1 /* 2 * Copyright (C) 2015 Cavium Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 * 28 */ 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include "opt_inet.h" 33 #include "opt_inet6.h" 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/bitset.h> 38 #include <sys/bitstring.h> 39 #include <sys/bus.h> 40 #include <sys/endian.h> 41 #include <sys/kernel.h> 42 #include <sys/malloc.h> 43 #include <sys/mbuf.h> 44 #include <sys/module.h> 45 #include <sys/rman.h> 46 #include <sys/pciio.h> 47 #include <sys/pcpu.h> 48 #include <sys/proc.h> 49 #include <sys/socket.h> 50 #include <sys/sockio.h> 51 #include <sys/stdatomic.h> 52 #include <sys/cpuset.h> 53 #include <sys/lock.h> 54 #include <sys/mutex.h> 55 #include <sys/smp.h> 56 #include <sys/taskqueue.h> 57 58 #include <net/bpf.h> 59 #include <net/ethernet.h> 60 #include <net/if.h> 61 #include <net/if_var.h> 62 #include <net/if_arp.h> 63 #include <net/if_dl.h> 64 #include <net/if_media.h> 65 #include <net/if_types.h> 66 #include <net/if_vlan_var.h> 67 68 #include <netinet/in.h> 69 #include <netinet/ip.h> 70 #include <netinet/if_ether.h> 71 #include <netinet/tcp_lro.h> 72 73 #include <dev/pci/pcireg.h> 74 #include <dev/pci/pcivar.h> 75 76 #include <sys/dnv.h> 77 #include <sys/nv.h> 78 #include <sys/iov_schema.h> 79 80 #include <machine/bus.h> 81 82 #include "thunder_bgx.h" 83 #include "nic_reg.h" 84 #include "nic.h" 85 #include "nicvf_queues.h" 86 87 #define VNIC_VF_DEVSTR "Cavium Thunder NIC Virtual Function Driver" 88 89 #define VNIC_VF_REG_RID PCIR_BAR(PCI_CFG_REG_BAR_NUM) 90 91 /* Lock for core interface settings */ 92 #define NICVF_CORE_LOCK_INIT(nic) \ 93 sx_init(&(nic)->core_sx, device_get_nameunit((nic)->dev)) 94 95 #define NICVF_CORE_LOCK_DESTROY(nic) \ 96 sx_destroy(&(nic)->core_sx) 97 98 #define NICVF_CORE_LOCK(nic) sx_xlock(&(nic)->core_sx) 99 #define NICVF_CORE_UNLOCK(nic) sx_xunlock(&(nic)->core_sx) 100 101 #define NICVF_CORE_LOCK_ASSERT(nic) sx_assert(&(nic)->core_sx, SA_XLOCKED) 102 103 #define SPEED_10 10 104 #define SPEED_100 100 105 #define SPEED_1000 1000 106 #define SPEED_10000 10000 107 #define SPEED_40000 40000 108 109 MALLOC_DEFINE(M_NICVF, "nicvf", "ThunderX VNIC VF dynamic memory"); 110 111 static int nicvf_probe(device_t); 112 static int nicvf_attach(device_t); 113 static int nicvf_detach(device_t); 114 115 static device_method_t nicvf_methods[] = { 116 /* Device interface */ 117 DEVMETHOD(device_probe, nicvf_probe), 118 DEVMETHOD(device_attach, nicvf_attach), 119 DEVMETHOD(device_detach, nicvf_detach), 120 121 DEVMETHOD_END, 122 }; 123 124 static driver_t nicvf_driver = { 125 "vnic", 126 nicvf_methods, 127 sizeof(struct nicvf), 128 }; 129 130 static devclass_t nicvf_devclass; 131 132 DRIVER_MODULE(vnicvf, pci, nicvf_driver, nicvf_devclass, 0, 0); 133 MODULE_VERSION(vnicvf, 1); 134 MODULE_DEPEND(vnicvf, pci, 1, 1, 1); 135 MODULE_DEPEND(vnicvf, ether, 1, 1, 1); 136 MODULE_DEPEND(vnicvf, vnicpf, 1, 1, 1); 137 138 static int nicvf_allocate_misc_interrupt(struct nicvf *); 139 static int nicvf_enable_misc_interrupt(struct nicvf *); 140 static int nicvf_allocate_net_interrupts(struct nicvf *); 141 static void nicvf_release_all_interrupts(struct nicvf *); 142 static int nicvf_update_hw_max_frs(struct nicvf *, int); 143 static int nicvf_hw_set_mac_addr(struct nicvf *, uint8_t *); 144 static void nicvf_config_cpi(struct nicvf *); 145 static int nicvf_rss_init(struct nicvf *); 146 static int nicvf_init_resources(struct nicvf *); 147 148 static int nicvf_setup_ifnet(struct nicvf *); 149 static int nicvf_setup_ifmedia(struct nicvf *); 150 static void nicvf_hw_addr_random(uint8_t *); 151 152 static int nicvf_if_ioctl(struct ifnet *, u_long, caddr_t); 153 static void nicvf_if_init(void *); 154 static void nicvf_if_init_locked(struct nicvf *); 155 static int nicvf_if_transmit(struct ifnet *, struct mbuf *); 156 static void nicvf_if_qflush(struct ifnet *); 157 static uint64_t nicvf_if_getcounter(struct ifnet *, ift_counter); 158 159 static int nicvf_stop_locked(struct nicvf *); 160 161 static void nicvf_media_status(struct ifnet *, struct ifmediareq *); 162 static int nicvf_media_change(struct ifnet *); 163 164 static void nicvf_tick_stats(void *); 165 166 static int 167 nicvf_probe(device_t dev) 168 { 169 uint16_t vendor_id; 170 uint16_t device_id; 171 172 vendor_id = pci_get_vendor(dev); 173 device_id = pci_get_device(dev); 174 175 if (vendor_id != PCI_VENDOR_ID_CAVIUM) 176 return (ENXIO); 177 178 if (device_id == PCI_DEVICE_ID_THUNDER_NIC_VF || 179 device_id == PCI_DEVICE_ID_THUNDER_PASS1_NIC_VF) { 180 device_set_desc(dev, VNIC_VF_DEVSTR); 181 return (BUS_PROBE_DEFAULT); 182 } 183 184 return (ENXIO); 185 } 186 187 static int 188 nicvf_attach(device_t dev) 189 { 190 struct nicvf *nic; 191 int rid, qcount; 192 int err = 0; 193 uint8_t hwaddr[ETHER_ADDR_LEN]; 194 uint8_t zeromac[] = {[0 ... (ETHER_ADDR_LEN - 1)] = 0}; 195 196 nic = device_get_softc(dev); 197 nic->dev = dev; 198 nic->pnicvf = nic; 199 200 NICVF_CORE_LOCK_INIT(nic); 201 /* Enable HW TSO on Pass2 */ 202 if (!pass1_silicon(dev)) 203 nic->hw_tso = TRUE; 204 205 rid = VNIC_VF_REG_RID; 206 nic->reg_base = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 207 RF_ACTIVE); 208 if (nic->reg_base == NULL) { 209 device_printf(dev, "Could not allocate registers memory\n"); 210 return (ENXIO); 211 } 212 213 qcount = MAX_CMP_QUEUES_PER_QS; 214 nic->max_queues = qcount; 215 216 err = nicvf_set_qset_resources(nic); 217 if (err != 0) 218 goto err_free_res; 219 220 /* Check if PF is alive and get MAC address for this VF */ 221 err = nicvf_allocate_misc_interrupt(nic); 222 if (err != 0) 223 goto err_free_res; 224 225 NICVF_CORE_LOCK(nic); 226 err = nicvf_enable_misc_interrupt(nic); 227 NICVF_CORE_UNLOCK(nic); 228 if (err != 0) 229 goto err_release_intr; 230 231 err = nicvf_allocate_net_interrupts(nic); 232 if (err != 0) { 233 device_printf(dev, 234 "Could not allocate network interface interrupts\n"); 235 goto err_free_ifnet; 236 } 237 238 /* If no MAC address was obtained we generate random one */ 239 if (memcmp(nic->hwaddr, zeromac, ETHER_ADDR_LEN) == 0) { 240 nicvf_hw_addr_random(hwaddr); 241 memcpy(nic->hwaddr, hwaddr, ETHER_ADDR_LEN); 242 NICVF_CORE_LOCK(nic); 243 nicvf_hw_set_mac_addr(nic, hwaddr); 244 NICVF_CORE_UNLOCK(nic); 245 } 246 247 /* Configure CPI alorithm */ 248 nic->cpi_alg = CPI_ALG_NONE; 249 NICVF_CORE_LOCK(nic); 250 nicvf_config_cpi(nic); 251 /* Configure receive side scaling */ 252 if (nic->qs->rq_cnt > 1) 253 nicvf_rss_init(nic); 254 NICVF_CORE_UNLOCK(nic); 255 256 err = nicvf_setup_ifnet(nic); 257 if (err != 0) { 258 device_printf(dev, "Could not set-up ifnet\n"); 259 goto err_release_intr; 260 } 261 262 err = nicvf_setup_ifmedia(nic); 263 if (err != 0) { 264 device_printf(dev, "Could not set-up ifmedia\n"); 265 goto err_free_ifnet; 266 } 267 268 mtx_init(&nic->stats_mtx, "VNIC stats", NULL, MTX_DEF); 269 callout_init_mtx(&nic->stats_callout, &nic->stats_mtx, 0); 270 271 ether_ifattach(nic->ifp, nic->hwaddr); 272 273 return (0); 274 275 err_free_ifnet: 276 if_free(nic->ifp); 277 err_release_intr: 278 nicvf_release_all_interrupts(nic); 279 err_free_res: 280 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(nic->reg_base), 281 nic->reg_base); 282 283 return (err); 284 } 285 286 static int 287 nicvf_detach(device_t dev) 288 { 289 struct nicvf *nic; 290 291 nic = device_get_softc(dev); 292 293 NICVF_CORE_LOCK(nic); 294 /* Shut down the port and release ring resources */ 295 nicvf_stop_locked(nic); 296 /* Release stats lock */ 297 mtx_destroy(&nic->stats_mtx); 298 /* Release interrupts */ 299 nicvf_release_all_interrupts(nic); 300 /* Release memory resource */ 301 if (nic->reg_base != NULL) { 302 bus_release_resource(dev, SYS_RES_MEMORY, 303 rman_get_rid(nic->reg_base), nic->reg_base); 304 } 305 306 /* Remove all ifmedia configurations */ 307 ifmedia_removeall(&nic->if_media); 308 /* Free this ifnet */ 309 if_free(nic->ifp); 310 NICVF_CORE_UNLOCK(nic); 311 /* Finally destroy the lock */ 312 NICVF_CORE_LOCK_DESTROY(nic); 313 314 return (0); 315 } 316 317 static void 318 nicvf_hw_addr_random(uint8_t *hwaddr) 319 { 320 uint32_t rnd; 321 uint8_t addr[ETHER_ADDR_LEN]; 322 323 /* 324 * Create randomized MAC address. 325 * Set 'bsd' + random 24 low-order bits. 326 */ 327 rnd = arc4random() & 0x00ffffff; 328 addr[0] = 'b'; 329 addr[1] = 's'; 330 addr[2] = 'd'; 331 addr[3] = rnd >> 16; 332 addr[4] = rnd >> 8; 333 addr[5] = rnd >> 0; 334 335 memcpy(hwaddr, addr, ETHER_ADDR_LEN); 336 } 337 338 static int 339 nicvf_setup_ifnet(struct nicvf *nic) 340 { 341 struct ifnet *ifp; 342 343 ifp = if_alloc(IFT_ETHER); 344 if (ifp == NULL) { 345 device_printf(nic->dev, "Could not allocate ifnet structure\n"); 346 return (ENOMEM); 347 } 348 349 nic->ifp = ifp; 350 351 if_setsoftc(ifp, nic); 352 if_initname(ifp, device_get_name(nic->dev), device_get_unit(nic->dev)); 353 if_setflags(ifp, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 354 355 if_settransmitfn(ifp, nicvf_if_transmit); 356 if_setqflushfn(ifp, nicvf_if_qflush); 357 if_setioctlfn(ifp, nicvf_if_ioctl); 358 if_setinitfn(ifp, nicvf_if_init); 359 if_setgetcounterfn(ifp, nicvf_if_getcounter); 360 361 if_setmtu(ifp, ETHERMTU); 362 363 /* Reset caps */ 364 if_setcapabilities(ifp, 0); 365 366 /* Set the default values */ 367 if_setcapabilitiesbit(ifp, IFCAP_VLAN_MTU | IFCAP_JUMBO_MTU, 0); 368 if_setcapabilitiesbit(ifp, IFCAP_LRO, 0); 369 if (nic->hw_tso) { 370 /* TSO */ 371 if_setcapabilitiesbit(ifp, IFCAP_TSO4, 0); 372 /* TSO parameters */ 373 if_sethwtsomax(ifp, NICVF_TSO_MAXSIZE); 374 if_sethwtsomaxsegcount(ifp, NICVF_TSO_NSEGS); 375 if_sethwtsomaxsegsize(ifp, MCLBYTES); 376 } 377 /* IP/TCP/UDP HW checksums */ 378 if_setcapabilitiesbit(ifp, IFCAP_HWCSUM, 0); 379 if_setcapabilitiesbit(ifp, IFCAP_HWSTATS, 0); 380 /* 381 * HW offload enable 382 */ 383 if_clearhwassist(ifp); 384 if_sethwassistbits(ifp, (CSUM_IP | CSUM_TCP | CSUM_UDP | CSUM_SCTP), 0); 385 if (nic->hw_tso) 386 if_sethwassistbits(ifp, (CSUM_TSO), 0); 387 if_setcapenable(ifp, if_getcapabilities(ifp)); 388 389 return (0); 390 } 391 392 static int 393 nicvf_setup_ifmedia(struct nicvf *nic) 394 { 395 396 ifmedia_init(&nic->if_media, IFM_IMASK, nicvf_media_change, 397 nicvf_media_status); 398 399 /* 400 * Advertise availability of all possible connection types, 401 * even though not all are possible at the same time. 402 */ 403 404 ifmedia_add(&nic->if_media, (IFM_ETHER | IFM_10_T | IFM_FDX), 405 0, NULL); 406 ifmedia_add(&nic->if_media, (IFM_ETHER | IFM_100_TX | IFM_FDX), 407 0, NULL); 408 ifmedia_add(&nic->if_media, (IFM_ETHER | IFM_1000_T | IFM_FDX), 409 0, NULL); 410 ifmedia_add(&nic->if_media, (IFM_ETHER | IFM_10G_SR | IFM_FDX), 411 0, NULL); 412 ifmedia_add(&nic->if_media, (IFM_ETHER | IFM_40G_CR4 | IFM_FDX), 413 0, NULL); 414 ifmedia_add(&nic->if_media, (IFM_ETHER | IFM_AUTO | IFM_FDX), 415 0, NULL); 416 417 ifmedia_set(&nic->if_media, (IFM_ETHER | IFM_AUTO | IFM_FDX)); 418 419 return (0); 420 } 421 422 static int 423 nicvf_if_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 424 { 425 struct nicvf *nic; 426 struct rcv_queue *rq; 427 struct ifreq *ifr; 428 int mask, err; 429 int rq_idx; 430 #if defined(INET) || defined(INET6) 431 struct ifaddr *ifa; 432 boolean_t avoid_reset = FALSE; 433 #endif 434 435 nic = if_getsoftc(ifp); 436 ifr = (struct ifreq *)data; 437 #if defined(INET) || defined(INET6) 438 ifa = (struct ifaddr *)data; 439 #endif 440 err = 0; 441 switch (cmd) { 442 case SIOCSIFADDR: 443 #ifdef INET 444 if (ifa->ifa_addr->sa_family == AF_INET) 445 avoid_reset = TRUE; 446 #endif 447 #ifdef INET6 448 if (ifa->ifa_addr->sa_family == AF_INET6) 449 avoid_reset = TRUE; 450 #endif 451 452 #if defined(INET) || defined(INET6) 453 /* Avoid reinitialization unless it's necessary */ 454 if (avoid_reset) { 455 if_setflagbits(ifp, IFF_UP, 0); 456 if (!(if_getdrvflags(ifp) & IFF_DRV_RUNNING)) 457 nicvf_if_init(nic); 458 #ifdef INET 459 if (!(if_getflags(ifp) & IFF_NOARP)) 460 arp_ifinit(ifp, ifa); 461 #endif 462 463 return (0); 464 } 465 #endif 466 err = ether_ioctl(ifp, cmd, data); 467 break; 468 case SIOCSIFMTU: 469 if (ifr->ifr_mtu < NIC_HW_MIN_FRS || 470 ifr->ifr_mtu > NIC_HW_MAX_FRS) { 471 err = EINVAL; 472 } else { 473 NICVF_CORE_LOCK(nic); 474 err = nicvf_update_hw_max_frs(nic, ifr->ifr_mtu); 475 if (err == 0) 476 if_setmtu(ifp, ifr->ifr_mtu); 477 NICVF_CORE_UNLOCK(nic); 478 } 479 break; 480 case SIOCSIFFLAGS: 481 NICVF_CORE_LOCK(nic); 482 if (if_getflags(ifp) & IFF_UP) { 483 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) { 484 if ((nic->if_flags & if_getflags(ifp)) & 485 IFF_PROMISC) { 486 /* Change promiscous mode */ 487 #if 0 488 /* ARM64TODO */ 489 nicvf_set_promiscous(nic); 490 #endif 491 } 492 493 if ((nic->if_flags ^ if_getflags(ifp)) & 494 IFF_ALLMULTI) { 495 /* Change multicasting settings */ 496 #if 0 497 /* ARM64TODO */ 498 nicvf_set_multicast(nic); 499 #endif 500 } 501 } else { 502 nicvf_if_init_locked(nic); 503 } 504 } else if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) 505 nicvf_stop_locked(nic); 506 507 nic->if_flags = if_getflags(ifp); 508 NICVF_CORE_UNLOCK(nic); 509 break; 510 511 case SIOCADDMULTI: 512 case SIOCDELMULTI: 513 if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) { 514 #if 0 515 NICVF_CORE_LOCK(nic); 516 /* ARM64TODO */ 517 nicvf_set_multicast(nic); 518 NICVF_CORE_UNLOCK(nic); 519 #endif 520 } 521 break; 522 523 case SIOCSIFMEDIA: 524 case SIOCGIFMEDIA: 525 err = ifmedia_ioctl(ifp, ifr, &nic->if_media, cmd); 526 break; 527 528 case SIOCSIFCAP: 529 mask = if_getcapenable(ifp) ^ ifr->ifr_reqcap; 530 if (mask & IFCAP_VLAN_MTU) { 531 /* No work to do except acknowledge the change took. */ 532 if_togglecapenable(ifp, IFCAP_VLAN_MTU); 533 } 534 if (mask & IFCAP_TXCSUM) 535 if_togglecapenable(ifp, IFCAP_TXCSUM); 536 if (mask & IFCAP_RXCSUM) 537 if_togglecapenable(ifp, IFCAP_RXCSUM); 538 if ((mask & IFCAP_TSO4) && nic->hw_tso) 539 if_togglecapenable(ifp, IFCAP_TSO4); 540 if (mask & IFCAP_LRO) { 541 /* 542 * Lock the driver for a moment to avoid 543 * mismatch in per-queue settings. 544 */ 545 NICVF_CORE_LOCK(nic); 546 if_togglecapenable(ifp, IFCAP_LRO); 547 if ((if_getdrvflags(nic->ifp) & IFF_DRV_RUNNING) != 0) { 548 /* 549 * Now disable LRO for subsequent packets. 550 * Atomicity of this change is not necessary 551 * as we don't need precise toggle of this 552 * feature for all threads processing the 553 * completion queue. 554 */ 555 for (rq_idx = 0; 556 rq_idx < nic->qs->rq_cnt; rq_idx++) { 557 rq = &nic->qs->rq[rq_idx]; 558 rq->lro_enabled = !rq->lro_enabled; 559 } 560 } 561 NICVF_CORE_UNLOCK(nic); 562 } 563 564 break; 565 566 default: 567 err = ether_ioctl(ifp, cmd, data); 568 break; 569 } 570 571 return (err); 572 } 573 574 static void 575 nicvf_if_init_locked(struct nicvf *nic) 576 { 577 struct queue_set *qs = nic->qs; 578 struct ifnet *ifp; 579 int qidx; 580 int err; 581 caddr_t if_addr; 582 583 NICVF_CORE_LOCK_ASSERT(nic); 584 ifp = nic->ifp; 585 586 if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) != 0) 587 nicvf_stop_locked(nic); 588 589 err = nicvf_enable_misc_interrupt(nic); 590 if (err != 0) { 591 if_printf(ifp, "Could not reenable Mbox interrupt\n"); 592 return; 593 } 594 595 /* Get the latest MAC address */ 596 if_addr = if_getlladdr(ifp); 597 /* Update MAC address if changed */ 598 if (memcmp(nic->hwaddr, if_addr, ETHER_ADDR_LEN) != 0) { 599 memcpy(nic->hwaddr, if_addr, ETHER_ADDR_LEN); 600 nicvf_hw_set_mac_addr(nic, if_addr); 601 } 602 603 /* Initialize the queues */ 604 err = nicvf_init_resources(nic); 605 if (err != 0) 606 goto error; 607 608 /* Make sure queue initialization is written */ 609 wmb(); 610 611 nicvf_reg_write(nic, NIC_VF_INT, ~0UL); 612 /* Enable Qset err interrupt */ 613 nicvf_enable_intr(nic, NICVF_INTR_QS_ERR, 0); 614 615 /* Enable completion queue interrupt */ 616 for (qidx = 0; qidx < qs->cq_cnt; qidx++) 617 nicvf_enable_intr(nic, NICVF_INTR_CQ, qidx); 618 619 /* Enable RBDR threshold interrupt */ 620 for (qidx = 0; qidx < qs->rbdr_cnt; qidx++) 621 nicvf_enable_intr(nic, NICVF_INTR_RBDR, qidx); 622 623 nic->drv_stats.txq_stop = 0; 624 nic->drv_stats.txq_wake = 0; 625 626 /* Activate network interface */ 627 if_setdrvflagbits(ifp, IFF_DRV_RUNNING, IFF_DRV_OACTIVE); 628 629 /* Schedule callout to update stats */ 630 callout_reset(&nic->stats_callout, hz, nicvf_tick_stats, nic); 631 632 return; 633 634 error: 635 /* Something went very wrong. Disable this ifnet for good */ 636 if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, IFF_DRV_RUNNING); 637 } 638 639 static void 640 nicvf_if_init(void *if_softc) 641 { 642 struct nicvf *nic = if_softc; 643 644 NICVF_CORE_LOCK(nic); 645 nicvf_if_init_locked(nic); 646 NICVF_CORE_UNLOCK(nic); 647 } 648 649 static int 650 nicvf_if_transmit(struct ifnet *ifp, struct mbuf *mbuf) 651 { 652 struct nicvf *nic = if_getsoftc(ifp); 653 struct queue_set *qs = nic->qs; 654 struct snd_queue *sq; 655 struct mbuf *mtmp; 656 int qidx; 657 int err = 0; 658 659 660 if (__predict_false(qs == NULL)) { 661 panic("%s: missing queue set for %s", __func__, 662 device_get_nameunit(nic->dev)); 663 } 664 665 /* Select queue */ 666 if (M_HASHTYPE_GET(mbuf) != M_HASHTYPE_NONE) 667 qidx = mbuf->m_pkthdr.flowid % qs->sq_cnt; 668 else 669 qidx = curcpu % qs->sq_cnt; 670 671 sq = &qs->sq[qidx]; 672 673 if (mbuf->m_next != NULL && 674 (mbuf->m_pkthdr.csum_flags & 675 (CSUM_IP | CSUM_TCP | CSUM_UDP | CSUM_SCTP)) != 0) { 676 if (M_WRITABLE(mbuf) == 0) { 677 mtmp = m_dup(mbuf, M_NOWAIT); 678 m_freem(mbuf); 679 if (mtmp == NULL) 680 return (ENOBUFS); 681 mbuf = mtmp; 682 } 683 } 684 685 err = drbr_enqueue(ifp, sq->br, mbuf); 686 if (((if_getdrvflags(ifp) & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 687 IFF_DRV_RUNNING) || !nic->link_up || (err != 0)) { 688 /* 689 * Try to enqueue packet to the ring buffer. 690 * If the driver is not active, link down or enqueue operation 691 * failed, return with the appropriate error code. 692 */ 693 return (err); 694 } 695 696 if (NICVF_TX_TRYLOCK(sq) != 0) { 697 err = nicvf_xmit_locked(sq); 698 NICVF_TX_UNLOCK(sq); 699 return (err); 700 } else 701 taskqueue_enqueue(sq->snd_taskq, &sq->snd_task); 702 703 return (0); 704 } 705 706 static void 707 nicvf_if_qflush(struct ifnet *ifp) 708 { 709 struct nicvf *nic; 710 struct queue_set *qs; 711 struct snd_queue *sq; 712 struct mbuf *mbuf; 713 size_t idx; 714 715 nic = if_getsoftc(ifp); 716 qs = nic->qs; 717 718 for (idx = 0; idx < qs->sq_cnt; idx++) { 719 sq = &qs->sq[idx]; 720 NICVF_TX_LOCK(sq); 721 while ((mbuf = buf_ring_dequeue_sc(sq->br)) != NULL) 722 m_freem(mbuf); 723 NICVF_TX_UNLOCK(sq); 724 } 725 if_qflush(ifp); 726 } 727 728 static uint64_t 729 nicvf_if_getcounter(struct ifnet *ifp, ift_counter cnt) 730 { 731 struct nicvf *nic; 732 struct nicvf_hw_stats *hw_stats; 733 struct nicvf_drv_stats *drv_stats; 734 735 nic = if_getsoftc(ifp); 736 hw_stats = &nic->hw_stats; 737 drv_stats = &nic->drv_stats; 738 739 switch (cnt) { 740 case IFCOUNTER_IPACKETS: 741 return (drv_stats->rx_frames_ok); 742 case IFCOUNTER_OPACKETS: 743 return (drv_stats->tx_frames_ok); 744 case IFCOUNTER_IBYTES: 745 return (hw_stats->rx_bytes); 746 case IFCOUNTER_OBYTES: 747 return (hw_stats->tx_bytes_ok); 748 case IFCOUNTER_IMCASTS: 749 return (hw_stats->rx_mcast_frames); 750 case IFCOUNTER_COLLISIONS: 751 return (0); 752 case IFCOUNTER_IQDROPS: 753 return (drv_stats->rx_drops); 754 case IFCOUNTER_OQDROPS: 755 return (drv_stats->tx_drops); 756 default: 757 return (if_get_counter_default(ifp, cnt)); 758 } 759 760 } 761 762 static void 763 nicvf_media_status(struct ifnet *ifp, struct ifmediareq *ifmr) 764 { 765 struct nicvf *nic = if_getsoftc(ifp); 766 767 NICVF_CORE_LOCK(nic); 768 769 ifmr->ifm_status = IFM_AVALID; 770 ifmr->ifm_active = IFM_ETHER; 771 772 if (nic->link_up) { 773 /* Device attached to working network */ 774 ifmr->ifm_status |= IFM_ACTIVE; 775 } 776 777 switch (nic->speed) { 778 case SPEED_10: 779 ifmr->ifm_active |= IFM_10_T; 780 break; 781 case SPEED_100: 782 ifmr->ifm_active |= IFM_100_TX; 783 break; 784 case SPEED_1000: 785 ifmr->ifm_active |= IFM_1000_T; 786 break; 787 case SPEED_10000: 788 ifmr->ifm_active |= IFM_10G_SR; 789 break; 790 case SPEED_40000: 791 ifmr->ifm_active |= IFM_40G_CR4; 792 break; 793 default: 794 ifmr->ifm_active |= IFM_AUTO; 795 break; 796 } 797 798 if (nic->duplex) 799 ifmr->ifm_active |= IFM_FDX; 800 else 801 ifmr->ifm_active |= IFM_HDX; 802 803 NICVF_CORE_UNLOCK(nic); 804 } 805 806 static int 807 nicvf_media_change(struct ifnet *ifp __unused) 808 { 809 810 return (0); 811 } 812 813 /* Register read/write APIs */ 814 void 815 nicvf_reg_write(struct nicvf *nic, bus_space_handle_t offset, uint64_t val) 816 { 817 818 bus_write_8(nic->reg_base, offset, val); 819 } 820 821 uint64_t 822 nicvf_reg_read(struct nicvf *nic, uint64_t offset) 823 { 824 825 return (bus_read_8(nic->reg_base, offset)); 826 } 827 828 void 829 nicvf_queue_reg_write(struct nicvf *nic, bus_space_handle_t offset, 830 uint64_t qidx, uint64_t val) 831 { 832 833 bus_write_8(nic->reg_base, offset + (qidx << NIC_Q_NUM_SHIFT), val); 834 } 835 836 uint64_t 837 nicvf_queue_reg_read(struct nicvf *nic, bus_space_handle_t offset, 838 uint64_t qidx) 839 { 840 841 return (bus_read_8(nic->reg_base, offset + (qidx << NIC_Q_NUM_SHIFT))); 842 } 843 844 /* VF -> PF mailbox communication */ 845 static void 846 nicvf_write_to_mbx(struct nicvf *nic, union nic_mbx *mbx) 847 { 848 uint64_t *msg = (uint64_t *)mbx; 849 850 nicvf_reg_write(nic, NIC_VF_PF_MAILBOX_0_1 + 0, msg[0]); 851 nicvf_reg_write(nic, NIC_VF_PF_MAILBOX_0_1 + 8, msg[1]); 852 } 853 854 int 855 nicvf_send_msg_to_pf(struct nicvf *nic, union nic_mbx *mbx) 856 { 857 int timeout = NIC_MBOX_MSG_TIMEOUT * 10; 858 int sleep = 2; 859 860 NICVF_CORE_LOCK_ASSERT(nic); 861 862 nic->pf_acked = FALSE; 863 nic->pf_nacked = FALSE; 864 865 nicvf_write_to_mbx(nic, mbx); 866 867 /* Wait for previous message to be acked, timeout 2sec */ 868 while (!nic->pf_acked) { 869 if (nic->pf_nacked) 870 return (EINVAL); 871 872 DELAY(sleep * 1000); 873 874 if (nic->pf_acked) 875 break; 876 timeout -= sleep; 877 if (!timeout) { 878 device_printf(nic->dev, 879 "PF didn't ack to mbox msg %d from VF%d\n", 880 (mbx->msg.msg & 0xFF), nic->vf_id); 881 882 return (EBUSY); 883 } 884 } 885 return (0); 886 } 887 888 /* 889 * Checks if VF is able to comminicate with PF 890 * and also gets the VNIC number this VF is associated to. 891 */ 892 static int 893 nicvf_check_pf_ready(struct nicvf *nic) 894 { 895 union nic_mbx mbx = {}; 896 897 mbx.msg.msg = NIC_MBOX_MSG_READY; 898 if (nicvf_send_msg_to_pf(nic, &mbx)) { 899 device_printf(nic->dev, 900 "PF didn't respond to READY msg\n"); 901 return 0; 902 } 903 904 return 1; 905 } 906 907 static void 908 nicvf_read_bgx_stats(struct nicvf *nic, struct bgx_stats_msg *bgx) 909 { 910 911 if (bgx->rx) 912 nic->bgx_stats.rx_stats[bgx->idx] = bgx->stats; 913 else 914 nic->bgx_stats.tx_stats[bgx->idx] = bgx->stats; 915 } 916 917 static void 918 nicvf_handle_mbx_intr(struct nicvf *nic) 919 { 920 union nic_mbx mbx = {}; 921 uint64_t *mbx_data; 922 uint64_t mbx_addr; 923 int i; 924 925 mbx_addr = NIC_VF_PF_MAILBOX_0_1; 926 mbx_data = (uint64_t *)&mbx; 927 928 for (i = 0; i < NIC_PF_VF_MAILBOX_SIZE; i++) { 929 *mbx_data = nicvf_reg_read(nic, mbx_addr); 930 mbx_data++; 931 mbx_addr += sizeof(uint64_t); 932 } 933 934 switch (mbx.msg.msg) { 935 case NIC_MBOX_MSG_READY: 936 nic->pf_acked = TRUE; 937 nic->vf_id = mbx.nic_cfg.vf_id & 0x7F; 938 nic->tns_mode = mbx.nic_cfg.tns_mode & 0x7F; 939 nic->node = mbx.nic_cfg.node_id; 940 memcpy(nic->hwaddr, mbx.nic_cfg.mac_addr, ETHER_ADDR_LEN); 941 nic->loopback_supported = mbx.nic_cfg.loopback_supported; 942 nic->link_up = FALSE; 943 nic->duplex = 0; 944 nic->speed = 0; 945 break; 946 case NIC_MBOX_MSG_ACK: 947 nic->pf_acked = TRUE; 948 break; 949 case NIC_MBOX_MSG_NACK: 950 nic->pf_nacked = TRUE; 951 break; 952 case NIC_MBOX_MSG_RSS_SIZE: 953 nic->rss_info.rss_size = mbx.rss_size.ind_tbl_size; 954 nic->pf_acked = TRUE; 955 break; 956 case NIC_MBOX_MSG_BGX_STATS: 957 nicvf_read_bgx_stats(nic, &mbx.bgx_stats); 958 nic->pf_acked = TRUE; 959 break; 960 case NIC_MBOX_MSG_BGX_LINK_CHANGE: 961 nic->pf_acked = TRUE; 962 nic->link_up = mbx.link_status.link_up; 963 nic->duplex = mbx.link_status.duplex; 964 nic->speed = mbx.link_status.speed; 965 if (nic->link_up) { 966 if_setbaudrate(nic->ifp, nic->speed * 1000000); 967 if_link_state_change(nic->ifp, LINK_STATE_UP); 968 } else { 969 if_setbaudrate(nic->ifp, 0); 970 if_link_state_change(nic->ifp, LINK_STATE_DOWN); 971 } 972 break; 973 default: 974 device_printf(nic->dev, 975 "Invalid message from PF, msg 0x%x\n", mbx.msg.msg); 976 break; 977 } 978 nicvf_clear_intr(nic, NICVF_INTR_MBOX, 0); 979 } 980 981 static int 982 nicvf_update_hw_max_frs(struct nicvf *nic, int mtu) 983 { 984 union nic_mbx mbx = {}; 985 986 mbx.frs.msg = NIC_MBOX_MSG_SET_MAX_FRS; 987 mbx.frs.max_frs = mtu; 988 mbx.frs.vf_id = nic->vf_id; 989 990 return nicvf_send_msg_to_pf(nic, &mbx); 991 } 992 993 static int 994 nicvf_hw_set_mac_addr(struct nicvf *nic, uint8_t *hwaddr) 995 { 996 union nic_mbx mbx = {}; 997 998 mbx.mac.msg = NIC_MBOX_MSG_SET_MAC; 999 mbx.mac.vf_id = nic->vf_id; 1000 memcpy(mbx.mac.mac_addr, hwaddr, ETHER_ADDR_LEN); 1001 1002 return (nicvf_send_msg_to_pf(nic, &mbx)); 1003 } 1004 1005 static void 1006 nicvf_config_cpi(struct nicvf *nic) 1007 { 1008 union nic_mbx mbx = {}; 1009 1010 mbx.cpi_cfg.msg = NIC_MBOX_MSG_CPI_CFG; 1011 mbx.cpi_cfg.vf_id = nic->vf_id; 1012 mbx.cpi_cfg.cpi_alg = nic->cpi_alg; 1013 mbx.cpi_cfg.rq_cnt = nic->qs->rq_cnt; 1014 1015 nicvf_send_msg_to_pf(nic, &mbx); 1016 } 1017 1018 static void 1019 nicvf_get_rss_size(struct nicvf *nic) 1020 { 1021 union nic_mbx mbx = {}; 1022 1023 mbx.rss_size.msg = NIC_MBOX_MSG_RSS_SIZE; 1024 mbx.rss_size.vf_id = nic->vf_id; 1025 nicvf_send_msg_to_pf(nic, &mbx); 1026 } 1027 1028 static void 1029 nicvf_config_rss(struct nicvf *nic) 1030 { 1031 union nic_mbx mbx = {}; 1032 struct nicvf_rss_info *rss; 1033 int ind_tbl_len; 1034 int i, nextq; 1035 1036 rss = &nic->rss_info; 1037 ind_tbl_len = rss->rss_size; 1038 nextq = 0; 1039 1040 mbx.rss_cfg.vf_id = nic->vf_id; 1041 mbx.rss_cfg.hash_bits = rss->hash_bits; 1042 while (ind_tbl_len != 0) { 1043 mbx.rss_cfg.tbl_offset = nextq; 1044 mbx.rss_cfg.tbl_len = MIN(ind_tbl_len, 1045 RSS_IND_TBL_LEN_PER_MBX_MSG); 1046 mbx.rss_cfg.msg = mbx.rss_cfg.tbl_offset ? 1047 NIC_MBOX_MSG_RSS_CFG_CONT : NIC_MBOX_MSG_RSS_CFG; 1048 1049 for (i = 0; i < mbx.rss_cfg.tbl_len; i++) 1050 mbx.rss_cfg.ind_tbl[i] = rss->ind_tbl[nextq++]; 1051 1052 nicvf_send_msg_to_pf(nic, &mbx); 1053 1054 ind_tbl_len -= mbx.rss_cfg.tbl_len; 1055 } 1056 } 1057 1058 static void 1059 nicvf_set_rss_key(struct nicvf *nic) 1060 { 1061 struct nicvf_rss_info *rss; 1062 uint64_t key_addr; 1063 int idx; 1064 1065 rss = &nic->rss_info; 1066 key_addr = NIC_VNIC_RSS_KEY_0_4; 1067 1068 for (idx = 0; idx < RSS_HASH_KEY_SIZE; idx++) { 1069 nicvf_reg_write(nic, key_addr, rss->key[idx]); 1070 key_addr += sizeof(uint64_t); 1071 } 1072 } 1073 1074 static int 1075 nicvf_rss_init(struct nicvf *nic) 1076 { 1077 struct nicvf_rss_info *rss; 1078 int idx; 1079 1080 nicvf_get_rss_size(nic); 1081 1082 rss = &nic->rss_info; 1083 if (nic->cpi_alg != CPI_ALG_NONE) { 1084 rss->enable = FALSE; 1085 rss->hash_bits = 0; 1086 return (ENXIO); 1087 } 1088 1089 rss->enable = TRUE; 1090 1091 /* Using the HW reset value for now */ 1092 rss->key[0] = 0xFEED0BADFEED0BADUL; 1093 rss->key[1] = 0xFEED0BADFEED0BADUL; 1094 rss->key[2] = 0xFEED0BADFEED0BADUL; 1095 rss->key[3] = 0xFEED0BADFEED0BADUL; 1096 rss->key[4] = 0xFEED0BADFEED0BADUL; 1097 1098 nicvf_set_rss_key(nic); 1099 1100 rss->cfg = RSS_IP_HASH_ENA | RSS_TCP_HASH_ENA | RSS_UDP_HASH_ENA; 1101 nicvf_reg_write(nic, NIC_VNIC_RSS_CFG, rss->cfg); 1102 1103 rss->hash_bits = fls(rss->rss_size) - 1; 1104 for (idx = 0; idx < rss->rss_size; idx++) 1105 rss->ind_tbl[idx] = idx % nic->rx_queues; 1106 1107 nicvf_config_rss(nic); 1108 1109 return (0); 1110 } 1111 1112 static int 1113 nicvf_init_resources(struct nicvf *nic) 1114 { 1115 int err; 1116 union nic_mbx mbx = {}; 1117 1118 mbx.msg.msg = NIC_MBOX_MSG_CFG_DONE; 1119 1120 /* Enable Qset */ 1121 nicvf_qset_config(nic, TRUE); 1122 1123 /* Initialize queues and HW for data transfer */ 1124 err = nicvf_config_data_transfer(nic, TRUE); 1125 if (err) { 1126 device_printf(nic->dev, 1127 "Failed to alloc/config VF's QSet resources\n"); 1128 return (err); 1129 } 1130 1131 /* Send VF config done msg to PF */ 1132 nicvf_write_to_mbx(nic, &mbx); 1133 1134 return (0); 1135 } 1136 1137 static void 1138 nicvf_misc_intr_handler(void *arg) 1139 { 1140 struct nicvf *nic = (struct nicvf *)arg; 1141 uint64_t intr; 1142 1143 intr = nicvf_reg_read(nic, NIC_VF_INT); 1144 /* Check for spurious interrupt */ 1145 if (!(intr & NICVF_INTR_MBOX_MASK)) 1146 return; 1147 1148 nicvf_handle_mbx_intr(nic); 1149 } 1150 1151 static int 1152 nicvf_intr_handler(void *arg) 1153 { 1154 struct nicvf *nic; 1155 struct cmp_queue *cq; 1156 int qidx; 1157 1158 cq = (struct cmp_queue *)arg; 1159 nic = cq->nic; 1160 qidx = cq->idx; 1161 1162 /* Disable interrupts */ 1163 nicvf_disable_intr(nic, NICVF_INTR_CQ, qidx); 1164 1165 taskqueue_enqueue(cq->cmp_taskq, &cq->cmp_task); 1166 1167 /* Clear interrupt */ 1168 nicvf_clear_intr(nic, NICVF_INTR_CQ, qidx); 1169 1170 return (FILTER_HANDLED); 1171 } 1172 1173 static void 1174 nicvf_rbdr_intr_handler(void *arg) 1175 { 1176 struct nicvf *nic; 1177 struct queue_set *qs; 1178 struct rbdr *rbdr; 1179 int qidx; 1180 1181 nic = (struct nicvf *)arg; 1182 1183 /* Disable RBDR interrupt and schedule softirq */ 1184 for (qidx = 0; qidx < nic->qs->rbdr_cnt; qidx++) { 1185 if (!nicvf_is_intr_enabled(nic, NICVF_INTR_RBDR, qidx)) 1186 continue; 1187 nicvf_disable_intr(nic, NICVF_INTR_RBDR, qidx); 1188 1189 qs = nic->qs; 1190 rbdr = &qs->rbdr[qidx]; 1191 taskqueue_enqueue(rbdr->rbdr_taskq, &rbdr->rbdr_task_nowait); 1192 /* Clear interrupt */ 1193 nicvf_clear_intr(nic, NICVF_INTR_RBDR, qidx); 1194 } 1195 } 1196 1197 static void 1198 nicvf_qs_err_intr_handler(void *arg) 1199 { 1200 struct nicvf *nic = (struct nicvf *)arg; 1201 struct queue_set *qs = nic->qs; 1202 1203 /* Disable Qset err interrupt and schedule softirq */ 1204 nicvf_disable_intr(nic, NICVF_INTR_QS_ERR, 0); 1205 taskqueue_enqueue(qs->qs_err_taskq, &qs->qs_err_task); 1206 nicvf_clear_intr(nic, NICVF_INTR_QS_ERR, 0); 1207 1208 } 1209 1210 static int 1211 nicvf_enable_msix(struct nicvf *nic) 1212 { 1213 struct pci_devinfo *dinfo; 1214 int rid, count; 1215 int ret; 1216 1217 dinfo = device_get_ivars(nic->dev); 1218 rid = dinfo->cfg.msix.msix_table_bar; 1219 nic->msix_table_res = 1220 bus_alloc_resource_any(nic->dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 1221 if (nic->msix_table_res == NULL) { 1222 device_printf(nic->dev, 1223 "Could not allocate memory for MSI-X table\n"); 1224 return (ENXIO); 1225 } 1226 1227 count = nic->num_vec = NIC_VF_MSIX_VECTORS; 1228 1229 ret = pci_alloc_msix(nic->dev, &count); 1230 if ((ret != 0) || (count != nic->num_vec)) { 1231 device_printf(nic->dev, 1232 "Request for #%d msix vectors failed, error: %d\n", 1233 nic->num_vec, ret); 1234 return (ret); 1235 } 1236 1237 nic->msix_enabled = 1; 1238 return (0); 1239 } 1240 1241 static void 1242 nicvf_disable_msix(struct nicvf *nic) 1243 { 1244 1245 if (nic->msix_enabled) { 1246 pci_release_msi(nic->dev); 1247 nic->msix_enabled = 0; 1248 nic->num_vec = 0; 1249 } 1250 } 1251 1252 static void 1253 nicvf_release_all_interrupts(struct nicvf *nic) 1254 { 1255 struct resource *res; 1256 int irq; 1257 int err; 1258 1259 /* Free registered interrupts */ 1260 for (irq = 0; irq < nic->num_vec; irq++) { 1261 res = nic->msix_entries[irq].irq_res; 1262 if (res == NULL) 1263 continue; 1264 /* Teardown interrupt first */ 1265 if (nic->msix_entries[irq].handle != NULL) { 1266 err = bus_teardown_intr(nic->dev, 1267 nic->msix_entries[irq].irq_res, 1268 nic->msix_entries[irq].handle); 1269 KASSERT(err == 0, 1270 ("ERROR: Unable to teardown interrupt %d", irq)); 1271 nic->msix_entries[irq].handle = NULL; 1272 } 1273 1274 bus_release_resource(nic->dev, SYS_RES_IRQ, 1275 rman_get_rid(res), nic->msix_entries[irq].irq_res); 1276 nic->msix_entries[irq].irq_res = NULL; 1277 } 1278 /* Disable MSI-X */ 1279 nicvf_disable_msix(nic); 1280 } 1281 1282 /* 1283 * Initialize MSIX vectors and register MISC interrupt. 1284 * Send READY message to PF to check if its alive 1285 */ 1286 static int 1287 nicvf_allocate_misc_interrupt(struct nicvf *nic) 1288 { 1289 struct resource *res; 1290 int irq, rid; 1291 int ret = 0; 1292 1293 /* Return if mailbox interrupt is already registered */ 1294 if (nic->msix_enabled) 1295 return (0); 1296 1297 /* Enable MSI-X */ 1298 if (nicvf_enable_msix(nic) != 0) 1299 return (ENXIO); 1300 1301 irq = NICVF_INTR_ID_MISC; 1302 rid = irq + 1; 1303 nic->msix_entries[irq].irq_res = bus_alloc_resource_any(nic->dev, 1304 SYS_RES_IRQ, &rid, (RF_SHAREABLE | RF_ACTIVE)); 1305 if (nic->msix_entries[irq].irq_res == NULL) { 1306 device_printf(nic->dev, 1307 "Could not allocate Mbox interrupt for VF%d\n", 1308 device_get_unit(nic->dev)); 1309 return (ENXIO); 1310 } 1311 1312 ret = bus_setup_intr(nic->dev, nic->msix_entries[irq].irq_res, 1313 (INTR_MPSAFE | INTR_TYPE_MISC), NULL, nicvf_misc_intr_handler, nic, 1314 &nic->msix_entries[irq].handle); 1315 if (ret != 0) { 1316 res = nic->msix_entries[irq].irq_res; 1317 bus_release_resource(nic->dev, SYS_RES_IRQ, 1318 rman_get_rid(res), res); 1319 nic->msix_entries[irq].irq_res = NULL; 1320 return (ret); 1321 } 1322 1323 return (0); 1324 } 1325 1326 static int 1327 nicvf_enable_misc_interrupt(struct nicvf *nic) 1328 { 1329 1330 /* Enable mailbox interrupt */ 1331 nicvf_enable_intr(nic, NICVF_INTR_MBOX, 0); 1332 1333 /* Check if VF is able to communicate with PF */ 1334 if (!nicvf_check_pf_ready(nic)) { 1335 nicvf_disable_intr(nic, NICVF_INTR_MBOX, 0); 1336 return (ENXIO); 1337 } 1338 1339 return (0); 1340 } 1341 1342 static void 1343 nicvf_release_net_interrupts(struct nicvf *nic) 1344 { 1345 struct resource *res; 1346 int irq; 1347 int err; 1348 1349 for_each_cq_irq(irq) { 1350 res = nic->msix_entries[irq].irq_res; 1351 if (res == NULL) 1352 continue; 1353 /* Teardown active interrupts first */ 1354 if (nic->msix_entries[irq].handle != NULL) { 1355 err = bus_teardown_intr(nic->dev, 1356 nic->msix_entries[irq].irq_res, 1357 nic->msix_entries[irq].handle); 1358 KASSERT(err == 0, 1359 ("ERROR: Unable to teardown CQ interrupt %d", 1360 (irq - NICVF_INTR_ID_CQ))); 1361 if (err != 0) 1362 continue; 1363 } 1364 1365 /* Release resource */ 1366 bus_release_resource(nic->dev, SYS_RES_IRQ, rman_get_rid(res), 1367 res); 1368 nic->msix_entries[irq].irq_res = NULL; 1369 } 1370 1371 for_each_rbdr_irq(irq) { 1372 res = nic->msix_entries[irq].irq_res; 1373 if (res == NULL) 1374 continue; 1375 /* Teardown active interrupts first */ 1376 if (nic->msix_entries[irq].handle != NULL) { 1377 err = bus_teardown_intr(nic->dev, 1378 nic->msix_entries[irq].irq_res, 1379 nic->msix_entries[irq].handle); 1380 KASSERT(err == 0, 1381 ("ERROR: Unable to teardown RDBR interrupt %d", 1382 (irq - NICVF_INTR_ID_RBDR))); 1383 if (err != 0) 1384 continue; 1385 } 1386 1387 /* Release resource */ 1388 bus_release_resource(nic->dev, SYS_RES_IRQ, rman_get_rid(res), 1389 res); 1390 nic->msix_entries[irq].irq_res = NULL; 1391 } 1392 1393 irq = NICVF_INTR_ID_QS_ERR; 1394 res = nic->msix_entries[irq].irq_res; 1395 if (res != NULL) { 1396 /* Teardown active interrupts first */ 1397 if (nic->msix_entries[irq].handle != NULL) { 1398 err = bus_teardown_intr(nic->dev, 1399 nic->msix_entries[irq].irq_res, 1400 nic->msix_entries[irq].handle); 1401 KASSERT(err == 0, 1402 ("ERROR: Unable to teardown QS Error interrupt %d", 1403 irq)); 1404 if (err != 0) 1405 return; 1406 } 1407 1408 /* Release resource */ 1409 bus_release_resource(nic->dev, SYS_RES_IRQ, rman_get_rid(res), 1410 res); 1411 nic->msix_entries[irq].irq_res = NULL; 1412 } 1413 } 1414 1415 static int 1416 nicvf_allocate_net_interrupts(struct nicvf *nic) 1417 { 1418 u_int cpuid; 1419 int irq, rid; 1420 int qidx; 1421 int ret = 0; 1422 1423 /* MSI-X must be configured by now */ 1424 if (!nic->msix_enabled) { 1425 device_printf(nic->dev, "Cannot alloacte queue interrups. " 1426 "MSI-X interrupts disabled.\n"); 1427 return (ENXIO); 1428 } 1429 1430 /* Register CQ interrupts */ 1431 for_each_cq_irq(irq) { 1432 if (irq >= (NICVF_INTR_ID_CQ + nic->qs->cq_cnt)) 1433 break; 1434 1435 qidx = irq - NICVF_INTR_ID_CQ; 1436 rid = irq + 1; 1437 nic->msix_entries[irq].irq_res = bus_alloc_resource_any(nic->dev, 1438 SYS_RES_IRQ, &rid, (RF_SHAREABLE | RF_ACTIVE)); 1439 if (nic->msix_entries[irq].irq_res == NULL) { 1440 device_printf(nic->dev, 1441 "Could not allocate CQ interrupt %d for VF%d\n", 1442 (irq - NICVF_INTR_ID_CQ), device_get_unit(nic->dev)); 1443 ret = ENXIO; 1444 goto error; 1445 } 1446 ret = bus_setup_intr(nic->dev, nic->msix_entries[irq].irq_res, 1447 (INTR_MPSAFE | INTR_TYPE_NET), nicvf_intr_handler, 1448 NULL, &nic->qs->cq[qidx], &nic->msix_entries[irq].handle); 1449 if (ret != 0) { 1450 device_printf(nic->dev, 1451 "Could not setup CQ interrupt %d for VF%d\n", 1452 (irq - NICVF_INTR_ID_CQ), device_get_unit(nic->dev)); 1453 goto error; 1454 } 1455 cpuid = (device_get_unit(nic->dev) * CMP_QUEUE_CNT) + qidx; 1456 cpuid %= mp_ncpus; 1457 /* 1458 * Save CPU ID for later use when system-wide RSS is enabled. 1459 * It will be used to pit the CQ task to the same CPU that got 1460 * interrupted. 1461 */ 1462 nic->qs->cq[qidx].cmp_cpuid = cpuid; 1463 if (bootverbose) { 1464 device_printf(nic->dev, "bind CQ%d IRQ to CPU%d\n", 1465 qidx, cpuid); 1466 } 1467 /* Bind interrupts to the given CPU */ 1468 bus_bind_intr(nic->dev, nic->msix_entries[irq].irq_res, cpuid); 1469 } 1470 1471 /* Register RBDR interrupt */ 1472 for_each_rbdr_irq(irq) { 1473 if (irq >= (NICVF_INTR_ID_RBDR + nic->qs->rbdr_cnt)) 1474 break; 1475 1476 rid = irq + 1; 1477 nic->msix_entries[irq].irq_res = bus_alloc_resource_any(nic->dev, 1478 SYS_RES_IRQ, &rid, (RF_SHAREABLE | RF_ACTIVE)); 1479 if (nic->msix_entries[irq].irq_res == NULL) { 1480 device_printf(nic->dev, 1481 "Could not allocate RBDR interrupt %d for VF%d\n", 1482 (irq - NICVF_INTR_ID_RBDR), 1483 device_get_unit(nic->dev)); 1484 ret = ENXIO; 1485 goto error; 1486 } 1487 ret = bus_setup_intr(nic->dev, nic->msix_entries[irq].irq_res, 1488 (INTR_MPSAFE | INTR_TYPE_NET), NULL, 1489 nicvf_rbdr_intr_handler, nic, 1490 &nic->msix_entries[irq].handle); 1491 if (ret != 0) { 1492 device_printf(nic->dev, 1493 "Could not setup RBDR interrupt %d for VF%d\n", 1494 (irq - NICVF_INTR_ID_RBDR), 1495 device_get_unit(nic->dev)); 1496 goto error; 1497 } 1498 } 1499 1500 /* Register QS error interrupt */ 1501 irq = NICVF_INTR_ID_QS_ERR; 1502 rid = irq + 1; 1503 nic->msix_entries[irq].irq_res = bus_alloc_resource_any(nic->dev, 1504 SYS_RES_IRQ, &rid, (RF_SHAREABLE | RF_ACTIVE)); 1505 if (nic->msix_entries[irq].irq_res == NULL) { 1506 device_printf(nic->dev, 1507 "Could not allocate QS Error interrupt for VF%d\n", 1508 device_get_unit(nic->dev)); 1509 ret = ENXIO; 1510 goto error; 1511 } 1512 ret = bus_setup_intr(nic->dev, nic->msix_entries[irq].irq_res, 1513 (INTR_MPSAFE | INTR_TYPE_NET), NULL, nicvf_qs_err_intr_handler, 1514 nic, &nic->msix_entries[irq].handle); 1515 if (ret != 0) { 1516 device_printf(nic->dev, 1517 "Could not setup QS Error interrupt for VF%d\n", 1518 device_get_unit(nic->dev)); 1519 goto error; 1520 } 1521 1522 return (0); 1523 error: 1524 nicvf_release_net_interrupts(nic); 1525 return (ret); 1526 } 1527 1528 static int 1529 nicvf_stop_locked(struct nicvf *nic) 1530 { 1531 struct ifnet *ifp; 1532 int qidx; 1533 struct queue_set *qs = nic->qs; 1534 union nic_mbx mbx = {}; 1535 1536 NICVF_CORE_LOCK_ASSERT(nic); 1537 /* Stop callout. Can block here since holding SX lock */ 1538 callout_drain(&nic->stats_callout); 1539 1540 ifp = nic->ifp; 1541 1542 mbx.msg.msg = NIC_MBOX_MSG_SHUTDOWN; 1543 nicvf_send_msg_to_pf(nic, &mbx); 1544 1545 /* Disable RBDR & QS error interrupts */ 1546 for (qidx = 0; qidx < qs->rbdr_cnt; qidx++) { 1547 nicvf_disable_intr(nic, NICVF_INTR_RBDR, qidx); 1548 nicvf_clear_intr(nic, NICVF_INTR_RBDR, qidx); 1549 } 1550 nicvf_disable_intr(nic, NICVF_INTR_QS_ERR, 0); 1551 nicvf_clear_intr(nic, NICVF_INTR_QS_ERR, 0); 1552 1553 /* Deactivate network interface */ 1554 if_setdrvflagbits(ifp, IFF_DRV_OACTIVE, IFF_DRV_RUNNING); 1555 1556 /* Free resources */ 1557 nicvf_config_data_transfer(nic, FALSE); 1558 1559 /* Disable HW Qset */ 1560 nicvf_qset_config(nic, FALSE); 1561 1562 /* disable mailbox interrupt */ 1563 nicvf_disable_intr(nic, NICVF_INTR_MBOX, 0); 1564 1565 return (0); 1566 } 1567 1568 static void 1569 nicvf_update_stats(struct nicvf *nic) 1570 { 1571 int qidx; 1572 struct nicvf_hw_stats *stats = &nic->hw_stats; 1573 struct nicvf_drv_stats *drv_stats = &nic->drv_stats; 1574 struct queue_set *qs = nic->qs; 1575 1576 #define GET_RX_STATS(reg) \ 1577 nicvf_reg_read(nic, NIC_VNIC_RX_STAT_0_13 | ((reg) << 3)) 1578 #define GET_TX_STATS(reg) \ 1579 nicvf_reg_read(nic, NIC_VNIC_TX_STAT_0_4 | ((reg) << 3)) 1580 1581 stats->rx_bytes = GET_RX_STATS(RX_OCTS); 1582 stats->rx_ucast_frames = GET_RX_STATS(RX_UCAST); 1583 stats->rx_bcast_frames = GET_RX_STATS(RX_BCAST); 1584 stats->rx_mcast_frames = GET_RX_STATS(RX_MCAST); 1585 stats->rx_fcs_errors = GET_RX_STATS(RX_FCS); 1586 stats->rx_l2_errors = GET_RX_STATS(RX_L2ERR); 1587 stats->rx_drop_red = GET_RX_STATS(RX_RED); 1588 stats->rx_drop_red_bytes = GET_RX_STATS(RX_RED_OCTS); 1589 stats->rx_drop_overrun = GET_RX_STATS(RX_ORUN); 1590 stats->rx_drop_overrun_bytes = GET_RX_STATS(RX_ORUN_OCTS); 1591 stats->rx_drop_bcast = GET_RX_STATS(RX_DRP_BCAST); 1592 stats->rx_drop_mcast = GET_RX_STATS(RX_DRP_MCAST); 1593 stats->rx_drop_l3_bcast = GET_RX_STATS(RX_DRP_L3BCAST); 1594 stats->rx_drop_l3_mcast = GET_RX_STATS(RX_DRP_L3MCAST); 1595 1596 stats->tx_bytes_ok = GET_TX_STATS(TX_OCTS); 1597 stats->tx_ucast_frames_ok = GET_TX_STATS(TX_UCAST); 1598 stats->tx_bcast_frames_ok = GET_TX_STATS(TX_BCAST); 1599 stats->tx_mcast_frames_ok = GET_TX_STATS(TX_MCAST); 1600 stats->tx_drops = GET_TX_STATS(TX_DROP); 1601 1602 drv_stats->tx_frames_ok = stats->tx_ucast_frames_ok + 1603 stats->tx_bcast_frames_ok + stats->tx_mcast_frames_ok; 1604 drv_stats->rx_drops = stats->rx_drop_red + stats->rx_drop_overrun; 1605 drv_stats->tx_drops = stats->tx_drops; 1606 1607 /* Update RQ and SQ stats */ 1608 for (qidx = 0; qidx < qs->rq_cnt; qidx++) 1609 nicvf_update_rq_stats(nic, qidx); 1610 for (qidx = 0; qidx < qs->sq_cnt; qidx++) 1611 nicvf_update_sq_stats(nic, qidx); 1612 } 1613 1614 static void 1615 nicvf_tick_stats(void *arg) 1616 { 1617 struct nicvf *nic; 1618 1619 nic = (struct nicvf *)arg; 1620 1621 /* Read the statistics */ 1622 nicvf_update_stats(nic); 1623 1624 callout_reset(&nic->stats_callout, hz, nicvf_tick_stats, nic); 1625 } 1626