1 /*- 2 * Copyright (c) 2010-2011 Solarflare Communications, Inc. 3 * All rights reserved. 4 * 5 * This software was developed in part by Philip Paeps under contract for 6 * Solarflare Communications, Inc. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/kernel.h> 35 #include <sys/bus.h> 36 #include <sys/rman.h> 37 #include <sys/lock.h> 38 #include <sys/module.h> 39 #include <sys/mutex.h> 40 #include <sys/smp.h> 41 #include <sys/socket.h> 42 #include <sys/taskqueue.h> 43 #include <sys/sockio.h> 44 #include <sys/sysctl.h> 45 #include <sys/syslog.h> 46 47 #include <dev/pci/pcireg.h> 48 #include <dev/pci/pcivar.h> 49 50 #include <net/ethernet.h> 51 #include <net/if.h> 52 #include <net/if_var.h> 53 #include <net/if_media.h> 54 #include <net/if_types.h> 55 56 #include "common/efx.h" 57 58 #include "sfxge.h" 59 #include "sfxge_rx.h" 60 #include "sfxge_version.h" 61 62 #define SFXGE_CAP (IFCAP_VLAN_MTU | IFCAP_VLAN_HWCSUM | \ 63 IFCAP_RXCSUM | IFCAP_TXCSUM | \ 64 IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6 | \ 65 IFCAP_TSO4 | IFCAP_TSO6 | \ 66 IFCAP_JUMBO_MTU | \ 67 IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE | IFCAP_HWSTATS) 68 #define SFXGE_CAP_ENABLE SFXGE_CAP 69 #define SFXGE_CAP_FIXED (IFCAP_VLAN_MTU | \ 70 IFCAP_JUMBO_MTU | IFCAP_LINKSTATE | IFCAP_HWSTATS) 71 72 MALLOC_DEFINE(M_SFXGE, "sfxge", "Solarflare 10GigE driver"); 73 74 75 SYSCTL_NODE(_hw, OID_AUTO, sfxge, CTLFLAG_RD, 0, 76 "SFXGE driver parameters"); 77 78 #define SFXGE_PARAM_RX_RING SFXGE_PARAM(rx_ring) 79 static int sfxge_rx_ring_entries = SFXGE_NDESCS; 80 TUNABLE_INT(SFXGE_PARAM_RX_RING, &sfxge_rx_ring_entries); 81 SYSCTL_INT(_hw_sfxge, OID_AUTO, rx_ring, CTLFLAG_RDTUN, 82 &sfxge_rx_ring_entries, 0, 83 "Maximum number of descriptors in a receive ring"); 84 85 #define SFXGE_PARAM_TX_RING SFXGE_PARAM(tx_ring) 86 static int sfxge_tx_ring_entries = SFXGE_NDESCS; 87 TUNABLE_INT(SFXGE_PARAM_TX_RING, &sfxge_tx_ring_entries); 88 SYSCTL_INT(_hw_sfxge, OID_AUTO, tx_ring, CTLFLAG_RDTUN, 89 &sfxge_tx_ring_entries, 0, 90 "Maximum number of descriptors in a transmit ring"); 91 92 static void 93 sfxge_reset(void *arg, int npending); 94 95 static int 96 sfxge_start(struct sfxge_softc *sc) 97 { 98 int rc; 99 100 SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc); 101 102 if (sc->init_state == SFXGE_STARTED) 103 return (0); 104 105 if (sc->init_state != SFXGE_REGISTERED) { 106 rc = EINVAL; 107 goto fail; 108 } 109 110 if ((rc = efx_nic_init(sc->enp)) != 0) 111 goto fail; 112 113 /* Start processing interrupts. */ 114 if ((rc = sfxge_intr_start(sc)) != 0) 115 goto fail2; 116 117 /* Start processing events. */ 118 if ((rc = sfxge_ev_start(sc)) != 0) 119 goto fail3; 120 121 /* Start the receiver side. */ 122 if ((rc = sfxge_rx_start(sc)) != 0) 123 goto fail4; 124 125 /* Start the transmitter side. */ 126 if ((rc = sfxge_tx_start(sc)) != 0) 127 goto fail5; 128 129 /* Fire up the port. */ 130 if ((rc = sfxge_port_start(sc)) != 0) 131 goto fail6; 132 133 sc->init_state = SFXGE_STARTED; 134 135 /* Tell the stack we're running. */ 136 sc->ifnet->if_drv_flags |= IFF_DRV_RUNNING; 137 sc->ifnet->if_drv_flags &= ~IFF_DRV_OACTIVE; 138 139 return (0); 140 141 fail6: 142 sfxge_tx_stop(sc); 143 144 fail5: 145 sfxge_rx_stop(sc); 146 147 fail4: 148 sfxge_ev_stop(sc); 149 150 fail3: 151 sfxge_intr_stop(sc); 152 153 fail2: 154 efx_nic_fini(sc->enp); 155 156 fail: 157 device_printf(sc->dev, "sfxge_start: %d\n", rc); 158 159 return (rc); 160 } 161 162 static void 163 sfxge_if_init(void *arg) 164 { 165 struct sfxge_softc *sc; 166 167 sc = (struct sfxge_softc *)arg; 168 169 SFXGE_ADAPTER_LOCK(sc); 170 (void)sfxge_start(sc); 171 SFXGE_ADAPTER_UNLOCK(sc); 172 } 173 174 static void 175 sfxge_stop(struct sfxge_softc *sc) 176 { 177 SFXGE_ADAPTER_LOCK_ASSERT_OWNED(sc); 178 179 if (sc->init_state != SFXGE_STARTED) 180 return; 181 182 sc->init_state = SFXGE_REGISTERED; 183 184 /* Stop the port. */ 185 sfxge_port_stop(sc); 186 187 /* Stop the transmitter. */ 188 sfxge_tx_stop(sc); 189 190 /* Stop the receiver. */ 191 sfxge_rx_stop(sc); 192 193 /* Stop processing events. */ 194 sfxge_ev_stop(sc); 195 196 /* Stop processing interrupts. */ 197 sfxge_intr_stop(sc); 198 199 efx_nic_fini(sc->enp); 200 201 sc->ifnet->if_drv_flags &= ~IFF_DRV_RUNNING; 202 } 203 204 static int 205 sfxge_if_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data) 206 { 207 struct sfxge_softc *sc; 208 struct ifreq *ifr; 209 int error; 210 211 ifr = (struct ifreq *)data; 212 sc = ifp->if_softc; 213 error = 0; 214 215 switch (command) { 216 case SIOCSIFFLAGS: 217 SFXGE_ADAPTER_LOCK(sc); 218 if (ifp->if_flags & IFF_UP) { 219 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 220 if ((ifp->if_flags ^ sc->if_flags) & 221 (IFF_PROMISC | IFF_ALLMULTI)) { 222 sfxge_mac_filter_set(sc); 223 } 224 } else 225 sfxge_start(sc); 226 } else 227 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 228 sfxge_stop(sc); 229 sc->if_flags = ifp->if_flags; 230 SFXGE_ADAPTER_UNLOCK(sc); 231 break; 232 case SIOCSIFMTU: 233 if (ifr->ifr_mtu == ifp->if_mtu) { 234 /* Nothing to do */ 235 error = 0; 236 } else if (ifr->ifr_mtu > SFXGE_MAX_MTU) { 237 error = EINVAL; 238 } else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 239 ifp->if_mtu = ifr->ifr_mtu; 240 error = 0; 241 } else { 242 /* Restart required */ 243 SFXGE_ADAPTER_LOCK(sc); 244 sfxge_stop(sc); 245 ifp->if_mtu = ifr->ifr_mtu; 246 error = sfxge_start(sc); 247 SFXGE_ADAPTER_UNLOCK(sc); 248 if (error != 0) { 249 ifp->if_flags &= ~IFF_UP; 250 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 251 if_down(ifp); 252 } 253 } 254 break; 255 case SIOCADDMULTI: 256 case SIOCDELMULTI: 257 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 258 sfxge_mac_filter_set(sc); 259 break; 260 case SIOCSIFCAP: 261 { 262 int reqcap = ifr->ifr_reqcap; 263 int capchg_mask; 264 265 SFXGE_ADAPTER_LOCK(sc); 266 267 /* Capabilities to be changed in accordance with request */ 268 capchg_mask = ifp->if_capenable ^ reqcap; 269 270 /* 271 * The networking core already rejects attempts to 272 * enable capabilities we don't have. We still have 273 * to reject attempts to disable capabilities that we 274 * can't (yet) disable. 275 */ 276 KASSERT((reqcap & ~ifp->if_capabilities) == 0, 277 ("Unsupported capabilities %x requested %x vs %x", 278 reqcap & ~ifp->if_capabilities, 279 reqcap , ifp->if_capabilities)); 280 if (capchg_mask & SFXGE_CAP_FIXED) { 281 error = EINVAL; 282 SFXGE_ADAPTER_UNLOCK(sc); 283 break; 284 } 285 286 /* Check request before any changes */ 287 if ((capchg_mask & IFCAP_TSO4) && 288 (reqcap & (IFCAP_TSO4 | IFCAP_TXCSUM)) == IFCAP_TSO4) { 289 error = EAGAIN; 290 SFXGE_ADAPTER_UNLOCK(sc); 291 if_printf(ifp, "enable txcsum before tso4\n"); 292 break; 293 } 294 if ((capchg_mask & IFCAP_TSO6) && 295 (reqcap & (IFCAP_TSO6 | IFCAP_TXCSUM_IPV6)) == IFCAP_TSO6) { 296 error = EAGAIN; 297 SFXGE_ADAPTER_UNLOCK(sc); 298 if_printf(ifp, "enable txcsum6 before tso6\n"); 299 break; 300 } 301 302 if (reqcap & IFCAP_TXCSUM) { 303 ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP); 304 } else { 305 ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP); 306 if (reqcap & IFCAP_TSO4) { 307 reqcap &= ~IFCAP_TSO4; 308 if_printf(ifp, 309 "tso4 disabled due to -txcsum\n"); 310 } 311 } 312 if (reqcap & IFCAP_TXCSUM_IPV6) { 313 ifp->if_hwassist |= (CSUM_TCP_IPV6 | CSUM_UDP_IPV6); 314 } else { 315 ifp->if_hwassist &= ~(CSUM_TCP_IPV6 | CSUM_UDP_IPV6); 316 if (reqcap & IFCAP_TSO6) { 317 reqcap &= ~IFCAP_TSO6; 318 if_printf(ifp, 319 "tso6 disabled due to -txcsum6\n"); 320 } 321 } 322 323 /* 324 * The kernel takes both IFCAP_TSOx and CSUM_TSO into 325 * account before using TSO. So, we do not touch 326 * checksum flags when IFCAP_TSOx is modified. 327 * Note that CSUM_TSO is (CSUM_IP_TSO|CSUM_IP6_TSO), 328 * but both bits are set in IPv4 and IPv6 mbufs. 329 */ 330 331 ifp->if_capenable = reqcap; 332 333 SFXGE_ADAPTER_UNLOCK(sc); 334 break; 335 } 336 case SIOCSIFMEDIA: 337 case SIOCGIFMEDIA: 338 error = ifmedia_ioctl(ifp, ifr, &sc->media, command); 339 break; 340 default: 341 error = ether_ioctl(ifp, command, data); 342 } 343 344 return (error); 345 } 346 347 static void 348 sfxge_ifnet_fini(struct ifnet *ifp) 349 { 350 struct sfxge_softc *sc = ifp->if_softc; 351 352 SFXGE_ADAPTER_LOCK(sc); 353 sfxge_stop(sc); 354 SFXGE_ADAPTER_UNLOCK(sc); 355 356 ifmedia_removeall(&sc->media); 357 ether_ifdetach(ifp); 358 if_free(ifp); 359 } 360 361 static int 362 sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc) 363 { 364 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp); 365 device_t dev; 366 int rc; 367 368 dev = sc->dev; 369 sc->ifnet = ifp; 370 371 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 372 ifp->if_init = sfxge_if_init; 373 ifp->if_softc = sc; 374 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 375 ifp->if_ioctl = sfxge_if_ioctl; 376 377 ifp->if_capabilities = SFXGE_CAP; 378 ifp->if_capenable = SFXGE_CAP_ENABLE; 379 380 #ifdef SFXGE_LRO 381 ifp->if_capabilities |= IFCAP_LRO; 382 ifp->if_capenable |= IFCAP_LRO; 383 #endif 384 385 ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO | 386 CSUM_TCP_IPV6 | CSUM_UDP_IPV6; 387 388 ether_ifattach(ifp, encp->enc_mac_addr); 389 390 ifp->if_transmit = sfxge_if_transmit; 391 ifp->if_qflush = sfxge_if_qflush; 392 393 ifp->if_get_counter = sfxge_get_counter; 394 395 if ((rc = sfxge_port_ifmedia_init(sc)) != 0) 396 goto fail; 397 398 return (0); 399 400 fail: 401 ether_ifdetach(sc->ifnet); 402 return (rc); 403 } 404 405 void 406 sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp) 407 { 408 KASSERT(sc->buffer_table_next + n <= 409 efx_nic_cfg_get(sc->enp)->enc_buftbl_limit, 410 ("buffer table full")); 411 412 *idp = sc->buffer_table_next; 413 sc->buffer_table_next += n; 414 } 415 416 static int 417 sfxge_bar_init(struct sfxge_softc *sc) 418 { 419 efsys_bar_t *esbp = &sc->bar; 420 421 esbp->esb_rid = PCIR_BAR(EFX_MEM_BAR); 422 if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY, 423 &esbp->esb_rid, RF_ACTIVE)) == NULL) { 424 device_printf(sc->dev, "Cannot allocate BAR region %d\n", 425 EFX_MEM_BAR); 426 return (ENXIO); 427 } 428 esbp->esb_tag = rman_get_bustag(esbp->esb_res); 429 esbp->esb_handle = rman_get_bushandle(esbp->esb_res); 430 431 SFXGE_BAR_LOCK_INIT(esbp, device_get_nameunit(sc->dev)); 432 433 return (0); 434 } 435 436 static void 437 sfxge_bar_fini(struct sfxge_softc *sc) 438 { 439 efsys_bar_t *esbp = &sc->bar; 440 441 bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid, 442 esbp->esb_res); 443 SFXGE_BAR_LOCK_DESTROY(esbp); 444 } 445 446 static int 447 sfxge_create(struct sfxge_softc *sc) 448 { 449 device_t dev; 450 efx_nic_t *enp; 451 int error; 452 char rss_param_name[sizeof(SFXGE_PARAM(%d.max_rss_channels))]; 453 454 dev = sc->dev; 455 456 SFXGE_ADAPTER_LOCK_INIT(sc, device_get_nameunit(sc->dev)); 457 458 sc->max_rss_channels = 0; 459 snprintf(rss_param_name, sizeof(rss_param_name), 460 SFXGE_PARAM(%d.max_rss_channels), 461 (int)device_get_unit(dev)); 462 TUNABLE_INT_FETCH(rss_param_name, &sc->max_rss_channels); 463 464 sc->stats_node = SYSCTL_ADD_NODE( 465 device_get_sysctl_ctx(dev), 466 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 467 OID_AUTO, "stats", CTLFLAG_RD, NULL, "Statistics"); 468 if (sc->stats_node == NULL) { 469 error = ENOMEM; 470 goto fail; 471 } 472 473 TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc); 474 475 (void) pci_enable_busmaster(dev); 476 477 /* Initialize DMA mappings. */ 478 if ((error = sfxge_dma_init(sc)) != 0) 479 goto fail; 480 481 /* Map the device registers. */ 482 if ((error = sfxge_bar_init(sc)) != 0) 483 goto fail; 484 485 error = efx_family(pci_get_vendor(dev), pci_get_device(dev), 486 &sc->family); 487 KASSERT(error == 0, ("Family should be filtered by sfxge_probe()")); 488 489 /* Create the common code nic object. */ 490 SFXGE_EFSYS_LOCK_INIT(&sc->enp_lock, 491 device_get_nameunit(sc->dev), "nic"); 492 if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc, 493 &sc->bar, &sc->enp_lock, &enp)) != 0) 494 goto fail3; 495 sc->enp = enp; 496 497 if (!ISP2(sfxge_rx_ring_entries) || 498 !(sfxge_rx_ring_entries & EFX_RXQ_NDESCS_MASK)) { 499 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u", 500 SFXGE_PARAM_RX_RING, sfxge_rx_ring_entries, 501 EFX_RXQ_MINNDESCS, EFX_RXQ_MAXNDESCS); 502 error = EINVAL; 503 goto fail_rx_ring_entries; 504 } 505 sc->rxq_entries = sfxge_rx_ring_entries; 506 507 if (!ISP2(sfxge_tx_ring_entries) || 508 !(sfxge_tx_ring_entries & EFX_TXQ_NDESCS_MASK)) { 509 log(LOG_ERR, "%s=%d must be power of 2 from %u to %u", 510 SFXGE_PARAM_TX_RING, sfxge_tx_ring_entries, 511 EFX_TXQ_MINNDESCS, EFX_TXQ_MAXNDESCS); 512 error = EINVAL; 513 goto fail_tx_ring_entries; 514 } 515 sc->txq_entries = sfxge_tx_ring_entries; 516 517 /* Initialize MCDI to talk to the microcontroller. */ 518 if ((error = sfxge_mcdi_init(sc)) != 0) 519 goto fail4; 520 521 /* Probe the NIC and build the configuration data area. */ 522 if ((error = efx_nic_probe(enp)) != 0) 523 goto fail5; 524 525 SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev), 526 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 527 OID_AUTO, "version", CTLFLAG_RD, 528 SFXGE_VERSION_STRING, 0, 529 "Driver version"); 530 531 /* Initialize the NVRAM. */ 532 if ((error = efx_nvram_init(enp)) != 0) 533 goto fail6; 534 535 /* Initialize the VPD. */ 536 if ((error = efx_vpd_init(enp)) != 0) 537 goto fail7; 538 539 /* Reset the NIC. */ 540 if ((error = efx_nic_reset(enp)) != 0) 541 goto fail8; 542 543 /* Initialize buffer table allocation. */ 544 sc->buffer_table_next = 0; 545 546 /* Set up interrupts. */ 547 if ((error = sfxge_intr_init(sc)) != 0) 548 goto fail8; 549 550 /* Initialize event processing state. */ 551 if ((error = sfxge_ev_init(sc)) != 0) 552 goto fail11; 553 554 /* Initialize receive state. */ 555 if ((error = sfxge_rx_init(sc)) != 0) 556 goto fail12; 557 558 /* Initialize transmit state. */ 559 if ((error = sfxge_tx_init(sc)) != 0) 560 goto fail13; 561 562 /* Initialize port state. */ 563 if ((error = sfxge_port_init(sc)) != 0) 564 goto fail14; 565 566 sc->init_state = SFXGE_INITIALIZED; 567 568 return (0); 569 570 fail14: 571 sfxge_tx_fini(sc); 572 573 fail13: 574 sfxge_rx_fini(sc); 575 576 fail12: 577 sfxge_ev_fini(sc); 578 579 fail11: 580 sfxge_intr_fini(sc); 581 582 fail8: 583 efx_vpd_fini(enp); 584 585 fail7: 586 efx_nvram_fini(enp); 587 588 fail6: 589 efx_nic_unprobe(enp); 590 591 fail5: 592 sfxge_mcdi_fini(sc); 593 594 fail4: 595 fail_tx_ring_entries: 596 fail_rx_ring_entries: 597 sc->enp = NULL; 598 efx_nic_destroy(enp); 599 SFXGE_EFSYS_LOCK_DESTROY(&sc->enp_lock); 600 601 fail3: 602 sfxge_bar_fini(sc); 603 (void) pci_disable_busmaster(sc->dev); 604 605 fail: 606 sc->dev = NULL; 607 SFXGE_ADAPTER_LOCK_DESTROY(sc); 608 return (error); 609 } 610 611 static void 612 sfxge_destroy(struct sfxge_softc *sc) 613 { 614 efx_nic_t *enp; 615 616 /* Clean up port state. */ 617 sfxge_port_fini(sc); 618 619 /* Clean up transmit state. */ 620 sfxge_tx_fini(sc); 621 622 /* Clean up receive state. */ 623 sfxge_rx_fini(sc); 624 625 /* Clean up event processing state. */ 626 sfxge_ev_fini(sc); 627 628 /* Clean up interrupts. */ 629 sfxge_intr_fini(sc); 630 631 /* Tear down common code subsystems. */ 632 efx_nic_reset(sc->enp); 633 efx_vpd_fini(sc->enp); 634 efx_nvram_fini(sc->enp); 635 efx_nic_unprobe(sc->enp); 636 637 /* Tear down MCDI. */ 638 sfxge_mcdi_fini(sc); 639 640 /* Destroy common code context. */ 641 enp = sc->enp; 642 sc->enp = NULL; 643 efx_nic_destroy(enp); 644 645 /* Free DMA memory. */ 646 sfxge_dma_fini(sc); 647 648 /* Free mapped BARs. */ 649 sfxge_bar_fini(sc); 650 651 (void) pci_disable_busmaster(sc->dev); 652 653 taskqueue_drain(taskqueue_thread, &sc->task_reset); 654 655 /* Destroy the softc lock. */ 656 SFXGE_ADAPTER_LOCK_DESTROY(sc); 657 } 658 659 static int 660 sfxge_vpd_handler(SYSCTL_HANDLER_ARGS) 661 { 662 struct sfxge_softc *sc = arg1; 663 efx_vpd_value_t value; 664 int rc; 665 666 value.evv_tag = arg2 >> 16; 667 value.evv_keyword = arg2 & 0xffff; 668 if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value)) 669 != 0) 670 return (rc); 671 672 return (SYSCTL_OUT(req, value.evv_value, value.evv_length)); 673 } 674 675 static void 676 sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list, 677 efx_vpd_tag_t tag, const char *keyword) 678 { 679 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev); 680 efx_vpd_value_t value; 681 682 /* Check whether VPD tag/keyword is present */ 683 value.evv_tag = tag; 684 value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]); 685 if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0) 686 return; 687 688 SYSCTL_ADD_PROC( 689 ctx, list, OID_AUTO, keyword, CTLTYPE_STRING|CTLFLAG_RD, 690 sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]), 691 sfxge_vpd_handler, "A", ""); 692 } 693 694 static int 695 sfxge_vpd_init(struct sfxge_softc *sc) 696 { 697 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev); 698 struct sysctl_oid *vpd_node; 699 struct sysctl_oid_list *vpd_list; 700 char keyword[3]; 701 efx_vpd_value_t value; 702 int rc; 703 704 if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0) 705 goto fail; 706 sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK); 707 if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0) 708 goto fail2; 709 710 /* Copy ID (product name) into device description, and log it. */ 711 value.evv_tag = EFX_VPD_ID; 712 if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) { 713 value.evv_value[value.evv_length] = 0; 714 device_set_desc_copy(sc->dev, value.evv_value); 715 device_printf(sc->dev, "%s\n", value.evv_value); 716 } 717 718 vpd_node = SYSCTL_ADD_NODE( 719 ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)), 720 OID_AUTO, "vpd", CTLFLAG_RD, NULL, "Vital Product Data"); 721 vpd_list = SYSCTL_CHILDREN(vpd_node); 722 723 /* Add sysctls for all expected and any vendor-defined keywords. */ 724 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN"); 725 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC"); 726 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN"); 727 keyword[0] = 'V'; 728 keyword[2] = 0; 729 for (keyword[1] = '0'; keyword[1] <= '9'; keyword[1]++) 730 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword); 731 for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++) 732 sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword); 733 734 return (0); 735 736 fail2: 737 free(sc->vpd_data, M_SFXGE); 738 fail: 739 return (rc); 740 } 741 742 static void 743 sfxge_vpd_fini(struct sfxge_softc *sc) 744 { 745 free(sc->vpd_data, M_SFXGE); 746 } 747 748 static void 749 sfxge_reset(void *arg, int npending) 750 { 751 struct sfxge_softc *sc; 752 int rc; 753 754 (void)npending; 755 756 sc = (struct sfxge_softc *)arg; 757 758 SFXGE_ADAPTER_LOCK(sc); 759 760 if (sc->init_state != SFXGE_STARTED) 761 goto done; 762 763 sfxge_stop(sc); 764 efx_nic_reset(sc->enp); 765 if ((rc = sfxge_start(sc)) != 0) 766 device_printf(sc->dev, 767 "reset failed (%d); interface is now stopped\n", 768 rc); 769 770 done: 771 SFXGE_ADAPTER_UNLOCK(sc); 772 } 773 774 void 775 sfxge_schedule_reset(struct sfxge_softc *sc) 776 { 777 taskqueue_enqueue(taskqueue_thread, &sc->task_reset); 778 } 779 780 static int 781 sfxge_attach(device_t dev) 782 { 783 struct sfxge_softc *sc; 784 struct ifnet *ifp; 785 int error; 786 787 sc = device_get_softc(dev); 788 sc->dev = dev; 789 790 /* Allocate ifnet. */ 791 ifp = if_alloc(IFT_ETHER); 792 if (ifp == NULL) { 793 device_printf(dev, "Couldn't allocate ifnet\n"); 794 error = ENOMEM; 795 goto fail; 796 } 797 sc->ifnet = ifp; 798 799 /* Initialize hardware. */ 800 if ((error = sfxge_create(sc)) != 0) 801 goto fail2; 802 803 /* Create the ifnet for the port. */ 804 if ((error = sfxge_ifnet_init(ifp, sc)) != 0) 805 goto fail3; 806 807 if ((error = sfxge_vpd_init(sc)) != 0) 808 goto fail4; 809 810 sc->init_state = SFXGE_REGISTERED; 811 812 return (0); 813 814 fail4: 815 sfxge_ifnet_fini(ifp); 816 fail3: 817 sfxge_destroy(sc); 818 819 fail2: 820 if_free(sc->ifnet); 821 822 fail: 823 return (error); 824 } 825 826 static int 827 sfxge_detach(device_t dev) 828 { 829 struct sfxge_softc *sc; 830 831 sc = device_get_softc(dev); 832 833 sfxge_vpd_fini(sc); 834 835 /* Destroy the ifnet. */ 836 sfxge_ifnet_fini(sc->ifnet); 837 838 /* Tear down hardware. */ 839 sfxge_destroy(sc); 840 841 return (0); 842 } 843 844 static int 845 sfxge_probe(device_t dev) 846 { 847 uint16_t pci_vendor_id; 848 uint16_t pci_device_id; 849 efx_family_t family; 850 int rc; 851 852 pci_vendor_id = pci_get_vendor(dev); 853 pci_device_id = pci_get_device(dev); 854 855 rc = efx_family(pci_vendor_id, pci_device_id, &family); 856 if (rc != 0) 857 return (ENXIO); 858 859 KASSERT(family == EFX_FAMILY_SIENA, ("impossible controller family")); 860 device_set_desc(dev, "Solarflare SFC9000 family"); 861 return (0); 862 } 863 864 static device_method_t sfxge_methods[] = { 865 DEVMETHOD(device_probe, sfxge_probe), 866 DEVMETHOD(device_attach, sfxge_attach), 867 DEVMETHOD(device_detach, sfxge_detach), 868 869 DEVMETHOD_END 870 }; 871 872 static devclass_t sfxge_devclass; 873 874 static driver_t sfxge_driver = { 875 "sfxge", 876 sfxge_methods, 877 sizeof(struct sfxge_softc) 878 }; 879 880 DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0); 881