1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (c) 2015-2020 Amazon.com, Inc. or its affiliates. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include "opt_rss.h" 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/bus.h> 38 #include <sys/endian.h> 39 #include <sys/kernel.h> 40 #include <sys/kthread.h> 41 #include <sys/malloc.h> 42 #include <sys/mbuf.h> 43 #include <sys/module.h> 44 #include <sys/rman.h> 45 #include <sys/smp.h> 46 #include <sys/socket.h> 47 #include <sys/sockio.h> 48 #include <sys/sysctl.h> 49 #include <sys/taskqueue.h> 50 #include <sys/time.h> 51 #include <sys/eventhandler.h> 52 53 #include <machine/bus.h> 54 #include <machine/resource.h> 55 #include <machine/in_cksum.h> 56 57 #include <net/bpf.h> 58 #include <net/ethernet.h> 59 #include <net/if.h> 60 #include <net/if_var.h> 61 #include <net/if_arp.h> 62 #include <net/if_dl.h> 63 #include <net/if_media.h> 64 #include <net/if_types.h> 65 #include <net/if_vlan_var.h> 66 #ifdef RSS 67 #include <net/rss_config.h> 68 #endif 69 70 #include <netinet/in_systm.h> 71 #include <netinet/in.h> 72 #include <netinet/if_ether.h> 73 #include <netinet/ip.h> 74 #include <netinet/ip6.h> 75 #include <netinet/tcp.h> 76 #include <netinet/udp.h> 77 78 #include <dev/pci/pcivar.h> 79 #include <dev/pci/pcireg.h> 80 81 #include <vm/vm.h> 82 #include <vm/pmap.h> 83 84 #include "ena_datapath.h" 85 #include "ena.h" 86 #include "ena_sysctl.h" 87 88 #ifdef DEV_NETMAP 89 #include "ena_netmap.h" 90 #endif /* DEV_NETMAP */ 91 92 /********************************************************* 93 * Function prototypes 94 *********************************************************/ 95 static int ena_probe(device_t); 96 static void ena_intr_msix_mgmnt(void *); 97 static void ena_free_pci_resources(struct ena_adapter *); 98 static int ena_change_mtu(if_t, int); 99 static inline void ena_alloc_counters(counter_u64_t *, int); 100 static inline void ena_free_counters(counter_u64_t *, int); 101 static inline void ena_reset_counters(counter_u64_t *, int); 102 static void ena_init_io_rings_common(struct ena_adapter *, 103 struct ena_ring *, uint16_t); 104 static void ena_init_io_rings_basic(struct ena_adapter *); 105 static void ena_init_io_rings_advanced(struct ena_adapter *); 106 static void ena_init_io_rings(struct ena_adapter *); 107 static void ena_free_io_ring_resources(struct ena_adapter *, unsigned int); 108 static void ena_free_all_io_rings_resources(struct ena_adapter *); 109 static int ena_setup_tx_dma_tag(struct ena_adapter *); 110 static int ena_free_tx_dma_tag(struct ena_adapter *); 111 static int ena_setup_rx_dma_tag(struct ena_adapter *); 112 static int ena_free_rx_dma_tag(struct ena_adapter *); 113 static void ena_release_all_tx_dmamap(struct ena_ring *); 114 static int ena_setup_tx_resources(struct ena_adapter *, int); 115 static void ena_free_tx_resources(struct ena_adapter *, int); 116 static int ena_setup_all_tx_resources(struct ena_adapter *); 117 static void ena_free_all_tx_resources(struct ena_adapter *); 118 static int ena_setup_rx_resources(struct ena_adapter *, unsigned int); 119 static void ena_free_rx_resources(struct ena_adapter *, unsigned int); 120 static int ena_setup_all_rx_resources(struct ena_adapter *); 121 static void ena_free_all_rx_resources(struct ena_adapter *); 122 static inline int ena_alloc_rx_mbuf(struct ena_adapter *, struct ena_ring *, 123 struct ena_rx_buffer *); 124 static void ena_free_rx_mbuf(struct ena_adapter *, struct ena_ring *, 125 struct ena_rx_buffer *); 126 static void ena_free_rx_bufs(struct ena_adapter *, unsigned int); 127 static void ena_refill_all_rx_bufs(struct ena_adapter *); 128 static void ena_free_all_rx_bufs(struct ena_adapter *); 129 static void ena_free_tx_bufs(struct ena_adapter *, unsigned int); 130 static void ena_free_all_tx_bufs(struct ena_adapter *); 131 static void ena_destroy_all_tx_queues(struct ena_adapter *); 132 static void ena_destroy_all_rx_queues(struct ena_adapter *); 133 static void ena_destroy_all_io_queues(struct ena_adapter *); 134 static int ena_create_io_queues(struct ena_adapter *); 135 static int ena_handle_msix(void *); 136 static int ena_enable_msix(struct ena_adapter *); 137 static void ena_setup_mgmnt_intr(struct ena_adapter *); 138 static int ena_setup_io_intr(struct ena_adapter *); 139 static int ena_request_mgmnt_irq(struct ena_adapter *); 140 static int ena_request_io_irq(struct ena_adapter *); 141 static void ena_free_mgmnt_irq(struct ena_adapter *); 142 static void ena_free_io_irq(struct ena_adapter *); 143 static void ena_free_irqs(struct ena_adapter*); 144 static void ena_disable_msix(struct ena_adapter *); 145 static void ena_unmask_all_io_irqs(struct ena_adapter *); 146 static int ena_rss_configure(struct ena_adapter *); 147 static int ena_up_complete(struct ena_adapter *); 148 static uint64_t ena_get_counter(if_t, ift_counter); 149 static int ena_media_change(if_t); 150 static void ena_media_status(if_t, struct ifmediareq *); 151 static void ena_init(void *); 152 static int ena_ioctl(if_t, u_long, caddr_t); 153 static int ena_get_dev_offloads(struct ena_com_dev_get_features_ctx *); 154 static void ena_update_host_info(struct ena_admin_host_info *, if_t); 155 static void ena_update_hwassist(struct ena_adapter *); 156 static int ena_setup_ifnet(device_t, struct ena_adapter *, 157 struct ena_com_dev_get_features_ctx *); 158 static int ena_enable_wc(struct resource *); 159 static int ena_set_queues_placement_policy(device_t, struct ena_com_dev *, 160 struct ena_admin_feature_llq_desc *, struct ena_llq_configurations *); 161 static uint32_t ena_calc_max_io_queue_num(device_t, struct ena_com_dev *, 162 struct ena_com_dev_get_features_ctx *); 163 static int ena_calc_io_queue_size(struct ena_calc_queue_size_ctx *); 164 static int ena_rss_init_default(struct ena_adapter *); 165 static void ena_rss_init_default_deferred(void *); 166 static void ena_config_host_info(struct ena_com_dev *, device_t); 167 static int ena_attach(device_t); 168 static int ena_detach(device_t); 169 static int ena_device_init(struct ena_adapter *, device_t, 170 struct ena_com_dev_get_features_ctx *, int *); 171 static int ena_enable_msix_and_set_admin_interrupts(struct ena_adapter *); 172 static void ena_update_on_link_change(void *, struct ena_admin_aenq_entry *); 173 static void unimplemented_aenq_handler(void *, 174 struct ena_admin_aenq_entry *); 175 static void ena_timer_service(void *); 176 177 static char ena_version[] = DEVICE_NAME DRV_MODULE_NAME " v" DRV_MODULE_VERSION; 178 179 static ena_vendor_info_t ena_vendor_info_array[] = { 180 { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_PF, 0}, 181 { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_LLQ_PF, 0}, 182 { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_VF, 0}, 183 { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_LLQ_VF, 0}, 184 /* Last entry */ 185 { 0, 0, 0 } 186 }; 187 188 /* 189 * Contains pointers to event handlers, e.g. link state chage. 190 */ 191 static struct ena_aenq_handlers aenq_handlers; 192 193 void 194 ena_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nseg, int error) 195 { 196 if (error != 0) 197 return; 198 *(bus_addr_t *) arg = segs[0].ds_addr; 199 } 200 201 int 202 ena_dma_alloc(device_t dmadev, bus_size_t size, 203 ena_mem_handle_t *dma , int mapflags) 204 { 205 struct ena_adapter* adapter = device_get_softc(dmadev); 206 uint32_t maxsize; 207 uint64_t dma_space_addr; 208 int error; 209 210 maxsize = ((size - 1) / PAGE_SIZE + 1) * PAGE_SIZE; 211 212 dma_space_addr = ENA_DMA_BIT_MASK(adapter->dma_width); 213 if (unlikely(dma_space_addr == 0)) 214 dma_space_addr = BUS_SPACE_MAXADDR; 215 216 error = bus_dma_tag_create(bus_get_dma_tag(dmadev), /* parent */ 217 8, 0, /* alignment, bounds */ 218 dma_space_addr, /* lowaddr of exclusion window */ 219 BUS_SPACE_MAXADDR,/* highaddr of exclusion window */ 220 NULL, NULL, /* filter, filterarg */ 221 maxsize, /* maxsize */ 222 1, /* nsegments */ 223 maxsize, /* maxsegsize */ 224 BUS_DMA_ALLOCNOW, /* flags */ 225 NULL, /* lockfunc */ 226 NULL, /* lockarg */ 227 &dma->tag); 228 if (unlikely(error != 0)) { 229 ena_trace(ENA_ALERT, "bus_dma_tag_create failed: %d\n", error); 230 goto fail_tag; 231 } 232 233 error = bus_dmamem_alloc(dma->tag, (void**) &dma->vaddr, 234 BUS_DMA_COHERENT | BUS_DMA_ZERO, &dma->map); 235 if (unlikely(error != 0)) { 236 ena_trace(ENA_ALERT, "bus_dmamem_alloc(%ju) failed: %d\n", 237 (uintmax_t)size, error); 238 goto fail_map_create; 239 } 240 241 dma->paddr = 0; 242 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, 243 size, ena_dmamap_callback, &dma->paddr, mapflags); 244 if (unlikely((error != 0) || (dma->paddr == 0))) { 245 ena_trace(ENA_ALERT, ": bus_dmamap_load failed: %d\n", error); 246 goto fail_map_load; 247 } 248 249 bus_dmamap_sync(dma->tag, dma->map, 250 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 251 252 return (0); 253 254 fail_map_load: 255 bus_dmamem_free(dma->tag, dma->vaddr, dma->map); 256 fail_map_create: 257 bus_dma_tag_destroy(dma->tag); 258 fail_tag: 259 dma->tag = NULL; 260 dma->vaddr = NULL; 261 dma->paddr = 0; 262 263 return (error); 264 } 265 266 /* 267 * This function should generate unique key for the whole driver. 268 * If the key was already genereated in the previous call (for example 269 * for another adapter), then it should be returned instead. 270 */ 271 void 272 ena_rss_key_fill(void *key, size_t size) 273 { 274 static bool key_generated; 275 static uint8_t default_key[ENA_HASH_KEY_SIZE]; 276 277 KASSERT(size <= ENA_HASH_KEY_SIZE, ("Requested more bytes than ENA RSS key can hold")); 278 279 if (!key_generated) { 280 arc4random_buf(default_key, ENA_HASH_KEY_SIZE); 281 key_generated = true; 282 } 283 284 memcpy(key, default_key, size); 285 } 286 287 static void 288 ena_free_pci_resources(struct ena_adapter *adapter) 289 { 290 device_t pdev = adapter->pdev; 291 292 if (adapter->memory != NULL) { 293 bus_release_resource(pdev, SYS_RES_MEMORY, 294 PCIR_BAR(ENA_MEM_BAR), adapter->memory); 295 } 296 297 if (adapter->registers != NULL) { 298 bus_release_resource(pdev, SYS_RES_MEMORY, 299 PCIR_BAR(ENA_REG_BAR), adapter->registers); 300 } 301 } 302 303 static int 304 ena_probe(device_t dev) 305 { 306 ena_vendor_info_t *ent; 307 char adapter_name[60]; 308 uint16_t pci_vendor_id = 0; 309 uint16_t pci_device_id = 0; 310 311 pci_vendor_id = pci_get_vendor(dev); 312 pci_device_id = pci_get_device(dev); 313 314 ent = ena_vendor_info_array; 315 while (ent->vendor_id != 0) { 316 if ((pci_vendor_id == ent->vendor_id) && 317 (pci_device_id == ent->device_id)) { 318 ena_trace(ENA_DBG, "vendor=%x device=%x\n", 319 pci_vendor_id, pci_device_id); 320 321 sprintf(adapter_name, DEVICE_DESC); 322 device_set_desc_copy(dev, adapter_name); 323 return (BUS_PROBE_DEFAULT); 324 } 325 326 ent++; 327 328 } 329 330 return (ENXIO); 331 } 332 333 static int 334 ena_change_mtu(if_t ifp, int new_mtu) 335 { 336 struct ena_adapter *adapter = if_getsoftc(ifp); 337 int rc; 338 339 if ((new_mtu > adapter->max_mtu) || (new_mtu < ENA_MIN_MTU)) { 340 device_printf(adapter->pdev, "Invalid MTU setting. " 341 "new_mtu: %d max mtu: %d min mtu: %d\n", 342 new_mtu, adapter->max_mtu, ENA_MIN_MTU); 343 return (EINVAL); 344 } 345 346 rc = ena_com_set_dev_mtu(adapter->ena_dev, new_mtu); 347 if (likely(rc == 0)) { 348 ena_trace(ENA_DBG, "set MTU to %d\n", new_mtu); 349 if_setmtu(ifp, new_mtu); 350 } else { 351 device_printf(adapter->pdev, "Failed to set MTU to %d\n", 352 new_mtu); 353 } 354 355 return (rc); 356 } 357 358 static inline void 359 ena_alloc_counters(counter_u64_t *begin, int size) 360 { 361 counter_u64_t *end = (counter_u64_t *)((char *)begin + size); 362 363 for (; begin < end; ++begin) 364 *begin = counter_u64_alloc(M_WAITOK); 365 } 366 367 static inline void 368 ena_free_counters(counter_u64_t *begin, int size) 369 { 370 counter_u64_t *end = (counter_u64_t *)((char *)begin + size); 371 372 for (; begin < end; ++begin) 373 counter_u64_free(*begin); 374 } 375 376 static inline void 377 ena_reset_counters(counter_u64_t *begin, int size) 378 { 379 counter_u64_t *end = (counter_u64_t *)((char *)begin + size); 380 381 for (; begin < end; ++begin) 382 counter_u64_zero(*begin); 383 } 384 385 static void 386 ena_init_io_rings_common(struct ena_adapter *adapter, struct ena_ring *ring, 387 uint16_t qid) 388 { 389 390 ring->qid = qid; 391 ring->adapter = adapter; 392 ring->ena_dev = adapter->ena_dev; 393 ring->first_interrupt = false; 394 ring->no_interrupt_event_cnt = 0; 395 } 396 397 static void 398 ena_init_io_rings_basic(struct ena_adapter *adapter) 399 { 400 struct ena_com_dev *ena_dev; 401 struct ena_ring *txr, *rxr; 402 struct ena_que *que; 403 int i; 404 405 ena_dev = adapter->ena_dev; 406 407 for (i = 0; i < adapter->num_io_queues; i++) { 408 txr = &adapter->tx_ring[i]; 409 rxr = &adapter->rx_ring[i]; 410 411 /* TX/RX common ring state */ 412 ena_init_io_rings_common(adapter, txr, i); 413 ena_init_io_rings_common(adapter, rxr, i); 414 415 /* TX specific ring state */ 416 txr->tx_max_header_size = ena_dev->tx_max_header_size; 417 txr->tx_mem_queue_type = ena_dev->tx_mem_queue_type; 418 419 que = &adapter->que[i]; 420 que->adapter = adapter; 421 que->id = i; 422 que->tx_ring = txr; 423 que->rx_ring = rxr; 424 425 txr->que = que; 426 rxr->que = que; 427 428 rxr->empty_rx_queue = 0; 429 rxr->rx_mbuf_sz = ena_mbuf_sz; 430 } 431 } 432 433 static void 434 ena_init_io_rings_advanced(struct ena_adapter *adapter) 435 { 436 struct ena_ring *txr, *rxr; 437 int i; 438 439 for (i = 0; i < adapter->num_io_queues; i++) { 440 txr = &adapter->tx_ring[i]; 441 rxr = &adapter->rx_ring[i]; 442 443 /* Allocate a buf ring */ 444 txr->buf_ring_size = adapter->buf_ring_size; 445 txr->br = buf_ring_alloc(txr->buf_ring_size, M_DEVBUF, 446 M_WAITOK, &txr->ring_mtx); 447 448 /* Allocate Tx statistics. */ 449 ena_alloc_counters((counter_u64_t *)&txr->tx_stats, 450 sizeof(txr->tx_stats)); 451 452 /* Allocate Rx statistics. */ 453 ena_alloc_counters((counter_u64_t *)&rxr->rx_stats, 454 sizeof(rxr->rx_stats)); 455 456 /* Initialize locks */ 457 snprintf(txr->mtx_name, nitems(txr->mtx_name), "%s:tx(%d)", 458 device_get_nameunit(adapter->pdev), i); 459 snprintf(rxr->mtx_name, nitems(rxr->mtx_name), "%s:rx(%d)", 460 device_get_nameunit(adapter->pdev), i); 461 462 mtx_init(&txr->ring_mtx, txr->mtx_name, NULL, MTX_DEF); 463 } 464 } 465 466 static void 467 ena_init_io_rings(struct ena_adapter *adapter) 468 { 469 /* 470 * IO rings initialization can be divided into the 2 steps: 471 * 1. Initialize variables and fields with initial values and copy 472 * them from adapter/ena_dev (basic) 473 * 2. Allocate mutex, counters and buf_ring (advanced) 474 */ 475 ena_init_io_rings_basic(adapter); 476 ena_init_io_rings_advanced(adapter); 477 } 478 479 static void 480 ena_free_io_ring_resources(struct ena_adapter *adapter, unsigned int qid) 481 { 482 struct ena_ring *txr = &adapter->tx_ring[qid]; 483 struct ena_ring *rxr = &adapter->rx_ring[qid]; 484 485 ena_free_counters((counter_u64_t *)&txr->tx_stats, 486 sizeof(txr->tx_stats)); 487 ena_free_counters((counter_u64_t *)&rxr->rx_stats, 488 sizeof(rxr->rx_stats)); 489 490 ENA_RING_MTX_LOCK(txr); 491 drbr_free(txr->br, M_DEVBUF); 492 ENA_RING_MTX_UNLOCK(txr); 493 494 mtx_destroy(&txr->ring_mtx); 495 } 496 497 static void 498 ena_free_all_io_rings_resources(struct ena_adapter *adapter) 499 { 500 int i; 501 502 for (i = 0; i < adapter->num_io_queues; i++) 503 ena_free_io_ring_resources(adapter, i); 504 505 } 506 507 static int 508 ena_setup_tx_dma_tag(struct ena_adapter *adapter) 509 { 510 int ret; 511 512 /* Create DMA tag for Tx buffers */ 513 ret = bus_dma_tag_create(bus_get_dma_tag(adapter->pdev), 514 1, 0, /* alignment, bounds */ 515 ENA_DMA_BIT_MASK(adapter->dma_width), /* lowaddr of excl window */ 516 BUS_SPACE_MAXADDR, /* highaddr of excl window */ 517 NULL, NULL, /* filter, filterarg */ 518 ENA_TSO_MAXSIZE, /* maxsize */ 519 adapter->max_tx_sgl_size - 1, /* nsegments */ 520 ENA_TSO_MAXSIZE, /* maxsegsize */ 521 0, /* flags */ 522 NULL, /* lockfunc */ 523 NULL, /* lockfuncarg */ 524 &adapter->tx_buf_tag); 525 526 return (ret); 527 } 528 529 static int 530 ena_free_tx_dma_tag(struct ena_adapter *adapter) 531 { 532 int ret; 533 534 ret = bus_dma_tag_destroy(adapter->tx_buf_tag); 535 536 if (likely(ret == 0)) 537 adapter->tx_buf_tag = NULL; 538 539 return (ret); 540 } 541 542 static int 543 ena_setup_rx_dma_tag(struct ena_adapter *adapter) 544 { 545 int ret; 546 547 /* Create DMA tag for Rx buffers*/ 548 ret = bus_dma_tag_create(bus_get_dma_tag(adapter->pdev), /* parent */ 549 1, 0, /* alignment, bounds */ 550 ENA_DMA_BIT_MASK(adapter->dma_width), /* lowaddr of excl window */ 551 BUS_SPACE_MAXADDR, /* highaddr of excl window */ 552 NULL, NULL, /* filter, filterarg */ 553 ena_mbuf_sz, /* maxsize */ 554 adapter->max_rx_sgl_size, /* nsegments */ 555 ena_mbuf_sz, /* maxsegsize */ 556 0, /* flags */ 557 NULL, /* lockfunc */ 558 NULL, /* lockarg */ 559 &adapter->rx_buf_tag); 560 561 return (ret); 562 } 563 564 static int 565 ena_free_rx_dma_tag(struct ena_adapter *adapter) 566 { 567 int ret; 568 569 ret = bus_dma_tag_destroy(adapter->rx_buf_tag); 570 571 if (likely(ret == 0)) 572 adapter->rx_buf_tag = NULL; 573 574 return (ret); 575 } 576 577 static void 578 ena_release_all_tx_dmamap(struct ena_ring *tx_ring) 579 { 580 struct ena_adapter *adapter = tx_ring->adapter; 581 struct ena_tx_buffer *tx_info; 582 bus_dma_tag_t tx_tag = adapter->tx_buf_tag;; 583 int i; 584 #ifdef DEV_NETMAP 585 struct ena_netmap_tx_info *nm_info; 586 int j; 587 #endif /* DEV_NETMAP */ 588 589 for (i = 0; i < tx_ring->ring_size; ++i) { 590 tx_info = &tx_ring->tx_buffer_info[i]; 591 #ifdef DEV_NETMAP 592 if (adapter->ifp->if_capenable & IFCAP_NETMAP) { 593 nm_info = &tx_info->nm_info; 594 for (j = 0; j < ENA_PKT_MAX_BUFS; ++j) { 595 if (nm_info->map_seg[j] != NULL) { 596 bus_dmamap_destroy(tx_tag, 597 nm_info->map_seg[j]); 598 nm_info->map_seg[j] = NULL; 599 } 600 } 601 } 602 #endif /* DEV_NETMAP */ 603 if (tx_info->dmamap != NULL) { 604 bus_dmamap_destroy(tx_tag, tx_info->dmamap); 605 tx_info->dmamap = NULL; 606 } 607 } 608 } 609 610 /** 611 * ena_setup_tx_resources - allocate Tx resources (Descriptors) 612 * @adapter: network interface device structure 613 * @qid: queue index 614 * 615 * Returns 0 on success, otherwise on failure. 616 **/ 617 static int 618 ena_setup_tx_resources(struct ena_adapter *adapter, int qid) 619 { 620 struct ena_que *que = &adapter->que[qid]; 621 struct ena_ring *tx_ring = que->tx_ring; 622 int size, i, err; 623 #ifdef DEV_NETMAP 624 bus_dmamap_t *map; 625 int j; 626 627 ena_netmap_reset_tx_ring(adapter, qid); 628 #endif /* DEV_NETMAP */ 629 630 size = sizeof(struct ena_tx_buffer) * tx_ring->ring_size; 631 632 tx_ring->tx_buffer_info = malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO); 633 if (unlikely(tx_ring->tx_buffer_info == NULL)) 634 return (ENOMEM); 635 636 size = sizeof(uint16_t) * tx_ring->ring_size; 637 tx_ring->free_tx_ids = malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO); 638 if (unlikely(tx_ring->free_tx_ids == NULL)) 639 goto err_buf_info_free; 640 641 size = tx_ring->tx_max_header_size; 642 tx_ring->push_buf_intermediate_buf = malloc(size, M_DEVBUF, 643 M_NOWAIT | M_ZERO); 644 if (unlikely(tx_ring->push_buf_intermediate_buf == NULL)) 645 goto err_tx_ids_free; 646 647 /* Req id stack for TX OOO completions */ 648 for (i = 0; i < tx_ring->ring_size; i++) 649 tx_ring->free_tx_ids[i] = i; 650 651 /* Reset TX statistics. */ 652 ena_reset_counters((counter_u64_t *)&tx_ring->tx_stats, 653 sizeof(tx_ring->tx_stats)); 654 655 tx_ring->next_to_use = 0; 656 tx_ring->next_to_clean = 0; 657 tx_ring->acum_pkts = 0; 658 659 /* Make sure that drbr is empty */ 660 ENA_RING_MTX_LOCK(tx_ring); 661 drbr_flush(adapter->ifp, tx_ring->br); 662 ENA_RING_MTX_UNLOCK(tx_ring); 663 664 /* ... and create the buffer DMA maps */ 665 for (i = 0; i < tx_ring->ring_size; i++) { 666 err = bus_dmamap_create(adapter->tx_buf_tag, 0, 667 &tx_ring->tx_buffer_info[i].dmamap); 668 if (unlikely(err != 0)) { 669 ena_trace(ENA_ALERT, 670 "Unable to create Tx DMA map for buffer %d\n", 671 i); 672 goto err_map_release; 673 } 674 675 #ifdef DEV_NETMAP 676 if (adapter->ifp->if_capenable & IFCAP_NETMAP) { 677 map = tx_ring->tx_buffer_info[i].nm_info.map_seg; 678 for (j = 0; j < ENA_PKT_MAX_BUFS; j++) { 679 err = bus_dmamap_create(adapter->tx_buf_tag, 0, 680 &map[j]); 681 if (unlikely(err != 0)) { 682 ena_trace(ENA_ALERT, "Unable to create " 683 "Tx DMA for buffer %d %d\n", i, j); 684 goto err_map_release; 685 } 686 } 687 } 688 #endif /* DEV_NETMAP */ 689 } 690 691 /* Allocate taskqueues */ 692 TASK_INIT(&tx_ring->enqueue_task, 0, ena_deferred_mq_start, tx_ring); 693 tx_ring->enqueue_tq = taskqueue_create_fast("ena_tx_enque", M_NOWAIT, 694 taskqueue_thread_enqueue, &tx_ring->enqueue_tq); 695 if (unlikely(tx_ring->enqueue_tq == NULL)) { 696 ena_trace(ENA_ALERT, 697 "Unable to create taskqueue for enqueue task\n"); 698 i = tx_ring->ring_size; 699 goto err_map_release; 700 } 701 702 tx_ring->running = true; 703 704 taskqueue_start_threads(&tx_ring->enqueue_tq, 1, PI_NET, 705 "%s txeq %d", device_get_nameunit(adapter->pdev), que->cpu); 706 707 return (0); 708 709 err_map_release: 710 ena_release_all_tx_dmamap(tx_ring); 711 err_tx_ids_free: 712 free(tx_ring->free_tx_ids, M_DEVBUF); 713 tx_ring->free_tx_ids = NULL; 714 err_buf_info_free: 715 free(tx_ring->tx_buffer_info, M_DEVBUF); 716 tx_ring->tx_buffer_info = NULL; 717 718 return (ENOMEM); 719 } 720 721 /** 722 * ena_free_tx_resources - Free Tx Resources per Queue 723 * @adapter: network interface device structure 724 * @qid: queue index 725 * 726 * Free all transmit software resources 727 **/ 728 static void 729 ena_free_tx_resources(struct ena_adapter *adapter, int qid) 730 { 731 struct ena_ring *tx_ring = &adapter->tx_ring[qid]; 732 #ifdef DEV_NETMAP 733 struct ena_netmap_tx_info *nm_info; 734 int j; 735 #endif /* DEV_NETMAP */ 736 737 while (taskqueue_cancel(tx_ring->enqueue_tq, &tx_ring->enqueue_task, 738 NULL)) 739 taskqueue_drain(tx_ring->enqueue_tq, &tx_ring->enqueue_task); 740 741 taskqueue_free(tx_ring->enqueue_tq); 742 743 ENA_RING_MTX_LOCK(tx_ring); 744 /* Flush buffer ring, */ 745 drbr_flush(adapter->ifp, tx_ring->br); 746 747 /* Free buffer DMA maps, */ 748 for (int i = 0; i < tx_ring->ring_size; i++) { 749 bus_dmamap_sync(adapter->tx_buf_tag, 750 tx_ring->tx_buffer_info[i].dmamap, BUS_DMASYNC_POSTWRITE); 751 bus_dmamap_unload(adapter->tx_buf_tag, 752 tx_ring->tx_buffer_info[i].dmamap); 753 bus_dmamap_destroy(adapter->tx_buf_tag, 754 tx_ring->tx_buffer_info[i].dmamap); 755 756 #ifdef DEV_NETMAP 757 if (adapter->ifp->if_capenable & IFCAP_NETMAP) { 758 nm_info = &tx_ring->tx_buffer_info[i].nm_info; 759 for (j = 0; j < ENA_PKT_MAX_BUFS; j++) { 760 if (nm_info->socket_buf_idx[j] != 0) { 761 bus_dmamap_sync(adapter->tx_buf_tag, 762 nm_info->map_seg[j], 763 BUS_DMASYNC_POSTWRITE); 764 ena_netmap_unload(adapter, 765 nm_info->map_seg[j]); 766 } 767 bus_dmamap_destroy(adapter->tx_buf_tag, 768 nm_info->map_seg[j]); 769 nm_info->socket_buf_idx[j] = 0; 770 } 771 } 772 #endif /* DEV_NETMAP */ 773 774 m_freem(tx_ring->tx_buffer_info[i].mbuf); 775 tx_ring->tx_buffer_info[i].mbuf = NULL; 776 } 777 ENA_RING_MTX_UNLOCK(tx_ring); 778 779 /* And free allocated memory. */ 780 free(tx_ring->tx_buffer_info, M_DEVBUF); 781 tx_ring->tx_buffer_info = NULL; 782 783 free(tx_ring->free_tx_ids, M_DEVBUF); 784 tx_ring->free_tx_ids = NULL; 785 786 free(tx_ring->push_buf_intermediate_buf, M_DEVBUF); 787 tx_ring->push_buf_intermediate_buf = NULL; 788 } 789 790 /** 791 * ena_setup_all_tx_resources - allocate all queues Tx resources 792 * @adapter: network interface device structure 793 * 794 * Returns 0 on success, otherwise on failure. 795 **/ 796 static int 797 ena_setup_all_tx_resources(struct ena_adapter *adapter) 798 { 799 int i, rc; 800 801 for (i = 0; i < adapter->num_io_queues; i++) { 802 rc = ena_setup_tx_resources(adapter, i); 803 if (rc != 0) { 804 device_printf(adapter->pdev, 805 "Allocation for Tx Queue %u failed\n", i); 806 goto err_setup_tx; 807 } 808 } 809 810 return (0); 811 812 err_setup_tx: 813 /* Rewind the index freeing the rings as we go */ 814 while (i--) 815 ena_free_tx_resources(adapter, i); 816 return (rc); 817 } 818 819 /** 820 * ena_free_all_tx_resources - Free Tx Resources for All Queues 821 * @adapter: network interface device structure 822 * 823 * Free all transmit software resources 824 **/ 825 static void 826 ena_free_all_tx_resources(struct ena_adapter *adapter) 827 { 828 int i; 829 830 for (i = 0; i < adapter->num_io_queues; i++) 831 ena_free_tx_resources(adapter, i); 832 } 833 834 /** 835 * ena_setup_rx_resources - allocate Rx resources (Descriptors) 836 * @adapter: network interface device structure 837 * @qid: queue index 838 * 839 * Returns 0 on success, otherwise on failure. 840 **/ 841 static int 842 ena_setup_rx_resources(struct ena_adapter *adapter, unsigned int qid) 843 { 844 struct ena_que *que = &adapter->que[qid]; 845 struct ena_ring *rx_ring = que->rx_ring; 846 int size, err, i; 847 848 size = sizeof(struct ena_rx_buffer) * rx_ring->ring_size; 849 850 #ifdef DEV_NETMAP 851 ena_netmap_reset_rx_ring(adapter, qid); 852 rx_ring->initialized = false; 853 #endif /* DEV_NETMAP */ 854 855 /* 856 * Alloc extra element so in rx path 857 * we can always prefetch rx_info + 1 858 */ 859 size += sizeof(struct ena_rx_buffer); 860 861 rx_ring->rx_buffer_info = malloc(size, M_DEVBUF, M_WAITOK | M_ZERO); 862 863 size = sizeof(uint16_t) * rx_ring->ring_size; 864 rx_ring->free_rx_ids = malloc(size, M_DEVBUF, M_WAITOK); 865 866 for (i = 0; i < rx_ring->ring_size; i++) 867 rx_ring->free_rx_ids[i] = i; 868 869 /* Reset RX statistics. */ 870 ena_reset_counters((counter_u64_t *)&rx_ring->rx_stats, 871 sizeof(rx_ring->rx_stats)); 872 873 rx_ring->next_to_clean = 0; 874 rx_ring->next_to_use = 0; 875 876 /* ... and create the buffer DMA maps */ 877 for (i = 0; i < rx_ring->ring_size; i++) { 878 err = bus_dmamap_create(adapter->rx_buf_tag, 0, 879 &(rx_ring->rx_buffer_info[i].map)); 880 if (err != 0) { 881 ena_trace(ENA_ALERT, 882 "Unable to create Rx DMA map for buffer %d\n", i); 883 goto err_buf_info_unmap; 884 } 885 } 886 887 /* Create LRO for the ring */ 888 if ((adapter->ifp->if_capenable & IFCAP_LRO) != 0) { 889 int err = tcp_lro_init(&rx_ring->lro); 890 if (err != 0) { 891 device_printf(adapter->pdev, 892 "LRO[%d] Initialization failed!\n", qid); 893 } else { 894 ena_trace(ENA_INFO, 895 "RX Soft LRO[%d] Initialized\n", qid); 896 rx_ring->lro.ifp = adapter->ifp; 897 } 898 } 899 900 return (0); 901 902 err_buf_info_unmap: 903 while (i--) { 904 bus_dmamap_destroy(adapter->rx_buf_tag, 905 rx_ring->rx_buffer_info[i].map); 906 } 907 908 free(rx_ring->free_rx_ids, M_DEVBUF); 909 rx_ring->free_rx_ids = NULL; 910 free(rx_ring->rx_buffer_info, M_DEVBUF); 911 rx_ring->rx_buffer_info = NULL; 912 return (ENOMEM); 913 } 914 915 /** 916 * ena_free_rx_resources - Free Rx Resources 917 * @adapter: network interface device structure 918 * @qid: queue index 919 * 920 * Free all receive software resources 921 **/ 922 static void 923 ena_free_rx_resources(struct ena_adapter *adapter, unsigned int qid) 924 { 925 struct ena_ring *rx_ring = &adapter->rx_ring[qid]; 926 927 /* Free buffer DMA maps, */ 928 for (int i = 0; i < rx_ring->ring_size; i++) { 929 bus_dmamap_sync(adapter->rx_buf_tag, 930 rx_ring->rx_buffer_info[i].map, BUS_DMASYNC_POSTREAD); 931 m_freem(rx_ring->rx_buffer_info[i].mbuf); 932 rx_ring->rx_buffer_info[i].mbuf = NULL; 933 bus_dmamap_unload(adapter->rx_buf_tag, 934 rx_ring->rx_buffer_info[i].map); 935 bus_dmamap_destroy(adapter->rx_buf_tag, 936 rx_ring->rx_buffer_info[i].map); 937 } 938 939 /* free LRO resources, */ 940 tcp_lro_free(&rx_ring->lro); 941 942 /* free allocated memory */ 943 free(rx_ring->rx_buffer_info, M_DEVBUF); 944 rx_ring->rx_buffer_info = NULL; 945 946 free(rx_ring->free_rx_ids, M_DEVBUF); 947 rx_ring->free_rx_ids = NULL; 948 } 949 950 /** 951 * ena_setup_all_rx_resources - allocate all queues Rx resources 952 * @adapter: network interface device structure 953 * 954 * Returns 0 on success, otherwise on failure. 955 **/ 956 static int 957 ena_setup_all_rx_resources(struct ena_adapter *adapter) 958 { 959 int i, rc = 0; 960 961 for (i = 0; i < adapter->num_io_queues; i++) { 962 rc = ena_setup_rx_resources(adapter, i); 963 if (rc != 0) { 964 device_printf(adapter->pdev, 965 "Allocation for Rx Queue %u failed\n", i); 966 goto err_setup_rx; 967 } 968 } 969 return (0); 970 971 err_setup_rx: 972 /* rewind the index freeing the rings as we go */ 973 while (i--) 974 ena_free_rx_resources(adapter, i); 975 return (rc); 976 } 977 978 /** 979 * ena_free_all_rx_resources - Free Rx resources for all queues 980 * @adapter: network interface device structure 981 * 982 * Free all receive software resources 983 **/ 984 static void 985 ena_free_all_rx_resources(struct ena_adapter *adapter) 986 { 987 int i; 988 989 for (i = 0; i < adapter->num_io_queues; i++) 990 ena_free_rx_resources(adapter, i); 991 } 992 993 static inline int 994 ena_alloc_rx_mbuf(struct ena_adapter *adapter, 995 struct ena_ring *rx_ring, struct ena_rx_buffer *rx_info) 996 { 997 struct ena_com_buf *ena_buf; 998 bus_dma_segment_t segs[1]; 999 int nsegs, error; 1000 int mlen; 1001 1002 /* if previous allocated frag is not used */ 1003 if (unlikely(rx_info->mbuf != NULL)) 1004 return (0); 1005 1006 /* Get mbuf using UMA allocator */ 1007 rx_info->mbuf = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, 1008 rx_ring->rx_mbuf_sz); 1009 1010 if (unlikely(rx_info->mbuf == NULL)) { 1011 counter_u64_add(rx_ring->rx_stats.mjum_alloc_fail, 1); 1012 rx_info->mbuf = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1013 if (unlikely(rx_info->mbuf == NULL)) { 1014 counter_u64_add(rx_ring->rx_stats.mbuf_alloc_fail, 1); 1015 return (ENOMEM); 1016 } 1017 mlen = MCLBYTES; 1018 } else { 1019 mlen = rx_ring->rx_mbuf_sz; 1020 } 1021 /* Set mbuf length*/ 1022 rx_info->mbuf->m_pkthdr.len = rx_info->mbuf->m_len = mlen; 1023 1024 /* Map packets for DMA */ 1025 ena_trace(ENA_DBG | ENA_RSC | ENA_RXPTH, 1026 "Using tag %p for buffers' DMA mapping, mbuf %p len: %d\n", 1027 adapter->rx_buf_tag,rx_info->mbuf, rx_info->mbuf->m_len); 1028 error = bus_dmamap_load_mbuf_sg(adapter->rx_buf_tag, rx_info->map, 1029 rx_info->mbuf, segs, &nsegs, BUS_DMA_NOWAIT); 1030 if (unlikely((error != 0) || (nsegs != 1))) { 1031 ena_trace(ENA_WARNING, "failed to map mbuf, error: %d, " 1032 "nsegs: %d\n", error, nsegs); 1033 counter_u64_add(rx_ring->rx_stats.dma_mapping_err, 1); 1034 goto exit; 1035 1036 } 1037 1038 bus_dmamap_sync(adapter->rx_buf_tag, rx_info->map, BUS_DMASYNC_PREREAD); 1039 1040 ena_buf = &rx_info->ena_buf; 1041 ena_buf->paddr = segs[0].ds_addr; 1042 ena_buf->len = mlen; 1043 1044 ena_trace(ENA_DBG | ENA_RSC | ENA_RXPTH, 1045 "ALLOC RX BUF: mbuf %p, rx_info %p, len %d, paddr %#jx\n", 1046 rx_info->mbuf, rx_info,ena_buf->len, (uintmax_t)ena_buf->paddr); 1047 1048 return (0); 1049 1050 exit: 1051 m_freem(rx_info->mbuf); 1052 rx_info->mbuf = NULL; 1053 return (EFAULT); 1054 } 1055 1056 static void 1057 ena_free_rx_mbuf(struct ena_adapter *adapter, struct ena_ring *rx_ring, 1058 struct ena_rx_buffer *rx_info) 1059 { 1060 1061 if (rx_info->mbuf == NULL) { 1062 ena_trace(ENA_WARNING, "Trying to free unallocated buffer\n"); 1063 return; 1064 } 1065 1066 bus_dmamap_sync(adapter->rx_buf_tag, rx_info->map, 1067 BUS_DMASYNC_POSTREAD); 1068 bus_dmamap_unload(adapter->rx_buf_tag, rx_info->map); 1069 m_freem(rx_info->mbuf); 1070 rx_info->mbuf = NULL; 1071 } 1072 1073 /** 1074 * ena_refill_rx_bufs - Refills ring with descriptors 1075 * @rx_ring: the ring which we want to feed with free descriptors 1076 * @num: number of descriptors to refill 1077 * Refills the ring with newly allocated DMA-mapped mbufs for receiving 1078 **/ 1079 int 1080 ena_refill_rx_bufs(struct ena_ring *rx_ring, uint32_t num) 1081 { 1082 struct ena_adapter *adapter = rx_ring->adapter; 1083 uint16_t next_to_use, req_id; 1084 uint32_t i; 1085 int rc; 1086 1087 ena_trace(ENA_DBG | ENA_RXPTH | ENA_RSC, "refill qid: %d\n", 1088 rx_ring->qid); 1089 1090 next_to_use = rx_ring->next_to_use; 1091 1092 for (i = 0; i < num; i++) { 1093 struct ena_rx_buffer *rx_info; 1094 1095 ena_trace(ENA_DBG | ENA_RXPTH | ENA_RSC, 1096 "RX buffer - next to use: %d\n", next_to_use); 1097 1098 req_id = rx_ring->free_rx_ids[next_to_use]; 1099 rx_info = &rx_ring->rx_buffer_info[req_id]; 1100 #ifdef DEV_NETMAP 1101 if (ena_rx_ring_in_netmap(adapter, rx_ring->qid)) 1102 rc = ena_netmap_alloc_rx_slot(adapter, rx_ring, rx_info); 1103 else 1104 #endif /* DEV_NETMAP */ 1105 rc = ena_alloc_rx_mbuf(adapter, rx_ring, rx_info); 1106 if (unlikely(rc != 0)) { 1107 ena_trace(ENA_WARNING, 1108 "failed to alloc buffer for rx queue %d\n", 1109 rx_ring->qid); 1110 break; 1111 } 1112 rc = ena_com_add_single_rx_desc(rx_ring->ena_com_io_sq, 1113 &rx_info->ena_buf, req_id); 1114 if (unlikely(rc != 0)) { 1115 ena_trace(ENA_WARNING, 1116 "failed to add buffer for rx queue %d\n", 1117 rx_ring->qid); 1118 break; 1119 } 1120 next_to_use = ENA_RX_RING_IDX_NEXT(next_to_use, 1121 rx_ring->ring_size); 1122 } 1123 1124 if (unlikely(i < num)) { 1125 counter_u64_add(rx_ring->rx_stats.refil_partial, 1); 1126 ena_trace(ENA_WARNING, 1127 "refilled rx qid %d with only %d mbufs (from %d)\n", 1128 rx_ring->qid, i, num); 1129 } 1130 1131 if (likely(i != 0)) 1132 ena_com_write_sq_doorbell(rx_ring->ena_com_io_sq); 1133 1134 rx_ring->next_to_use = next_to_use; 1135 return (i); 1136 } 1137 1138 int 1139 ena_update_buf_ring_size(struct ena_adapter *adapter, 1140 uint32_t new_buf_ring_size) 1141 { 1142 uint32_t old_buf_ring_size; 1143 int rc = 0; 1144 bool dev_was_up; 1145 1146 ENA_LOCK_LOCK(adapter); 1147 1148 old_buf_ring_size = adapter->buf_ring_size; 1149 adapter->buf_ring_size = new_buf_ring_size; 1150 1151 dev_was_up = ENA_FLAG_ISSET(ENA_FLAG_DEV_UP, adapter); 1152 ena_down(adapter); 1153 1154 /* Reconfigure buf ring for all Tx rings. */ 1155 ena_free_all_io_rings_resources(adapter); 1156 ena_init_io_rings_advanced(adapter); 1157 if (dev_was_up) { 1158 /* 1159 * If ena_up() fails, it's not because of recent buf_ring size 1160 * changes. Because of that, we just want to revert old drbr 1161 * value and trigger the reset because something else had to 1162 * go wrong. 1163 */ 1164 rc = ena_up(adapter); 1165 if (unlikely(rc != 0)) { 1166 device_printf(adapter->pdev, 1167 "Failed to configure device after setting new drbr size: %u. Reverting old value: %u and triggering the reset\n", 1168 new_buf_ring_size, old_buf_ring_size); 1169 1170 /* Revert old size and trigger the reset */ 1171 adapter->buf_ring_size = old_buf_ring_size; 1172 ena_free_all_io_rings_resources(adapter); 1173 ena_init_io_rings_advanced(adapter); 1174 1175 ENA_FLAG_SET_ATOMIC(ENA_FLAG_DEV_UP_BEFORE_RESET, 1176 adapter); 1177 ena_trigger_reset(adapter, ENA_REGS_RESET_OS_TRIGGER); 1178 1179 } 1180 } 1181 1182 ENA_LOCK_UNLOCK(adapter); 1183 1184 return (rc); 1185 } 1186 1187 int 1188 ena_update_queue_size(struct ena_adapter *adapter, uint32_t new_tx_size, 1189 uint32_t new_rx_size) 1190 { 1191 uint32_t old_tx_size, old_rx_size; 1192 int rc = 0; 1193 bool dev_was_up; 1194 1195 ENA_LOCK_LOCK(adapter); 1196 1197 old_tx_size = adapter->requested_tx_ring_size; 1198 old_rx_size = adapter->requested_rx_ring_size; 1199 adapter->requested_tx_ring_size = new_tx_size; 1200 adapter->requested_rx_ring_size = new_rx_size; 1201 1202 dev_was_up = ENA_FLAG_ISSET(ENA_FLAG_DEV_UP, adapter); 1203 ena_down(adapter); 1204 1205 /* Configure queues with new size. */ 1206 ena_init_io_rings_basic(adapter); 1207 if (dev_was_up) { 1208 rc = ena_up(adapter); 1209 if (unlikely(rc != 0)) { 1210 device_printf(adapter->pdev, 1211 "Failed to configure device with the new sizes - Tx: %u Rx: %u. Reverting old values - Tx: %u Rx: %u\n", 1212 new_tx_size, new_rx_size, old_tx_size, old_rx_size); 1213 1214 /* Revert old size. */ 1215 adapter->requested_tx_ring_size = old_tx_size; 1216 adapter->requested_rx_ring_size = old_rx_size; 1217 ena_init_io_rings_basic(adapter); 1218 1219 /* And try again. */ 1220 rc = ena_up(adapter); 1221 if (unlikely(rc != 0)) { 1222 device_printf(adapter->pdev, 1223 "Failed to revert old queue sizes. Triggering device reset.\n"); 1224 /* 1225 * If we've failed again, something had to go 1226 * wrong. After reset, the device should try to 1227 * go up 1228 */ 1229 ENA_FLAG_SET_ATOMIC( 1230 ENA_FLAG_DEV_UP_BEFORE_RESET, adapter); 1231 ena_trigger_reset(adapter, 1232 ENA_REGS_RESET_OS_TRIGGER); 1233 } 1234 } 1235 } 1236 1237 ENA_LOCK_UNLOCK(adapter); 1238 1239 return (rc); 1240 } 1241 1242 static void 1243 ena_update_io_rings(struct ena_adapter *adapter, uint32_t num) 1244 { 1245 ena_free_all_io_rings_resources(adapter); 1246 /* Force indirection table to be reinitialized */ 1247 ena_com_rss_destroy(adapter->ena_dev); 1248 1249 adapter->num_io_queues = num; 1250 ena_init_io_rings(adapter); 1251 } 1252 1253 /* Caller should sanitize new_num */ 1254 int 1255 ena_update_io_queue_nb(struct ena_adapter *adapter, uint32_t new_num) 1256 { 1257 uint32_t old_num; 1258 int rc = 0; 1259 bool dev_was_up; 1260 1261 ENA_LOCK_LOCK(adapter); 1262 1263 dev_was_up = ENA_FLAG_ISSET(ENA_FLAG_DEV_UP, adapter); 1264 old_num = adapter->num_io_queues; 1265 ena_down(adapter); 1266 1267 ena_update_io_rings(adapter, new_num); 1268 1269 if (dev_was_up) { 1270 rc = ena_up(adapter); 1271 if (unlikely(rc != 0)) { 1272 device_printf(adapter->pdev, 1273 "Failed to configure device with %u IO queues. " 1274 "Reverting to previous value: %u\n", 1275 new_num, old_num); 1276 1277 ena_update_io_rings(adapter, old_num); 1278 1279 rc = ena_up(adapter); 1280 if (unlikely(rc != 0)) { 1281 device_printf(adapter->pdev, 1282 "Failed to revert to previous setup IO " 1283 "queues. Triggering device reset.\n"); 1284 ENA_FLAG_SET_ATOMIC( 1285 ENA_FLAG_DEV_UP_BEFORE_RESET, adapter); 1286 ena_trigger_reset(adapter, 1287 ENA_REGS_RESET_OS_TRIGGER); 1288 } 1289 } 1290 } 1291 1292 ENA_LOCK_UNLOCK(adapter); 1293 1294 return (rc); 1295 } 1296 1297 static void 1298 ena_free_rx_bufs(struct ena_adapter *adapter, unsigned int qid) 1299 { 1300 struct ena_ring *rx_ring = &adapter->rx_ring[qid]; 1301 unsigned int i; 1302 1303 for (i = 0; i < rx_ring->ring_size; i++) { 1304 struct ena_rx_buffer *rx_info = &rx_ring->rx_buffer_info[i]; 1305 1306 if (rx_info->mbuf != NULL) 1307 ena_free_rx_mbuf(adapter, rx_ring, rx_info); 1308 #ifdef DEV_NETMAP 1309 if (((if_getflags(adapter->ifp) & IFF_DYING) == 0) && 1310 (adapter->ifp->if_capenable & IFCAP_NETMAP)) { 1311 if (rx_info->netmap_buf_idx != 0) 1312 ena_netmap_free_rx_slot(adapter, rx_ring, 1313 rx_info); 1314 } 1315 #endif /* DEV_NETMAP */ 1316 } 1317 } 1318 1319 /** 1320 * ena_refill_all_rx_bufs - allocate all queues Rx buffers 1321 * @adapter: network interface device structure 1322 * 1323 */ 1324 static void 1325 ena_refill_all_rx_bufs(struct ena_adapter *adapter) 1326 { 1327 struct ena_ring *rx_ring; 1328 int i, rc, bufs_num; 1329 1330 for (i = 0; i < adapter->num_io_queues; i++) { 1331 rx_ring = &adapter->rx_ring[i]; 1332 bufs_num = rx_ring->ring_size - 1; 1333 rc = ena_refill_rx_bufs(rx_ring, bufs_num); 1334 if (unlikely(rc != bufs_num)) 1335 ena_trace(ENA_WARNING, "refilling Queue %d failed. " 1336 "Allocated %d buffers from: %d\n", i, rc, bufs_num); 1337 #ifdef DEV_NETMAP 1338 rx_ring->initialized = true; 1339 #endif /* DEV_NETMAP */ 1340 } 1341 } 1342 1343 static void 1344 ena_free_all_rx_bufs(struct ena_adapter *adapter) 1345 { 1346 int i; 1347 1348 for (i = 0; i < adapter->num_io_queues; i++) 1349 ena_free_rx_bufs(adapter, i); 1350 } 1351 1352 /** 1353 * ena_free_tx_bufs - Free Tx Buffers per Queue 1354 * @adapter: network interface device structure 1355 * @qid: queue index 1356 **/ 1357 static void 1358 ena_free_tx_bufs(struct ena_adapter *adapter, unsigned int qid) 1359 { 1360 bool print_once = true; 1361 struct ena_ring *tx_ring = &adapter->tx_ring[qid]; 1362 1363 ENA_RING_MTX_LOCK(tx_ring); 1364 for (int i = 0; i < tx_ring->ring_size; i++) { 1365 struct ena_tx_buffer *tx_info = &tx_ring->tx_buffer_info[i]; 1366 1367 if (tx_info->mbuf == NULL) 1368 continue; 1369 1370 if (print_once) { 1371 device_printf(adapter->pdev, 1372 "free uncompleted tx mbuf qid %d idx 0x%x\n", 1373 qid, i); 1374 print_once = false; 1375 } else { 1376 ena_trace(ENA_DBG, 1377 "free uncompleted tx mbuf qid %d idx 0x%x\n", 1378 qid, i); 1379 } 1380 1381 bus_dmamap_sync(adapter->tx_buf_tag, tx_info->dmamap, 1382 BUS_DMASYNC_POSTWRITE); 1383 bus_dmamap_unload(adapter->tx_buf_tag, tx_info->dmamap); 1384 1385 m_free(tx_info->mbuf); 1386 tx_info->mbuf = NULL; 1387 } 1388 ENA_RING_MTX_UNLOCK(tx_ring); 1389 } 1390 1391 static void 1392 ena_free_all_tx_bufs(struct ena_adapter *adapter) 1393 { 1394 1395 for (int i = 0; i < adapter->num_io_queues; i++) 1396 ena_free_tx_bufs(adapter, i); 1397 } 1398 1399 static void 1400 ena_destroy_all_tx_queues(struct ena_adapter *adapter) 1401 { 1402 uint16_t ena_qid; 1403 int i; 1404 1405 for (i = 0; i < adapter->num_io_queues; i++) { 1406 ena_qid = ENA_IO_TXQ_IDX(i); 1407 ena_com_destroy_io_queue(adapter->ena_dev, ena_qid); 1408 } 1409 } 1410 1411 static void 1412 ena_destroy_all_rx_queues(struct ena_adapter *adapter) 1413 { 1414 uint16_t ena_qid; 1415 int i; 1416 1417 for (i = 0; i < adapter->num_io_queues; i++) { 1418 ena_qid = ENA_IO_RXQ_IDX(i); 1419 ena_com_destroy_io_queue(adapter->ena_dev, ena_qid); 1420 } 1421 } 1422 1423 static void 1424 ena_destroy_all_io_queues(struct ena_adapter *adapter) 1425 { 1426 struct ena_que *queue; 1427 int i; 1428 1429 for (i = 0; i < adapter->num_io_queues; i++) { 1430 queue = &adapter->que[i]; 1431 while (taskqueue_cancel(queue->cleanup_tq, 1432 &queue->cleanup_task, NULL)) 1433 taskqueue_drain(queue->cleanup_tq, 1434 &queue->cleanup_task); 1435 taskqueue_free(queue->cleanup_tq); 1436 } 1437 1438 ena_destroy_all_tx_queues(adapter); 1439 ena_destroy_all_rx_queues(adapter); 1440 } 1441 1442 static int 1443 ena_create_io_queues(struct ena_adapter *adapter) 1444 { 1445 struct ena_com_dev *ena_dev = adapter->ena_dev; 1446 struct ena_com_create_io_ctx ctx; 1447 struct ena_ring *ring; 1448 struct ena_que *queue; 1449 uint16_t ena_qid; 1450 uint32_t msix_vector; 1451 int rc, i; 1452 1453 /* Create TX queues */ 1454 for (i = 0; i < adapter->num_io_queues; i++) { 1455 msix_vector = ENA_IO_IRQ_IDX(i); 1456 ena_qid = ENA_IO_TXQ_IDX(i); 1457 ctx.mem_queue_type = ena_dev->tx_mem_queue_type; 1458 ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_TX; 1459 ctx.queue_size = adapter->requested_tx_ring_size; 1460 ctx.msix_vector = msix_vector; 1461 ctx.qid = ena_qid; 1462 rc = ena_com_create_io_queue(ena_dev, &ctx); 1463 if (rc != 0) { 1464 device_printf(adapter->pdev, 1465 "Failed to create io TX queue #%d rc: %d\n", i, rc); 1466 goto err_tx; 1467 } 1468 ring = &adapter->tx_ring[i]; 1469 rc = ena_com_get_io_handlers(ena_dev, ena_qid, 1470 &ring->ena_com_io_sq, 1471 &ring->ena_com_io_cq); 1472 if (rc != 0) { 1473 device_printf(adapter->pdev, 1474 "Failed to get TX queue handlers. TX queue num" 1475 " %d rc: %d\n", i, rc); 1476 ena_com_destroy_io_queue(ena_dev, ena_qid); 1477 goto err_tx; 1478 } 1479 } 1480 1481 /* Create RX queues */ 1482 for (i = 0; i < adapter->num_io_queues; i++) { 1483 msix_vector = ENA_IO_IRQ_IDX(i); 1484 ena_qid = ENA_IO_RXQ_IDX(i); 1485 ctx.mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST; 1486 ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_RX; 1487 ctx.queue_size = adapter->requested_rx_ring_size; 1488 ctx.msix_vector = msix_vector; 1489 ctx.qid = ena_qid; 1490 rc = ena_com_create_io_queue(ena_dev, &ctx); 1491 if (unlikely(rc != 0)) { 1492 device_printf(adapter->pdev, 1493 "Failed to create io RX queue[%d] rc: %d\n", i, rc); 1494 goto err_rx; 1495 } 1496 1497 ring = &adapter->rx_ring[i]; 1498 rc = ena_com_get_io_handlers(ena_dev, ena_qid, 1499 &ring->ena_com_io_sq, 1500 &ring->ena_com_io_cq); 1501 if (unlikely(rc != 0)) { 1502 device_printf(adapter->pdev, 1503 "Failed to get RX queue handlers. RX queue num" 1504 " %d rc: %d\n", i, rc); 1505 ena_com_destroy_io_queue(ena_dev, ena_qid); 1506 goto err_rx; 1507 } 1508 } 1509 1510 for (i = 0; i < adapter->num_io_queues; i++) { 1511 queue = &adapter->que[i]; 1512 1513 NET_TASK_INIT(&queue->cleanup_task, 0, ena_cleanup, queue); 1514 queue->cleanup_tq = taskqueue_create_fast("ena cleanup", 1515 M_WAITOK, taskqueue_thread_enqueue, &queue->cleanup_tq); 1516 1517 taskqueue_start_threads(&queue->cleanup_tq, 1, PI_NET, 1518 "%s queue %d cleanup", 1519 device_get_nameunit(adapter->pdev), i); 1520 } 1521 1522 return (0); 1523 1524 err_rx: 1525 while (i--) 1526 ena_com_destroy_io_queue(ena_dev, ENA_IO_RXQ_IDX(i)); 1527 i = adapter->num_io_queues; 1528 err_tx: 1529 while (i--) 1530 ena_com_destroy_io_queue(ena_dev, ENA_IO_TXQ_IDX(i)); 1531 1532 return (ENXIO); 1533 } 1534 1535 /********************************************************************* 1536 * 1537 * MSIX & Interrupt Service routine 1538 * 1539 **********************************************************************/ 1540 1541 /** 1542 * ena_handle_msix - MSIX Interrupt Handler for admin/async queue 1543 * @arg: interrupt number 1544 **/ 1545 static void 1546 ena_intr_msix_mgmnt(void *arg) 1547 { 1548 struct ena_adapter *adapter = (struct ena_adapter *)arg; 1549 1550 ena_com_admin_q_comp_intr_handler(adapter->ena_dev); 1551 if (likely(ENA_FLAG_ISSET(ENA_FLAG_DEVICE_RUNNING, adapter))) 1552 ena_com_aenq_intr_handler(adapter->ena_dev, arg); 1553 } 1554 1555 /** 1556 * ena_handle_msix - MSIX Interrupt Handler for Tx/Rx 1557 * @arg: queue 1558 **/ 1559 static int 1560 ena_handle_msix(void *arg) 1561 { 1562 struct ena_que *queue = arg; 1563 struct ena_adapter *adapter = queue->adapter; 1564 if_t ifp = adapter->ifp; 1565 1566 if (unlikely((if_getdrvflags(ifp) & IFF_DRV_RUNNING) == 0)) 1567 return (FILTER_STRAY); 1568 1569 taskqueue_enqueue(queue->cleanup_tq, &queue->cleanup_task); 1570 1571 return (FILTER_HANDLED); 1572 } 1573 1574 static int 1575 ena_enable_msix(struct ena_adapter *adapter) 1576 { 1577 device_t dev = adapter->pdev; 1578 int msix_vecs, msix_req; 1579 int i, rc = 0; 1580 1581 if (ENA_FLAG_ISSET(ENA_FLAG_MSIX_ENABLED, adapter)) { 1582 device_printf(dev, "Error, MSI-X is already enabled\n"); 1583 return (EINVAL); 1584 } 1585 1586 /* Reserved the max msix vectors we might need */ 1587 msix_vecs = ENA_MAX_MSIX_VEC(adapter->max_num_io_queues); 1588 1589 adapter->msix_entries = malloc(msix_vecs * sizeof(struct msix_entry), 1590 M_DEVBUF, M_WAITOK | M_ZERO); 1591 1592 ena_trace(ENA_DBG, "trying to enable MSI-X, vectors: %d\n", msix_vecs); 1593 1594 for (i = 0; i < msix_vecs; i++) { 1595 adapter->msix_entries[i].entry = i; 1596 /* Vectors must start from 1 */ 1597 adapter->msix_entries[i].vector = i + 1; 1598 } 1599 1600 msix_req = msix_vecs; 1601 rc = pci_alloc_msix(dev, &msix_vecs); 1602 if (unlikely(rc != 0)) { 1603 device_printf(dev, 1604 "Failed to enable MSIX, vectors %d rc %d\n", msix_vecs, rc); 1605 1606 rc = ENOSPC; 1607 goto err_msix_free; 1608 } 1609 1610 if (msix_vecs != msix_req) { 1611 if (msix_vecs == ENA_ADMIN_MSIX_VEC) { 1612 device_printf(dev, 1613 "Not enough number of MSI-x allocated: %d\n", 1614 msix_vecs); 1615 pci_release_msi(dev); 1616 rc = ENOSPC; 1617 goto err_msix_free; 1618 } 1619 device_printf(dev, "Enable only %d MSI-x (out of %d), reduce " 1620 "the number of queues\n", msix_vecs, msix_req); 1621 } 1622 1623 adapter->msix_vecs = msix_vecs; 1624 ENA_FLAG_SET_ATOMIC(ENA_FLAG_MSIX_ENABLED, adapter); 1625 1626 return (0); 1627 1628 err_msix_free: 1629 free(adapter->msix_entries, M_DEVBUF); 1630 adapter->msix_entries = NULL; 1631 1632 return (rc); 1633 } 1634 1635 static void 1636 ena_setup_mgmnt_intr(struct ena_adapter *adapter) 1637 { 1638 1639 snprintf(adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].name, 1640 ENA_IRQNAME_SIZE, "ena-mgmnt@pci:%s", 1641 device_get_nameunit(adapter->pdev)); 1642 /* 1643 * Handler is NULL on purpose, it will be set 1644 * when mgmnt interrupt is acquired 1645 */ 1646 adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].handler = NULL; 1647 adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].data = adapter; 1648 adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].vector = 1649 adapter->msix_entries[ENA_MGMNT_IRQ_IDX].vector; 1650 } 1651 1652 static int 1653 ena_setup_io_intr(struct ena_adapter *adapter) 1654 { 1655 static int last_bind_cpu = -1; 1656 int irq_idx; 1657 1658 if (adapter->msix_entries == NULL) 1659 return (EINVAL); 1660 1661 for (int i = 0; i < adapter->num_io_queues; i++) { 1662 irq_idx = ENA_IO_IRQ_IDX(i); 1663 1664 snprintf(adapter->irq_tbl[irq_idx].name, ENA_IRQNAME_SIZE, 1665 "%s-TxRx-%d", device_get_nameunit(adapter->pdev), i); 1666 adapter->irq_tbl[irq_idx].handler = ena_handle_msix; 1667 adapter->irq_tbl[irq_idx].data = &adapter->que[i]; 1668 adapter->irq_tbl[irq_idx].vector = 1669 adapter->msix_entries[irq_idx].vector; 1670 ena_trace(ENA_INFO | ENA_IOQ, "ena_setup_io_intr vector: %d\n", 1671 adapter->msix_entries[irq_idx].vector); 1672 1673 /* 1674 * We want to bind rings to the corresponding cpu 1675 * using something similar to the RSS round-robin technique. 1676 */ 1677 if (unlikely(last_bind_cpu < 0)) 1678 last_bind_cpu = CPU_FIRST(); 1679 adapter->que[i].cpu = adapter->irq_tbl[irq_idx].cpu = 1680 last_bind_cpu; 1681 last_bind_cpu = CPU_NEXT(last_bind_cpu); 1682 } 1683 1684 return (0); 1685 } 1686 1687 static int 1688 ena_request_mgmnt_irq(struct ena_adapter *adapter) 1689 { 1690 struct ena_irq *irq; 1691 unsigned long flags; 1692 int rc, rcc; 1693 1694 flags = RF_ACTIVE | RF_SHAREABLE; 1695 1696 irq = &adapter->irq_tbl[ENA_MGMNT_IRQ_IDX]; 1697 irq->res = bus_alloc_resource_any(adapter->pdev, SYS_RES_IRQ, 1698 &irq->vector, flags); 1699 1700 if (unlikely(irq->res == NULL)) { 1701 device_printf(adapter->pdev, "could not allocate " 1702 "irq vector: %d\n", irq->vector); 1703 return (ENXIO); 1704 } 1705 1706 rc = bus_setup_intr(adapter->pdev, irq->res, 1707 INTR_TYPE_NET | INTR_MPSAFE, NULL, ena_intr_msix_mgmnt, 1708 irq->data, &irq->cookie); 1709 if (unlikely(rc != 0)) { 1710 device_printf(adapter->pdev, "failed to register " 1711 "interrupt handler for irq %ju: %d\n", 1712 rman_get_start(irq->res), rc); 1713 goto err_res_free; 1714 } 1715 irq->requested = true; 1716 1717 return (rc); 1718 1719 err_res_free: 1720 ena_trace(ENA_INFO | ENA_ADMQ, "releasing resource for irq %d\n", 1721 irq->vector); 1722 rcc = bus_release_resource(adapter->pdev, SYS_RES_IRQ, 1723 irq->vector, irq->res); 1724 if (unlikely(rcc != 0)) 1725 device_printf(adapter->pdev, "dev has no parent while " 1726 "releasing res for irq: %d\n", irq->vector); 1727 irq->res = NULL; 1728 1729 return (rc); 1730 } 1731 1732 static int 1733 ena_request_io_irq(struct ena_adapter *adapter) 1734 { 1735 struct ena_irq *irq; 1736 unsigned long flags = 0; 1737 int rc = 0, i, rcc; 1738 1739 if (unlikely(!ENA_FLAG_ISSET(ENA_FLAG_MSIX_ENABLED, adapter))) { 1740 device_printf(adapter->pdev, 1741 "failed to request I/O IRQ: MSI-X is not enabled\n"); 1742 return (EINVAL); 1743 } else { 1744 flags = RF_ACTIVE | RF_SHAREABLE; 1745 } 1746 1747 for (i = ENA_IO_IRQ_FIRST_IDX; i < adapter->msix_vecs; i++) { 1748 irq = &adapter->irq_tbl[i]; 1749 1750 if (unlikely(irq->requested)) 1751 continue; 1752 1753 irq->res = bus_alloc_resource_any(adapter->pdev, SYS_RES_IRQ, 1754 &irq->vector, flags); 1755 if (unlikely(irq->res == NULL)) { 1756 rc = ENOMEM; 1757 device_printf(adapter->pdev, "could not allocate " 1758 "irq vector: %d\n", irq->vector); 1759 goto err; 1760 } 1761 1762 rc = bus_setup_intr(adapter->pdev, irq->res, 1763 INTR_TYPE_NET | INTR_MPSAFE, irq->handler, NULL, 1764 irq->data, &irq->cookie); 1765 if (unlikely(rc != 0)) { 1766 device_printf(adapter->pdev, "failed to register " 1767 "interrupt handler for irq %ju: %d\n", 1768 rman_get_start(irq->res), rc); 1769 goto err; 1770 } 1771 irq->requested = true; 1772 1773 ena_trace(ENA_INFO, "queue %d - cpu %d\n", 1774 i - ENA_IO_IRQ_FIRST_IDX, irq->cpu); 1775 } 1776 1777 return (rc); 1778 1779 err: 1780 1781 for (; i >= ENA_IO_IRQ_FIRST_IDX; i--) { 1782 irq = &adapter->irq_tbl[i]; 1783 rcc = 0; 1784 1785 /* Once we entered err: section and irq->requested is true we 1786 free both intr and resources */ 1787 if (irq->requested) 1788 rcc = bus_teardown_intr(adapter->pdev, irq->res, irq->cookie); 1789 if (unlikely(rcc != 0)) 1790 device_printf(adapter->pdev, "could not release" 1791 " irq: %d, error: %d\n", irq->vector, rcc); 1792 1793 /* If we entred err: section without irq->requested set we know 1794 it was bus_alloc_resource_any() that needs cleanup, provided 1795 res is not NULL. In case res is NULL no work in needed in 1796 this iteration */ 1797 rcc = 0; 1798 if (irq->res != NULL) { 1799 rcc = bus_release_resource(adapter->pdev, SYS_RES_IRQ, 1800 irq->vector, irq->res); 1801 } 1802 if (unlikely(rcc != 0)) 1803 device_printf(adapter->pdev, "dev has no parent while " 1804 "releasing res for irq: %d\n", irq->vector); 1805 irq->requested = false; 1806 irq->res = NULL; 1807 } 1808 1809 return (rc); 1810 } 1811 1812 static void 1813 ena_free_mgmnt_irq(struct ena_adapter *adapter) 1814 { 1815 struct ena_irq *irq; 1816 int rc; 1817 1818 irq = &adapter->irq_tbl[ENA_MGMNT_IRQ_IDX]; 1819 if (irq->requested) { 1820 ena_trace(ENA_INFO | ENA_ADMQ, "tear down irq: %d\n", 1821 irq->vector); 1822 rc = bus_teardown_intr(adapter->pdev, irq->res, irq->cookie); 1823 if (unlikely(rc != 0)) 1824 device_printf(adapter->pdev, "failed to tear " 1825 "down irq: %d\n", irq->vector); 1826 irq->requested = 0; 1827 } 1828 1829 if (irq->res != NULL) { 1830 ena_trace(ENA_INFO | ENA_ADMQ, "release resource irq: %d\n", 1831 irq->vector); 1832 rc = bus_release_resource(adapter->pdev, SYS_RES_IRQ, 1833 irq->vector, irq->res); 1834 irq->res = NULL; 1835 if (unlikely(rc != 0)) 1836 device_printf(adapter->pdev, "dev has no parent while " 1837 "releasing res for irq: %d\n", irq->vector); 1838 } 1839 } 1840 1841 static void 1842 ena_free_io_irq(struct ena_adapter *adapter) 1843 { 1844 struct ena_irq *irq; 1845 int rc; 1846 1847 for (int i = ENA_IO_IRQ_FIRST_IDX; i < adapter->msix_vecs; i++) { 1848 irq = &adapter->irq_tbl[i]; 1849 if (irq->requested) { 1850 ena_trace(ENA_INFO | ENA_IOQ, "tear down irq: %d\n", 1851 irq->vector); 1852 rc = bus_teardown_intr(adapter->pdev, irq->res, 1853 irq->cookie); 1854 if (unlikely(rc != 0)) { 1855 device_printf(adapter->pdev, "failed to tear " 1856 "down irq: %d\n", irq->vector); 1857 } 1858 irq->requested = 0; 1859 } 1860 1861 if (irq->res != NULL) { 1862 ena_trace(ENA_INFO | ENA_IOQ, "release resource irq: %d\n", 1863 irq->vector); 1864 rc = bus_release_resource(adapter->pdev, SYS_RES_IRQ, 1865 irq->vector, irq->res); 1866 irq->res = NULL; 1867 if (unlikely(rc != 0)) { 1868 device_printf(adapter->pdev, "dev has no parent" 1869 " while releasing res for irq: %d\n", 1870 irq->vector); 1871 } 1872 } 1873 } 1874 } 1875 1876 static void 1877 ena_free_irqs(struct ena_adapter* adapter) 1878 { 1879 1880 ena_free_io_irq(adapter); 1881 ena_free_mgmnt_irq(adapter); 1882 ena_disable_msix(adapter); 1883 } 1884 1885 static void 1886 ena_disable_msix(struct ena_adapter *adapter) 1887 { 1888 1889 if (ENA_FLAG_ISSET(ENA_FLAG_MSIX_ENABLED, adapter)) { 1890 ENA_FLAG_CLEAR_ATOMIC(ENA_FLAG_MSIX_ENABLED, adapter); 1891 pci_release_msi(adapter->pdev); 1892 } 1893 1894 adapter->msix_vecs = 0; 1895 if (adapter->msix_entries != NULL) 1896 free(adapter->msix_entries, M_DEVBUF); 1897 adapter->msix_entries = NULL; 1898 } 1899 1900 static void 1901 ena_unmask_all_io_irqs(struct ena_adapter *adapter) 1902 { 1903 struct ena_com_io_cq* io_cq; 1904 struct ena_eth_io_intr_reg intr_reg; 1905 uint16_t ena_qid; 1906 int i; 1907 1908 /* Unmask interrupts for all queues */ 1909 for (i = 0; i < adapter->num_io_queues; i++) { 1910 ena_qid = ENA_IO_TXQ_IDX(i); 1911 io_cq = &adapter->ena_dev->io_cq_queues[ena_qid]; 1912 ena_com_update_intr_reg(&intr_reg, 0, 0, true); 1913 ena_com_unmask_intr(io_cq, &intr_reg); 1914 } 1915 } 1916 1917 /* Configure the Rx forwarding */ 1918 static int 1919 ena_rss_configure(struct ena_adapter *adapter) 1920 { 1921 struct ena_com_dev *ena_dev = adapter->ena_dev; 1922 int rc; 1923 1924 /* In case the RSS table was destroyed */ 1925 if (!ena_dev->rss.tbl_log_size) { 1926 rc = ena_rss_init_default(adapter); 1927 if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) { 1928 device_printf(adapter->pdev, 1929 "WARNING: RSS was not properly re-initialized," 1930 " it will affect bandwidth\n"); 1931 ENA_FLAG_CLEAR_ATOMIC(ENA_FLAG_RSS_ACTIVE, adapter); 1932 return (rc); 1933 } 1934 } 1935 1936 /* Set indirect table */ 1937 rc = ena_com_indirect_table_set(ena_dev); 1938 if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) 1939 return (rc); 1940 1941 /* Configure hash function (if supported) */ 1942 rc = ena_com_set_hash_function(ena_dev); 1943 if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) 1944 return (rc); 1945 1946 /* Configure hash inputs (if supported) */ 1947 rc = ena_com_set_hash_ctrl(ena_dev); 1948 if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) 1949 return (rc); 1950 1951 return (0); 1952 } 1953 1954 static int 1955 ena_up_complete(struct ena_adapter *adapter) 1956 { 1957 int rc; 1958 1959 if (likely(ENA_FLAG_ISSET(ENA_FLAG_RSS_ACTIVE, adapter))) { 1960 rc = ena_rss_configure(adapter); 1961 if (rc != 0) { 1962 device_printf(adapter->pdev, 1963 "Failed to configure RSS\n"); 1964 return (rc); 1965 } 1966 } 1967 1968 rc = ena_change_mtu(adapter->ifp, adapter->ifp->if_mtu); 1969 if (unlikely(rc != 0)) 1970 return (rc); 1971 1972 ena_refill_all_rx_bufs(adapter); 1973 ena_reset_counters((counter_u64_t *)&adapter->hw_stats, 1974 sizeof(adapter->hw_stats)); 1975 1976 return (0); 1977 } 1978 1979 static void 1980 set_io_rings_size(struct ena_adapter *adapter, int new_tx_size, 1981 int new_rx_size) 1982 { 1983 int i; 1984 1985 for (i = 0; i < adapter->num_io_queues; i++) { 1986 adapter->tx_ring[i].ring_size = new_tx_size; 1987 adapter->rx_ring[i].ring_size = new_rx_size; 1988 } 1989 } 1990 1991 static int 1992 create_queues_with_size_backoff(struct ena_adapter *adapter) 1993 { 1994 int rc; 1995 uint32_t cur_rx_ring_size, cur_tx_ring_size; 1996 uint32_t new_rx_ring_size, new_tx_ring_size; 1997 1998 /* 1999 * Current queue sizes might be set to smaller than the requested 2000 * ones due to past queue allocation failures. 2001 */ 2002 set_io_rings_size(adapter, adapter->requested_tx_ring_size, 2003 adapter->requested_rx_ring_size); 2004 2005 while (1) { 2006 /* Allocate transmit descriptors */ 2007 rc = ena_setup_all_tx_resources(adapter); 2008 if (unlikely(rc != 0)) { 2009 ena_trace(ENA_ALERT, "err_setup_tx\n"); 2010 goto err_setup_tx; 2011 } 2012 2013 /* Allocate receive descriptors */ 2014 rc = ena_setup_all_rx_resources(adapter); 2015 if (unlikely(rc != 0)) { 2016 ena_trace(ENA_ALERT, "err_setup_rx\n"); 2017 goto err_setup_rx; 2018 } 2019 2020 /* Create IO queues for Rx & Tx */ 2021 rc = ena_create_io_queues(adapter); 2022 if (unlikely(rc != 0)) { 2023 ena_trace(ENA_ALERT, 2024 "create IO queues failed\n"); 2025 goto err_io_que; 2026 } 2027 2028 return (0); 2029 2030 err_io_que: 2031 ena_free_all_rx_resources(adapter); 2032 err_setup_rx: 2033 ena_free_all_tx_resources(adapter); 2034 err_setup_tx: 2035 /* 2036 * Lower the ring size if ENOMEM. Otherwise, return the 2037 * error straightaway. 2038 */ 2039 if (unlikely(rc != ENOMEM)) { 2040 ena_trace(ENA_ALERT, 2041 "Queue creation failed with error code: %d\n", rc); 2042 return (rc); 2043 } 2044 2045 cur_tx_ring_size = adapter->tx_ring[0].ring_size; 2046 cur_rx_ring_size = adapter->rx_ring[0].ring_size; 2047 2048 device_printf(adapter->pdev, 2049 "Not enough memory to create queues with sizes TX=%d, RX=%d\n", 2050 cur_tx_ring_size, cur_rx_ring_size); 2051 2052 new_tx_ring_size = cur_tx_ring_size; 2053 new_rx_ring_size = cur_rx_ring_size; 2054 2055 /* 2056 * Decrease the size of a larger queue, or decrease both if they are 2057 * the same size. 2058 */ 2059 if (cur_rx_ring_size <= cur_tx_ring_size) 2060 new_tx_ring_size = cur_tx_ring_size / 2; 2061 if (cur_rx_ring_size >= cur_tx_ring_size) 2062 new_rx_ring_size = cur_rx_ring_size / 2; 2063 2064 if (new_tx_ring_size < ENA_MIN_RING_SIZE || 2065 new_rx_ring_size < ENA_MIN_RING_SIZE) { 2066 device_printf(adapter->pdev, 2067 "Queue creation failed with the smallest possible queue size" 2068 "of %d for both queues. Not retrying with smaller queues\n", 2069 ENA_MIN_RING_SIZE); 2070 return (rc); 2071 } 2072 2073 set_io_rings_size(adapter, new_tx_ring_size, new_rx_ring_size); 2074 } 2075 } 2076 2077 int 2078 ena_up(struct ena_adapter *adapter) 2079 { 2080 int rc = 0; 2081 2082 if (unlikely(device_is_attached(adapter->pdev) == 0)) { 2083 device_printf(adapter->pdev, "device is not attached!\n"); 2084 return (ENXIO); 2085 } 2086 2087 if (ENA_FLAG_ISSET(ENA_FLAG_DEV_UP, adapter)) 2088 return (0); 2089 2090 device_printf(adapter->pdev, "device is going UP\n"); 2091 2092 /* setup interrupts for IO queues */ 2093 rc = ena_setup_io_intr(adapter); 2094 if (unlikely(rc != 0)) { 2095 ena_trace(ENA_ALERT, "error setting up IO interrupt\n"); 2096 goto error; 2097 } 2098 rc = ena_request_io_irq(adapter); 2099 if (unlikely(rc != 0)) { 2100 ena_trace(ENA_ALERT, "err_req_irq\n"); 2101 goto error; 2102 } 2103 2104 device_printf(adapter->pdev, 2105 "Creating %u IO queues. Rx queue size: %d, Tx queue size: %d, " 2106 "LLQ is %s\n", 2107 adapter->num_io_queues, 2108 adapter->requested_rx_ring_size, 2109 adapter->requested_tx_ring_size, 2110 (adapter->ena_dev->tx_mem_queue_type == 2111 ENA_ADMIN_PLACEMENT_POLICY_DEV) ? "ENABLED" : "DISABLED"); 2112 2113 rc = create_queues_with_size_backoff(adapter); 2114 if (unlikely(rc != 0)) { 2115 ena_trace(ENA_ALERT, 2116 "error creating queues with size backoff\n"); 2117 goto err_create_queues_with_backoff; 2118 } 2119 2120 if (ENA_FLAG_ISSET(ENA_FLAG_LINK_UP, adapter)) 2121 if_link_state_change(adapter->ifp, LINK_STATE_UP); 2122 2123 rc = ena_up_complete(adapter); 2124 if (unlikely(rc != 0)) 2125 goto err_up_complete; 2126 2127 counter_u64_add(adapter->dev_stats.interface_up, 1); 2128 2129 ena_update_hwassist(adapter); 2130 2131 if_setdrvflagbits(adapter->ifp, IFF_DRV_RUNNING, 2132 IFF_DRV_OACTIVE); 2133 2134 /* Activate timer service only if the device is running. 2135 * If this flag is not set, it means that the driver is being 2136 * reset and timer service will be activated afterwards. 2137 */ 2138 if (ENA_FLAG_ISSET(ENA_FLAG_DEVICE_RUNNING, adapter)) { 2139 callout_reset_sbt(&adapter->timer_service, SBT_1S, 2140 SBT_1S, ena_timer_service, (void *)adapter, 0); 2141 } 2142 2143 ENA_FLAG_SET_ATOMIC(ENA_FLAG_DEV_UP, adapter); 2144 2145 ena_unmask_all_io_irqs(adapter); 2146 2147 return (0); 2148 2149 err_up_complete: 2150 ena_destroy_all_io_queues(adapter); 2151 ena_free_all_rx_resources(adapter); 2152 ena_free_all_tx_resources(adapter); 2153 err_create_queues_with_backoff: 2154 ena_free_io_irq(adapter); 2155 error: 2156 return (rc); 2157 } 2158 2159 static uint64_t 2160 ena_get_counter(if_t ifp, ift_counter cnt) 2161 { 2162 struct ena_adapter *adapter; 2163 struct ena_hw_stats *stats; 2164 2165 adapter = if_getsoftc(ifp); 2166 stats = &adapter->hw_stats; 2167 2168 switch (cnt) { 2169 case IFCOUNTER_IPACKETS: 2170 return (counter_u64_fetch(stats->rx_packets)); 2171 case IFCOUNTER_OPACKETS: 2172 return (counter_u64_fetch(stats->tx_packets)); 2173 case IFCOUNTER_IBYTES: 2174 return (counter_u64_fetch(stats->rx_bytes)); 2175 case IFCOUNTER_OBYTES: 2176 return (counter_u64_fetch(stats->tx_bytes)); 2177 case IFCOUNTER_IQDROPS: 2178 return (counter_u64_fetch(stats->rx_drops)); 2179 case IFCOUNTER_OQDROPS: 2180 return (counter_u64_fetch(stats->tx_drops)); 2181 default: 2182 return (if_get_counter_default(ifp, cnt)); 2183 } 2184 } 2185 2186 static int 2187 ena_media_change(if_t ifp) 2188 { 2189 /* Media Change is not supported by firmware */ 2190 return (0); 2191 } 2192 2193 static void 2194 ena_media_status(if_t ifp, struct ifmediareq *ifmr) 2195 { 2196 struct ena_adapter *adapter = if_getsoftc(ifp); 2197 ena_trace(ENA_DBG, "enter\n"); 2198 2199 ENA_LOCK_LOCK(adapter); 2200 2201 ifmr->ifm_status = IFM_AVALID; 2202 ifmr->ifm_active = IFM_ETHER; 2203 2204 if (!ENA_FLAG_ISSET(ENA_FLAG_LINK_UP, adapter)) { 2205 ENA_LOCK_UNLOCK(adapter); 2206 ena_trace(ENA_INFO, "Link is down\n"); 2207 return; 2208 } 2209 2210 ifmr->ifm_status |= IFM_ACTIVE; 2211 ifmr->ifm_active |= IFM_UNKNOWN | IFM_FDX; 2212 2213 ENA_LOCK_UNLOCK(adapter); 2214 } 2215 2216 static void 2217 ena_init(void *arg) 2218 { 2219 struct ena_adapter *adapter = (struct ena_adapter *)arg; 2220 2221 if (!ENA_FLAG_ISSET(ENA_FLAG_DEV_UP, adapter)) { 2222 ENA_LOCK_LOCK(adapter); 2223 ena_up(adapter); 2224 ENA_LOCK_UNLOCK(adapter); 2225 } 2226 } 2227 2228 static int 2229 ena_ioctl(if_t ifp, u_long command, caddr_t data) 2230 { 2231 struct ena_adapter *adapter; 2232 struct ifreq *ifr; 2233 int rc; 2234 2235 adapter = ifp->if_softc; 2236 ifr = (struct ifreq *)data; 2237 2238 /* 2239 * Acquiring lock to prevent from running up and down routines parallel. 2240 */ 2241 rc = 0; 2242 switch (command) { 2243 case SIOCSIFMTU: 2244 if (ifp->if_mtu == ifr->ifr_mtu) 2245 break; 2246 ENA_LOCK_LOCK(adapter); 2247 ena_down(adapter); 2248 2249 ena_change_mtu(ifp, ifr->ifr_mtu); 2250 2251 rc = ena_up(adapter); 2252 ENA_LOCK_UNLOCK(adapter); 2253 break; 2254 2255 case SIOCSIFFLAGS: 2256 if ((ifp->if_flags & IFF_UP) != 0) { 2257 if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) != 0) { 2258 if ((ifp->if_flags & (IFF_PROMISC | 2259 IFF_ALLMULTI)) != 0) { 2260 device_printf(adapter->pdev, 2261 "ioctl promisc/allmulti\n"); 2262 } 2263 } else { 2264 ENA_LOCK_LOCK(adapter); 2265 rc = ena_up(adapter); 2266 ENA_LOCK_UNLOCK(adapter); 2267 } 2268 } else { 2269 if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) != 0) { 2270 ENA_LOCK_LOCK(adapter); 2271 ena_down(adapter); 2272 ENA_LOCK_UNLOCK(adapter); 2273 } 2274 } 2275 break; 2276 2277 case SIOCADDMULTI: 2278 case SIOCDELMULTI: 2279 break; 2280 2281 case SIOCSIFMEDIA: 2282 case SIOCGIFMEDIA: 2283 rc = ifmedia_ioctl(ifp, ifr, &adapter->media, command); 2284 break; 2285 2286 case SIOCSIFCAP: 2287 { 2288 int reinit = 0; 2289 2290 if (ifr->ifr_reqcap != ifp->if_capenable) { 2291 ifp->if_capenable = ifr->ifr_reqcap; 2292 reinit = 1; 2293 } 2294 2295 if ((reinit != 0) && 2296 ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) != 0)) { 2297 ENA_LOCK_LOCK(adapter); 2298 ena_down(adapter); 2299 rc = ena_up(adapter); 2300 ENA_LOCK_UNLOCK(adapter); 2301 } 2302 } 2303 2304 break; 2305 default: 2306 rc = ether_ioctl(ifp, command, data); 2307 break; 2308 } 2309 2310 return (rc); 2311 } 2312 2313 static int 2314 ena_get_dev_offloads(struct ena_com_dev_get_features_ctx *feat) 2315 { 2316 int caps = 0; 2317 2318 if ((feat->offload.tx & 2319 (ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK | 2320 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK | 2321 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK)) != 0) 2322 caps |= IFCAP_TXCSUM; 2323 2324 if ((feat->offload.tx & 2325 (ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_MASK | 2326 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_MASK)) != 0) 2327 caps |= IFCAP_TXCSUM_IPV6; 2328 2329 if ((feat->offload.tx & 2330 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK) != 0) 2331 caps |= IFCAP_TSO4; 2332 2333 if ((feat->offload.tx & 2334 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV6_MASK) != 0) 2335 caps |= IFCAP_TSO6; 2336 2337 if ((feat->offload.rx_supported & 2338 (ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK | 2339 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L3_CSUM_IPV4_MASK)) != 0) 2340 caps |= IFCAP_RXCSUM; 2341 2342 if ((feat->offload.rx_supported & 2343 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_MASK) != 0) 2344 caps |= IFCAP_RXCSUM_IPV6; 2345 2346 caps |= IFCAP_LRO | IFCAP_JUMBO_MTU; 2347 2348 return (caps); 2349 } 2350 2351 static void 2352 ena_update_host_info(struct ena_admin_host_info *host_info, if_t ifp) 2353 { 2354 2355 host_info->supported_network_features[0] = 2356 (uint32_t)if_getcapabilities(ifp); 2357 } 2358 2359 static void 2360 ena_update_hwassist(struct ena_adapter *adapter) 2361 { 2362 if_t ifp = adapter->ifp; 2363 uint32_t feat = adapter->tx_offload_cap; 2364 int cap = if_getcapenable(ifp); 2365 int flags = 0; 2366 2367 if_clearhwassist(ifp); 2368 2369 if ((cap & IFCAP_TXCSUM) != 0) { 2370 if ((feat & 2371 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK) != 0) 2372 flags |= CSUM_IP; 2373 if ((feat & 2374 (ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK | 2375 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK)) != 0) 2376 flags |= CSUM_IP_UDP | CSUM_IP_TCP; 2377 } 2378 2379 if ((cap & IFCAP_TXCSUM_IPV6) != 0) 2380 flags |= CSUM_IP6_UDP | CSUM_IP6_TCP; 2381 2382 if ((cap & IFCAP_TSO4) != 0) 2383 flags |= CSUM_IP_TSO; 2384 2385 if ((cap & IFCAP_TSO6) != 0) 2386 flags |= CSUM_IP6_TSO; 2387 2388 if_sethwassistbits(ifp, flags, 0); 2389 } 2390 2391 static int 2392 ena_setup_ifnet(device_t pdev, struct ena_adapter *adapter, 2393 struct ena_com_dev_get_features_ctx *feat) 2394 { 2395 if_t ifp; 2396 int caps = 0; 2397 2398 ifp = adapter->ifp = if_gethandle(IFT_ETHER); 2399 if (unlikely(ifp == NULL)) { 2400 ena_trace(ENA_ALERT, "can not allocate ifnet structure\n"); 2401 return (ENXIO); 2402 } 2403 if_initname(ifp, device_get_name(pdev), device_get_unit(pdev)); 2404 if_setdev(ifp, pdev); 2405 if_setsoftc(ifp, adapter); 2406 2407 if_setflags(ifp, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST | 2408 IFF_KNOWSEPOCH); 2409 if_setinitfn(ifp, ena_init); 2410 if_settransmitfn(ifp, ena_mq_start); 2411 if_setqflushfn(ifp, ena_qflush); 2412 if_setioctlfn(ifp, ena_ioctl); 2413 if_setgetcounterfn(ifp, ena_get_counter); 2414 2415 if_setsendqlen(ifp, adapter->requested_tx_ring_size); 2416 if_setsendqready(ifp); 2417 if_setmtu(ifp, ETHERMTU); 2418 if_setbaudrate(ifp, 0); 2419 /* Zeroize capabilities... */ 2420 if_setcapabilities(ifp, 0); 2421 if_setcapenable(ifp, 0); 2422 /* check hardware support */ 2423 caps = ena_get_dev_offloads(feat); 2424 /* ... and set them */ 2425 if_setcapabilitiesbit(ifp, caps, 0); 2426 2427 /* TSO parameters */ 2428 ifp->if_hw_tsomax = ENA_TSO_MAXSIZE - 2429 (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN); 2430 ifp->if_hw_tsomaxsegcount = adapter->max_tx_sgl_size - 1; 2431 ifp->if_hw_tsomaxsegsize = ENA_TSO_MAXSIZE; 2432 2433 if_setifheaderlen(ifp, sizeof(struct ether_vlan_header)); 2434 if_setcapenable(ifp, if_getcapabilities(ifp)); 2435 2436 /* 2437 * Specify the media types supported by this adapter and register 2438 * callbacks to update media and link information 2439 */ 2440 ifmedia_init(&adapter->media, IFM_IMASK, 2441 ena_media_change, ena_media_status); 2442 ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL); 2443 ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO); 2444 2445 ether_ifattach(ifp, adapter->mac_addr); 2446 2447 return (0); 2448 } 2449 2450 void 2451 ena_down(struct ena_adapter *adapter) 2452 { 2453 int rc; 2454 2455 if (!ENA_FLAG_ISSET(ENA_FLAG_DEV_UP, adapter)) 2456 return; 2457 2458 device_printf(adapter->pdev, "device is going DOWN\n"); 2459 2460 callout_drain(&adapter->timer_service); 2461 2462 ENA_FLAG_CLEAR_ATOMIC(ENA_FLAG_DEV_UP, adapter); 2463 if_setdrvflagbits(adapter->ifp, IFF_DRV_OACTIVE, 2464 IFF_DRV_RUNNING); 2465 2466 ena_free_io_irq(adapter); 2467 2468 if (ENA_FLAG_ISSET(ENA_FLAG_TRIGGER_RESET, adapter)) { 2469 rc = ena_com_dev_reset(adapter->ena_dev, 2470 adapter->reset_reason); 2471 if (unlikely(rc != 0)) 2472 device_printf(adapter->pdev, 2473 "Device reset failed\n"); 2474 } 2475 2476 ena_destroy_all_io_queues(adapter); 2477 2478 ena_free_all_tx_bufs(adapter); 2479 ena_free_all_rx_bufs(adapter); 2480 ena_free_all_tx_resources(adapter); 2481 ena_free_all_rx_resources(adapter); 2482 2483 counter_u64_add(adapter->dev_stats.interface_down, 1); 2484 } 2485 2486 static uint32_t 2487 ena_calc_max_io_queue_num(device_t pdev, struct ena_com_dev *ena_dev, 2488 struct ena_com_dev_get_features_ctx *get_feat_ctx) 2489 { 2490 uint32_t io_tx_sq_num, io_tx_cq_num, io_rx_num, max_num_io_queues; 2491 2492 /* Regular queues capabilities */ 2493 if (ena_dev->supported_features & BIT(ENA_ADMIN_MAX_QUEUES_EXT)) { 2494 struct ena_admin_queue_ext_feature_fields *max_queue_ext = 2495 &get_feat_ctx->max_queue_ext.max_queue_ext; 2496 io_rx_num = min_t(int, max_queue_ext->max_rx_sq_num, 2497 max_queue_ext->max_rx_cq_num); 2498 2499 io_tx_sq_num = max_queue_ext->max_tx_sq_num; 2500 io_tx_cq_num = max_queue_ext->max_tx_cq_num; 2501 } else { 2502 struct ena_admin_queue_feature_desc *max_queues = 2503 &get_feat_ctx->max_queues; 2504 io_tx_sq_num = max_queues->max_sq_num; 2505 io_tx_cq_num = max_queues->max_cq_num; 2506 io_rx_num = min_t(int, io_tx_sq_num, io_tx_cq_num); 2507 } 2508 2509 /* In case of LLQ use the llq fields for the tx SQ/CQ */ 2510 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) 2511 io_tx_sq_num = get_feat_ctx->llq.max_llq_num; 2512 2513 max_num_io_queues = min_t(uint32_t, mp_ncpus, ENA_MAX_NUM_IO_QUEUES); 2514 max_num_io_queues = min_t(uint32_t, max_num_io_queues, io_rx_num); 2515 max_num_io_queues = min_t(uint32_t, max_num_io_queues, io_tx_sq_num); 2516 max_num_io_queues = min_t(uint32_t, max_num_io_queues, io_tx_cq_num); 2517 /* 1 IRQ for for mgmnt and 1 IRQ for each TX/RX pair */ 2518 max_num_io_queues = min_t(uint32_t, max_num_io_queues, 2519 pci_msix_count(pdev) - 1); 2520 2521 return (max_num_io_queues); 2522 } 2523 2524 static int 2525 ena_enable_wc(struct resource *res) 2526 { 2527 #if defined(__i386) || defined(__amd64) || defined(__aarch64__) 2528 vm_offset_t va; 2529 vm_size_t len; 2530 int rc; 2531 2532 va = (vm_offset_t)rman_get_virtual(res); 2533 len = rman_get_size(res); 2534 /* Enable write combining */ 2535 rc = pmap_change_attr(va, len, VM_MEMATTR_WRITE_COMBINING); 2536 if (unlikely(rc != 0)) { 2537 ena_trace(ENA_ALERT, "pmap_change_attr failed, %d\n", rc); 2538 return (rc); 2539 } 2540 2541 return (0); 2542 #endif 2543 return (EOPNOTSUPP); 2544 } 2545 2546 static int 2547 ena_set_queues_placement_policy(device_t pdev, struct ena_com_dev *ena_dev, 2548 struct ena_admin_feature_llq_desc *llq, 2549 struct ena_llq_configurations *llq_default_configurations) 2550 { 2551 struct ena_adapter *adapter = device_get_softc(pdev); 2552 int rc, rid; 2553 uint32_t llq_feature_mask; 2554 2555 llq_feature_mask = 1 << ENA_ADMIN_LLQ; 2556 if (!(ena_dev->supported_features & llq_feature_mask)) { 2557 device_printf(pdev, 2558 "LLQ is not supported. Fallback to host mode policy.\n"); 2559 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST; 2560 return (0); 2561 } 2562 2563 rc = ena_com_config_dev_mode(ena_dev, llq, llq_default_configurations); 2564 if (unlikely(rc != 0)) { 2565 device_printf(pdev, "Failed to configure the device mode. " 2566 "Fallback to host mode policy.\n"); 2567 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST; 2568 return (0); 2569 } 2570 2571 /* Nothing to config, exit */ 2572 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_HOST) 2573 return (0); 2574 2575 /* Try to allocate resources for LLQ bar */ 2576 rid = PCIR_BAR(ENA_MEM_BAR); 2577 adapter->memory = bus_alloc_resource_any(pdev, SYS_RES_MEMORY, 2578 &rid, RF_ACTIVE); 2579 if (unlikely(adapter->memory == NULL)) { 2580 device_printf(pdev, "unable to allocate LLQ bar resource. " 2581 "Fallback to host mode policy.\n"); 2582 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST; 2583 return (0); 2584 } 2585 2586 /* Enable write combining for better LLQ performance */ 2587 rc = ena_enable_wc(adapter->memory); 2588 if (unlikely(rc != 0)) { 2589 device_printf(pdev, "failed to enable write combining.\n"); 2590 return (rc); 2591 } 2592 2593 /* 2594 * Save virtual address of the device's memory region 2595 * for the ena_com layer. 2596 */ 2597 ena_dev->mem_bar = rman_get_virtual(adapter->memory); 2598 2599 return (0); 2600 } 2601 2602 static inline 2603 void set_default_llq_configurations(struct ena_llq_configurations *llq_config) 2604 { 2605 llq_config->llq_header_location = ENA_ADMIN_INLINE_HEADER; 2606 llq_config->llq_ring_entry_size = ENA_ADMIN_LIST_ENTRY_SIZE_128B; 2607 llq_config->llq_stride_ctrl = ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY; 2608 llq_config->llq_num_decs_before_header = 2609 ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_2; 2610 llq_config->llq_ring_entry_size_value = 128; 2611 } 2612 2613 static int 2614 ena_calc_io_queue_size(struct ena_calc_queue_size_ctx *ctx) 2615 { 2616 struct ena_admin_feature_llq_desc *llq = &ctx->get_feat_ctx->llq; 2617 struct ena_com_dev *ena_dev = ctx->ena_dev; 2618 uint32_t tx_queue_size = ENA_DEFAULT_RING_SIZE; 2619 uint32_t rx_queue_size = ENA_DEFAULT_RING_SIZE; 2620 uint32_t max_tx_queue_size; 2621 uint32_t max_rx_queue_size; 2622 2623 if (ena_dev->supported_features & BIT(ENA_ADMIN_MAX_QUEUES_EXT)) { 2624 struct ena_admin_queue_ext_feature_fields *max_queue_ext = 2625 &ctx->get_feat_ctx->max_queue_ext.max_queue_ext; 2626 max_rx_queue_size = min_t(uint32_t, 2627 max_queue_ext->max_rx_cq_depth, 2628 max_queue_ext->max_rx_sq_depth); 2629 max_tx_queue_size = max_queue_ext->max_tx_cq_depth; 2630 2631 if (ena_dev->tx_mem_queue_type == 2632 ENA_ADMIN_PLACEMENT_POLICY_DEV) 2633 max_tx_queue_size = min_t(uint32_t, max_tx_queue_size, 2634 llq->max_llq_depth); 2635 else 2636 max_tx_queue_size = min_t(uint32_t, max_tx_queue_size, 2637 max_queue_ext->max_tx_sq_depth); 2638 2639 ctx->max_tx_sgl_size = min_t(uint16_t, ENA_PKT_MAX_BUFS, 2640 max_queue_ext->max_per_packet_tx_descs); 2641 ctx->max_rx_sgl_size = min_t(uint16_t, ENA_PKT_MAX_BUFS, 2642 max_queue_ext->max_per_packet_rx_descs); 2643 } else { 2644 struct ena_admin_queue_feature_desc *max_queues = 2645 &ctx->get_feat_ctx->max_queues; 2646 max_rx_queue_size = min_t(uint32_t, 2647 max_queues->max_cq_depth, 2648 max_queues->max_sq_depth); 2649 max_tx_queue_size = max_queues->max_cq_depth; 2650 2651 if (ena_dev->tx_mem_queue_type == 2652 ENA_ADMIN_PLACEMENT_POLICY_DEV) 2653 max_tx_queue_size = min_t(uint32_t, max_tx_queue_size, 2654 llq->max_llq_depth); 2655 else 2656 max_tx_queue_size = min_t(uint32_t, max_tx_queue_size, 2657 max_queues->max_sq_depth); 2658 2659 ctx->max_tx_sgl_size = min_t(uint16_t, ENA_PKT_MAX_BUFS, 2660 max_queues->max_packet_tx_descs); 2661 ctx->max_rx_sgl_size = min_t(uint16_t, ENA_PKT_MAX_BUFS, 2662 max_queues->max_packet_rx_descs); 2663 } 2664 2665 /* round down to the nearest power of 2 */ 2666 max_tx_queue_size = 1 << (flsl(max_tx_queue_size) - 1); 2667 max_rx_queue_size = 1 << (flsl(max_rx_queue_size) - 1); 2668 2669 tx_queue_size = clamp_val(tx_queue_size, ENA_MIN_RING_SIZE, 2670 max_tx_queue_size); 2671 rx_queue_size = clamp_val(rx_queue_size, ENA_MIN_RING_SIZE, 2672 max_rx_queue_size); 2673 2674 tx_queue_size = 1 << (flsl(tx_queue_size) - 1); 2675 rx_queue_size = 1 << (flsl(rx_queue_size) - 1); 2676 2677 ctx->max_tx_queue_size = max_tx_queue_size; 2678 ctx->max_rx_queue_size = max_rx_queue_size; 2679 ctx->tx_queue_size = tx_queue_size; 2680 ctx->rx_queue_size = rx_queue_size; 2681 2682 return (0); 2683 } 2684 2685 static int 2686 ena_rss_init_default(struct ena_adapter *adapter) 2687 { 2688 struct ena_com_dev *ena_dev = adapter->ena_dev; 2689 device_t dev = adapter->pdev; 2690 int qid, rc, i; 2691 2692 rc = ena_com_rss_init(ena_dev, ENA_RX_RSS_TABLE_LOG_SIZE); 2693 if (unlikely(rc != 0)) { 2694 device_printf(dev, "Cannot init indirect table\n"); 2695 return (rc); 2696 } 2697 2698 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) { 2699 qid = i % adapter->num_io_queues; 2700 rc = ena_com_indirect_table_fill_entry(ena_dev, i, 2701 ENA_IO_RXQ_IDX(qid)); 2702 if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) { 2703 device_printf(dev, "Cannot fill indirect table\n"); 2704 goto err_rss_destroy; 2705 } 2706 } 2707 2708 #ifdef RSS 2709 uint8_t rss_algo = rss_gethashalgo(); 2710 if (rss_algo == RSS_HASH_TOEPLITZ) { 2711 uint8_t hash_key[RSS_KEYSIZE]; 2712 2713 rss_getkey(hash_key); 2714 rc = ena_com_fill_hash_function(ena_dev, ENA_ADMIN_TOEPLITZ, 2715 hash_key, RSS_KEYSIZE, 0xFFFFFFFF); 2716 } else 2717 #endif 2718 rc = ena_com_fill_hash_function(ena_dev, ENA_ADMIN_CRC32, NULL, 2719 ENA_HASH_KEY_SIZE, 0xFFFFFFFF); 2720 if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) { 2721 device_printf(dev, "Cannot fill hash function\n"); 2722 goto err_rss_destroy; 2723 } 2724 2725 rc = ena_com_set_default_hash_ctrl(ena_dev); 2726 if (unlikely((rc != 0) && (rc != EOPNOTSUPP))) { 2727 device_printf(dev, "Cannot fill hash control\n"); 2728 goto err_rss_destroy; 2729 } 2730 2731 return (0); 2732 2733 err_rss_destroy: 2734 ena_com_rss_destroy(ena_dev); 2735 return (rc); 2736 } 2737 2738 static void 2739 ena_rss_init_default_deferred(void *arg) 2740 { 2741 struct ena_adapter *adapter; 2742 devclass_t dc; 2743 int max; 2744 int rc; 2745 2746 dc = devclass_find("ena"); 2747 if (unlikely(dc == NULL)) { 2748 ena_trace(ENA_ALERT, "No devclass ena\n"); 2749 return; 2750 } 2751 2752 max = devclass_get_maxunit(dc); 2753 while (max-- >= 0) { 2754 adapter = devclass_get_softc(dc, max); 2755 if (adapter != NULL) { 2756 rc = ena_rss_init_default(adapter); 2757 ENA_FLAG_SET_ATOMIC(ENA_FLAG_RSS_ACTIVE, adapter); 2758 if (unlikely(rc != 0)) { 2759 device_printf(adapter->pdev, 2760 "WARNING: RSS was not properly initialized," 2761 " it will affect bandwidth\n"); 2762 ENA_FLAG_CLEAR_ATOMIC(ENA_FLAG_RSS_ACTIVE, adapter); 2763 } 2764 } 2765 } 2766 } 2767 SYSINIT(ena_rss_init, SI_SUB_KICK_SCHEDULER, SI_ORDER_SECOND, ena_rss_init_default_deferred, NULL); 2768 2769 static void 2770 ena_config_host_info(struct ena_com_dev *ena_dev, device_t dev) 2771 { 2772 struct ena_admin_host_info *host_info; 2773 uintptr_t rid; 2774 int rc; 2775 2776 /* Allocate only the host info */ 2777 rc = ena_com_allocate_host_info(ena_dev); 2778 if (unlikely(rc != 0)) { 2779 ena_trace(ENA_ALERT, "Cannot allocate host info\n"); 2780 return; 2781 } 2782 2783 host_info = ena_dev->host_attr.host_info; 2784 2785 if (pci_get_id(dev, PCI_ID_RID, &rid) == 0) 2786 host_info->bdf = rid; 2787 host_info->os_type = ENA_ADMIN_OS_FREEBSD; 2788 host_info->kernel_ver = osreldate; 2789 2790 sprintf(host_info->kernel_ver_str, "%d", osreldate); 2791 host_info->os_dist = 0; 2792 strncpy(host_info->os_dist_str, osrelease, 2793 sizeof(host_info->os_dist_str) - 1); 2794 2795 host_info->driver_version = 2796 (DRV_MODULE_VER_MAJOR) | 2797 (DRV_MODULE_VER_MINOR << ENA_ADMIN_HOST_INFO_MINOR_SHIFT) | 2798 (DRV_MODULE_VER_SUBMINOR << ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT); 2799 host_info->num_cpus = mp_ncpus; 2800 2801 rc = ena_com_set_host_attributes(ena_dev); 2802 if (unlikely(rc != 0)) { 2803 if (rc == EOPNOTSUPP) 2804 ena_trace(ENA_WARNING, "Cannot set host attributes\n"); 2805 else 2806 ena_trace(ENA_ALERT, "Cannot set host attributes\n"); 2807 2808 goto err; 2809 } 2810 2811 return; 2812 2813 err: 2814 ena_com_delete_host_info(ena_dev); 2815 } 2816 2817 static int 2818 ena_device_init(struct ena_adapter *adapter, device_t pdev, 2819 struct ena_com_dev_get_features_ctx *get_feat_ctx, int *wd_active) 2820 { 2821 struct ena_com_dev* ena_dev = adapter->ena_dev; 2822 bool readless_supported; 2823 uint32_t aenq_groups; 2824 int dma_width; 2825 int rc; 2826 2827 rc = ena_com_mmio_reg_read_request_init(ena_dev); 2828 if (unlikely(rc != 0)) { 2829 device_printf(pdev, "failed to init mmio read less\n"); 2830 return (rc); 2831 } 2832 2833 /* 2834 * The PCIe configuration space revision id indicate if mmio reg 2835 * read is disabled 2836 */ 2837 readless_supported = !(pci_get_revid(pdev) & ENA_MMIO_DISABLE_REG_READ); 2838 ena_com_set_mmio_read_mode(ena_dev, readless_supported); 2839 2840 rc = ena_com_dev_reset(ena_dev, ENA_REGS_RESET_NORMAL); 2841 if (unlikely(rc != 0)) { 2842 device_printf(pdev, "Can not reset device\n"); 2843 goto err_mmio_read_less; 2844 } 2845 2846 rc = ena_com_validate_version(ena_dev); 2847 if (unlikely(rc != 0)) { 2848 device_printf(pdev, "device version is too low\n"); 2849 goto err_mmio_read_less; 2850 } 2851 2852 dma_width = ena_com_get_dma_width(ena_dev); 2853 if (unlikely(dma_width < 0)) { 2854 device_printf(pdev, "Invalid dma width value %d", dma_width); 2855 rc = dma_width; 2856 goto err_mmio_read_less; 2857 } 2858 adapter->dma_width = dma_width; 2859 2860 /* ENA admin level init */ 2861 rc = ena_com_admin_init(ena_dev, &aenq_handlers); 2862 if (unlikely(rc != 0)) { 2863 device_printf(pdev, 2864 "Can not initialize ena admin queue with device\n"); 2865 goto err_mmio_read_less; 2866 } 2867 2868 /* 2869 * To enable the msix interrupts the driver needs to know the number 2870 * of queues. So the driver uses polling mode to retrieve this 2871 * information 2872 */ 2873 ena_com_set_admin_polling_mode(ena_dev, true); 2874 2875 ena_config_host_info(ena_dev, pdev); 2876 2877 /* Get Device Attributes */ 2878 rc = ena_com_get_dev_attr_feat(ena_dev, get_feat_ctx); 2879 if (unlikely(rc != 0)) { 2880 device_printf(pdev, 2881 "Cannot get attribute for ena device rc: %d\n", rc); 2882 goto err_admin_init; 2883 } 2884 2885 aenq_groups = BIT(ENA_ADMIN_LINK_CHANGE) | 2886 BIT(ENA_ADMIN_FATAL_ERROR) | 2887 BIT(ENA_ADMIN_WARNING) | 2888 BIT(ENA_ADMIN_NOTIFICATION) | 2889 BIT(ENA_ADMIN_KEEP_ALIVE); 2890 2891 aenq_groups &= get_feat_ctx->aenq.supported_groups; 2892 rc = ena_com_set_aenq_config(ena_dev, aenq_groups); 2893 if (unlikely(rc != 0)) { 2894 device_printf(pdev, "Cannot configure aenq groups rc: %d\n", rc); 2895 goto err_admin_init; 2896 } 2897 2898 *wd_active = !!(aenq_groups & BIT(ENA_ADMIN_KEEP_ALIVE)); 2899 2900 return (0); 2901 2902 err_admin_init: 2903 ena_com_delete_host_info(ena_dev); 2904 ena_com_admin_destroy(ena_dev); 2905 err_mmio_read_less: 2906 ena_com_mmio_reg_read_request_destroy(ena_dev); 2907 2908 return (rc); 2909 } 2910 2911 static int ena_enable_msix_and_set_admin_interrupts(struct ena_adapter *adapter) 2912 { 2913 struct ena_com_dev *ena_dev = adapter->ena_dev; 2914 int rc; 2915 2916 rc = ena_enable_msix(adapter); 2917 if (unlikely(rc != 0)) { 2918 device_printf(adapter->pdev, "Error with MSI-X enablement\n"); 2919 return (rc); 2920 } 2921 2922 ena_setup_mgmnt_intr(adapter); 2923 2924 rc = ena_request_mgmnt_irq(adapter); 2925 if (unlikely(rc != 0)) { 2926 device_printf(adapter->pdev, "Cannot setup mgmnt queue intr\n"); 2927 goto err_disable_msix; 2928 } 2929 2930 ena_com_set_admin_polling_mode(ena_dev, false); 2931 2932 ena_com_admin_aenq_enable(ena_dev); 2933 2934 return (0); 2935 2936 err_disable_msix: 2937 ena_disable_msix(adapter); 2938 2939 return (rc); 2940 } 2941 2942 /* Function called on ENA_ADMIN_KEEP_ALIVE event */ 2943 static void ena_keep_alive_wd(void *adapter_data, 2944 struct ena_admin_aenq_entry *aenq_e) 2945 { 2946 struct ena_adapter *adapter = (struct ena_adapter *)adapter_data; 2947 struct ena_admin_aenq_keep_alive_desc *desc; 2948 sbintime_t stime; 2949 uint64_t rx_drops; 2950 uint64_t tx_drops; 2951 2952 desc = (struct ena_admin_aenq_keep_alive_desc *)aenq_e; 2953 2954 rx_drops = ((uint64_t)desc->rx_drops_high << 32) | desc->rx_drops_low; 2955 tx_drops = ((uint64_t)desc->tx_drops_high << 32) | desc->tx_drops_low; 2956 counter_u64_zero(adapter->hw_stats.rx_drops); 2957 counter_u64_add(adapter->hw_stats.rx_drops, rx_drops); 2958 counter_u64_zero(adapter->hw_stats.tx_drops); 2959 counter_u64_add(adapter->hw_stats.tx_drops, tx_drops); 2960 2961 stime = getsbinuptime(); 2962 atomic_store_rel_64(&adapter->keep_alive_timestamp, stime); 2963 } 2964 2965 /* Check for keep alive expiration */ 2966 static void check_for_missing_keep_alive(struct ena_adapter *adapter) 2967 { 2968 sbintime_t timestamp, time; 2969 2970 if (adapter->wd_active == 0) 2971 return; 2972 2973 if (adapter->keep_alive_timeout == ENA_HW_HINTS_NO_TIMEOUT) 2974 return; 2975 2976 timestamp = atomic_load_acq_64(&adapter->keep_alive_timestamp); 2977 time = getsbinuptime() - timestamp; 2978 if (unlikely(time > adapter->keep_alive_timeout)) { 2979 device_printf(adapter->pdev, 2980 "Keep alive watchdog timeout.\n"); 2981 counter_u64_add(adapter->dev_stats.wd_expired, 1); 2982 ena_trigger_reset(adapter, ENA_REGS_RESET_KEEP_ALIVE_TO); 2983 } 2984 } 2985 2986 /* Check if admin queue is enabled */ 2987 static void check_for_admin_com_state(struct ena_adapter *adapter) 2988 { 2989 if (unlikely(ena_com_get_admin_running_state(adapter->ena_dev) == 2990 false)) { 2991 device_printf(adapter->pdev, 2992 "ENA admin queue is not in running state!\n"); 2993 counter_u64_add(adapter->dev_stats.admin_q_pause, 1); 2994 ena_trigger_reset(adapter, ENA_REGS_RESET_ADMIN_TO); 2995 } 2996 } 2997 2998 static int 2999 check_for_rx_interrupt_queue(struct ena_adapter *adapter, 3000 struct ena_ring *rx_ring) 3001 { 3002 if (likely(rx_ring->first_interrupt)) 3003 return (0); 3004 3005 if (ena_com_cq_empty(rx_ring->ena_com_io_cq)) 3006 return (0); 3007 3008 rx_ring->no_interrupt_event_cnt++; 3009 3010 if (rx_ring->no_interrupt_event_cnt == ENA_MAX_NO_INTERRUPT_ITERATIONS) { 3011 device_printf(adapter->pdev, "Potential MSIX issue on Rx side " 3012 "Queue = %d. Reset the device\n", rx_ring->qid); 3013 ena_trigger_reset(adapter, ENA_REGS_RESET_MISS_INTERRUPT); 3014 return (EIO); 3015 } 3016 3017 return (0); 3018 } 3019 3020 static int 3021 check_missing_comp_in_tx_queue(struct ena_adapter *adapter, 3022 struct ena_ring *tx_ring) 3023 { 3024 struct bintime curtime, time; 3025 struct ena_tx_buffer *tx_buf; 3026 sbintime_t time_offset; 3027 uint32_t missed_tx = 0; 3028 int i, rc = 0; 3029 3030 getbinuptime(&curtime); 3031 3032 for (i = 0; i < tx_ring->ring_size; i++) { 3033 tx_buf = &tx_ring->tx_buffer_info[i]; 3034 3035 if (bintime_isset(&tx_buf->timestamp) == 0) 3036 continue; 3037 3038 time = curtime; 3039 bintime_sub(&time, &tx_buf->timestamp); 3040 time_offset = bttosbt(time); 3041 3042 if (unlikely(!tx_ring->first_interrupt && 3043 time_offset > 2 * adapter->missing_tx_timeout)) { 3044 /* 3045 * If after graceful period interrupt is still not 3046 * received, we schedule a reset. 3047 */ 3048 device_printf(adapter->pdev, 3049 "Potential MSIX issue on Tx side Queue = %d. " 3050 "Reset the device\n", tx_ring->qid); 3051 ena_trigger_reset(adapter, 3052 ENA_REGS_RESET_MISS_INTERRUPT); 3053 return (EIO); 3054 } 3055 3056 /* Check again if packet is still waiting */ 3057 if (unlikely(time_offset > adapter->missing_tx_timeout)) { 3058 3059 if (!tx_buf->print_once) 3060 ena_trace(ENA_WARNING, "Found a Tx that wasn't " 3061 "completed on time, qid %d, index %d.\n", 3062 tx_ring->qid, i); 3063 3064 tx_buf->print_once = true; 3065 missed_tx++; 3066 } 3067 } 3068 3069 if (unlikely(missed_tx > adapter->missing_tx_threshold)) { 3070 device_printf(adapter->pdev, 3071 "The number of lost tx completion is above the threshold " 3072 "(%d > %d). Reset the device\n", 3073 missed_tx, adapter->missing_tx_threshold); 3074 ena_trigger_reset(adapter, ENA_REGS_RESET_MISS_TX_CMPL); 3075 rc = EIO; 3076 } 3077 3078 counter_u64_add(tx_ring->tx_stats.missing_tx_comp, missed_tx); 3079 3080 return (rc); 3081 } 3082 3083 /* 3084 * Check for TX which were not completed on time. 3085 * Timeout is defined by "missing_tx_timeout". 3086 * Reset will be performed if number of incompleted 3087 * transactions exceeds "missing_tx_threshold". 3088 */ 3089 static void 3090 check_for_missing_completions(struct ena_adapter *adapter) 3091 { 3092 struct ena_ring *tx_ring; 3093 struct ena_ring *rx_ring; 3094 int i, budget, rc; 3095 3096 /* Make sure the driver doesn't turn the device in other process */ 3097 rmb(); 3098 3099 if (!ENA_FLAG_ISSET(ENA_FLAG_DEV_UP, adapter)) 3100 return; 3101 3102 if (ENA_FLAG_ISSET(ENA_FLAG_TRIGGER_RESET, adapter)) 3103 return; 3104 3105 if (adapter->missing_tx_timeout == ENA_HW_HINTS_NO_TIMEOUT) 3106 return; 3107 3108 budget = adapter->missing_tx_max_queues; 3109 3110 for (i = adapter->next_monitored_tx_qid; i < adapter->num_io_queues; i++) { 3111 tx_ring = &adapter->tx_ring[i]; 3112 rx_ring = &adapter->rx_ring[i]; 3113 3114 rc = check_missing_comp_in_tx_queue(adapter, tx_ring); 3115 if (unlikely(rc != 0)) 3116 return; 3117 3118 rc = check_for_rx_interrupt_queue(adapter, rx_ring); 3119 if (unlikely(rc != 0)) 3120 return; 3121 3122 budget--; 3123 if (budget == 0) { 3124 i++; 3125 break; 3126 } 3127 } 3128 3129 adapter->next_monitored_tx_qid = i % adapter->num_io_queues; 3130 } 3131 3132 /* trigger rx cleanup after 2 consecutive detections */ 3133 #define EMPTY_RX_REFILL 2 3134 /* For the rare case where the device runs out of Rx descriptors and the 3135 * msix handler failed to refill new Rx descriptors (due to a lack of memory 3136 * for example). 3137 * This case will lead to a deadlock: 3138 * The device won't send interrupts since all the new Rx packets will be dropped 3139 * The msix handler won't allocate new Rx descriptors so the device won't be 3140 * able to send new packets. 3141 * 3142 * When such a situation is detected - execute rx cleanup task in another thread 3143 */ 3144 static void 3145 check_for_empty_rx_ring(struct ena_adapter *adapter) 3146 { 3147 struct ena_ring *rx_ring; 3148 int i, refill_required; 3149 3150 if (!ENA_FLAG_ISSET(ENA_FLAG_DEV_UP, adapter)) 3151 return; 3152 3153 if (ENA_FLAG_ISSET(ENA_FLAG_TRIGGER_RESET, adapter)) 3154 return; 3155 3156 for (i = 0; i < adapter->num_io_queues; i++) { 3157 rx_ring = &adapter->rx_ring[i]; 3158 3159 refill_required = ena_com_free_q_entries(rx_ring->ena_com_io_sq); 3160 if (unlikely(refill_required == (rx_ring->ring_size - 1))) { 3161 rx_ring->empty_rx_queue++; 3162 3163 if (rx_ring->empty_rx_queue >= EMPTY_RX_REFILL) { 3164 counter_u64_add(rx_ring->rx_stats.empty_rx_ring, 3165 1); 3166 3167 device_printf(adapter->pdev, 3168 "trigger refill for ring %d\n", i); 3169 3170 taskqueue_enqueue(rx_ring->que->cleanup_tq, 3171 &rx_ring->que->cleanup_task); 3172 rx_ring->empty_rx_queue = 0; 3173 } 3174 } else { 3175 rx_ring->empty_rx_queue = 0; 3176 } 3177 } 3178 } 3179 3180 static void ena_update_hints(struct ena_adapter *adapter, 3181 struct ena_admin_ena_hw_hints *hints) 3182 { 3183 struct ena_com_dev *ena_dev = adapter->ena_dev; 3184 3185 if (hints->admin_completion_tx_timeout) 3186 ena_dev->admin_queue.completion_timeout = 3187 hints->admin_completion_tx_timeout * 1000; 3188 3189 if (hints->mmio_read_timeout) 3190 /* convert to usec */ 3191 ena_dev->mmio_read.reg_read_to = 3192 hints->mmio_read_timeout * 1000; 3193 3194 if (hints->missed_tx_completion_count_threshold_to_reset) 3195 adapter->missing_tx_threshold = 3196 hints->missed_tx_completion_count_threshold_to_reset; 3197 3198 if (hints->missing_tx_completion_timeout) { 3199 if (hints->missing_tx_completion_timeout == 3200 ENA_HW_HINTS_NO_TIMEOUT) 3201 adapter->missing_tx_timeout = ENA_HW_HINTS_NO_TIMEOUT; 3202 else 3203 adapter->missing_tx_timeout = 3204 SBT_1MS * hints->missing_tx_completion_timeout; 3205 } 3206 3207 if (hints->driver_watchdog_timeout) { 3208 if (hints->driver_watchdog_timeout == ENA_HW_HINTS_NO_TIMEOUT) 3209 adapter->keep_alive_timeout = ENA_HW_HINTS_NO_TIMEOUT; 3210 else 3211 adapter->keep_alive_timeout = 3212 SBT_1MS * hints->driver_watchdog_timeout; 3213 } 3214 } 3215 3216 static void 3217 ena_timer_service(void *data) 3218 { 3219 struct ena_adapter *adapter = (struct ena_adapter *)data; 3220 struct ena_admin_host_info *host_info = 3221 adapter->ena_dev->host_attr.host_info; 3222 3223 check_for_missing_keep_alive(adapter); 3224 3225 check_for_admin_com_state(adapter); 3226 3227 check_for_missing_completions(adapter); 3228 3229 check_for_empty_rx_ring(adapter); 3230 3231 if (host_info != NULL) 3232 ena_update_host_info(host_info, adapter->ifp); 3233 3234 if (unlikely(ENA_FLAG_ISSET(ENA_FLAG_TRIGGER_RESET, adapter))) { 3235 device_printf(adapter->pdev, "Trigger reset is on\n"); 3236 taskqueue_enqueue(adapter->reset_tq, &adapter->reset_task); 3237 return; 3238 } 3239 3240 /* 3241 * Schedule another timeout one second from now. 3242 */ 3243 callout_schedule_sbt(&adapter->timer_service, SBT_1S, SBT_1S, 0); 3244 } 3245 3246 void 3247 ena_destroy_device(struct ena_adapter *adapter, bool graceful) 3248 { 3249 if_t ifp = adapter->ifp; 3250 struct ena_com_dev *ena_dev = adapter->ena_dev; 3251 bool dev_up; 3252 3253 if (!ENA_FLAG_ISSET(ENA_FLAG_DEVICE_RUNNING, adapter)) 3254 return; 3255 3256 if_link_state_change(ifp, LINK_STATE_DOWN); 3257 3258 callout_drain(&adapter->timer_service); 3259 3260 dev_up = ENA_FLAG_ISSET(ENA_FLAG_DEV_UP, adapter); 3261 if (dev_up) 3262 ENA_FLAG_SET_ATOMIC(ENA_FLAG_DEV_UP_BEFORE_RESET, adapter); 3263 3264 if (!graceful) 3265 ena_com_set_admin_running_state(ena_dev, false); 3266 3267 if (ENA_FLAG_ISSET(ENA_FLAG_DEV_UP, adapter)) 3268 ena_down(adapter); 3269 3270 /* 3271 * Stop the device from sending AENQ events (if the device was up, and 3272 * the trigger reset was on, ena_down already performs device reset) 3273 */ 3274 if (!(ENA_FLAG_ISSET(ENA_FLAG_TRIGGER_RESET, adapter) && dev_up)) 3275 ena_com_dev_reset(adapter->ena_dev, adapter->reset_reason); 3276 3277 ena_free_mgmnt_irq(adapter); 3278 3279 ena_disable_msix(adapter); 3280 3281 /* 3282 * IO rings resources should be freed because `ena_restore_device()` 3283 * calls (not directly) `ena_enable_msix()`, which re-allocates MSIX 3284 * vectors. The amount of MSIX vectors after destroy-restore may be 3285 * different than before. Therefore, IO rings resources should be 3286 * established from scratch each time. 3287 */ 3288 ena_free_all_io_rings_resources(adapter); 3289 3290 ena_com_abort_admin_commands(ena_dev); 3291 3292 ena_com_wait_for_abort_completion(ena_dev); 3293 3294 ena_com_admin_destroy(ena_dev); 3295 3296 ena_com_mmio_reg_read_request_destroy(ena_dev); 3297 3298 adapter->reset_reason = ENA_REGS_RESET_NORMAL; 3299 3300 ENA_FLAG_CLEAR_ATOMIC(ENA_FLAG_TRIGGER_RESET, adapter); 3301 ENA_FLAG_CLEAR_ATOMIC(ENA_FLAG_DEVICE_RUNNING, adapter); 3302 } 3303 3304 static int 3305 ena_device_validate_params(struct ena_adapter *adapter, 3306 struct ena_com_dev_get_features_ctx *get_feat_ctx) 3307 { 3308 3309 if (memcmp(get_feat_ctx->dev_attr.mac_addr, adapter->mac_addr, 3310 ETHER_ADDR_LEN) != 0) { 3311 device_printf(adapter->pdev, 3312 "Error, mac address are different\n"); 3313 return (EINVAL); 3314 } 3315 3316 if (get_feat_ctx->dev_attr.max_mtu < if_getmtu(adapter->ifp)) { 3317 device_printf(adapter->pdev, 3318 "Error, device max mtu is smaller than ifp MTU\n"); 3319 return (EINVAL); 3320 } 3321 3322 return 0; 3323 } 3324 3325 int 3326 ena_restore_device(struct ena_adapter *adapter) 3327 { 3328 struct ena_com_dev_get_features_ctx get_feat_ctx; 3329 struct ena_com_dev *ena_dev = adapter->ena_dev; 3330 if_t ifp = adapter->ifp; 3331 device_t dev = adapter->pdev; 3332 int wd_active; 3333 int rc; 3334 3335 ENA_FLAG_SET_ATOMIC(ENA_FLAG_ONGOING_RESET, adapter); 3336 3337 rc = ena_device_init(adapter, dev, &get_feat_ctx, &wd_active); 3338 if (rc != 0) { 3339 device_printf(dev, "Cannot initialize device\n"); 3340 goto err; 3341 } 3342 /* 3343 * Only enable WD if it was enabled before reset, so it won't override 3344 * value set by the user by the sysctl. 3345 */ 3346 if (adapter->wd_active != 0) 3347 adapter->wd_active = wd_active; 3348 3349 rc = ena_device_validate_params(adapter, &get_feat_ctx); 3350 if (rc != 0) { 3351 device_printf(dev, "Validation of device parameters failed\n"); 3352 goto err_device_destroy; 3353 } 3354 3355 ENA_FLAG_CLEAR_ATOMIC(ENA_FLAG_ONGOING_RESET, adapter); 3356 /* Make sure we don't have a race with AENQ Links state handler */ 3357 if (ENA_FLAG_ISSET(ENA_FLAG_LINK_UP, adapter)) 3358 if_link_state_change(ifp, LINK_STATE_UP); 3359 3360 rc = ena_enable_msix_and_set_admin_interrupts(adapter); 3361 if (rc != 0) { 3362 device_printf(dev, "Enable MSI-X failed\n"); 3363 goto err_device_destroy; 3364 } 3365 3366 /* 3367 * Effective value of used MSIX vectors should be the same as before 3368 * `ena_destroy_device()`, if possible, or closest to it if less vectors 3369 * are available. 3370 */ 3371 if ((adapter->msix_vecs - ENA_ADMIN_MSIX_VEC) < adapter->num_io_queues) 3372 adapter->num_io_queues = 3373 adapter->msix_vecs - ENA_ADMIN_MSIX_VEC; 3374 3375 /* Re-initialize rings basic information */ 3376 ena_init_io_rings(adapter); 3377 3378 /* If the interface was up before the reset bring it up */ 3379 if (ENA_FLAG_ISSET(ENA_FLAG_DEV_UP_BEFORE_RESET, adapter)) { 3380 rc = ena_up(adapter); 3381 if (rc != 0) { 3382 device_printf(dev, "Failed to create I/O queues\n"); 3383 goto err_disable_msix; 3384 } 3385 } 3386 3387 /* Indicate that device is running again and ready to work */ 3388 ENA_FLAG_SET_ATOMIC(ENA_FLAG_DEVICE_RUNNING, adapter); 3389 3390 if (ENA_FLAG_ISSET(ENA_FLAG_DEV_UP_BEFORE_RESET, adapter)) { 3391 /* 3392 * As the AENQ handlers weren't executed during reset because 3393 * the flag ENA_FLAG_DEVICE_RUNNING was turned off, the 3394 * timestamp must be updated again That will prevent next reset 3395 * caused by missing keep alive. 3396 */ 3397 adapter->keep_alive_timestamp = getsbinuptime(); 3398 callout_reset_sbt(&adapter->timer_service, SBT_1S, SBT_1S, 3399 ena_timer_service, (void *)adapter, 0); 3400 } 3401 ENA_FLAG_CLEAR_ATOMIC(ENA_FLAG_DEV_UP_BEFORE_RESET, adapter); 3402 3403 device_printf(dev, 3404 "Device reset completed successfully, Driver info: %s\n", ena_version); 3405 3406 return (rc); 3407 3408 err_disable_msix: 3409 ena_free_mgmnt_irq(adapter); 3410 ena_disable_msix(adapter); 3411 err_device_destroy: 3412 ena_com_abort_admin_commands(ena_dev); 3413 ena_com_wait_for_abort_completion(ena_dev); 3414 ena_com_admin_destroy(ena_dev); 3415 ena_com_dev_reset(ena_dev, ENA_REGS_RESET_DRIVER_INVALID_STATE); 3416 ena_com_mmio_reg_read_request_destroy(ena_dev); 3417 err: 3418 ENA_FLAG_CLEAR_ATOMIC(ENA_FLAG_DEVICE_RUNNING, adapter); 3419 ENA_FLAG_CLEAR_ATOMIC(ENA_FLAG_ONGOING_RESET, adapter); 3420 device_printf(dev, "Reset attempt failed. Can not reset the device\n"); 3421 3422 return (rc); 3423 } 3424 3425 static void 3426 ena_reset_task(void *arg, int pending) 3427 { 3428 struct ena_adapter *adapter = (struct ena_adapter *)arg; 3429 3430 if (unlikely(!ENA_FLAG_ISSET(ENA_FLAG_TRIGGER_RESET, adapter))) { 3431 device_printf(adapter->pdev, 3432 "device reset scheduled but trigger_reset is off\n"); 3433 return; 3434 } 3435 3436 ENA_LOCK_LOCK(adapter); 3437 ena_destroy_device(adapter, false); 3438 ena_restore_device(adapter); 3439 ENA_LOCK_UNLOCK(adapter); 3440 } 3441 3442 /** 3443 * ena_attach - Device Initialization Routine 3444 * @pdev: device information struct 3445 * 3446 * Returns 0 on success, otherwise on failure. 3447 * 3448 * ena_attach initializes an adapter identified by a device structure. 3449 * The OS initialization, configuring of the adapter private structure, 3450 * and a hardware reset occur. 3451 **/ 3452 static int 3453 ena_attach(device_t pdev) 3454 { 3455 struct ena_com_dev_get_features_ctx get_feat_ctx; 3456 struct ena_llq_configurations llq_config; 3457 struct ena_calc_queue_size_ctx calc_queue_ctx = { 0 }; 3458 static int version_printed; 3459 struct ena_adapter *adapter; 3460 struct ena_com_dev *ena_dev = NULL; 3461 uint32_t max_num_io_queues; 3462 int rid, rc; 3463 3464 adapter = device_get_softc(pdev); 3465 adapter->pdev = pdev; 3466 3467 ENA_LOCK_INIT(adapter); 3468 3469 /* 3470 * Set up the timer service - driver is responsible for avoiding 3471 * concurrency, as the callout won't be using any locking inside. 3472 */ 3473 callout_init(&adapter->timer_service, true); 3474 adapter->keep_alive_timeout = DEFAULT_KEEP_ALIVE_TO; 3475 adapter->missing_tx_timeout = DEFAULT_TX_CMP_TO; 3476 adapter->missing_tx_max_queues = DEFAULT_TX_MONITORED_QUEUES; 3477 adapter->missing_tx_threshold = DEFAULT_TX_CMP_THRESHOLD; 3478 3479 if (version_printed++ == 0) 3480 device_printf(pdev, "%s\n", ena_version); 3481 3482 /* Allocate memory for ena_dev structure */ 3483 ena_dev = malloc(sizeof(struct ena_com_dev), M_DEVBUF, 3484 M_WAITOK | M_ZERO); 3485 3486 adapter->ena_dev = ena_dev; 3487 ena_dev->dmadev = pdev; 3488 3489 rid = PCIR_BAR(ENA_REG_BAR); 3490 adapter->memory = NULL; 3491 adapter->registers = bus_alloc_resource_any(pdev, SYS_RES_MEMORY, 3492 &rid, RF_ACTIVE); 3493 if (unlikely(adapter->registers == NULL)) { 3494 device_printf(pdev, 3495 "unable to allocate bus resource: registers!\n"); 3496 rc = ENOMEM; 3497 goto err_dev_free; 3498 } 3499 3500 ena_dev->bus = malloc(sizeof(struct ena_bus), M_DEVBUF, 3501 M_WAITOK | M_ZERO); 3502 3503 /* Store register resources */ 3504 ((struct ena_bus*)(ena_dev->bus))->reg_bar_t = 3505 rman_get_bustag(adapter->registers); 3506 ((struct ena_bus*)(ena_dev->bus))->reg_bar_h = 3507 rman_get_bushandle(adapter->registers); 3508 3509 if (unlikely(((struct ena_bus*)(ena_dev->bus))->reg_bar_h == 0)) { 3510 device_printf(pdev, "failed to pmap registers bar\n"); 3511 rc = ENXIO; 3512 goto err_bus_free; 3513 } 3514 3515 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST; 3516 3517 /* Initially clear all the flags */ 3518 ENA_FLAG_ZERO(adapter); 3519 3520 /* Device initialization */ 3521 rc = ena_device_init(adapter, pdev, &get_feat_ctx, &adapter->wd_active); 3522 if (unlikely(rc != 0)) { 3523 device_printf(pdev, "ENA device init failed! (err: %d)\n", rc); 3524 rc = ENXIO; 3525 goto err_bus_free; 3526 } 3527 3528 set_default_llq_configurations(&llq_config); 3529 3530 rc = ena_set_queues_placement_policy(pdev, ena_dev, &get_feat_ctx.llq, 3531 &llq_config); 3532 if (unlikely(rc != 0)) { 3533 device_printf(pdev, "failed to set placement policy\n"); 3534 goto err_com_free; 3535 } 3536 3537 if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) 3538 adapter->disable_meta_caching = 3539 !!(get_feat_ctx.llq.accel_mode.u.get.supported_flags & 3540 BIT(ENA_ADMIN_DISABLE_META_CACHING)); 3541 3542 adapter->keep_alive_timestamp = getsbinuptime(); 3543 3544 adapter->tx_offload_cap = get_feat_ctx.offload.tx; 3545 3546 memcpy(adapter->mac_addr, get_feat_ctx.dev_attr.mac_addr, 3547 ETHER_ADDR_LEN); 3548 3549 calc_queue_ctx.pdev = pdev; 3550 calc_queue_ctx.ena_dev = ena_dev; 3551 calc_queue_ctx.get_feat_ctx = &get_feat_ctx; 3552 3553 /* Calculate initial and maximum IO queue number and size */ 3554 max_num_io_queues = ena_calc_max_io_queue_num(pdev, ena_dev, 3555 &get_feat_ctx); 3556 rc = ena_calc_io_queue_size(&calc_queue_ctx); 3557 if (unlikely((rc != 0) || (max_num_io_queues <= 0))) { 3558 rc = EFAULT; 3559 goto err_com_free; 3560 } 3561 3562 adapter->requested_tx_ring_size = calc_queue_ctx.tx_queue_size; 3563 adapter->requested_rx_ring_size = calc_queue_ctx.rx_queue_size; 3564 adapter->max_tx_ring_size = calc_queue_ctx.max_tx_queue_size; 3565 adapter->max_rx_ring_size = calc_queue_ctx.max_rx_queue_size; 3566 adapter->max_tx_sgl_size = calc_queue_ctx.max_tx_sgl_size; 3567 adapter->max_rx_sgl_size = calc_queue_ctx.max_rx_sgl_size; 3568 3569 adapter->max_num_io_queues = max_num_io_queues; 3570 3571 adapter->buf_ring_size = ENA_DEFAULT_BUF_RING_SIZE; 3572 3573 adapter->max_mtu = get_feat_ctx.dev_attr.max_mtu; 3574 3575 adapter->reset_reason = ENA_REGS_RESET_NORMAL; 3576 3577 /* set up dma tags for rx and tx buffers */ 3578 rc = ena_setup_tx_dma_tag(adapter); 3579 if (unlikely(rc != 0)) { 3580 device_printf(pdev, "Failed to create TX DMA tag\n"); 3581 goto err_com_free; 3582 } 3583 3584 rc = ena_setup_rx_dma_tag(adapter); 3585 if (unlikely(rc != 0)) { 3586 device_printf(pdev, "Failed to create RX DMA tag\n"); 3587 goto err_tx_tag_free; 3588 } 3589 3590 /* 3591 * The amount of requested MSIX vectors is equal to 3592 * adapter::max_num_io_queues (see `ena_enable_msix()`), plus a constant 3593 * number of admin queue interrupts. The former is initially determined 3594 * by HW capabilities (see `ena_calc_max_io_queue_num())` but may not be 3595 * achieved if there are not enough system resources. By default, the 3596 * number of effectively used IO queues is the same but later on it can 3597 * be limited by the user using sysctl interface. 3598 */ 3599 rc = ena_enable_msix_and_set_admin_interrupts(adapter); 3600 if (unlikely(rc != 0)) { 3601 device_printf(pdev, 3602 "Failed to enable and set the admin interrupts\n"); 3603 goto err_io_free; 3604 } 3605 /* By default all of allocated MSIX vectors are actively used */ 3606 adapter->num_io_queues = adapter->msix_vecs - ENA_ADMIN_MSIX_VEC; 3607 3608 /* initialize rings basic information */ 3609 ena_init_io_rings(adapter); 3610 3611 /* setup network interface */ 3612 rc = ena_setup_ifnet(pdev, adapter, &get_feat_ctx); 3613 if (unlikely(rc != 0)) { 3614 device_printf(pdev, "Error with network interface setup\n"); 3615 goto err_msix_free; 3616 } 3617 3618 /* Initialize reset task queue */ 3619 TASK_INIT(&adapter->reset_task, 0, ena_reset_task, adapter); 3620 adapter->reset_tq = taskqueue_create("ena_reset_enqueue", 3621 M_WAITOK | M_ZERO, taskqueue_thread_enqueue, &adapter->reset_tq); 3622 taskqueue_start_threads(&adapter->reset_tq, 1, PI_NET, 3623 "%s rstq", device_get_nameunit(adapter->pdev)); 3624 3625 /* Initialize statistics */ 3626 ena_alloc_counters((counter_u64_t *)&adapter->dev_stats, 3627 sizeof(struct ena_stats_dev)); 3628 ena_alloc_counters((counter_u64_t *)&adapter->hw_stats, 3629 sizeof(struct ena_hw_stats)); 3630 ena_sysctl_add_nodes(adapter); 3631 3632 #ifdef DEV_NETMAP 3633 rc = ena_netmap_attach(adapter); 3634 if (rc != 0) { 3635 device_printf(pdev, "netmap attach failed: %d\n", rc); 3636 goto err_detach; 3637 } 3638 #endif /* DEV_NETMAP */ 3639 3640 /* Tell the stack that the interface is not active */ 3641 if_setdrvflagbits(adapter->ifp, IFF_DRV_OACTIVE, IFF_DRV_RUNNING); 3642 ENA_FLAG_SET_ATOMIC(ENA_FLAG_DEVICE_RUNNING, adapter); 3643 3644 return (0); 3645 3646 #ifdef DEV_NETMAP 3647 err_detach: 3648 ether_ifdetach(adapter->ifp); 3649 #endif /* DEV_NETMAP */ 3650 err_msix_free: 3651 ena_com_dev_reset(adapter->ena_dev, ENA_REGS_RESET_INIT_ERR); 3652 ena_free_mgmnt_irq(adapter); 3653 ena_disable_msix(adapter); 3654 err_io_free: 3655 ena_free_all_io_rings_resources(adapter); 3656 ena_free_rx_dma_tag(adapter); 3657 err_tx_tag_free: 3658 ena_free_tx_dma_tag(adapter); 3659 err_com_free: 3660 ena_com_admin_destroy(ena_dev); 3661 ena_com_delete_host_info(ena_dev); 3662 ena_com_mmio_reg_read_request_destroy(ena_dev); 3663 err_bus_free: 3664 free(ena_dev->bus, M_DEVBUF); 3665 ena_free_pci_resources(adapter); 3666 err_dev_free: 3667 free(ena_dev, M_DEVBUF); 3668 3669 return (rc); 3670 } 3671 3672 /** 3673 * ena_detach - Device Removal Routine 3674 * @pdev: device information struct 3675 * 3676 * ena_detach is called by the device subsystem to alert the driver 3677 * that it should release a PCI device. 3678 **/ 3679 static int 3680 ena_detach(device_t pdev) 3681 { 3682 struct ena_adapter *adapter = device_get_softc(pdev); 3683 struct ena_com_dev *ena_dev = adapter->ena_dev; 3684 int rc; 3685 3686 /* Make sure VLANS are not using driver */ 3687 if (adapter->ifp->if_vlantrunk != NULL) { 3688 device_printf(adapter->pdev ,"VLAN is in use, detach first\n"); 3689 return (EBUSY); 3690 } 3691 3692 ether_ifdetach(adapter->ifp); 3693 3694 /* Stop timer service */ 3695 ENA_LOCK_LOCK(adapter); 3696 callout_drain(&adapter->timer_service); 3697 ENA_LOCK_UNLOCK(adapter); 3698 3699 /* Release reset task */ 3700 while (taskqueue_cancel(adapter->reset_tq, &adapter->reset_task, NULL)) 3701 taskqueue_drain(adapter->reset_tq, &adapter->reset_task); 3702 taskqueue_free(adapter->reset_tq); 3703 3704 ENA_LOCK_LOCK(adapter); 3705 ena_down(adapter); 3706 ena_destroy_device(adapter, true); 3707 ENA_LOCK_UNLOCK(adapter); 3708 3709 #ifdef DEV_NETMAP 3710 netmap_detach(adapter->ifp); 3711 #endif /* DEV_NETMAP */ 3712 3713 ena_free_counters((counter_u64_t *)&adapter->hw_stats, 3714 sizeof(struct ena_hw_stats)); 3715 ena_free_counters((counter_u64_t *)&adapter->dev_stats, 3716 sizeof(struct ena_stats_dev)); 3717 3718 rc = ena_free_rx_dma_tag(adapter); 3719 if (unlikely(rc != 0)) 3720 device_printf(adapter->pdev, 3721 "Unmapped RX DMA tag associations\n"); 3722 3723 rc = ena_free_tx_dma_tag(adapter); 3724 if (unlikely(rc != 0)) 3725 device_printf(adapter->pdev, 3726 "Unmapped TX DMA tag associations\n"); 3727 3728 ena_free_irqs(adapter); 3729 3730 ena_free_pci_resources(adapter); 3731 3732 if (likely(ENA_FLAG_ISSET(ENA_FLAG_RSS_ACTIVE, adapter))) 3733 ena_com_rss_destroy(ena_dev); 3734 3735 ena_com_delete_host_info(ena_dev); 3736 3737 ENA_LOCK_DESTROY(adapter); 3738 3739 if_free(adapter->ifp); 3740 3741 if (ena_dev->bus != NULL) 3742 free(ena_dev->bus, M_DEVBUF); 3743 3744 if (ena_dev != NULL) 3745 free(ena_dev, M_DEVBUF); 3746 3747 return (bus_generic_detach(pdev)); 3748 } 3749 3750 /****************************************************************************** 3751 ******************************** AENQ Handlers ******************************* 3752 *****************************************************************************/ 3753 /** 3754 * ena_update_on_link_change: 3755 * Notify the network interface about the change in link status 3756 **/ 3757 static void 3758 ena_update_on_link_change(void *adapter_data, 3759 struct ena_admin_aenq_entry *aenq_e) 3760 { 3761 struct ena_adapter *adapter = (struct ena_adapter *)adapter_data; 3762 struct ena_admin_aenq_link_change_desc *aenq_desc; 3763 int status; 3764 if_t ifp; 3765 3766 aenq_desc = (struct ena_admin_aenq_link_change_desc *)aenq_e; 3767 ifp = adapter->ifp; 3768 status = aenq_desc->flags & 3769 ENA_ADMIN_AENQ_LINK_CHANGE_DESC_LINK_STATUS_MASK; 3770 3771 if (status != 0) { 3772 device_printf(adapter->pdev, "link is UP\n"); 3773 ENA_FLAG_SET_ATOMIC(ENA_FLAG_LINK_UP, adapter); 3774 if (!ENA_FLAG_ISSET(ENA_FLAG_ONGOING_RESET, adapter)) 3775 if_link_state_change(ifp, LINK_STATE_UP); 3776 } else { 3777 device_printf(adapter->pdev, "link is DOWN\n"); 3778 if_link_state_change(ifp, LINK_STATE_DOWN); 3779 ENA_FLAG_CLEAR_ATOMIC(ENA_FLAG_LINK_UP, adapter); 3780 } 3781 } 3782 3783 static void ena_notification(void *adapter_data, 3784 struct ena_admin_aenq_entry *aenq_e) 3785 { 3786 struct ena_adapter *adapter = (struct ena_adapter *)adapter_data; 3787 struct ena_admin_ena_hw_hints *hints; 3788 3789 ENA_WARN(aenq_e->aenq_common_desc.group != ENA_ADMIN_NOTIFICATION, 3790 "Invalid group(%x) expected %x\n", aenq_e->aenq_common_desc.group, 3791 ENA_ADMIN_NOTIFICATION); 3792 3793 switch (aenq_e->aenq_common_desc.syndrom) { 3794 case ENA_ADMIN_UPDATE_HINTS: 3795 hints = 3796 (struct ena_admin_ena_hw_hints *)(&aenq_e->inline_data_w4); 3797 ena_update_hints(adapter, hints); 3798 break; 3799 default: 3800 device_printf(adapter->pdev, 3801 "Invalid aenq notification link state %d\n", 3802 aenq_e->aenq_common_desc.syndrom); 3803 } 3804 } 3805 3806 /** 3807 * This handler will called for unknown event group or unimplemented handlers 3808 **/ 3809 static void 3810 unimplemented_aenq_handler(void *adapter_data, 3811 struct ena_admin_aenq_entry *aenq_e) 3812 { 3813 struct ena_adapter *adapter = (struct ena_adapter *)adapter_data; 3814 3815 device_printf(adapter->pdev, 3816 "Unknown event was received or event with unimplemented handler\n"); 3817 } 3818 3819 static struct ena_aenq_handlers aenq_handlers = { 3820 .handlers = { 3821 [ENA_ADMIN_LINK_CHANGE] = ena_update_on_link_change, 3822 [ENA_ADMIN_NOTIFICATION] = ena_notification, 3823 [ENA_ADMIN_KEEP_ALIVE] = ena_keep_alive_wd, 3824 }, 3825 .unimplemented_handler = unimplemented_aenq_handler 3826 }; 3827 3828 /********************************************************************* 3829 * FreeBSD Device Interface Entry Points 3830 *********************************************************************/ 3831 3832 static device_method_t ena_methods[] = { 3833 /* Device interface */ 3834 DEVMETHOD(device_probe, ena_probe), 3835 DEVMETHOD(device_attach, ena_attach), 3836 DEVMETHOD(device_detach, ena_detach), 3837 DEVMETHOD_END 3838 }; 3839 3840 static driver_t ena_driver = { 3841 "ena", ena_methods, sizeof(struct ena_adapter), 3842 }; 3843 3844 devclass_t ena_devclass; 3845 DRIVER_MODULE(ena, pci, ena_driver, ena_devclass, 0, 0); 3846 MODULE_PNP_INFO("U16:vendor;U16:device", pci, ena, ena_vendor_info_array, 3847 nitems(ena_vendor_info_array) - 1); 3848 MODULE_DEPEND(ena, pci, 1, 1, 1); 3849 MODULE_DEPEND(ena, ether, 1, 1, 1); 3850 #ifdef DEV_NETMAP 3851 MODULE_DEPEND(ena, netmap, 1, 1, 1); 3852 #endif /* DEV_NETMAP */ 3853 3854 /*********************************************************************/ 3855