)))) { 768 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u", 769 SFXGE_PARAM_TX_RING, sfxge_tx_ring_entries, 770 EFX_TXQ_MINNDESCS, EFX_TXQ_MAXNDESCS(efx_nic_cfg_get(enp))); 771 error = EINVAL; 772 goto fail_tx_ring_entries; 773 } 774 sc->txq_entries = sfxge_tx_ring_entries; 775 776 SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev), 777 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 778 OID_AUTO, "version", CTLFLAG_RD, 779 SFXGE_VERSION_STRING, 0, 780 "Driver version"); 781 782 SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev), 783 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 784 OID_AUTO, "phy_type", CTLFLAG_RD, 785 NULL, efx_nic_cfg_get(enp)->enc_phy_type, 786 "PHY type"); 787 788 /* Initialize the NVRAM. */ 789 DBGPRINT(sc->dev, "nvram_init..."); 790 if ((error = efx_nvram_init(enp)) != 0) 791 goto fail6; 792 793 /* Initialize the VPD. */ 794 DBGPRINT(sc->dev, "vpd_init..."); 795 if ((error = efx_vpd_init(enp)) != 0) 796 goto fail7; 797 798 efx_mcdi_new_epoch(enp); 799 800 /* Reset the NIC. */ 801 DBGPRINT(sc->dev, "nic_reset..."); 802 if ((error = efx_nic_reset(enp)) != 0) 803 goto fail8; 804 805 /* Initialize buffer table allocation. */ 806 sc->buffer_table_next = 0; 807 808 /* 809 * Guarantee minimum and estimate maximum number of event queues 810 * to take it into account when MSI-X interrupts are allocated. 811 * It initializes NIC and keeps it initialized on success. 812 */ 813 if ((error = sfxge_estimate_rsrc_limits(sc)) != 0) 814 goto fail8; 815 816 /* Set up interrupts. */ 817 DBGPRINT(sc->dev, "intr_init..."); 818 if ((error = sfxge_intr_init(sc)) != 0) 819 goto fail9; 820 821 /* Initialize event processing state. */ 822 DBGPRINT(sc->dev, "ev_init..."); 823 if ((error = sfxge_ev_init(sc)) != 0) 824 goto fail11; 825 826 /* Initialize port state. */ 827 DBGPRINT(sc->dev, "port_init..."); 828 if ((error = sfxge_port_init(sc)) != 0) 829 goto fail12; 830 831 /* Initialize receive state. */ 832 DBGPRINT(sc->dev, "rx_init..."); 833 if ((error = sfxge_rx_init(sc)) != 0) 834 goto fail13; 835 836 /* Initialize transmit state. */ 837 DBGPRINT(sc->dev, "tx_init..."); 838 if ((error = sfxge_tx_init(sc)) != 0) 839 goto fail14; 840 841 sc->init_state = SFXGE_INITIALIZED; 842 843 DBGPRINT(sc->dev, "success"); 844 return (0); 845 846 fail14: 847 sfxge_rx_fini(sc); 848 849 fail13: 850 sfxge_port_fini(sc); 851 852 fail12: 853 sfxge_ev_fini(sc); 854 855 fail11: 856 sfxge_intr_fini(sc); 857 858 fail9: 859 efx_nic_fini(sc->enp); 860 861 fail8: 862 efx_vpd_fini(enp); 863 864 fail7: 865 efx_nvram_fini(enp); 866 867 fail6: 868 fail_tx_ring_entries: 869 fail_rx_ring_entries: 870 efx_nic_unprobe(enp); 871 872 fail5: 873 sfxge_mcdi_fini(sc); 874 875 fail4: 876 sc->enp = NULL; 877 efx_nic_destroy(enp); 878 SFXGE_EFSYS_LOCK_DESTROY(&sc->enp_lock); 879 880 fail3: 881 sfxge_bar_fini(sc); 882 (void) pci_disable_busmaster(sc->dev); 883 884 fail: 885 DBGPRINT(sc->dev, "failed %d", error); 886 sc->dev = NULL; 887 SFXGE_ADAPTER_LOCK_DESTROY(sc); 888 return (error); 889 } 890 891 static void 892 sfxge_destroy(struct sfxge_softc *sc) 893 { 894 efx_nic_t *enp; 895 896 /* Clean up transmit state. */ 897 sfxge_tx_fini(sc); 898 899 /* Clean up receive state. */ 900 sfxge_rx_fini(sc); 901 902 /* Clean up port state. */ 903 sfxge_port_fini(sc); 904 905 /* Clean up event processing state. */ 906 sfxge_ev_fini(sc); 907 908 /* Clean up interrupts. */ 909 sfxge_intr_fini(sc); 910 911 /* Tear down common code subsystems. */ 912 efx_nic_reset(sc->enp); 913 efx_vpd_fini(sc->enp); 914 efx_nvram_fini(sc->enp); 915 efx_nic_unprobe(sc->enp); 916 917 /* Tear down MCDI. */ 918 sfxge_mcdi_fini(sc); 919 920 /* Destroy common code context. */ 921 enp = sc->enp; 922 sc->enp = NULL; 923 efx_nic_destroy(enp); 924 925 /* Free DMA memory. */ 926 sfxge_dma_fini(sc); 927 928 /* Free mapped BARs. */ 929 sfxge_bar_fini(sc); 930 931 (void) pci_disable_busmaster(sc->dev); 932 933 taskqueue_drain(taskqueue_thread, &sc->task_reset); 934 935 /* Destroy the softc lock. */ 936 SFXGE_ADAPTER_LOCK_DESTROY(sc); 937 } 938 939 static int 940 sfxge_vpd_handler(SYSCTL_HANDLER_ARGS) 941 { 942 struct sfxge_softc *sc = arg1; 943 efx_vpd_value_t value; 944 int rc; 945 946 value.evv_tag = arg2 >> 16; 947 value.evv_keyword = arg2 & 0xffff; 948 if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value)) 949 != 0) 950 return (rc); 951 952 return (SYSCTL_OUT(req, value.evv_value, value.evv_length)); 953 } 954 955 static void 956 sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list, 957 efx_vpd_tag_t tag, const char *keyword) 958 { 959 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev); 960 efx_vpd_value_t value; 961 962 /* Check whether VPD tag/keyword is present */ 963 value.evv_tag = tag; 964 value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]); 965 if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0) 966 return; 967 968 SYSCTL_ADD_PROC( 969 ctx, list, OID_AUTO, keyword, CTLTYPE_STRING|CTLFLAG_RD, 970 sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]), 971 sfxge_vpd_handler, "A", ""); 972 } 973 974 static int 975 sfxge_vpd_init(struct sfxge_softc *sc) 976 { 977 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev); 978 struct sysctl_oid *vpd_node; 979 struct sysctl_oid_list *vpd_list; 980 char keyword[3]; 981 efx_vpd_value_t value; 982 int rc; 983 984 if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0) { 985 /* 986 * Unpriviledged functions deny VPD access. 987 * Simply skip VPD in this case. 988 */ 989 if (rc == EACCES) 990 goto done; 991 goto fail; 992 } 993 sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK); 994 if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0) 995 goto fail2; 996 997 /* Copy ID (product name) into device description, and log it. */ 998 value.evv_tag = EFX_VPD_ID; 999 if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) { 1000 value.evv_value[value.evv_length] = 0; 1001 device_set_desc_copy(sc->dev, value.evv_value); 1002 device_printf(sc->dev, "%s\n", value.evv_value); 1003 } 1004 1005 vpd_node = SYSCTL_ADD_NODE( 1006 ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)), 1007 OID_AUTO, "vpd", CTLFLAG_RD, NULL, "Vital Product Data"); 1008 vpd_list = SYSCTL_CHILDREN(vpd_node); 1009 1010 /* Add sysctls for all expected and any vendor-defined keywords. */ 1011 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN"); 1012 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC"); 1013 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN"); 1014 keyword[0] = 'V'; 1015 keyword[2] = 0; 1016 for (keyword[1] = '0'; keyword[1] <= '9'; keyword[1]++) 1017 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword); 1018 for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++) 1019 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword); 1020 1021 done: 1022 return (0); 1023 1024 fail2: 1025 free(sc->vpd_data, M_SFXGE); 1026 fail: 1027 return (rc); 1028 } 1029 1030 static void 1031 sfxge_vpd_fini(struct sfxge_softc *sc) 1032 { 1033 free(sc->vpd_data, M_SFXGE); 1034 } 1035 1036 static void 1037 sfxge_reset(void *arg, int npending) 1038 { 1039 struct sfxge_softc *sc; 1040 int rc; 1041 unsigned attempt; 1042 1043 (void)npending; 1044 1045 sc = (struct sfxge_softc *)arg; 1046 1047 SFXGE_ADAPTER_LOCK(sc); 1048 1049 if (sc->init_state != SFXGE_STARTED) 1050 goto done; 1051 1052 sfxge_stop(sc); 1053 efx_nic_reset(sc->enp); 1054 for (attempt = 0; attempt < sfxge_restart_attempts; ++attempt) { 1055 if ((rc = sfxge_start(sc)) == 0) 1056 goto done; 1057 1058 device_printf(sc->dev, "start on reset failed (%d)\n", rc); 1059 DELAY(100000); 1060 } 1061 1062 device_printf(sc->dev, "reset failed; interface is now stopped\n"); 1063 1064 done: 1065 SFXGE_ADAPTER_UNLOCK(sc); 1066 } 1067 1068 void 1069 sfxge_schedule_reset(struct sfxge_softc *sc) 1070 { 1071 taskqueue_enqueue(taskqueue_thread, &sc->task_reset); 1072 } 1073 1074 static int 1075 sfxge_attach(device_t dev) 1076 { 1077 struct sfxge_softc *sc; 1078 struct ifnet *ifp; 1079 int error; 1080 1081 sc = device_get_softc(dev); 1082 sc->dev = dev; 1083 1084 /* Allocate ifnet. */ 1085 ifp = if_alloc(IFT_ETHER); 1086 if (ifp == NULL) { 1087 device_printf(dev, "Couldn't allocate ifnet\n"); 1088 error = ENOMEM; 1089 goto fail; 1090 } 1091 sc->ifnet = ifp; 1092 1093 /* Initialize hardware. */ 1094 DBGPRINT(sc->dev, "create nic"); 1095 if ((error = sfxge_create(sc)) != 0) 1096 goto fail2; 1097 1098 /* Create the ifnet for the port. */ 1099 DBGPRINT(sc->dev, "init ifnet"); 1100 if ((error = sfxge_ifnet_init(ifp, sc)) != 0) 1101 goto fail3; 1102 1103 DBGPRINT(sc->dev, "init vpd"); 1104 if ((error = sfxge_vpd_init(sc)) != 0) 1105 goto fail4; 1106 1107 /* 1108 * NIC is initialized inside sfxge_create() and kept inialized 1109 * to be able to initialize port to discover media types in 1110 * sfxge_ifnet_init(). 1111 */ 1112 efx_nic_fini(sc->enp); 1113 1114 sc->init_state = SFXGE_REGISTERED; 1115 1116 DBGPRINT(sc->dev, "success"); 1117 return (0); 1118 1119 fail4: 1120 sfxge_ifnet_fini(ifp); 1121 fail3: 1122 efx_nic_fini(sc->enp); 1123 sfxge_destroy(sc); 1124 1125 fail2: 1126 if_free(sc->ifnet); 1127 1128 fail: 1129 DBGPRINT(sc->dev, "failed %d", error); 1130 return (error); 1131 } 1132 1133 static int 1134 sfxge_detach(device_t dev) 1135 { 1136 struct sfxge_softc *sc; 1137 1138 sc = device_get_softc(dev); 1139 1140 sfxge_vpd_fini(sc); 1141 1142 /* Destroy the ifnet. */ 1143 sfxge_ifnet_fini(sc->ifnet); 1144 1145 /* Tear down hardware. */ 1146 sfxge_destroy(sc); 1147 1148 return (0); 1149 } 1150 1151 static int 1152 sfxge_probe(device_t dev) 1153 { 1154 uint16_t pci_vendor_id; 1155 uint16_t pci_device_id; 1156 efx_family_t family; 1157 int rc; 1158 1159 pci_vendor_id = pci_get_vendor(dev); 1160 pci_device_id = pci_get_device(dev); 1161 1162 DBGPRINT(dev, "PCI ID %04x:%04x", pci_vendor_id, pci_device_id); 1163 rc = efx_family(pci_vendor_id, pci_device_id, &family); 1164 if (rc != 0) { 1165 DBGPRINT(dev, "efx_family fail %d", rc); 1166 return (ENXIO); 1167 } 1168 1169 if (family == EFX_FAMILY_SIENA) { 1170 device_set_desc(dev, "Solarflare SFC9000 family"); 1171 return (0); 1172 } 1173 1174 if (family == EFX_FAMILY_HUNTINGTON) { 1175 device_set_desc(dev, "Solarflare SFC9100 family"); 1176 return (0); 1177 } 1178 1179 if (family == EFX_FAMILY_MEDFORD) { 1180 device_set_desc(dev, "Solarflare SFC9200 family"); 1181 return (0); 1182 } 1183 1184 DBGPRINT(dev, "impossible controller family %d", family); 1185 return (ENXIO); 1186 } 1187 1188 static device_method_t sfxge_methods[] = { 1189 DEVMETHOD(device_probe, sfxge_probe), 1190 DEVMETHOD(device_attach, sfxge_attach), 1191 DEVMETHOD(device_detach, sfxge_detach), 1192 1193 DEVMETHOD_END 1194 }; 1195 1196 static devclass_t sfxge_devclass; 1197 1198 static driver_t sfxge_driver = { 1199 "sfxge", 1200 sfxge_methods, 1201 sizeof(struct sfxge_softc) 1202 }; 1203 1204 DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0); 1205