ena.c revision 338692
1/*- 2 * BSD LICENSE 3 * 4 * Copyright (c) 2015-2017 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: stable/11/sys/dev/ena/ena.c 338692 2018-09-15 09:03:50Z mw $"); 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/bus.h> 36#include <sys/endian.h> 37#include <sys/kernel.h> 38#include <sys/kthread.h> 39#include <sys/malloc.h> 40#include <sys/mbuf.h> 41#include <sys/module.h> 42#include <sys/rman.h> 43#include <sys/smp.h> 44#include <sys/socket.h> 45#include <sys/sockio.h> 46#include <sys/sysctl.h> 47#include <sys/taskqueue.h> 48#include <sys/time.h> 49#include <sys/eventhandler.h> 50 51#include <machine/bus.h> 52#include <machine/resource.h> 53#include <machine/in_cksum.h> 54 55#include <net/bpf.h> 56#include <net/ethernet.h> 57#include <net/if.h> 58#include <net/if_var.h> 59#include <net/if_arp.h> 60#include <net/if_dl.h> 61#include <net/if_media.h> 62#include <net/rss_config.h> 63#include <net/if_types.h> 64#include <net/if_vlan_var.h> 65 66#include <netinet/in_rss.h> 67#include <netinet/in_systm.h> 68#include <netinet/in.h> 69#include <netinet/if_ether.h> 70#include <netinet/ip.h> 71#include <netinet/ip6.h> 72#include <netinet/tcp.h> 73#include <netinet/udp.h> 74 75#include <dev/pci/pcivar.h> 76#include <dev/pci/pcireg.h> 77 78#include "ena.h" 79#include "ena_sysctl.h" 80 81/********************************************************* 82 * Function prototypes 83 *********************************************************/ 84static int ena_probe(device_t); 85static void ena_intr_msix_mgmnt(void *); 86static int ena_allocate_pci_resources(struct ena_adapter*); 87static void ena_free_pci_resources(struct ena_adapter *); 88static int ena_change_mtu(if_t, int); 89static inline void ena_alloc_counters(counter_u64_t *, int); 90static inline void ena_free_counters(counter_u64_t *, int); 91static inline void ena_reset_counters(counter_u64_t *, int); 92static void ena_init_io_rings_common(struct ena_adapter *, 93 struct ena_ring *, uint16_t); 94static int ena_init_io_rings(struct ena_adapter *); 95static void ena_free_io_ring_resources(struct ena_adapter *, unsigned int); 96static void ena_free_all_io_rings_resources(struct ena_adapter *); 97static int ena_setup_tx_dma_tag(struct ena_adapter *); 98static int ena_free_tx_dma_tag(struct ena_adapter *); 99static int ena_setup_rx_dma_tag(struct ena_adapter *); 100static int ena_free_rx_dma_tag(struct ena_adapter *); 101static int ena_setup_tx_resources(struct ena_adapter *, int); 102static void ena_free_tx_resources(struct ena_adapter *, int); 103static int ena_setup_all_tx_resources(struct ena_adapter *); 104static void ena_free_all_tx_resources(struct ena_adapter *); 105static int ena_setup_rx_resources(struct ena_adapter *, unsigned int); 106static void ena_free_rx_resources(struct ena_adapter *, unsigned int); 107static int ena_setup_all_rx_resources(struct ena_adapter *); 108static void ena_free_all_rx_resources(struct ena_adapter *); 109static inline int ena_alloc_rx_mbuf(struct ena_adapter *, struct ena_ring *, 110 struct ena_rx_buffer *); 111static void ena_free_rx_mbuf(struct ena_adapter *, struct ena_ring *, 112 struct ena_rx_buffer *); 113static int ena_refill_rx_bufs(struct ena_ring *, uint32_t); 114static void ena_free_rx_bufs(struct ena_adapter *, unsigned int); 115static void ena_refill_all_rx_bufs(struct ena_adapter *); 116static void ena_free_all_rx_bufs(struct ena_adapter *); 117static void ena_free_tx_bufs(struct ena_adapter *, unsigned int); 118static void ena_free_all_tx_bufs(struct ena_adapter *); 119static void ena_destroy_all_tx_queues(struct ena_adapter *); 120static void ena_destroy_all_rx_queues(struct ena_adapter *); 121static void ena_destroy_all_io_queues(struct ena_adapter *); 122static int ena_create_io_queues(struct ena_adapter *); 123static int ena_tx_cleanup(struct ena_ring *); 124static int ena_rx_cleanup(struct ena_ring *); 125static int validate_tx_req_id(struct ena_ring *, uint16_t); 126static void ena_rx_hash_mbuf(struct ena_ring *, struct ena_com_rx_ctx *, 127 struct mbuf *); 128static struct mbuf* ena_rx_mbuf(struct ena_ring *, struct ena_com_rx_buf_info *, 129 struct ena_com_rx_ctx *, uint16_t *); 130static inline void ena_rx_checksum(struct ena_ring *, struct ena_com_rx_ctx *, 131 struct mbuf *); 132static void ena_handle_msix(void *); 133static int ena_enable_msix(struct ena_adapter *); 134static void ena_setup_mgmnt_intr(struct ena_adapter *); 135static void ena_setup_io_intr(struct ena_adapter *); 136static int ena_request_mgmnt_irq(struct ena_adapter *); 137static int ena_request_io_irq(struct ena_adapter *); 138static void ena_free_mgmnt_irq(struct ena_adapter *); 139static void ena_free_io_irq(struct ena_adapter *); 140static void ena_free_irqs(struct ena_adapter*); 141static void ena_disable_msix(struct ena_adapter *); 142static void ena_unmask_all_io_irqs(struct ena_adapter *); 143static int ena_rss_configure(struct ena_adapter *); 144static void ena_update_hw_stats(void *, int); 145static int ena_up_complete(struct ena_adapter *); 146static int ena_up(struct ena_adapter *); 147static void ena_down(struct ena_adapter *); 148static uint64_t ena_get_counter(if_t, ift_counter); 149static int ena_media_change(if_t); 150static void ena_media_status(if_t, struct ifmediareq *); 151static void ena_init(void *); 152static int ena_ioctl(if_t, u_long, caddr_t); 153static int ena_get_dev_offloads(struct ena_com_dev_get_features_ctx *); 154static void ena_update_host_info(struct ena_admin_host_info *, if_t); 155static void ena_update_hwassist(struct ena_adapter *); 156static int ena_setup_ifnet(device_t, struct ena_adapter *, 157 struct ena_com_dev_get_features_ctx *); 158static void ena_tx_csum(struct ena_com_tx_ctx *, struct mbuf *); 159static int ena_check_and_collapse_mbuf(struct ena_ring *tx_ring, 160 struct mbuf **mbuf); 161static int ena_xmit_mbuf(struct ena_ring *, struct mbuf **); 162static void ena_start_xmit(struct ena_ring *); 163static int ena_mq_start(if_t, struct mbuf *); 164static void ena_deferred_mq_start(void *, int); 165static void ena_qflush(if_t); 166static int ena_calc_io_queue_num(struct ena_adapter *, 167 struct ena_com_dev_get_features_ctx *); 168static int ena_calc_queue_size(struct ena_adapter *, uint16_t *, 169 uint16_t *, struct ena_com_dev_get_features_ctx *); 170static int ena_rss_init_default(struct ena_adapter *); 171static void ena_rss_init_default_deferred(void *); 172static void ena_config_host_info(struct ena_com_dev *); 173static int ena_attach(device_t); 174static int ena_detach(device_t); 175static int ena_device_init(struct ena_adapter *, device_t, 176 struct ena_com_dev_get_features_ctx *, int *); 177static int ena_enable_msix_and_set_admin_interrupts(struct ena_adapter *, 178 int); 179static void ena_update_on_link_change(void *, struct ena_admin_aenq_entry *); 180static void unimplemented_aenq_handler(void *, 181 struct ena_admin_aenq_entry *); 182static void ena_timer_service(void *); 183 184static char ena_version[] = DEVICE_NAME DRV_MODULE_NAME " v" DRV_MODULE_VERSION; 185 186static SYSCTL_NODE(_hw, OID_AUTO, ena, CTLFLAG_RD, 0, "ENA driver parameters"); 187 188/* 189 * Tuneable number of buffers in the buf-ring (drbr) 190 */ 191static int ena_buf_ring_size = 4096; 192SYSCTL_INT(_hw_ena, OID_AUTO, buf_ring_size, CTLFLAG_RWTUN, 193 &ena_buf_ring_size, 0, "Size of the bufring"); 194 195 196static ena_vendor_info_t ena_vendor_info_array[] = { 197 { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_PF, 0}, 198 { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_LLQ_PF, 0}, 199 { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_VF, 0}, 200 { PCI_VENDOR_ID_AMAZON, PCI_DEV_ID_ENA_LLQ_VF, 0}, 201 /* Last entry */ 202 { 0, 0, 0 } 203}; 204 205/* 206 * Contains pointers to event handlers, e.g. link state chage. 207 */ 208static struct ena_aenq_handlers aenq_handlers; 209 210void 211ena_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nseg, int error) 212{ 213 if (error) 214 return; 215 *(bus_addr_t *) arg = segs[0].ds_addr; 216 return; 217} 218 219int 220ena_dma_alloc(device_t dmadev, bus_size_t size, 221 ena_mem_handle_t *dma , int mapflags) 222{ 223 struct ena_adapter* adapter = device_get_softc(dmadev); 224 uint32_t maxsize = ((size - 1)/PAGE_SIZE + 1) * PAGE_SIZE; 225 uint64_t dma_space_addr = ENA_DMA_BIT_MASK(adapter->dma_width); 226 int error; 227 228 if (dma_space_addr == 0) 229 dma_space_addr = BUS_SPACE_MAXADDR; 230 error = bus_dma_tag_create(bus_get_dma_tag(dmadev), /* parent */ 231 8, 0, /* alignment, bounds */ 232 dma_space_addr, /* lowaddr of exclusion window */ 233 BUS_SPACE_MAXADDR,/* highaddr of exclusion window */ 234 NULL, NULL, /* filter, filterarg */ 235 maxsize, /* maxsize */ 236 1, /* nsegments */ 237 maxsize, /* maxsegsize */ 238 BUS_DMA_ALLOCNOW, /* flags */ 239 NULL, /* lockfunc */ 240 NULL, /* lockarg */ 241 &dma->tag); 242 if (error) { 243 device_printf(dmadev, 244 "%s: bus_dma_tag_create failed: %d\n", 245 __func__, error); 246 goto fail_tag; 247 } 248 249 error = bus_dmamem_alloc(dma->tag, (void**) &dma->vaddr, 250 BUS_DMA_COHERENT | BUS_DMA_ZERO, &dma->map); 251 if (error) { 252 device_printf(dmadev, 253 "%s: bus_dmamem_alloc(%ju) failed: %d\n", 254 __func__, (uintmax_t)size, error); 255 goto fail_map_create; 256 } 257 258 dma->paddr = 0; 259 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, 260 size, ena_dmamap_callback, &dma->paddr, mapflags); 261 if (error || dma->paddr == 0) { 262 device_printf(dmadev, 263 "%s: bus_dmamap_load failed: %d\n", 264 __func__, error); 265 goto fail_map_load; 266 } 267 268 return (0); 269 270fail_map_load: 271 bus_dmamap_unload(dma->tag, dma->map); 272fail_map_create: 273 bus_dmamem_free(dma->tag, dma->vaddr, dma->map); 274 bus_dma_tag_destroy(dma->tag); 275fail_tag: 276 dma->tag = NULL; 277 278 return (error); 279} 280 281static int 282ena_allocate_pci_resources(struct ena_adapter* adapter) 283{ 284 device_t pdev = adapter->pdev; 285 int rid; 286 287 rid = PCIR_BAR(ENA_REG_BAR); 288 adapter->memory = NULL; 289 adapter->registers = bus_alloc_resource_any(pdev, SYS_RES_MEMORY, 290 &rid, RF_ACTIVE); 291 if (adapter->registers == NULL) { 292 device_printf(pdev, "Unable to allocate bus resource: " 293 "registers\n"); 294 return (ENXIO); 295 } 296 297 return (0); 298} 299 300static void 301ena_free_pci_resources(struct ena_adapter *adapter) 302{ 303 device_t pdev = adapter->pdev; 304 305 if (adapter->memory != NULL) { 306 bus_release_resource(pdev, SYS_RES_MEMORY, 307 PCIR_BAR(ENA_MEM_BAR), adapter->memory); 308 } 309 310 if (adapter->registers != NULL) { 311 bus_release_resource(pdev, SYS_RES_MEMORY, 312 PCIR_BAR(ENA_REG_BAR), adapter->registers); 313 } 314 315 return; 316} 317 318static int 319ena_probe(device_t dev) 320{ 321 ena_vendor_info_t *ent; 322 char adapter_name[60]; 323 uint16_t pci_vendor_id = 0; 324 uint16_t pci_device_id = 0; 325 326 pci_vendor_id = pci_get_vendor(dev); 327 pci_device_id = pci_get_device(dev); 328 329 ent = ena_vendor_info_array; 330 while (ent->vendor_id != 0) { 331 if ((pci_vendor_id == ent->vendor_id) && 332 (pci_device_id == ent->device_id)) { 333 ena_trace(ENA_DBG, "vendor=%x device=%x ", 334 pci_vendor_id, pci_device_id); 335 336 sprintf(adapter_name, DEVICE_DESC); 337 device_set_desc_copy(dev, adapter_name); 338 return (BUS_PROBE_DEFAULT); 339 } 340 341 ent++; 342 343 } 344 345 return (ENXIO); 346} 347 348static int 349ena_change_mtu(if_t ifp, int new_mtu) 350{ 351 struct ena_adapter *adapter = if_getsoftc(ifp); 352 struct ena_com_dev_get_features_ctx get_feat_ctx; 353 int rc, old_mtu, max_frame; 354 355 rc = ena_com_get_dev_attr_feat(adapter->ena_dev, &get_feat_ctx); 356 if (rc) { 357 device_printf(adapter->pdev, 358 "Cannot get attribute for ena device\n"); 359 return (ENXIO); 360 } 361 362 /* Save old MTU in case of fail */ 363 old_mtu = if_getmtu(ifp); 364 365 /* Change MTU and calculate max frame */ 366 if_setmtu(ifp, new_mtu); 367 max_frame = ETHER_MAX_FRAME(ifp, ETHERTYPE_VLAN, 1); 368 369 if ((new_mtu < ENA_MIN_FRAME_LEN) || 370 (new_mtu > get_feat_ctx.dev_attr.max_mtu) || 371 (max_frame > ENA_MAX_FRAME_LEN)) { 372 device_printf(adapter->pdev, "Invalid MTU setting. " 373 "new_mtu: %d\n", new_mtu); 374 goto error; 375 } 376 377 rc = ena_com_set_dev_mtu(adapter->ena_dev, new_mtu); 378 if (rc != 0) 379 goto error; 380 381 return (0); 382error: 383 if_setmtu(ifp, old_mtu); 384 return (EINVAL); 385} 386 387static inline void 388ena_alloc_counters(counter_u64_t *begin, int size) 389{ 390 counter_u64_t *end = (counter_u64_t *)((char *)begin + size); 391 392 for (; begin < end; ++begin) 393 *begin = counter_u64_alloc(M_WAITOK); 394} 395 396static inline void 397ena_free_counters(counter_u64_t *begin, int size) 398{ 399 counter_u64_t *end = (counter_u64_t *)((char *)begin + size); 400 401 for (; begin < end; ++begin) 402 counter_u64_free(*begin); 403} 404 405static inline void 406ena_reset_counters(counter_u64_t *begin, int size) 407{ 408 counter_u64_t *end = (counter_u64_t *)((char *)begin + size); 409 410 for (; begin < end; ++begin) 411 counter_u64_zero(*begin); 412} 413 414static void 415ena_init_io_rings_common(struct ena_adapter *adapter, struct ena_ring *ring, 416 uint16_t qid) 417{ 418 419 ring->qid = qid; 420 ring->adapter = adapter; 421 ring->ena_dev = adapter->ena_dev; 422} 423 424static int 425ena_init_io_rings(struct ena_adapter *adapter) 426{ 427 struct ena_com_dev *ena_dev; 428 struct ena_ring *txr, *rxr; 429 struct ena_que *que; 430 int i; 431 int rc; 432 433 ena_dev = adapter->ena_dev; 434 435 for (i = 0; i < adapter->num_queues; i++) { 436 txr = &adapter->tx_ring[i]; 437 rxr = &adapter->rx_ring[i]; 438 439 /* TX/RX common ring state */ 440 ena_init_io_rings_common(adapter, txr, i); 441 ena_init_io_rings_common(adapter, rxr, i); 442 443 /* TX specific ring state */ 444 txr->ring_size = adapter->tx_ring_size; 445 txr->tx_max_header_size = ena_dev->tx_max_header_size; 446 txr->tx_mem_queue_type = ena_dev->tx_mem_queue_type; 447 txr->smoothed_interval = 448 ena_com_get_nonadaptive_moderation_interval_tx(ena_dev); 449 450 /* Allocate a buf ring */ 451 txr->br = buf_ring_alloc(ena_buf_ring_size, M_DEVBUF, 452 M_WAITOK, &txr->ring_mtx); 453 if (txr->br == NULL) { 454 device_printf(adapter->pdev, 455 "Error while setting up bufring\n"); 456 rc = ENOMEM; 457 goto err_bufr_free; 458 } 459 460 /* Alloc TX statistics. */ 461 ena_alloc_counters((counter_u64_t *)&txr->tx_stats, 462 sizeof(txr->tx_stats)); 463 464 /* RX specific ring state */ 465 rxr->ring_size = adapter->rx_ring_size; 466 rxr->rx_small_copy_len = adapter->small_copy_len; 467 rxr->smoothed_interval = 468 ena_com_get_nonadaptive_moderation_interval_rx(ena_dev); 469 470 /* Alloc RX statistics. */ 471 ena_alloc_counters((counter_u64_t *)&rxr->rx_stats, 472 sizeof(rxr->rx_stats)); 473 474 /* Initialize locks */ 475 snprintf(txr->mtx_name, nitems(txr->mtx_name), "%s:tx(%d)", 476 device_get_nameunit(adapter->pdev), i); 477 snprintf(rxr->mtx_name, nitems(rxr->mtx_name), "%s:rx(%d)", 478 device_get_nameunit(adapter->pdev), i); 479 480 mtx_init(&txr->ring_mtx, txr->mtx_name, NULL, MTX_DEF); 481 482 que = &adapter->que[i]; 483 que->adapter = adapter; 484 que->id = i; 485 que->tx_ring = txr; 486 que->rx_ring = rxr; 487 488 txr->que = que; 489 rxr->que = que; 490 } 491 492 return 0; 493 494err_bufr_free: 495 while (i--) 496 ena_free_io_ring_resources(adapter, i); 497 498 return (rc); 499} 500 501static void 502ena_free_io_ring_resources(struct ena_adapter *adapter, unsigned int qid) 503{ 504 struct ena_ring *txr = &adapter->tx_ring[qid]; 505 struct ena_ring *rxr = &adapter->rx_ring[qid]; 506 507 ena_free_counters((counter_u64_t *)&txr->tx_stats, 508 sizeof(txr->tx_stats)); 509 ena_free_counters((counter_u64_t *)&rxr->rx_stats, 510 sizeof(rxr->rx_stats)); 511 512 mtx_destroy(&txr->ring_mtx); 513 514 drbr_free(txr->br, M_DEVBUF); 515 516} 517 518static void 519ena_free_all_io_rings_resources(struct ena_adapter *adapter) 520{ 521 int i; 522 523 for (i = 0; i < adapter->num_queues; i++) 524 ena_free_io_ring_resources(adapter, i); 525 526} 527 528static int 529ena_setup_tx_dma_tag(struct ena_adapter *adapter) 530{ 531 int ret; 532 533 /* Create DMA tag for Tx buffers */ 534 ret = bus_dma_tag_create(bus_get_dma_tag(adapter->pdev), 535 1, 0, /* alignment, bounds */ 536 ENA_DMA_BIT_MASK(adapter->dma_width), /* lowaddr of excl window */ 537 BUS_SPACE_MAXADDR, /* highaddr of excl window */ 538 NULL, NULL, /* filter, filterarg */ 539 ENA_TSO_MAXSIZE, /* maxsize */ 540 adapter->max_tx_sgl_size - 1, /* nsegments */ 541 ENA_TSO_MAXSIZE, /* maxsegsize */ 542 0, /* flags */ 543 NULL, /* lockfunc */ 544 NULL, /* lockfuncarg */ 545 &adapter->tx_buf_tag); 546 547 if (ret != 0) 548 device_printf(adapter->pdev, "Unable to create Tx DMA tag\n"); 549 550 return (ret); 551} 552 553static int 554ena_free_tx_dma_tag(struct ena_adapter *adapter) 555{ 556 int ret; 557 558 ret = bus_dma_tag_destroy(adapter->tx_buf_tag); 559 560 if (ret == 0) 561 adapter->tx_buf_tag = NULL; 562 563 return (ret); 564} 565 566static int 567ena_setup_rx_dma_tag(struct ena_adapter *adapter) 568{ 569 int ret; 570 571 /* Create DMA tag for Rx buffers*/ 572 ret = bus_dma_tag_create(bus_get_dma_tag(adapter->pdev), /* parent */ 573 1, 0, /* alignment, bounds */ 574 ENA_DMA_BIT_MASK(adapter->dma_width), /* lowaddr of excl window */ 575 BUS_SPACE_MAXADDR, /* highaddr of excl window */ 576 NULL, NULL, /* filter, filterarg */ 577 MJUM16BYTES, /* maxsize */ 578 1, /* nsegments */ 579 MJUM16BYTES, /* maxsegsize */ 580 0, /* flags */ 581 NULL, /* lockfunc */ 582 NULL, /* lockarg */ 583 &adapter->rx_buf_tag); 584 585 if (ret != 0) 586 device_printf(adapter->pdev, "Unable to create Rx DMA tag\n"); 587 588 return (ret); 589} 590 591static int 592ena_free_rx_dma_tag(struct ena_adapter *adapter) 593{ 594 int ret; 595 596 ret = bus_dma_tag_destroy(adapter->rx_buf_tag); 597 598 if (ret == 0) 599 adapter->rx_buf_tag = NULL; 600 601 return (ret); 602} 603 604 605/** 606 * ena_setup_tx_resources - allocate Tx resources (Descriptors) 607 * @adapter: network interface device structure 608 * @qid: queue index 609 * 610 * Returns 0 on success, otherwise on failure. 611 **/ 612static int 613ena_setup_tx_resources(struct ena_adapter *adapter, int qid) 614{ 615 struct ena_que *que = &adapter->que[qid]; 616 struct ena_ring *tx_ring = que->tx_ring; 617 int size, i, err; 618#ifdef RSS 619 cpuset_t cpu_mask; 620#endif 621 622 size = sizeof(struct ena_tx_buffer) * tx_ring->ring_size; 623 624 tx_ring->tx_buffer_info = malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO); 625 if (!tx_ring->tx_buffer_info) 626 goto err_tx_buffer_info; 627 628 size = sizeof(uint16_t) * tx_ring->ring_size; 629 tx_ring->free_tx_ids = malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO); 630 if (!tx_ring->free_tx_ids) 631 goto err_tx_reqs; 632 633 /* Req id stack for TX OOO completions */ 634 for (i = 0; i < tx_ring->ring_size; i++) 635 tx_ring->free_tx_ids[i] = i; 636 637 /* Reset TX statistics. */ 638 ena_reset_counters((counter_u64_t *)&tx_ring->tx_stats, 639 sizeof(tx_ring->tx_stats)); 640 641 tx_ring->next_to_use = 0; 642 tx_ring->next_to_clean = 0; 643 644 /* Make sure that drbr is empty */ 645 ENA_RING_MTX_LOCK(tx_ring); 646 drbr_flush(adapter->ifp, tx_ring->br); 647 ENA_RING_MTX_UNLOCK(tx_ring); 648 649 /* ... and create the buffer DMA maps */ 650 for (i = 0; i < tx_ring->ring_size; i++) { 651 err = bus_dmamap_create(adapter->tx_buf_tag, 0, 652 &tx_ring->tx_buffer_info[i].map); 653 if (err != 0) { 654 device_printf(adapter->pdev, 655 "Unable to create Tx DMA map for buffer %d\n", i); 656 goto err_tx_map; 657 } 658 } 659 660 /* Allocate taskqueues */ 661 TASK_INIT(&tx_ring->enqueue_task, 0, ena_deferred_mq_start, tx_ring); 662 tx_ring->enqueue_tq = taskqueue_create_fast("ena_tx_enque", M_NOWAIT, 663 taskqueue_thread_enqueue, &tx_ring->enqueue_tq); 664 if (tx_ring->enqueue_tq == NULL) { 665 device_printf(adapter->pdev, 666 "Unable to create taskqueue for enqueue task\n"); 667 i = tx_ring->ring_size; 668 goto err_tx_map; 669 } 670 671 /* RSS set cpu for thread */ 672#ifdef RSS 673 CPU_SETOF(que->cpu, &cpu_mask); 674 taskqueue_start_threads_cpuset(&tx_ring->enqueue_tq, 1, PI_NET, 675 &cpu_mask, "%s tx_ring enq (bucket %d)", 676 device_get_nameunit(adapter->pdev), que->cpu); 677#else /* RSS */ 678 taskqueue_start_threads(&tx_ring->enqueue_tq, 1, PI_NET, 679 "%s txeq %d", device_get_nameunit(adapter->pdev), que->cpu); 680#endif /* RSS */ 681 682 return (0); 683 684err_tx_map: 685 while (i--) { 686 bus_dmamap_destroy(adapter->tx_buf_tag, 687 tx_ring->tx_buffer_info[i].map); 688 } 689 ENA_MEM_FREE(adapter->ena_dev->dmadev, tx_ring->free_tx_ids); 690err_tx_reqs: 691 ENA_MEM_FREE(adapter->ena_dev->dmadev, tx_ring->tx_buffer_info); 692err_tx_buffer_info: 693 return (ENOMEM); 694} 695 696/** 697 * ena_free_tx_resources - Free Tx Resources per Queue 698 * @adapter: network interface device structure 699 * @qid: queue index 700 * 701 * Free all transmit software resources 702 **/ 703static void 704ena_free_tx_resources(struct ena_adapter *adapter, int qid) 705{ 706 struct ena_ring *tx_ring = &adapter->tx_ring[qid]; 707 708 while (taskqueue_cancel(tx_ring->enqueue_tq, &tx_ring->enqueue_task, 709 NULL)) 710 taskqueue_drain(tx_ring->enqueue_tq, &tx_ring->enqueue_task); 711 712 taskqueue_free(tx_ring->enqueue_tq); 713 714 ENA_RING_MTX_LOCK(tx_ring); 715 /* Flush buffer ring, */ 716 drbr_flush(adapter->ifp, tx_ring->br); 717 718 /* Free buffer DMA maps, */ 719 for (int i = 0; i < tx_ring->ring_size; i++) { 720 m_freem(tx_ring->tx_buffer_info[i].mbuf); 721 tx_ring->tx_buffer_info[i].mbuf = NULL; 722 bus_dmamap_unload(adapter->tx_buf_tag, 723 tx_ring->tx_buffer_info[i].map); 724 bus_dmamap_destroy(adapter->tx_buf_tag, 725 tx_ring->tx_buffer_info[i].map); 726 } 727 ENA_RING_MTX_UNLOCK(tx_ring); 728 729 /* And free allocated memory. */ 730 ENA_MEM_FREE(adapter->ena_dev->dmadev, tx_ring->tx_buffer_info); 731 tx_ring->tx_buffer_info = NULL; 732 733 ENA_MEM_FREE(adapter->ena_dev->dmadev, tx_ring->free_tx_ids); 734 tx_ring->free_tx_ids = NULL; 735} 736 737/** 738 * ena_setup_all_tx_resources - allocate all queues Tx resources 739 * @adapter: network interface device structure 740 * 741 * Returns 0 on success, otherwise on failure. 742 **/ 743static int 744ena_setup_all_tx_resources(struct ena_adapter *adapter) 745{ 746 int i, rc; 747 748 for (i = 0; i < adapter->num_queues; i++) { 749 rc = ena_setup_tx_resources(adapter, i); 750 if (!rc) 751 continue; 752 753 device_printf(adapter->pdev, 754 "Allocation for Tx Queue %u failed\n", i); 755 goto err_setup_tx; 756 } 757 758 return (0); 759 760err_setup_tx: 761 /* Rewind the index freeing the rings as we go */ 762 while (i--) 763 ena_free_tx_resources(adapter, i); 764 return (rc); 765} 766 767/** 768 * ena_free_all_tx_resources - Free Tx Resources for All Queues 769 * @adapter: network interface device structure 770 * 771 * Free all transmit software resources 772 **/ 773static void 774ena_free_all_tx_resources(struct ena_adapter *adapter) 775{ 776 int i; 777 778 for (i = 0; i < adapter->num_queues; i++) 779 ena_free_tx_resources(adapter, i); 780 781 return; 782} 783 784/** 785 * ena_setup_rx_resources - allocate Rx resources (Descriptors) 786 * @adapter: network interface device structure 787 * @qid: queue index 788 * 789 * Returns 0 on success, otherwise on failure. 790 **/ 791static int 792ena_setup_rx_resources(struct ena_adapter *adapter, unsigned int qid) 793{ 794 struct ena_que *que = &adapter->que[qid]; 795 struct ena_ring *rx_ring = que->rx_ring; 796 int size, err, i; 797#ifdef RSS 798 cpuset_t cpu_mask; 799#endif 800 801 size = sizeof(struct ena_rx_buffer) * rx_ring->ring_size; 802 803 /* 804 * Alloc extra element so in rx path 805 * we can always prefetch rx_info + 1 806 */ 807 size += sizeof(struct ena_rx_buffer); 808 809 rx_ring->rx_buffer_info = ENA_MEM_ALLOC(adapter->ena_dev->dmadev, size); 810 if (!rx_ring->rx_buffer_info) 811 return (ENOMEM); 812 813 /* Reset RX statistics. */ 814 ena_reset_counters((counter_u64_t *)&rx_ring->rx_stats, 815 sizeof(rx_ring->rx_stats)); 816 817 rx_ring->next_to_clean = 0; 818 rx_ring->next_to_use = 0; 819 820 /* ... and create the buffer DMA maps */ 821 for (i = 0; i < rx_ring->ring_size; i++) { 822 err = bus_dmamap_create(adapter->rx_buf_tag, 0, 823 &(rx_ring->rx_buffer_info[i].map)); 824 if (err != 0) { 825 device_printf(adapter->pdev, 826 "Unable to create Rx DMA map for buffer %d\n", i); 827 goto err_rx_dma; 828 } 829 } 830 831 /* Create LRO for the ring */ 832 if (adapter->ifp->if_capenable & IFCAP_LRO) { 833 int err = tcp_lro_init(&rx_ring->lro); 834 if (err) { 835 device_printf(adapter->pdev, 836 "LRO[%d] Initialization failed!\n", qid); 837 } else { 838 ena_trace(ENA_INFO, 839 "RX Soft LRO[%d] Initialized\n", qid); 840 rx_ring->lro.ifp = adapter->ifp; 841 } 842 } 843 844 return (0); 845 846err_rx_dma: 847 while (i--) { 848 bus_dmamap_destroy(adapter->rx_buf_tag, 849 rx_ring->rx_buffer_info[i].map); 850 } 851 852 ENA_MEM_FREE(adapter->ena_dev->dmadev, rx_ring->rx_buffer_info); 853 rx_ring->rx_buffer_info = NULL; 854 ena_trace(ENA_ALERT, "RX resource allocation fail"); 855 return (ENOMEM); 856} 857 858/** 859 * ena_free_rx_resources - Free Rx Resources 860 * @adapter: network interface device structure 861 * @qid: queue index 862 * 863 * Free all receive software resources 864 **/ 865static void 866ena_free_rx_resources(struct ena_adapter *adapter, unsigned int qid) 867{ 868 struct ena_ring *rx_ring = &adapter->rx_ring[qid]; 869 870 ena_trace(ENA_INFO, "%s qid %d\n", __func__, qid); 871 872 /* Free buffer DMA maps, */ 873 for (int i = 0; i < rx_ring->ring_size; i++) { 874 m_freem(rx_ring->rx_buffer_info[i].mbuf); 875 rx_ring->rx_buffer_info[i].mbuf = NULL; 876 bus_dmamap_unload(adapter->rx_buf_tag, 877 rx_ring->rx_buffer_info[i].map); 878 bus_dmamap_destroy(adapter->rx_buf_tag, 879 rx_ring->rx_buffer_info[i].map); 880 } 881 882 /* free LRO resources, */ 883 tcp_lro_free(&rx_ring->lro); 884 885 /* free allocated memory */ 886 ENA_MEM_FREE(adapter->ena_dev->dmadev, rx_ring->rx_buffer_info); 887 rx_ring->rx_buffer_info = NULL; 888 889 return; 890} 891 892/** 893 * ena_setup_all_rx_resources - allocate all queues Rx resources 894 * @adapter: network interface device structure 895 * 896 * Returns 0 on success, otherwise on failure. 897 **/ 898static int 899ena_setup_all_rx_resources(struct ena_adapter *adapter) 900{ 901 int i, rc = 0; 902 903 for (i = 0; i < adapter->num_queues; i++) { 904 rc = ena_setup_rx_resources(adapter, i); 905 if (!rc) 906 continue; 907 908 device_printf(adapter->pdev, 909 "Allocation for Rx Queue %u failed\n", i); 910 goto err_setup_rx; 911 } 912 return (0); 913 914err_setup_rx: 915 /* rewind the index freeing the rings as we go */ 916 while (i--) 917 ena_free_rx_resources(adapter, i); 918 return (rc); 919} 920 921/** 922 * ena_free_all_rx_resources - Free Rx resources for all queues 923 * @adapter: network interface device structure 924 * 925 * Free all receive software resources 926 **/ 927static void 928ena_free_all_rx_resources(struct ena_adapter *adapter) 929{ 930 int i; 931 932 for (i = 0; i < adapter->num_queues; i++) 933 ena_free_rx_resources(adapter, i); 934 935 return; 936} 937 938static inline int 939ena_alloc_rx_mbuf(struct ena_adapter *adapter, 940 struct ena_ring *rx_ring, struct ena_rx_buffer *rx_info) 941{ 942 struct ena_com_buf *ena_buf; 943 bus_dma_segment_t segs[1]; 944 int nsegs, error; 945 946 /* if previous allocated frag is not used */ 947 if (rx_info->mbuf != NULL) 948 return (0); 949 950 /* Get mbuf using UMA allocator */ 951 rx_info->mbuf = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, MJUM16BYTES); 952 953 if (!rx_info->mbuf) { 954 counter_u64_add(rx_ring->rx_stats.mbuf_alloc_fail, 1); 955 return (ENOMEM); 956 } 957 /* Set mbuf length*/ 958 rx_info->mbuf->m_pkthdr.len = rx_info->mbuf->m_len = MJUM16BYTES; 959 960 /* Map packets for DMA */ 961 ena_trace(ENA_DBG | ENA_RSC | ENA_RXPTH, 962 "Using tag %p for buffers' DMA mapping, mbuf %p len: %d", 963 adapter->rx_buf_tag,rx_info->mbuf, rx_info->mbuf->m_len); 964 error = bus_dmamap_load_mbuf_sg(adapter->rx_buf_tag, rx_info->map, 965 rx_info->mbuf, segs, &nsegs, BUS_DMA_NOWAIT); 966 if (error || (nsegs != 1)) { 967 device_printf(adapter->pdev, "failed to map mbuf, error: %d, " 968 "nsegs: %d\n", error, nsegs); 969 counter_u64_add(rx_ring->rx_stats.dma_mapping_err, 1); 970 goto exit; 971 972 } 973 974 bus_dmamap_sync(adapter->rx_buf_tag, rx_info->map, BUS_DMASYNC_PREREAD); 975 976 ena_buf = &rx_info->ena_buf; 977 ena_buf->paddr = segs[0].ds_addr; 978 ena_buf->len = MJUM16BYTES; 979 980 ena_trace(ENA_DBG | ENA_RSC | ENA_RXPTH, 981 "ALLOC RX BUF: mbuf %p, rx_info %p, len %d, paddr %#jx\n", 982 rx_info->mbuf, rx_info,ena_buf->len, (uintmax_t)ena_buf->paddr); 983 984 return (0); 985 986exit: 987 m_freem(rx_info->mbuf); 988 rx_info->mbuf = NULL; 989 return (EFAULT); 990} 991 992static void 993ena_free_rx_mbuf(struct ena_adapter *adapter, struct ena_ring *rx_ring, 994 struct ena_rx_buffer *rx_info) 995{ 996 997 if (!rx_info->mbuf) 998 return; 999 1000 bus_dmamap_unload(adapter->rx_buf_tag, rx_info->map); 1001 m_freem(rx_info->mbuf); 1002 rx_info->mbuf = NULL; 1003 1004 return; 1005} 1006 1007 1008/** 1009 * ena_refill_rx_bufs - Refills ring with descriptors 1010 * @rx_ring: the ring which we want to feed with free descriptors 1011 * @num: number of descriptors to refill 1012 * Refills the ring with newly allocated DMA-mapped mbufs for receiving 1013 **/ 1014static int 1015ena_refill_rx_bufs(struct ena_ring *rx_ring, uint32_t num) 1016{ 1017 struct ena_adapter *adapter = rx_ring->adapter; 1018 uint16_t next_to_use; 1019 uint32_t i; 1020 int rc; 1021 1022 ena_trace(ENA_DBG | ENA_RXPTH | ENA_RSC, "refill qid: %d", 1023 rx_ring->qid); 1024 1025 next_to_use = rx_ring->next_to_use; 1026 1027 for (i = 0; i < num; i++) { 1028 ena_trace(ENA_DBG | ENA_RXPTH | ENA_RSC, 1029 "RX buffer - next to use: %d", next_to_use); 1030 1031 struct ena_rx_buffer *rx_info = 1032 &rx_ring->rx_buffer_info[next_to_use]; 1033 1034 rc = ena_alloc_rx_mbuf(adapter, rx_ring, rx_info); 1035 if (rc < 0) { 1036 device_printf(adapter->pdev, 1037 "failed to alloc buffer for rx queue\n"); 1038 break; 1039 } 1040 rc = ena_com_add_single_rx_desc(rx_ring->ena_com_io_sq, 1041 &rx_info->ena_buf, next_to_use); 1042 if (unlikely(rc)) { 1043 device_printf(adapter->pdev, 1044 "failed to add buffer for rx queue %d\n", 1045 rx_ring->qid); 1046 break; 1047 } 1048 next_to_use = ENA_RX_RING_IDX_NEXT(next_to_use, 1049 rx_ring->ring_size); 1050 } 1051 1052 if (i < num) { 1053 counter_u64_add(rx_ring->rx_stats.refil_partial, 1); 1054 device_printf(adapter->pdev, 1055 "refilled rx queue %d with %d pages only\n", 1056 rx_ring->qid, i); 1057 } 1058 1059 if (i != 0) { 1060 wmb(); 1061 ena_com_write_sq_doorbell(rx_ring->ena_com_io_sq); 1062 } 1063 rx_ring->next_to_use = next_to_use; 1064 return (i); 1065} 1066 1067static void 1068ena_free_rx_bufs(struct ena_adapter *adapter, unsigned int qid) 1069{ 1070 struct ena_ring *rx_ring = &adapter->rx_ring[qid]; 1071 unsigned int i; 1072 1073 for (i = 0; i < rx_ring->ring_size; i++) { 1074 struct ena_rx_buffer *rx_info = &rx_ring->rx_buffer_info[i]; 1075 1076 if (rx_info->mbuf) 1077 ena_free_rx_mbuf(adapter, rx_ring, rx_info); 1078 } 1079 1080 return; 1081} 1082 1083/** 1084 * ena_refill_all_rx_bufs - allocate all queues Rx buffers 1085 * @adapter: network interface device structure 1086 * 1087 */ 1088static void 1089ena_refill_all_rx_bufs(struct ena_adapter *adapter) 1090{ 1091 struct ena_ring *rx_ring; 1092 int i, rc, bufs_num; 1093 1094 for (i = 0; i < adapter->num_queues; i++) { 1095 rx_ring = &adapter->rx_ring[i]; 1096 bufs_num = rx_ring->ring_size - 1; 1097 rc = ena_refill_rx_bufs(rx_ring, bufs_num); 1098 1099 if (unlikely(rc != bufs_num)) 1100 device_printf(adapter->pdev, 1101 "refilling Queue %d failed. allocated %d buffers" 1102 " from: %d\n", i, rc, bufs_num); 1103 } 1104} 1105 1106static void 1107ena_free_all_rx_bufs(struct ena_adapter *adapter) 1108{ 1109 int i; 1110 1111 for (i = 0; i < adapter->num_queues; i++) 1112 ena_free_rx_bufs(adapter, i); 1113 return; 1114} 1115 1116/** 1117 * ena_free_tx_bufs - Free Tx Buffers per Queue 1118 * @adapter: network interface device structure 1119 * @qid: queue index 1120 **/ 1121static void 1122ena_free_tx_bufs(struct ena_adapter *adapter, unsigned int qid) 1123{ 1124 struct ena_ring *tx_ring = &adapter->tx_ring[qid]; 1125 1126 ENA_RING_MTX_LOCK(tx_ring); 1127 for (int i = 0; i < tx_ring->ring_size; i++) { 1128 struct ena_tx_buffer *tx_info = &tx_ring->tx_buffer_info[i]; 1129 1130 if (tx_info->mbuf == NULL) 1131 continue; 1132 1133 ena_trace(ENA_DBG | ENA_TXPTH | ENA_RSC, 1134 "free uncompleted Tx mbufs qid[%d] idx: 0x%x", qid, i); 1135 1136 bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map); 1137 m_free(tx_info->mbuf); 1138 tx_info->mbuf = NULL; 1139 } 1140 ENA_RING_MTX_UNLOCK(tx_ring); 1141 1142 return; 1143} 1144 1145static void 1146ena_free_all_tx_bufs(struct ena_adapter *adapter) 1147{ 1148 1149 for (int i = 0; i < adapter->num_queues; i++) 1150 ena_free_tx_bufs(adapter, i); 1151 1152 return; 1153} 1154 1155static void 1156ena_destroy_all_tx_queues(struct ena_adapter *adapter) 1157{ 1158 uint16_t ena_qid; 1159 int i; 1160 1161 for (i = 0; i < adapter->num_queues; i++) { 1162 ena_qid = ENA_IO_TXQ_IDX(i); 1163 ena_com_destroy_io_queue(adapter->ena_dev, ena_qid); 1164 } 1165} 1166 1167static void 1168ena_destroy_all_rx_queues(struct ena_adapter *adapter) 1169{ 1170 uint16_t ena_qid; 1171 int i; 1172 1173 for (i = 0; i < adapter->num_queues; i++) { 1174 ena_qid = ENA_IO_RXQ_IDX(i); 1175 ena_com_destroy_io_queue(adapter->ena_dev, ena_qid); 1176 } 1177} 1178 1179static void 1180ena_destroy_all_io_queues(struct ena_adapter *adapter) 1181{ 1182 ena_destroy_all_tx_queues(adapter); 1183 ena_destroy_all_rx_queues(adapter); 1184} 1185 1186static int 1187validate_tx_req_id(struct ena_ring *tx_ring, uint16_t req_id) 1188{ 1189 struct ena_tx_buffer *tx_info = NULL; 1190 1191 if (likely(req_id < tx_ring->ring_size)) { 1192 tx_info = &tx_ring->tx_buffer_info[req_id]; 1193 if (tx_info->mbuf) 1194 return 0; 1195 } 1196 1197 counter_u64_add(tx_ring->tx_stats.bad_req_id, 1); 1198 1199 return (EFAULT); 1200} 1201 1202static int 1203ena_create_io_queues(struct ena_adapter *adapter) 1204{ 1205 struct ena_com_dev *ena_dev = adapter->ena_dev; 1206 struct ena_com_create_io_ctx ctx; 1207 struct ena_ring *ring; 1208 uint16_t ena_qid; 1209 uint32_t msix_vector; 1210 int rc, i; 1211 1212 /* Create TX queues */ 1213 for (i = 0; i < adapter->num_queues; i++) { 1214 msix_vector = ENA_IO_IRQ_IDX(i); 1215 ena_qid = ENA_IO_TXQ_IDX(i); 1216 ctx.mem_queue_type = ena_dev->tx_mem_queue_type; 1217 ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_TX; 1218 ctx.queue_size = adapter->tx_ring_size; 1219 ctx.msix_vector = msix_vector; 1220 ctx.qid = ena_qid; 1221 rc = ena_com_create_io_queue(ena_dev, &ctx); 1222 if (rc) { 1223 device_printf(adapter->pdev, 1224 "Failed to create io TX queue #%d rc: %d\n", i, rc); 1225 goto err_tx; 1226 } 1227 ring = &adapter->tx_ring[i]; 1228 rc = ena_com_get_io_handlers(ena_dev, ena_qid, 1229 &ring->ena_com_io_sq, 1230 &ring->ena_com_io_cq); 1231 if (rc) { 1232 device_printf(adapter->pdev, 1233 "Failed to get TX queue handlers. TX queue num" 1234 " %d rc: %d\n", i, rc); 1235 ena_com_destroy_io_queue(ena_dev, ena_qid); 1236 goto err_tx; 1237 } 1238 } 1239 1240 /* Create RX queues */ 1241 for (i = 0; i < adapter->num_queues; i++) { 1242 msix_vector = ENA_IO_IRQ_IDX(i); 1243 ena_qid = ENA_IO_RXQ_IDX(i); 1244 ctx.mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST; 1245 ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_RX; 1246 ctx.queue_size = adapter->rx_ring_size; 1247 ctx.msix_vector = msix_vector; 1248 ctx.qid = ena_qid; 1249 rc = ena_com_create_io_queue(ena_dev, &ctx); 1250 if (rc) { 1251 device_printf(adapter->pdev, 1252 "Failed to create io RX queue[%d] rc: %d\n", i, rc); 1253 goto err_rx; 1254 } 1255 1256 ring = &adapter->rx_ring[i]; 1257 rc = ena_com_get_io_handlers(ena_dev, ena_qid, 1258 &ring->ena_com_io_sq, 1259 &ring->ena_com_io_cq); 1260 if (rc) { 1261 device_printf(adapter->pdev, 1262 "Failed to get RX queue handlers. RX queue num" 1263 " %d rc: %d\n", i, rc); 1264 ena_com_destroy_io_queue(ena_dev, ena_qid); 1265 goto err_rx; 1266 } 1267 } 1268 1269 return (0); 1270 1271err_rx: 1272 while (i--) 1273 ena_com_destroy_io_queue(ena_dev, ENA_IO_RXQ_IDX(i)); 1274 i = adapter->num_queues; 1275err_tx: 1276 while (i--) 1277 ena_com_destroy_io_queue(ena_dev, ENA_IO_TXQ_IDX(i)); 1278 1279 return (ENXIO); 1280} 1281 1282/** 1283 * ena_tx_cleanup - clear sent packets and corresponding descriptors 1284 * @tx_ring: ring for which we want to clean packets 1285 * 1286 * Once packets are sent, we ask the device in a loop for no longer used 1287 * descriptors. We find the related mbuf chain in a map (index in an array) 1288 * and free it, then update ring state. 1289 * This is performed in "endless" loop, updating ring pointers every 1290 * TX_COMMIT. The first check of free descriptor is performed before the actual 1291 * loop, then repeated at the loop end. 1292 **/ 1293static int 1294ena_tx_cleanup(struct ena_ring *tx_ring) 1295{ 1296 struct ena_adapter *adapter; 1297 struct ena_com_io_cq* io_cq; 1298 uint16_t next_to_clean; 1299 uint16_t req_id; 1300 uint16_t ena_qid; 1301 unsigned int total_done = 0; 1302 int rc; 1303 int commit = TX_COMMIT; 1304 int budget = TX_BUDGET; 1305 int work_done; 1306 1307 adapter = tx_ring->que->adapter; 1308 ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id); 1309 io_cq = &adapter->ena_dev->io_cq_queues[ena_qid]; 1310 next_to_clean = tx_ring->next_to_clean; 1311 1312 do { 1313 struct ena_tx_buffer *tx_info; 1314 struct mbuf *mbuf; 1315 1316 rc = ena_com_tx_comp_req_id_get(io_cq, &req_id); 1317 if (rc != 0) 1318 break; 1319 1320 rc = validate_tx_req_id(tx_ring, req_id); 1321 if (rc) 1322 break; 1323 1324 tx_info = &tx_ring->tx_buffer_info[req_id]; 1325 1326 mbuf = tx_info->mbuf; 1327 1328 tx_info->mbuf = NULL; 1329 bintime_clear(&tx_info->timestamp); 1330 1331 if (tx_info->num_of_bufs != 0) { 1332 /* Map is no longer required */ 1333 bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map); 1334 } 1335 1336 m_freem(mbuf); 1337 1338 total_done += tx_info->tx_descs; 1339 1340 tx_ring->free_tx_ids[next_to_clean] = req_id; 1341 next_to_clean = ENA_TX_RING_IDX_NEXT(next_to_clean, 1342 tx_ring->ring_size); 1343 1344 if (--commit == 0) { 1345 commit = TX_COMMIT; 1346 /* update ring state every TX_COMMIT descriptor */ 1347 tx_ring->next_to_clean = next_to_clean; 1348 ena_com_comp_ack(&adapter->ena_dev->io_sq_queues[ena_qid], total_done); 1349 ena_com_update_dev_comp_head(io_cq); 1350 total_done = 0; 1351 } 1352 } while (--budget); 1353 1354 work_done = TX_BUDGET - budget; 1355 1356 /* If there is still something to commit update ring state */ 1357 if (commit != TX_COMMIT) { 1358 tx_ring->next_to_clean = next_to_clean; 1359 ena_com_comp_ack(&adapter->ena_dev->io_sq_queues[ena_qid], total_done); 1360 ena_com_update_dev_comp_head(io_cq); 1361 } 1362 1363 taskqueue_enqueue(tx_ring->enqueue_tq, &tx_ring->enqueue_task); 1364 1365 return (work_done); 1366} 1367 1368static void 1369ena_rx_hash_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_ctx *ena_rx_ctx, 1370 struct mbuf *mbuf) 1371{ 1372 struct ena_adapter *adapter = rx_ring->adapter; 1373 1374 if (adapter->rss_support) { 1375 mbuf->m_pkthdr.flowid = ena_rx_ctx->hash; 1376 1377 if (ena_rx_ctx->frag && 1378 ena_rx_ctx->l3_proto != ENA_ETH_IO_L4_PROTO_UNKNOWN) { 1379 M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE_HASH); 1380 return; 1381 } 1382 1383 switch (ena_rx_ctx->l3_proto) { 1384 case ENA_ETH_IO_L3_PROTO_IPV4: 1385 switch (ena_rx_ctx->l4_proto) { 1386 case ENA_ETH_IO_L4_PROTO_TCP: 1387 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV4); 1388 break; 1389 case ENA_ETH_IO_L4_PROTO_UDP: 1390 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV4); 1391 break; 1392 default: 1393 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV4); 1394 } 1395 break; 1396 case ENA_ETH_IO_L3_PROTO_IPV6: 1397 switch (ena_rx_ctx->l4_proto) { 1398 case ENA_ETH_IO_L4_PROTO_TCP: 1399 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_TCP_IPV6); 1400 break; 1401 case ENA_ETH_IO_L4_PROTO_UDP: 1402 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_UDP_IPV6); 1403 break; 1404 default: 1405 M_HASHTYPE_SET(mbuf, M_HASHTYPE_RSS_IPV6); 1406 } 1407 break; 1408 case ENA_ETH_IO_L3_PROTO_UNKNOWN: 1409 M_HASHTYPE_SET(mbuf, M_HASHTYPE_NONE); 1410 break; 1411 default: 1412 M_HASHTYPE_SET(mbuf, M_HASHTYPE_OPAQUE_HASH); 1413 } 1414 } else { 1415 mbuf->m_pkthdr.flowid = rx_ring->qid; 1416 M_HASHTYPE_SET(mbuf, M_HASHTYPE_NONE); 1417 } 1418} 1419 1420/** 1421 * ena_rx_mbuf - assemble mbuf from descriptors 1422 * @rx_ring: ring for which we want to clean packets 1423 * @ena_bufs: buffer info 1424 * @ena_rx_ctx: metadata for this packet(s) 1425 * @next_to_clean: ring pointer 1426 * 1427 **/ 1428static struct mbuf* 1429ena_rx_mbuf(struct ena_ring *rx_ring, struct ena_com_rx_buf_info *ena_bufs, 1430 struct ena_com_rx_ctx *ena_rx_ctx, uint16_t *next_to_clean) 1431{ 1432 struct mbuf *mbuf; 1433 struct ena_rx_buffer *rx_info; 1434 struct ena_adapter *adapter; 1435 unsigned int len, buf = 0; 1436 unsigned int descs = ena_rx_ctx->descs; 1437 1438 adapter = rx_ring->adapter; 1439 rx_info = &rx_ring->rx_buffer_info[*next_to_clean]; 1440 1441 ENA_ASSERT(rx_info->mbuf, "Invalid alloc frag buffer\n"); 1442 1443 len = ena_bufs[0].len; 1444 ena_trace(ENA_DBG | ENA_RXPTH, "rx_info %p, mbuf %p, paddr %jx", 1445 rx_info, rx_info->mbuf, (uintmax_t)rx_info->ena_buf.paddr); 1446 1447 mbuf = rx_info->mbuf; 1448 mbuf->m_flags |= M_PKTHDR; 1449 mbuf->m_pkthdr.len = len; 1450 mbuf->m_len = len; 1451 mbuf->m_pkthdr.rcvif = rx_ring->que->adapter->ifp; 1452 1453 /* Fill mbuf with hash key and it's interpretation for optimization */ 1454 ena_rx_hash_mbuf(rx_ring, ena_rx_ctx, mbuf); 1455 1456 ena_trace(ENA_DBG | ENA_RXPTH, "rx mbuf 0x%p, flags=0x%x, len: %d", 1457 mbuf, mbuf->m_flags, mbuf->m_pkthdr.len); 1458 1459 /* DMA address is not needed anymore, unmap it */ 1460 bus_dmamap_unload(rx_ring->adapter->rx_buf_tag, rx_info->map); 1461 1462 rx_info->mbuf = NULL; 1463 *next_to_clean = ENA_RX_RING_IDX_NEXT(*next_to_clean, 1464 rx_ring->ring_size); 1465 1466 /* 1467 * While we have more than 1 descriptors for one rcvd packet, append 1468 * other mbufs to the main one 1469 */ 1470 while (--descs) { 1471 rx_info = &rx_ring->rx_buffer_info[*next_to_clean]; 1472 len = ena_bufs[++buf].len; 1473 1474 if (!m_append(mbuf, len, rx_info->mbuf->m_data)) { 1475 counter_u64_add(rx_ring->rx_stats.mbuf_alloc_fail, 1); 1476 ena_trace(ENA_WARNING, "Failed to append Rx mbuf %p", 1477 mbuf); 1478 } 1479 /* Free already appended mbuf, it won't be useful anymore */ 1480 bus_dmamap_unload(rx_ring->adapter->rx_buf_tag, rx_info->map); 1481 m_freem(rx_info->mbuf); 1482 rx_info->mbuf = NULL; 1483 1484 *next_to_clean = ENA_RX_RING_IDX_NEXT(*next_to_clean, 1485 rx_ring->ring_size); 1486 } 1487 1488 return (mbuf); 1489} 1490 1491/** 1492 * ena_rx_checksum - indicate in mbuf if hw indicated a good cksum 1493 **/ 1494static inline void 1495ena_rx_checksum(struct ena_ring *rx_ring, struct ena_com_rx_ctx *ena_rx_ctx, 1496 struct mbuf *mbuf) 1497{ 1498 1499 /* if IP and error */ 1500 if ((ena_rx_ctx->l3_proto == ENA_ETH_IO_L3_PROTO_IPV4) && 1501 (ena_rx_ctx->l3_csum_err)) { 1502 /* ipv4 checksum error */ 1503 mbuf->m_pkthdr.csum_flags = 0; 1504 counter_u64_add(rx_ring->rx_stats.bad_csum, 1); 1505 return; 1506 } 1507 1508 /* if TCP/UDP */ 1509 if ((ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_TCP) || 1510 (ena_rx_ctx->l4_proto == ENA_ETH_IO_L4_PROTO_UDP)) { 1511 if (ena_rx_ctx->l4_csum_err) { 1512 /* TCP/UDP checksum error */ 1513 mbuf->m_pkthdr.csum_flags = 0; 1514 counter_u64_add(rx_ring->rx_stats.bad_csum, 1); 1515 } else { 1516 mbuf->m_pkthdr.csum_flags = CSUM_IP_CHECKED; 1517 mbuf->m_pkthdr.csum_flags |= CSUM_IP_VALID; 1518 } 1519 } 1520 1521 return; 1522} 1523 1524/** 1525 * ena_rx_cleanup - handle rx irq 1526 * @arg: ring for which irq is being handled 1527 **/ 1528static int 1529ena_rx_cleanup(struct ena_ring *rx_ring) 1530{ 1531 struct ena_adapter *adapter; 1532 struct mbuf *mbuf; 1533 struct ena_com_rx_ctx ena_rx_ctx; 1534 struct ena_com_io_cq* io_cq; 1535 struct ena_com_io_sq* io_sq; 1536 /* struct ena_eth_io_intr_reg intr_reg; */ 1537 if_t ifp; 1538 uint16_t ena_qid; 1539 uint16_t next_to_clean; 1540 uint32_t refill_required; 1541 uint32_t refill_threshold; 1542 uint32_t do_if_input = 0; 1543 unsigned int qid; 1544 int rc; 1545 int budget = RX_BUDGET; 1546 1547 adapter = rx_ring->que->adapter; 1548 ifp = adapter->ifp; 1549 qid = rx_ring->que->id; 1550 ena_qid = ENA_IO_RXQ_IDX(qid); 1551 io_cq = &adapter->ena_dev->io_cq_queues[ena_qid]; 1552 io_sq = &adapter->ena_dev->io_sq_queues[ena_qid]; 1553 next_to_clean = rx_ring->next_to_clean; 1554 1555 do { 1556 ena_rx_ctx.ena_bufs = rx_ring->ena_bufs; 1557 ena_rx_ctx.max_bufs = adapter->max_rx_sgl_size; 1558 ena_rx_ctx.descs = 0; 1559 rc = ena_com_rx_pkt(io_cq, io_sq, &ena_rx_ctx); 1560 1561 if (unlikely(rc)) 1562 goto error; 1563 1564 if (unlikely(ena_rx_ctx.descs == 0)) 1565 break; 1566 1567 /* Receive mbuf from the ring */ 1568 mbuf = ena_rx_mbuf(rx_ring, rx_ring->ena_bufs, 1569 &ena_rx_ctx, &next_to_clean); 1570 1571 /* Exit if we failed to retrieve a buffer */ 1572 if (unlikely(!mbuf)) { 1573 next_to_clean = ENA_RX_RING_IDX_ADD(next_to_clean, 1574 ena_rx_ctx.descs, rx_ring->ring_size); 1575 break; 1576 } 1577 ena_trace(ENA_DBG | ENA_RXPTH, "Rx: %d bytes", 1578 mbuf->m_pkthdr.len); 1579 1580 if ((ifp->if_capenable & IFCAP_RXCSUM) || 1581 (ifp->if_capenable & IFCAP_RXCSUM_IPV6)) { 1582 ena_rx_checksum(rx_ring, &ena_rx_ctx, mbuf); 1583 } 1584 1585 counter_u64_add(rx_ring->rx_stats.bytes, mbuf->m_pkthdr.len); 1586 /* 1587 * LRO is only for IP/TCP packets and TCP checksum of the packet 1588 * should be computed by hardware. 1589 */ 1590 do_if_input = 1; 1591 if ((ifp->if_capenable & IFCAP_LRO) && 1592 (mbuf->m_pkthdr.csum_flags & CSUM_IP_VALID) && 1593 ena_rx_ctx.l4_proto == ENA_ETH_IO_L4_PROTO_TCP) { 1594 /* 1595 * Send to the stack if: 1596 * - LRO not enabled, or 1597 * - no LRO resources, or 1598 * - lro enqueue fails 1599 */ 1600 if (rx_ring->lro.lro_cnt != 0 && 1601 tcp_lro_rx(&rx_ring->lro, mbuf, 0) == 0) 1602 do_if_input = 0; 1603 } 1604 if (do_if_input) { 1605 ena_trace(ENA_DBG | ENA_RXPTH, "calling if_input() with mbuf %p", 1606 mbuf); 1607 (*ifp->if_input)(ifp, mbuf); 1608 } 1609 1610 counter_u64_add(rx_ring->rx_stats.cnt, 1); 1611 } while (--budget); 1612 1613 rx_ring->next_to_clean = next_to_clean; 1614 1615 refill_required = ena_com_sq_empty_space(io_sq); 1616 refill_threshold = rx_ring->ring_size / ENA_RX_REFILL_THRESH_DEVIDER; 1617 1618 if (refill_required > refill_threshold) { 1619 ena_com_update_dev_comp_head(rx_ring->ena_com_io_cq); 1620 ena_refill_rx_bufs(rx_ring, refill_required); 1621 } 1622 1623 tcp_lro_flush_all(&rx_ring->lro); 1624 1625 return (RX_BUDGET - budget); 1626 1627error: 1628 counter_u64_add(rx_ring->rx_stats.bad_desc_num, 1); 1629 return (RX_BUDGET - budget); 1630} 1631 1632/********************************************************************* 1633 * 1634 * MSIX & Interrupt Service routine 1635 * 1636 **********************************************************************/ 1637 1638/** 1639 * ena_handle_msix - MSIX Interrupt Handler for admin/async queue 1640 * @arg: interrupt number 1641 **/ 1642static void 1643ena_intr_msix_mgmnt(void *arg) 1644{ 1645 struct ena_adapter *adapter = (struct ena_adapter *)arg; 1646 1647 ena_com_admin_q_comp_intr_handler(adapter->ena_dev); 1648 if (likely(adapter->running)) 1649 ena_com_aenq_intr_handler(adapter->ena_dev, arg); 1650} 1651 1652/** 1653 * ena_handle_msix - MSIX Interrupt Handler for Tx/Rx 1654 * @arg: interrupt number 1655 **/ 1656static void 1657ena_handle_msix(void *arg) 1658{ 1659 struct ena_que *que = arg; 1660 struct ena_adapter *adapter = que->adapter; 1661 if_t ifp = adapter->ifp; 1662 struct ena_ring *tx_ring; 1663 struct ena_ring *rx_ring; 1664 struct ena_com_io_cq* io_cq; 1665 struct ena_eth_io_intr_reg intr_reg; 1666 int qid, ena_qid; 1667 int txc, rxc, i; 1668 1669 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1670 return; 1671 1672 ena_trace(ENA_DBG, "MSI-X TX/RX routine"); 1673 1674 tx_ring = que->tx_ring; 1675 rx_ring = que->rx_ring; 1676 qid = que->id; 1677 ena_qid = ENA_IO_TXQ_IDX(qid); 1678 io_cq = &adapter->ena_dev->io_cq_queues[ena_qid]; 1679 1680 for (i = 0; i < CLEAN_BUDGET; ++i) { 1681 rxc = ena_rx_cleanup(rx_ring); 1682 1683 /* Protection from calling ena_tx_cleanup from ena_start_xmit */ 1684 ENA_RING_MTX_LOCK(tx_ring); 1685 txc = ena_tx_cleanup(tx_ring); 1686 ENA_RING_MTX_UNLOCK(tx_ring); 1687 1688 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1689 return; 1690 1691 if (txc != TX_BUDGET && rxc != RX_BUDGET) 1692 break; 1693 } 1694 1695 /* Signal that work is done and unmask interrupt */ 1696 ena_com_update_intr_reg(&intr_reg, 1697 RX_IRQ_INTERVAL, 1698 TX_IRQ_INTERVAL, 1699 true); 1700 ena_com_unmask_intr(io_cq, &intr_reg); 1701} 1702 1703static int 1704ena_enable_msix(struct ena_adapter *adapter) 1705{ 1706 device_t dev = adapter->pdev; 1707 int i, msix_vecs, rc = 0; 1708 1709 /* Reserved the max msix vectors we might need */ 1710 msix_vecs = ENA_MAX_MSIX_VEC(adapter->num_queues); 1711 1712 adapter->msix_entries = ENA_MEM_ALLOC(adapter->ena_dev->dmadev, 1713 msix_vecs * sizeof(struct msix_entry)); 1714 if (!adapter->msix_entries) { 1715 device_printf(dev, 1716 "Failed to allocate msix_entries, vectors %d\n", msix_vecs); 1717 rc = ENOMEM; 1718 goto error; 1719 } 1720 device_printf(dev, "Allocated msix_entries, vectors (cnt: %d)\n", 1721 msix_vecs); 1722 1723 for (i = 0; i < msix_vecs; i++) { 1724 adapter->msix_entries[i].entry = i; 1725 /* Vectors must start from 1 */ 1726 adapter->msix_entries[i].vector = i + 1; 1727 } 1728 1729 rc = pci_alloc_msix(dev, &msix_vecs); 1730 if (rc != 0) { 1731 device_printf(dev, 1732 "Failed to enable MSIX, vectors %d rc %d\n", msix_vecs, rc); 1733 ENA_MEM_FREE(adapter->ena_dev->dmadev, adapter->msix_entries); 1734 adapter->msix_entries = NULL; 1735 rc = ENOSPC; 1736 goto error; 1737 } 1738 1739 adapter->msix_vecs = msix_vecs; 1740 adapter->msix_enabled = true; 1741 1742error: 1743 return (rc); 1744} 1745 1746static void 1747ena_setup_mgmnt_intr(struct ena_adapter *adapter) 1748{ 1749 1750 snprintf(adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].name, 1751 ENA_IRQNAME_SIZE, "ena-mgmnt@pci:%s", 1752 device_get_nameunit(adapter->pdev)); 1753 /* 1754 * Handler is NULL on purpose, it will be set 1755 * when mgmnt interrupt is acquired 1756 */ 1757 adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].handler = NULL; 1758 adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].data = adapter; 1759 adapter->irq_tbl[ENA_MGMNT_IRQ_IDX].vector = 1760 adapter->msix_entries[ENA_MGMNT_IRQ_IDX].vector; 1761 1762 return; 1763} 1764 1765static void 1766ena_setup_io_intr(struct ena_adapter *adapter) 1767{ 1768 static int last_bind_cpu = -1; 1769 int irq_idx; 1770 ena_trace(ENA_DBG, "enter"); 1771 1772 for (int i = 0; i < adapter->num_queues; i++) { 1773 irq_idx = ENA_IO_IRQ_IDX(i); 1774 1775 snprintf(adapter->irq_tbl[irq_idx].name, ENA_IRQNAME_SIZE, 1776 "%s-TxRx-%d", device_get_nameunit(adapter->pdev), i); 1777 adapter->irq_tbl[irq_idx].handler = ena_handle_msix; 1778 adapter->irq_tbl[irq_idx].data = &adapter->que[i]; 1779 adapter->irq_tbl[irq_idx].vector = 1780 adapter->msix_entries[irq_idx].vector; 1781 ena_trace(ENA_INFO | ENA_IOQ, "ena_setup_io_intr vector: %d\n", 1782 adapter->msix_entries[irq_idx].vector); 1783#ifdef RSS 1784 adapter->que[i].cpu = adapter->irq_tbl[irq_idx].cpu = 1785 rss_getcpu(i % rss_getnumbuckets()); 1786#else 1787 /* 1788 * We still want to bind rings to the corresponding cpu 1789 * using something similar to the RSS round-robin technique. 1790 */ 1791 if (last_bind_cpu < 0) 1792 last_bind_cpu = CPU_FIRST(); 1793 adapter->que[i].cpu = adapter->irq_tbl[irq_idx].cpu = 1794 last_bind_cpu; 1795 last_bind_cpu = CPU_NEXT(last_bind_cpu); 1796#endif 1797 } 1798 1799 return; 1800} 1801 1802static int 1803ena_request_mgmnt_irq(struct ena_adapter *adapter) 1804{ 1805 struct ena_irq *irq; 1806 unsigned long flags; 1807 int rc, rcc; 1808 1809 flags = RF_ACTIVE | RF_SHAREABLE; 1810 1811 irq = &adapter->irq_tbl[ENA_MGMNT_IRQ_IDX]; 1812 irq->res = bus_alloc_resource_any(adapter->pdev, SYS_RES_IRQ, 1813 &irq->vector, flags); 1814 1815 if (irq->res == NULL) { 1816 device_printf(adapter->pdev, "could not allocate " 1817 "irq vector: %d\n", irq->vector); 1818 rc = ENXIO; 1819 goto exit_res; 1820 } 1821 1822 if ((rc = bus_activate_resource(adapter->pdev, SYS_RES_IRQ, irq->vector, 1823 irq->res)) != 0) { 1824 device_printf(adapter->pdev, "could not activate " 1825 "irq vector: %d\n", irq->vector); 1826 goto exit_intr; 1827 } 1828 1829 if ((rc = bus_setup_intr(adapter->pdev, irq->res, 1830 INTR_TYPE_NET | INTR_MPSAFE, NULL, 1831 ena_intr_msix_mgmnt, irq->data, &irq->cookie)) != 0) { 1832 device_printf(adapter->pdev, "failed to register " 1833 "interrupt handler for irq %ju: %d\n", 1834 rman_get_start(irq->res), rc); 1835 goto exit_intr; 1836 } 1837 irq->requested = true; 1838 1839 return (rc); 1840 1841exit_intr: 1842 device_printf(adapter->pdev, "exit_intr: releasing resource" 1843 " for irq %d\n", irq->vector); 1844 rcc = bus_release_resource(adapter->pdev, SYS_RES_IRQ, 1845 irq->vector, irq->res); 1846 if (rcc) 1847 device_printf(adapter->pdev, "dev has no parent while " 1848 "releasing res for irq: %d\n", irq->vector); 1849 irq->res = NULL; 1850 1851exit_res: 1852 return (rc); 1853} 1854 1855static int 1856ena_request_io_irq(struct ena_adapter *adapter) 1857{ 1858 struct ena_irq *irq; 1859 unsigned long flags = 0; 1860 int rc = 0, i, rcc; 1861 1862 if (!adapter->msix_enabled) { 1863 device_printf(adapter->pdev, "failed to request irq\n"); 1864 return (EINVAL); 1865 } else { 1866 flags = RF_ACTIVE | RF_SHAREABLE; 1867 } 1868 1869 for (i = ENA_IO_IRQ_FIRST_IDX; i < adapter->msix_vecs; i++) { 1870 irq = &adapter->irq_tbl[i]; 1871 1872 if (irq->requested) 1873 continue; 1874 1875 irq->res = bus_alloc_resource_any(adapter->pdev, SYS_RES_IRQ, 1876 &irq->vector, flags); 1877 if (irq->res == NULL) { 1878 device_printf(adapter->pdev, "could not allocate " 1879 "irq vector: %d\n", irq->vector); 1880 goto err; 1881 } 1882 1883 if ((rc = bus_setup_intr(adapter->pdev, irq->res, 1884 INTR_TYPE_NET | INTR_MPSAFE, NULL, irq->handler, 1885 irq->data, &irq->cookie)) != 0) { 1886 device_printf(adapter->pdev, "failed to register " 1887 "interrupt handler for irq %ju: %d\n", 1888 rman_get_start(irq->res), rc); 1889 goto err; 1890 } 1891 irq->requested = true; 1892 1893#ifdef RSS 1894 device_printf(adapter->pdev, "queue %d - RSS bucket %d\n", 1895 i - ENA_IO_IRQ_FIRST_IDX, irq->cpu); 1896#else 1897 device_printf(adapter->pdev, "queue %d - cpu %d\n", 1898 i - ENA_IO_IRQ_FIRST_IDX, irq->cpu); 1899#endif 1900 } 1901 1902 return (rc); 1903 1904err: 1905 1906 for (; i >= ENA_IO_IRQ_FIRST_IDX; i--) { 1907 irq = &adapter->irq_tbl[i]; 1908 rcc = 0; 1909 1910 /* Once we entered err: section and irq->requested is true we 1911 free both intr and resources */ 1912 if (irq->requested == true) 1913 rcc = bus_teardown_intr(adapter->pdev, irq->res, irq->cookie); 1914 if (rcc) 1915 device_printf(adapter->pdev, "could not release" 1916 " irq: %d, error: %d\n", irq->vector, rcc); 1917 1918 /* If we entred err: section without irq->requested set we know 1919 it was bus_alloc_resource_any() that needs cleanup, provided 1920 res is not NULL. In case res is NULL no work in needed in 1921 this iteration */ 1922 rcc = 0; 1923 if (irq->res != NULL) { 1924 rcc = bus_release_resource(adapter->pdev, SYS_RES_IRQ, 1925 irq->vector, irq->res); 1926 } 1927 if (rcc) 1928 device_printf(adapter->pdev, "dev has no parent while " 1929 "releasing res for irq: %d\n", irq->vector); 1930 irq->requested = false; 1931 irq->res = NULL; 1932 } 1933 1934 return (rc); 1935} 1936 1937static void 1938ena_free_mgmnt_irq(struct ena_adapter *adapter) 1939{ 1940 struct ena_irq *irq; 1941 int rc; 1942 1943 irq = &adapter->irq_tbl[ENA_MGMNT_IRQ_IDX]; 1944 if (irq->requested) { 1945 ena_trace(ENA_INFO | ENA_ADMQ, "tear down irq: %d\n", 1946 irq->vector); 1947 rc = bus_teardown_intr(adapter->pdev, irq->res, irq->cookie); 1948 if (rc) 1949 device_printf(adapter->pdev, "failed to tear " 1950 "down irq: %d\n", irq->vector); 1951 irq->requested = 0; 1952 } 1953 1954 if (irq->res != NULL) { 1955 ena_trace(ENA_INFO | ENA_ADMQ, "release resource irq: %d\n", 1956 irq->vector); 1957 rc = bus_release_resource(adapter->pdev, SYS_RES_IRQ, 1958 irq->vector, irq->res); 1959 irq->res = NULL; 1960 if (rc) 1961 device_printf(adapter->pdev, "dev has no parent while " 1962 "releasing res for irq: %d\n", irq->vector); 1963 } 1964 1965 return; 1966} 1967 1968static void 1969ena_free_io_irq(struct ena_adapter *adapter) 1970{ 1971 struct ena_irq *irq; 1972 int rc; 1973 1974 for (int i = ENA_IO_IRQ_FIRST_IDX; i < adapter->msix_vecs; i++) { 1975 irq = &adapter->irq_tbl[i]; 1976 if (irq->requested) { 1977 ena_trace(ENA_INFO | ENA_IOQ, "tear down irq: %d\n", 1978 irq->vector); 1979 rc = bus_teardown_intr(adapter->pdev, irq->res, 1980 irq->cookie); 1981 if (rc) { 1982 device_printf(adapter->pdev, "failed to tear " 1983 "down irq: %d\n", irq->vector); 1984 } 1985 irq->requested = 0; 1986 } 1987 1988 if (irq->res != NULL) { 1989 ena_trace(ENA_INFO | ENA_IOQ, "release resource irq: %d\n", 1990 irq->vector); 1991 rc = bus_release_resource(adapter->pdev, SYS_RES_IRQ, 1992 irq->vector, irq->res); 1993 irq->res = NULL; 1994 if (rc) { 1995 device_printf(adapter->pdev, "dev has no parent" 1996 " while releasing res for irq: %d\n", 1997 irq->vector); 1998 } 1999 } 2000 } 2001 2002 return; 2003} 2004 2005static void 2006ena_free_irqs(struct ena_adapter* adapter) 2007{ 2008 2009 ena_free_io_irq(adapter); 2010 ena_free_mgmnt_irq(adapter); 2011 ena_disable_msix(adapter); 2012} 2013 2014static void 2015ena_disable_msix(struct ena_adapter *adapter) 2016{ 2017 2018 pci_release_msi(adapter->pdev); 2019 2020 adapter->msix_vecs = 0; 2021 ENA_MEM_FREE(adapter->ena_dev->dmadev, adapter->msix_entries); 2022 adapter->msix_entries = NULL; 2023} 2024 2025static void 2026ena_unmask_all_io_irqs(struct ena_adapter *adapter) 2027{ 2028 struct ena_com_io_cq* io_cq; 2029 struct ena_eth_io_intr_reg intr_reg; 2030 uint16_t ena_qid; 2031 int i; 2032 2033 /* Unmask interrupts for all queues */ 2034 for (i = 0; i < adapter->num_queues; i++) { 2035 ena_qid = ENA_IO_TXQ_IDX(i); 2036 io_cq = &adapter->ena_dev->io_cq_queues[ena_qid]; 2037 ena_com_update_intr_reg(&intr_reg, 0, 0, true); 2038 ena_com_unmask_intr(io_cq, &intr_reg); 2039 } 2040} 2041 2042/* Configure the Rx forwarding */ 2043static int ena_rss_configure(struct ena_adapter *adapter) 2044{ 2045 struct ena_com_dev *ena_dev = adapter->ena_dev; 2046 int rc; 2047 2048 /* Set indirect table */ 2049 rc = ena_com_indirect_table_set(ena_dev); 2050 if (unlikely(rc && rc != EPERM)) 2051 return rc; 2052 2053 /* Configure hash function (if supported) */ 2054 rc = ena_com_set_hash_function(ena_dev); 2055 if (unlikely(rc && (rc != EPERM))) 2056 return rc; 2057 2058 /* Configure hash inputs (if supported) */ 2059 rc = ena_com_set_hash_ctrl(ena_dev); 2060 if (unlikely(rc && (rc != EPERM))) 2061 return rc; 2062 2063 return 0; 2064} 2065 2066static void 2067ena_update_hw_stats(void *arg, int pending) 2068{ 2069 struct ena_adapter *adapter = arg; 2070 int rc; 2071 2072 for (;;) { 2073 if (!adapter->up) 2074 return; 2075 2076 rc = ena_update_stats_counters(adapter); 2077 if (rc) 2078 ena_trace(ENA_WARNING, 2079 "Error updating stats counters, rc = %d", rc); 2080 2081 pause("ena update hw stats", hz); 2082 } 2083} 2084 2085static int 2086ena_up_complete(struct ena_adapter *adapter) 2087{ 2088 int rc; 2089 2090 if (adapter->rss_support) { 2091 rc = ena_rss_configure(adapter); 2092 if (rc) 2093 return (rc); 2094 } 2095 2096 ena_change_mtu(adapter->ifp, adapter->ifp->if_mtu); 2097 ena_refill_all_rx_bufs(adapter); 2098 2099 return (0); 2100} 2101 2102static int 2103ena_up(struct ena_adapter *adapter) 2104{ 2105 int rc = 0; 2106 2107 if (!device_is_attached(adapter->pdev)) { 2108 device_printf(adapter->pdev, "device is not attached!\n"); 2109 return (ENXIO); 2110 } 2111 2112 if (!adapter->running) { 2113 device_printf(adapter->pdev, "device is not running!\n"); 2114 return (ENXIO); 2115 } 2116 2117 if (!adapter->up) { 2118 device_printf(adapter->pdev, "device is going UP\n"); 2119 2120 /* setup interrupts for IO queues */ 2121 ena_setup_io_intr(adapter); 2122 rc = ena_request_io_irq(adapter); 2123 if (rc) { 2124 ena_trace(ENA_ALERT, "err_req_irq"); 2125 goto err_req_irq; 2126 } 2127 2128 /* allocate transmit descriptors */ 2129 rc = ena_setup_all_tx_resources(adapter); 2130 if (rc) { 2131 ena_trace(ENA_ALERT, "err_setup_tx"); 2132 goto err_setup_tx; 2133 } 2134 2135 /* allocate receive descriptors */ 2136 rc = ena_setup_all_rx_resources(adapter); 2137 if (rc) { 2138 ena_trace(ENA_ALERT, "err_setup_rx"); 2139 goto err_setup_rx; 2140 } 2141 2142 /* create IO queues for Rx & Tx */ 2143 rc = ena_create_io_queues(adapter); 2144 if (rc) { 2145 ena_trace(ENA_ALERT, 2146 "create IO queues failed"); 2147 goto err_io_que; 2148 } 2149 2150 if (adapter->link_status) 2151 if_link_state_change(adapter->ifp, LINK_STATE_UP); 2152 2153 rc = ena_up_complete(adapter); 2154 if (rc) 2155 goto err_up_complete; 2156 2157 counter_u64_add(adapter->dev_stats.interface_up, 1); 2158 2159 ena_update_hwassist(adapter); 2160 2161 if_setdrvflagbits(adapter->ifp, IFF_DRV_RUNNING, 2162 IFF_DRV_OACTIVE); 2163 2164 callout_reset_sbt(&adapter->timer_service, SBT_1S, SBT_1S, 2165 ena_timer_service, (void *)adapter, 0); 2166 2167 taskqueue_enqueue(adapter->stats_tq, &adapter->stats_task); 2168 2169 adapter->up = true; 2170 2171 ena_unmask_all_io_irqs(adapter); 2172 } 2173 2174 return (0); 2175 2176err_up_complete: 2177 ena_destroy_all_io_queues(adapter); 2178err_io_que: 2179 ena_free_all_rx_resources(adapter); 2180err_setup_rx: 2181 ena_free_all_tx_resources(adapter); 2182err_setup_tx: 2183 ena_free_io_irq(adapter); 2184err_req_irq: 2185 return (rc); 2186} 2187 2188int 2189ena_update_stats_counters(struct ena_adapter *adapter) 2190{ 2191 struct ena_admin_basic_stats ena_stats; 2192 struct ena_hw_stats *stats = &adapter->hw_stats; 2193 int rc = 0; 2194 2195 if (!adapter->up) 2196 return (rc); 2197 2198 rc = ena_com_get_dev_basic_stats(adapter->ena_dev, &ena_stats); 2199 if (rc) 2200 return (rc); 2201 2202 stats->tx_bytes = ((uint64_t)ena_stats.tx_bytes_high << 32) | 2203 ena_stats.tx_bytes_low; 2204 stats->rx_bytes = ((uint64_t)ena_stats.rx_bytes_high << 32) | 2205 ena_stats.rx_bytes_low; 2206 2207 stats->rx_packets = ((uint64_t)ena_stats.rx_pkts_high << 32) | 2208 ena_stats.rx_pkts_low; 2209 stats->tx_packets = ((uint64_t)ena_stats.tx_pkts_high << 32) | 2210 ena_stats.tx_pkts_low; 2211 2212 stats->rx_drops = ((uint64_t)ena_stats.rx_drops_high << 32) | 2213 ena_stats.rx_drops_low; 2214 2215 return (0); 2216} 2217 2218static uint64_t 2219ena_get_counter(if_t ifp, ift_counter cnt) 2220{ 2221 struct ena_adapter *adapter; 2222 struct ena_hw_stats *stats; 2223 2224 adapter = if_getsoftc(ifp); 2225 stats = &adapter->hw_stats; 2226 2227 switch (cnt) { 2228 case IFCOUNTER_IPACKETS: 2229 return (stats->rx_packets); 2230 case IFCOUNTER_OPACKETS: 2231 return (stats->tx_packets); 2232 case IFCOUNTER_IBYTES: 2233 return (stats->rx_bytes); 2234 case IFCOUNTER_OBYTES: 2235 return (stats->tx_bytes); 2236 case IFCOUNTER_IQDROPS: 2237 return (stats->rx_drops); 2238 default: 2239 return (if_get_counter_default(ifp, cnt)); 2240 } 2241} 2242 2243static int 2244ena_media_change(if_t ifp) 2245{ 2246 /* Media Change is not supported by firmware */ 2247 return (0); 2248} 2249 2250static void 2251ena_media_status(if_t ifp, struct ifmediareq *ifmr) 2252{ 2253 struct ena_adapter *adapter = if_getsoftc(ifp); 2254 ena_trace(ENA_DBG, "enter"); 2255 2256 ENA_DEV_LOCK; 2257 2258 ifmr->ifm_status = IFM_AVALID; 2259 ifmr->ifm_active = IFM_ETHER; 2260 2261 if (!adapter->link_status) { 2262 ENA_DEV_UNLOCK; 2263 ena_trace(ENA_WARNING, "link_status = false"); 2264 return; 2265 } 2266 2267 ifmr->ifm_status |= IFM_ACTIVE; 2268 ifmr->ifm_active |= IFM_10G_T | IFM_FDX; 2269 2270 ENA_DEV_UNLOCK; 2271 2272 return; 2273} 2274 2275static void 2276ena_init(void *arg) 2277{ 2278 struct ena_adapter *adapter = (struct ena_adapter *)arg; 2279 2280 if (adapter->up == false) { 2281 sx_xlock(&adapter->ioctl_sx); 2282 ena_up(adapter); 2283 sx_unlock(&adapter->ioctl_sx); 2284 } 2285 2286 return; 2287} 2288 2289static int 2290ena_ioctl(if_t ifp, u_long command, caddr_t data) 2291{ 2292 struct ena_adapter *adapter; 2293 struct ifreq *ifr; 2294 int rc; 2295 2296 adapter = ifp->if_softc; 2297 ifr = (struct ifreq *)data; 2298 2299 /* 2300 * Acquiring lock to prevent from running up and down routines parallel. 2301 */ 2302 rc = 0; 2303 switch (command) { 2304 case SIOCSIFMTU: 2305 if (ifp->if_mtu == ifr->ifr_mtu) 2306 break; 2307 sx_xlock(&adapter->ioctl_sx); 2308 ena_down(adapter); 2309 2310 ena_change_mtu(ifp, ifr->ifr_mtu); 2311 2312 rc = ena_up(adapter); 2313 sx_unlock(&adapter->ioctl_sx); 2314 break; 2315 2316 case SIOCSIFFLAGS: 2317 if (ifp->if_flags & IFF_UP) { 2318 if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2319 if (ifp->if_flags & (IFF_PROMISC | 2320 IFF_ALLMULTI)) { 2321 device_printf(adapter->pdev, 2322 "ioctl promisc/allmulti\n"); 2323 } 2324 } else { 2325 sx_xlock(&adapter->ioctl_sx); 2326 rc = ena_up(adapter); 2327 sx_unlock(&adapter->ioctl_sx); 2328 } 2329 } else { 2330 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2331 sx_xlock(&adapter->ioctl_sx); 2332 ena_down(adapter); 2333 sx_unlock(&adapter->ioctl_sx); 2334 } 2335 } 2336 break; 2337 2338 case SIOCADDMULTI: 2339 case SIOCDELMULTI: 2340 break; 2341 2342 case SIOCSIFMEDIA: 2343 case SIOCGIFMEDIA: 2344 rc = ifmedia_ioctl(ifp, ifr, &adapter->media, command); 2345 break; 2346 2347 case SIOCSIFCAP: 2348 { 2349 int reinit = 0; 2350 2351 if (ifr->ifr_reqcap != ifp->if_capenable) { 2352 ifp->if_capenable = ifr->ifr_reqcap; 2353 reinit = 1; 2354 } 2355 2356 if (reinit && (ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2357 sx_xlock(&adapter->ioctl_sx); 2358 ena_down(adapter); 2359 rc = ena_up(adapter); 2360 sx_unlock(&adapter->ioctl_sx); 2361 } 2362 } 2363 2364 break; 2365 default: 2366 rc = ether_ioctl(ifp, command, data); 2367 break; 2368 } 2369 2370 return (rc); 2371} 2372 2373static int 2374ena_get_dev_offloads(struct ena_com_dev_get_features_ctx *feat) 2375{ 2376 int caps = 0; 2377 2378 if (feat->offload.tx & 2379 (ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK | 2380 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK | 2381 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK)) 2382 caps |= IFCAP_TXCSUM; 2383 2384 if (feat->offload.tx & 2385 (ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_FULL_MASK | 2386 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV6_CSUM_PART_MASK)) 2387 caps |= IFCAP_TXCSUM_IPV6; 2388 2389 if (feat->offload.tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV4_MASK) 2390 caps |= IFCAP_TSO4; 2391 2392 if (feat->offload.tx & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TSO_IPV6_MASK) 2393 caps |= IFCAP_TSO6; 2394 2395 if (feat->offload.rx_supported & 2396 (ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV4_CSUM_MASK | 2397 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L3_CSUM_IPV4_MASK)) 2398 caps |= IFCAP_RXCSUM; 2399 2400 if (feat->offload.rx_supported & 2401 ENA_ADMIN_FEATURE_OFFLOAD_DESC_RX_L4_IPV6_CSUM_MASK) 2402 caps |= IFCAP_RXCSUM_IPV6; 2403 2404 caps |= IFCAP_LRO | IFCAP_JUMBO_MTU; 2405 2406 return (caps); 2407} 2408 2409static void 2410ena_update_host_info(struct ena_admin_host_info *host_info, if_t ifp) 2411{ 2412 2413 host_info->supported_network_features[0] = 2414 (uint32_t)if_getcapabilities(ifp); 2415} 2416 2417static void 2418ena_update_hwassist(struct ena_adapter *adapter) 2419{ 2420 if_t ifp = adapter->ifp; 2421 uint32_t feat = adapter->tx_offload_cap; 2422 int cap = if_getcapenable(ifp); 2423 int flags = 0; 2424 2425 if_clearhwassist(ifp); 2426 2427 if (cap & IFCAP_TXCSUM) { 2428 if (feat & ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L3_CSUM_IPV4_MASK) 2429 flags |= CSUM_IP; 2430 if (feat & 2431 (ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_FULL_MASK | 2432 ENA_ADMIN_FEATURE_OFFLOAD_DESC_TX_L4_IPV4_CSUM_PART_MASK)) 2433 flags |= CSUM_IP_UDP | CSUM_IP_TCP; 2434 } 2435 2436 if (cap & IFCAP_TXCSUM_IPV6) 2437 flags |= CSUM_IP6_UDP | CSUM_IP6_TCP; 2438 2439 if (cap & IFCAP_TSO4) 2440 flags |= CSUM_IP_TSO; 2441 2442 if (cap & IFCAP_TSO6) 2443 flags |= CSUM_IP6_TSO; 2444 2445 if_sethwassistbits(ifp, flags, 0); 2446} 2447 2448static int 2449ena_setup_ifnet(device_t pdev, struct ena_adapter *adapter, 2450 struct ena_com_dev_get_features_ctx *feat) 2451{ 2452 if_t ifp; 2453 int caps = 0; 2454 2455 ena_trace(ENA_DBG, "enter"); 2456 2457 ifp = adapter->ifp = if_gethandle(IFT_ETHER); 2458 if (ifp == 0) { 2459 device_printf(pdev, "can not allocate ifnet structure\n"); 2460 return (ENXIO); 2461 } 2462 if_initname(ifp, device_get_name(pdev), device_get_unit(pdev)); 2463 if_setdev(ifp, pdev); 2464 if_setsoftc(ifp, adapter); 2465 2466 if_setflags(ifp, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST); 2467 if_setinitfn(ifp, ena_init); 2468 if_settransmitfn(ifp, ena_mq_start); 2469 if_setqflushfn(ifp, ena_qflush); 2470 if_setioctlfn(ifp, ena_ioctl); 2471 if_setgetcounterfn(ifp, ena_get_counter); 2472 2473 if_setsendqlen(ifp, adapter->tx_ring_size); 2474 if_setsendqready(ifp); 2475 if_setmtu(ifp, ETHERMTU); 2476 if_setbaudrate(ifp, 0); 2477 /* Zeroize capabilities... */ 2478 if_setcapabilities(ifp, 0); 2479 if_setcapenable(ifp, 0); 2480 /* check hardware support */ 2481 caps = ena_get_dev_offloads(feat); 2482 /* ... and set them */ 2483 if_setcapabilitiesbit(ifp, caps, 0); 2484 2485 /* TSO parameters */ 2486 ifp->if_hw_tsomax = ENA_TSO_MAXSIZE - 2487 (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN); 2488 ifp->if_hw_tsomaxsegcount = adapter->max_tx_sgl_size - 1; 2489 ifp->if_hw_tsomaxsegsize = ENA_TSO_MAXSIZE; 2490 2491 if_setifheaderlen(ifp, sizeof(struct ether_vlan_header)); 2492 if_setcapenable(ifp, if_getcapabilities(ifp)); 2493 2494 /* 2495 * Specify the media types supported by this adapter and register 2496 * callbacks to update media and link information 2497 */ 2498 ifmedia_init(&adapter->media, IFM_IMASK, 2499 ena_media_change, ena_media_status); 2500 ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL); 2501 ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO); 2502 2503 ether_ifattach(ifp, adapter->mac_addr); 2504 2505 return (0); 2506} 2507 2508static void 2509ena_down(struct ena_adapter *adapter) 2510{ 2511 2512 if (adapter->up) { 2513 device_printf(adapter->pdev, "device is going DOWN\n"); 2514 2515 callout_drain(&adapter->timer_service); 2516 2517 adapter->up = false; 2518 if_setdrvflagbits(adapter->ifp, IFF_DRV_OACTIVE, 2519 IFF_DRV_RUNNING); 2520 2521 /* Drain task responsible for updating hw stats */ 2522 while (taskqueue_cancel(adapter->stats_tq, &adapter->stats_task, NULL)) 2523 taskqueue_drain(adapter->stats_tq, &adapter->stats_task); 2524 2525 ena_free_io_irq(adapter); 2526 2527 ena_destroy_all_io_queues(adapter); 2528 2529 ena_free_all_tx_bufs(adapter); 2530 ena_free_all_rx_bufs(adapter); 2531 ena_free_all_tx_resources(adapter); 2532 ena_free_all_rx_resources(adapter); 2533 2534 counter_u64_add(adapter->dev_stats.interface_down, 1); 2535 } 2536 2537 return; 2538} 2539 2540static void 2541ena_tx_csum(struct ena_com_tx_ctx *ena_tx_ctx, struct mbuf *mbuf) 2542{ 2543 struct ena_com_tx_meta *ena_meta; 2544 struct ether_vlan_header *eh; 2545 u32 mss; 2546 bool offload; 2547 uint16_t etype; 2548 int ehdrlen; 2549 struct ip *ip; 2550 int iphlen; 2551 struct tcphdr *th; 2552 2553 offload = false; 2554 ena_meta = &ena_tx_ctx->ena_meta; 2555 mss = mbuf->m_pkthdr.tso_segsz; 2556 2557 if (mss != 0) 2558 offload = true; 2559 2560 if ((mbuf->m_pkthdr.csum_flags & CSUM_TSO) != 0) 2561 offload = true; 2562 2563 if ((mbuf->m_pkthdr.csum_flags & CSUM_OFFLOAD) != 0) 2564 offload = true; 2565 2566 if (offload == false) { 2567 ena_tx_ctx->meta_valid = 0; 2568 return; 2569 } 2570 2571 /* Determine where frame payload starts. */ 2572 eh = mtod(mbuf, struct ether_vlan_header *); 2573 if (eh->evl_encap_proto == htons(ETHERTYPE_VLAN)) { 2574 etype = ntohs(eh->evl_proto); 2575 ehdrlen = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN; 2576 } else { 2577 etype = ntohs(eh->evl_encap_proto); 2578 ehdrlen = ETHER_HDR_LEN; 2579 } 2580 2581 ip = (struct ip *)(mbuf->m_data + ehdrlen); 2582 iphlen = ip->ip_hl << 2; 2583 th = (struct tcphdr *)((caddr_t)ip + iphlen); 2584 2585 if ((mbuf->m_pkthdr.csum_flags & CSUM_IP) != 0) { 2586 ena_tx_ctx->l3_csum_enable = 1; 2587 } 2588 if ((mbuf->m_pkthdr.csum_flags & CSUM_TSO) != 0) { 2589 ena_tx_ctx->tso_enable = 1; 2590 ena_meta->l4_hdr_len = (th->th_off); 2591 } 2592 2593 switch (etype) { 2594 case ETHERTYPE_IP: 2595 ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV4; 2596 if (ip->ip_off == 0) 2597 ena_tx_ctx->df = 1; 2598 break; 2599 case ETHERTYPE_IPV6: 2600 ena_tx_ctx->l3_proto = ENA_ETH_IO_L3_PROTO_IPV6; 2601 2602 default: 2603 break; 2604 } 2605 2606 if (ip->ip_p == IPPROTO_TCP) { 2607 ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_TCP; 2608 if (mbuf->m_pkthdr.csum_flags & (CSUM_IP_TCP | CSUM_IP6_TCP)) 2609 ena_tx_ctx->l4_csum_enable = 1; 2610 else 2611 ena_tx_ctx->l4_csum_enable = 0; 2612 } else if (ip->ip_p == IPPROTO_UDP) { 2613 ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UDP; 2614 if (mbuf->m_pkthdr.csum_flags & (CSUM_IP_UDP | CSUM_IP6_UDP)) 2615 ena_tx_ctx->l4_csum_enable = 1; 2616 else 2617 ena_tx_ctx->l4_csum_enable = 0; 2618 } else { 2619 ena_tx_ctx->l4_proto = ENA_ETH_IO_L4_PROTO_UNKNOWN; 2620 ena_tx_ctx->l4_csum_enable = 0; 2621 } 2622 2623 ena_meta->mss = mss; 2624 ena_meta->l3_hdr_len = iphlen; 2625 ena_meta->l3_hdr_offset = ehdrlen; 2626 ena_tx_ctx->meta_valid = 1; 2627} 2628 2629static int 2630ena_check_and_collapse_mbuf(struct ena_ring *tx_ring, struct mbuf **mbuf) 2631{ 2632 struct ena_adapter *adapter; 2633 struct mbuf *collapsed_mbuf; 2634 int num_frags; 2635 2636 adapter = tx_ring->adapter; 2637 num_frags = ena_mbuf_count(*mbuf); 2638 2639 /* One segment must be reserved for configuration descriptor. */ 2640 if (num_frags < adapter->max_tx_sgl_size) 2641 return (0); 2642 counter_u64_add(tx_ring->tx_stats.collapse, 1); 2643 2644 collapsed_mbuf = m_collapse(*mbuf, M_NOWAIT, 2645 adapter->max_tx_sgl_size - 1); 2646 if (collapsed_mbuf == NULL) { 2647 counter_u64_add(tx_ring->tx_stats.collapse_err, 1); 2648 return (ENOMEM); 2649 } 2650 2651 /* If mbuf was collapsed succesfully, original mbuf is released. */ 2652 *mbuf = collapsed_mbuf; 2653 2654 return (0); 2655} 2656 2657static int 2658ena_xmit_mbuf(struct ena_ring *tx_ring, struct mbuf **mbuf) 2659{ 2660 struct ena_adapter *adapter; 2661 struct ena_tx_buffer *tx_info; 2662 struct ena_com_tx_ctx ena_tx_ctx; 2663 struct ena_com_dev *ena_dev; 2664 struct ena_com_buf *ena_buf; 2665 struct ena_com_io_sq* io_sq; 2666 bus_dma_segment_t segs[ENA_BUS_DMA_SEGS]; 2667 void *push_hdr; 2668 uint16_t next_to_use; 2669 uint16_t req_id; 2670 uint16_t push_len; 2671 uint16_t ena_qid; 2672 uint32_t len, nsegs, header_len; 2673 int i, rc; 2674 int nb_hw_desc; 2675 2676 ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id); 2677 adapter = tx_ring->que->adapter; 2678 ena_dev = adapter->ena_dev; 2679 io_sq = &adapter->ena_dev->io_sq_queues[ena_qid]; 2680 2681 ENA_ASSERT(*mbuf, "mbuf is NULL\n"); 2682 2683 rc = ena_check_and_collapse_mbuf(tx_ring, mbuf); 2684 if (rc) { 2685 ena_trace(ENA_WARNING, 2686 "Failed to collapse mbuf! err: %d", rc); 2687 return (rc); 2688 } 2689 2690 next_to_use = tx_ring->next_to_use; 2691 req_id = tx_ring->free_tx_ids[next_to_use]; 2692 tx_info = &tx_ring->tx_buffer_info[req_id]; 2693 2694 tx_info->mbuf = *mbuf; 2695 tx_info->num_of_bufs = 0; 2696 2697 ena_buf = tx_info->bufs; 2698 len = (*mbuf)->m_len; 2699 2700 ena_trace(ENA_DBG | ENA_TXPTH, "Tx: %d bytes", (*mbuf)->m_pkthdr.len); 2701 2702 push_len = 0; 2703 header_len = min_t(uint32_t, len, tx_ring->tx_max_header_size); 2704 push_hdr = NULL; 2705 2706 rc = bus_dmamap_load_mbuf_sg(adapter->tx_buf_tag, tx_info->map, 2707 *mbuf, segs, &nsegs, BUS_DMA_NOWAIT); 2708 2709 if (rc || (nsegs == 0)) { 2710 ena_trace(ENA_WARNING, 2711 "dmamap load failed! err: %d nsegs: %d", rc, nsegs); 2712 counter_u64_add(tx_ring->tx_stats.dma_mapping_err, 1); 2713 tx_info->mbuf = NULL; 2714 if (rc == ENOMEM) 2715 return (ENA_COM_NO_MEM); 2716 else 2717 return (ENA_COM_INVAL); 2718 } 2719 2720 for (i = 0; i < nsegs; i++) { 2721 ena_buf->len = segs[i].ds_len; 2722 ena_buf->paddr = segs[i].ds_addr; 2723 ena_buf++; 2724 } 2725 tx_info->num_of_bufs = nsegs; 2726 2727 memset(&ena_tx_ctx, 0x0, sizeof(struct ena_com_tx_ctx)); 2728 ena_tx_ctx.ena_bufs = tx_info->bufs; 2729 ena_tx_ctx.push_header = push_hdr; 2730 ena_tx_ctx.num_bufs = tx_info->num_of_bufs; 2731 ena_tx_ctx.req_id = req_id; 2732 ena_tx_ctx.header_len = header_len; 2733 2734 /* Set flags and meta data */ 2735 ena_tx_csum(&ena_tx_ctx, *mbuf); 2736 /* Prepare the packet's descriptors and send them to device */ 2737 rc = ena_com_prepare_tx(io_sq, &ena_tx_ctx, &nb_hw_desc); 2738 if (rc != 0) { 2739 ena_trace(ENA_WARNING, "failed to prepare tx bufs\n"); 2740 counter_enter(); 2741 counter_u64_add_protected(tx_ring->tx_stats.queue_stop, 1); 2742 counter_u64_add_protected(tx_ring->tx_stats.prepare_ctx_err, 1); 2743 counter_exit(); 2744 goto dma_error; 2745 } 2746 2747 counter_enter(); 2748 counter_u64_add_protected(tx_ring->tx_stats.cnt, 1); 2749 counter_u64_add_protected(tx_ring->tx_stats.bytes, (*mbuf)->m_pkthdr.len); 2750 counter_exit(); 2751 2752 tx_info->tx_descs = nb_hw_desc; 2753 getbinuptime(&tx_info->timestamp); 2754 tx_info->print_once = true; 2755 2756 tx_ring->next_to_use = ENA_TX_RING_IDX_NEXT(next_to_use, 2757 tx_ring->ring_size); 2758 2759 bus_dmamap_sync(adapter->tx_buf_tag, tx_info->map, BUS_DMASYNC_PREWRITE); 2760 2761 return (0); 2762 2763dma_error: 2764 tx_info->mbuf = NULL; 2765 bus_dmamap_unload(adapter->tx_buf_tag, tx_info->map); 2766 2767 return (rc); 2768} 2769 2770static void 2771ena_start_xmit(struct ena_ring *tx_ring) 2772{ 2773 struct mbuf *mbuf; 2774 struct ena_adapter *adapter = tx_ring->adapter; 2775 struct ena_com_io_sq* io_sq; 2776 int ena_qid; 2777 int acum_pkts = 0; 2778 int ret = 0; 2779 2780 if ((adapter->ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2781 return; 2782 2783 if (!adapter->link_status) 2784 return; 2785 2786 ena_qid = ENA_IO_TXQ_IDX(tx_ring->que->id); 2787 io_sq = &adapter->ena_dev->io_sq_queues[ena_qid]; 2788 2789 while ((mbuf = drbr_peek(adapter->ifp, tx_ring->br)) != NULL) { 2790 ena_trace(ENA_DBG | ENA_TXPTH, "\ndequeued mbuf %p with flags %#x and" 2791 " header csum flags %#jx", 2792 mbuf, mbuf->m_flags, mbuf->m_pkthdr.csum_flags); 2793 2794 if (ena_com_sq_empty_space(io_sq) < ENA_TX_CLEANUP_TRESHOLD) 2795 ena_tx_cleanup(tx_ring); 2796 2797 if ((ret = ena_xmit_mbuf(tx_ring, &mbuf)) != 0) { 2798 if (ret == ENA_COM_NO_MEM) { 2799 drbr_putback(adapter->ifp, tx_ring->br, mbuf); 2800 } else if (ret == ENA_COM_NO_SPACE) { 2801 drbr_putback(adapter->ifp, tx_ring->br, mbuf); 2802 } else { 2803 m_freem(mbuf); 2804 drbr_advance(adapter->ifp, tx_ring->br); 2805 } 2806 2807 break; 2808 } 2809 2810 drbr_advance(adapter->ifp, tx_ring->br); 2811 2812 if ((adapter->ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2813 return; 2814 2815 acum_pkts++; 2816 2817 BPF_MTAP(adapter->ifp, mbuf); 2818 2819 if (acum_pkts == DB_THRESHOLD) { 2820 acum_pkts = 0; 2821 wmb(); 2822 /* Trigger the dma engine */ 2823 ena_com_write_sq_doorbell(io_sq); 2824 counter_u64_add(tx_ring->tx_stats.doorbells, 1); 2825 } 2826 2827 } 2828 2829 if (acum_pkts) { 2830 wmb(); 2831 /* Trigger the dma engine */ 2832 ena_com_write_sq_doorbell(io_sq); 2833 counter_u64_add(tx_ring->tx_stats.doorbells, 1); 2834 } 2835 2836 if (ena_com_sq_empty_space(io_sq) < ENA_TX_CLEANUP_TRESHOLD) 2837 ena_tx_cleanup(tx_ring); 2838} 2839 2840static void 2841ena_deferred_mq_start(void *arg, int pending) 2842{ 2843 struct ena_ring *tx_ring = (struct ena_ring *)arg; 2844 struct ifnet *ifp = tx_ring->adapter->ifp; 2845 2846 while (drbr_empty(ifp, tx_ring->br) == FALSE && 2847 (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { 2848 ENA_RING_MTX_LOCK(tx_ring); 2849 ena_start_xmit(tx_ring); 2850 ENA_RING_MTX_UNLOCK(tx_ring); 2851 } 2852} 2853 2854static int 2855ena_mq_start(if_t ifp, struct mbuf *m) 2856{ 2857 struct ena_adapter *adapter = ifp->if_softc; 2858 struct ena_ring *tx_ring; 2859 int ret, is_drbr_empty; 2860 uint32_t i; 2861 2862 if ((adapter->ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 2863 return (ENODEV); 2864 2865 /* Which queue to use */ 2866 /* 2867 * If everything is setup correctly, it should be the 2868 * same bucket that the current CPU we're on is. 2869 * It should improve performance. 2870 */ 2871 if (M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) { 2872#ifdef RSS 2873 if (rss_hash2bucket(m->m_pkthdr.flowid, 2874 M_HASHTYPE_GET(m), &i) == 0) { 2875 i = i % adapter->num_queues; 2876 2877 } else 2878#endif 2879 { 2880 i = m->m_pkthdr.flowid % adapter->num_queues; 2881 } 2882 } else { 2883 i = curcpu % adapter->num_queues; 2884 } 2885 tx_ring = &adapter->tx_ring[i]; 2886 2887 /* Check if drbr is empty before putting packet */ 2888 is_drbr_empty = drbr_empty(ifp, tx_ring->br); 2889 ret = drbr_enqueue(ifp, tx_ring->br, m); 2890 if (ret) { 2891 taskqueue_enqueue(tx_ring->enqueue_tq, &tx_ring->enqueue_task); 2892 return (ret); 2893 } 2894 2895 if (is_drbr_empty && ENA_RING_MTX_TRYLOCK(tx_ring)) { 2896 ena_start_xmit(tx_ring); 2897 ENA_RING_MTX_UNLOCK(tx_ring); 2898 } else { 2899 taskqueue_enqueue(tx_ring->enqueue_tq, &tx_ring->enqueue_task); 2900 } 2901 2902 return (0); 2903} 2904 2905static void 2906ena_qflush(if_t ifp) 2907{ 2908 struct ena_adapter *adapter = ifp->if_softc; 2909 struct ena_ring *tx_ring = adapter->tx_ring; 2910 int i; 2911 2912 for(i = 0; i < adapter->num_queues; ++i, ++tx_ring) 2913 if (drbr_empty(ifp, tx_ring->br) == FALSE) { 2914 ENA_RING_MTX_LOCK(tx_ring); 2915 drbr_flush(ifp, tx_ring->br); 2916 ENA_RING_MTX_UNLOCK(tx_ring); 2917 } 2918 2919 if_qflush(ifp); 2920 2921 return; 2922} 2923 2924static int ena_calc_io_queue_num(struct ena_adapter *adapter, 2925 struct ena_com_dev_get_features_ctx *get_feat_ctx) 2926{ 2927 int io_sq_num, io_cq_num, io_queue_num; 2928 2929 io_sq_num = get_feat_ctx->max_queues.max_sq_num; 2930 io_cq_num = get_feat_ctx->max_queues.max_sq_num; 2931 2932 io_queue_num = min_t(int, mp_ncpus, ENA_MAX_NUM_IO_QUEUES); 2933 io_queue_num = min_t(int, io_queue_num, io_sq_num); 2934 io_queue_num = min_t(int, io_queue_num, io_cq_num); 2935 /* 1 IRQ for for mgmnt and 1 IRQ for each TX/RX pair */ 2936 io_queue_num = min_t(int, io_queue_num, 2937 pci_msix_count(adapter->pdev) - 1); 2938#ifdef RSS 2939 io_queue_num = min_t(int, io_queue_num, rss_getnumbuckets()); 2940#endif 2941 2942 return io_queue_num; 2943} 2944 2945static int ena_calc_queue_size(struct ena_adapter *adapter, 2946 uint16_t *max_tx_sgl_size, uint16_t *max_rx_sgl_size, 2947 struct ena_com_dev_get_features_ctx *feat) 2948{ 2949 uint32_t queue_size = ENA_DEFAULT_RING_SIZE; 2950 uint32_t v; 2951 uint32_t q; 2952 2953 queue_size = min_t(uint32_t, queue_size, 2954 feat->max_queues.max_cq_depth); 2955 queue_size = min_t(uint32_t, queue_size, 2956 feat->max_queues.max_sq_depth); 2957 2958 /* round down to the nearest power of 2 */ 2959 v = queue_size; 2960 while (v != 0) { 2961 if (powerof2(queue_size)) 2962 break; 2963 v /= 2; 2964 q = rounddown2(queue_size, v); 2965 if (q != 0) { 2966 queue_size = q; 2967 break; 2968 } 2969 } 2970 2971 if (unlikely(!queue_size)) { 2972 device_printf(adapter->pdev, "Invalid queue size\n"); 2973 return ENA_COM_FAULT; 2974 } 2975 2976 *max_tx_sgl_size = min_t(uint16_t, ENA_PKT_MAX_BUFS, 2977 feat->max_queues.max_packet_tx_descs); 2978 *max_rx_sgl_size = min_t(uint16_t, ENA_PKT_MAX_BUFS, 2979 feat->max_queues.max_packet_rx_descs); 2980 2981 return queue_size; 2982} 2983 2984static int ena_rss_init_default(struct ena_adapter *adapter) 2985{ 2986 struct ena_com_dev *ena_dev = adapter->ena_dev; 2987 device_t dev = adapter->pdev; 2988 int qid, rc, i; 2989 2990 rc = ena_com_rss_init(ena_dev, ENA_RX_RSS_TABLE_LOG_SIZE); 2991 if (unlikely(rc)) { 2992 device_printf(dev, "Cannot init RSS\n"); 2993 goto err_rss_init; 2994 } 2995 2996 for (i = 0; i < ENA_RX_RSS_TABLE_SIZE; i++) { 2997#ifdef RSS 2998 qid = rss_get_indirection_to_bucket(i); 2999 qid = qid % adapter->num_queues; 3000#else 3001 qid = i % adapter->num_queues; 3002#endif 3003 rc = ena_com_indirect_table_fill_entry(ena_dev, i, 3004 ENA_IO_RXQ_IDX(qid)); 3005 if (unlikely(rc && (rc != EPERM))) { 3006 device_printf(dev, "Cannot fill indirect table\n"); 3007 goto err_fill_indir; 3008 } 3009 } 3010 3011 rc = ena_com_fill_hash_function(ena_dev, ENA_ADMIN_CRC32, NULL, 3012 ENA_HASH_KEY_SIZE, 0xFFFFFFFF); 3013 if (unlikely(rc && (rc != EPERM))) { 3014 device_printf(dev, "Cannot fill hash function\n"); 3015 goto err_fill_indir; 3016 } 3017 3018 rc = ena_com_set_default_hash_ctrl(ena_dev); 3019 if (unlikely(rc && (rc != EPERM))) { 3020 device_printf(dev, "Cannot fill hash control\n"); 3021 goto err_fill_indir; 3022 } 3023 3024 return (0); 3025 3026err_fill_indir: 3027 ena_com_rss_destroy(ena_dev); 3028err_rss_init: 3029 return (rc); 3030} 3031 3032static void 3033ena_rss_init_default_deferred(void *arg) 3034{ 3035 struct ena_adapter *adapter; 3036 devclass_t dc; 3037 int max; 3038 int rc; 3039 3040 dc = devclass_find("ena"); 3041 if (dc == NULL) { 3042 ena_trace(ENA_DBG, "No devclass ena\n"); 3043 return; 3044 } 3045 3046 max = devclass_get_maxunit(dc); 3047 while (max-- >= 0) { 3048 adapter = devclass_get_softc(dc, max); 3049 if (adapter != NULL) { 3050 rc = ena_rss_init_default(adapter); 3051 adapter->rss_support = true; 3052 if (rc) { 3053 device_printf(adapter->pdev, 3054 "WARNING: RSS was not properly initialized," 3055 " it will affect bandwith\n"); 3056 adapter->rss_support = false; 3057 } 3058 } 3059 } 3060} 3061SYSINIT(ena_rss_init, SI_SUB_KICK_SCHEDULER, SI_ORDER_SECOND, ena_rss_init_default_deferred, NULL); 3062 3063static void ena_config_host_info(struct ena_com_dev *ena_dev) 3064{ 3065 struct ena_admin_host_info *host_info; 3066 int rc; 3067 3068 /* Allocate only the host info */ 3069 rc = ena_com_allocate_host_info(ena_dev); 3070 if (rc) { 3071 ena_trace(ENA_ALERT, "Cannot allocate host info\n"); 3072 return; 3073 } 3074 3075 host_info = ena_dev->host_attr.host_info; 3076 3077 host_info->os_type = ENA_ADMIN_OS_FREEBSD; 3078 host_info->kernel_ver = osreldate; 3079 3080 sprintf(host_info->kernel_ver_str, "%d", osreldate); 3081 host_info->os_dist = 0; 3082 strncpy(host_info->os_dist_str, osrelease, 3083 sizeof(host_info->os_dist_str) - 1); 3084 3085 host_info->driver_version = 3086 (DRV_MODULE_VER_MAJOR) | 3087 (DRV_MODULE_VER_MINOR << ENA_ADMIN_HOST_INFO_MINOR_SHIFT) | 3088 (DRV_MODULE_VER_SUBMINOR << ENA_ADMIN_HOST_INFO_SUB_MINOR_SHIFT); 3089 3090 rc = ena_com_set_host_attributes(ena_dev); 3091 if (rc) { 3092 if (rc == EPERM) 3093 ena_trace(ENA_WARNING, "Cannot set host attributes\n"); 3094 else 3095 ena_trace(ENA_ALERT, "Cannot set host attributes\n"); 3096 3097 goto err; 3098 } 3099 3100 return; 3101 3102err: 3103 ena_com_delete_host_info(ena_dev); 3104} 3105 3106static int 3107ena_device_init(struct ena_adapter *adapter, device_t pdev, 3108 struct ena_com_dev_get_features_ctx *get_feat_ctx, int *wd_active) 3109{ 3110 struct ena_com_dev* ena_dev = adapter->ena_dev; 3111 bool readless_supported; 3112 uint32_t aenq_groups; 3113 int dma_width; 3114 int rc; 3115 3116 rc = ena_com_mmio_reg_read_request_init(ena_dev); 3117 if (rc) { 3118 device_printf(pdev, "failed to init mmio read less\n"); 3119 return rc; 3120 } 3121 3122 /* 3123 * The PCIe configuration space revision id indicate if mmio reg 3124 * read is disabled 3125 */ 3126 readless_supported = !(pci_get_revid(pdev) & ENA_MMIO_DISABLE_REG_READ); 3127 ena_com_set_mmio_read_mode(ena_dev, readless_supported); 3128 3129 rc = ena_com_dev_reset(ena_dev); 3130 if (rc) { 3131 device_printf(pdev, "Can not reset device\n"); 3132 goto err_mmio_read_less; 3133 } 3134 3135 rc = ena_com_validate_version(ena_dev); 3136 if (rc) { 3137 device_printf(pdev, "device version is too low\n"); 3138 goto err_mmio_read_less; 3139 } 3140 3141 dma_width = ena_com_get_dma_width(ena_dev); 3142 if (dma_width < 0) { 3143 device_printf(pdev, "Invalid dma width value %d", dma_width); 3144 rc = dma_width; 3145 goto err_mmio_read_less; 3146 } 3147 adapter->dma_width = dma_width; 3148 3149 /* ENA admin level init */ 3150 rc = ena_com_admin_init(ena_dev, &aenq_handlers, true); 3151 if (rc) { 3152 device_printf(pdev, 3153 "Can not initialize ena admin queue with device\n"); 3154 goto err_mmio_read_less; 3155 } 3156 3157 /* 3158 * To enable the msix interrupts the driver needs to know the number 3159 * of queues. So the driver uses polling mode to retrieve this 3160 * information 3161 */ 3162 ena_com_set_admin_polling_mode(ena_dev, true); 3163 3164 ena_config_host_info(ena_dev); 3165 3166 /* Get Device Attributes */ 3167 rc = ena_com_get_dev_attr_feat(ena_dev, get_feat_ctx); 3168 if (rc) { 3169 device_printf(pdev, 3170 "Cannot get attribute for ena device rc: %d\n", rc); 3171 goto err_admin_init; 3172 } 3173 3174 aenq_groups = BIT(ENA_ADMIN_LINK_CHANGE) | 3175 BIT(ENA_ADMIN_FATAL_ERROR) | 3176 BIT(ENA_ADMIN_WARNING) | 3177 BIT(ENA_ADMIN_NOTIFICATION) | 3178 BIT(ENA_ADMIN_KEEP_ALIVE); 3179 3180 aenq_groups &= get_feat_ctx->aenq.supported_groups; 3181 rc = ena_com_set_aenq_config(ena_dev, aenq_groups); 3182 if (rc) { 3183 device_printf(pdev, "Cannot configure aenq groups rc: %d\n", rc); 3184 goto err_admin_init; 3185 } 3186 3187 *wd_active = !!(aenq_groups & BIT(ENA_ADMIN_KEEP_ALIVE)); 3188 3189 return 0; 3190 3191err_admin_init: 3192 ena_com_delete_host_info(ena_dev); 3193 ena_com_admin_destroy(ena_dev); 3194err_mmio_read_less: 3195 ena_com_mmio_reg_read_request_destroy(ena_dev); 3196 3197 return rc; 3198} 3199 3200static int ena_enable_msix_and_set_admin_interrupts(struct ena_adapter *adapter, 3201 int io_vectors) 3202{ 3203 struct ena_com_dev *ena_dev = adapter->ena_dev; 3204 int rc; 3205 3206 rc = ena_enable_msix(adapter); 3207 if (rc) { 3208 device_printf(adapter->pdev, "Error with MSI-X enablement\n"); 3209 return rc; 3210 } 3211 3212 ena_setup_mgmnt_intr(adapter); 3213 3214 rc = ena_request_mgmnt_irq(adapter); 3215 if (rc) { 3216 device_printf(adapter->pdev, "Cannot setup mgmnt queue intr\n"); 3217 goto err_disable_msix; 3218 } 3219 3220 ena_com_set_admin_polling_mode(ena_dev, false); 3221 3222 ena_com_admin_aenq_enable(ena_dev); 3223 3224 return 0; 3225 3226err_disable_msix: 3227 ena_disable_msix(adapter); 3228 3229 return rc; 3230} 3231 3232/* Function called on ENA_ADMIN_KEEP_ALIVE event */ 3233static void ena_keep_alive_wd(void *adapter_data, 3234 struct ena_admin_aenq_entry *aenq_e) 3235{ 3236 struct ena_adapter *adapter = (struct ena_adapter *)adapter_data; 3237 sbintime_t stime; 3238 3239 stime = getsbinuptime(); 3240 atomic_store_rel_64(&adapter->keep_alive_timestamp, stime); 3241} 3242 3243/* Check for keep alive expiration */ 3244static void check_for_missing_keep_alive(struct ena_adapter *adapter) 3245{ 3246 sbintime_t timestamp, time; 3247 3248 if (adapter->wd_active == 0) 3249 return; 3250 3251 if (adapter->keep_alive_timeout == 0) 3252 return; 3253 3254 timestamp = atomic_load_acq_64(&adapter->keep_alive_timestamp); 3255 time = getsbinuptime() - timestamp; 3256 if (unlikely(time > adapter->keep_alive_timeout)) { 3257 device_printf(adapter->pdev, 3258 "Keep alive watchdog timeout.\n"); 3259 counter_u64_add(adapter->dev_stats.wd_expired, 1); 3260 adapter->trigger_reset = true; 3261 } 3262} 3263 3264/* Check if admin queue is enabled */ 3265static void check_for_admin_com_state(struct ena_adapter *adapter) 3266{ 3267 if (unlikely(!ena_com_get_admin_running_state(adapter->ena_dev))) { 3268 device_printf(adapter->pdev, 3269 "ENA admin queue is not in running state!\n"); 3270 counter_u64_add(adapter->dev_stats.admin_q_pause, 1); 3271 adapter->trigger_reset = true; 3272 } 3273} 3274 3275/* 3276 * Check for TX which were not completed on time. 3277 * Timeout is defined by "missing_tx_timeout". 3278 * Reset will be performed if number of incompleted 3279 * transactions exceeds "missing_tx_threshold". 3280 */ 3281static void check_for_missing_tx_completions(struct ena_adapter *adapter) 3282{ 3283 struct ena_ring *tx_ring; 3284 struct ena_tx_buffer *tx_info; 3285 struct bintime curtime, time; 3286 int i, j, budget, missed_tx; 3287 3288 /* Make sure the driver doesn't turn the device in other process */ 3289 rmb(); 3290 3291 if (!adapter->up) 3292 return; 3293 3294 if (adapter->trigger_reset) 3295 return; 3296 3297 if (adapter->missing_tx_timeout == 0) 3298 return; 3299 3300 budget = adapter->missing_tx_max_queues; 3301 getbinuptime(&curtime); 3302 3303 for (i = adapter->next_monitored_tx_qid; i < adapter->num_queues; i++) { 3304 tx_ring = &adapter->tx_ring[i]; 3305 3306 missed_tx = 0; 3307 3308 for (j = 0; j < tx_ring->ring_size; j++) { 3309 tx_info = &tx_ring->tx_buffer_info[j]; 3310 3311 if (!bintime_isset(&tx_info->timestamp)) 3312 continue; 3313 3314 time = curtime; 3315 bintime_sub(&time, &tx_info->timestamp); 3316 3317 /* Check again if packet is still waiting */ 3318 if (bintime_isset(&tx_info->timestamp) && unlikely( 3319 bttosbt(time) > adapter->missing_tx_timeout)) { 3320 if (tx_info->print_once) 3321 device_printf(adapter->pdev, 3322 "Found a Tx that wasn't completed " 3323 "on time, qid %d, index %d.\n", 3324 tx_ring->qid, j); 3325 3326 tx_info->print_once = false; 3327 missed_tx++; 3328 3329 if (unlikely(missed_tx > 3330 adapter->missing_tx_threshold)) { 3331 device_printf(adapter->pdev, 3332 "The number of lost tx completion " 3333 "is above the threshold (%d > %d). " 3334 "Reset the device\n", missed_tx, 3335 adapter->missing_tx_threshold); 3336 adapter->trigger_reset = true; 3337 return; 3338 } 3339 } 3340 } 3341 3342 budget--; 3343 if (!budget) { 3344 i++; 3345 break; 3346 } 3347 } 3348 3349 adapter->next_monitored_tx_qid = i % adapter->num_queues; 3350} 3351 3352 3353static void 3354ena_timer_service(void *data) 3355{ 3356 struct ena_adapter *adapter = (struct ena_adapter *)data; 3357 struct ena_admin_host_info *host_info = 3358 adapter->ena_dev->host_attr.host_info; 3359 3360 check_for_missing_keep_alive(adapter); 3361 3362 check_for_admin_com_state(adapter); 3363 3364 check_for_missing_tx_completions(adapter); 3365 3366 if (host_info) 3367 ena_update_host_info(host_info, adapter->ifp); 3368 3369 if (unlikely(adapter->trigger_reset)) { 3370 device_printf(adapter->pdev, "Trigger reset is on\n"); 3371 taskqueue_enqueue(adapter->reset_tq, &adapter->reset_task); 3372 return; 3373 } 3374 3375 /* 3376 * Schedule another timeout one second from now. 3377 */ 3378 callout_schedule_sbt(&adapter->timer_service, SBT_1S, SBT_1S, 0); 3379} 3380 3381static void 3382ena_reset_task(void *arg, int pending) 3383{ 3384 struct ena_com_dev_get_features_ctx get_feat_ctx; 3385 struct ena_adapter *adapter = (struct ena_adapter *)arg; 3386 struct ena_com_dev *ena_dev = adapter->ena_dev; 3387 bool dev_up; 3388 int rc; 3389 3390 if (unlikely(!adapter->trigger_reset)) { 3391 device_printf(adapter->pdev, 3392 "device reset scheduled but trigger_reset is off\n"); 3393 return; 3394 } 3395 3396 sx_xlock(&adapter->ioctl_sx); 3397 3398 callout_drain(&adapter->timer_service); 3399 3400 dev_up = adapter->up; 3401 3402 ena_com_set_admin_running_state(ena_dev, false); 3403 ena_free_mgmnt_irq(adapter); 3404 ena_down(adapter); 3405 ena_com_dev_reset(ena_dev); 3406 ena_disable_msix(adapter); 3407 ena_com_abort_admin_commands(ena_dev); 3408 ena_com_wait_for_abort_completion(ena_dev); 3409 ena_com_admin_destroy(ena_dev); 3410 ena_com_mmio_reg_read_request_destroy(ena_dev); 3411 3412 adapter->trigger_reset = false; 3413 3414 /* Finished destroy part. Restart the device */ 3415 rc = ena_device_init(adapter, adapter->pdev, &get_feat_ctx, 3416 &adapter->wd_active); 3417 if (rc) { 3418 device_printf(adapter->pdev, 3419 "ENA device init failed! (err: %d)\n", rc); 3420 goto err_dev_free; 3421 } 3422 3423 rc = ena_enable_msix_and_set_admin_interrupts(adapter, 3424 adapter->num_queues); 3425 if (rc) { 3426 device_printf(adapter->pdev, "Enable MSI-X failed\n"); 3427 goto err_com_free; 3428 } 3429 3430 /* If the interface was up before the reset bring it up */ 3431 if (dev_up) { 3432 rc = ena_up(adapter); 3433 if (rc) { 3434 device_printf(adapter->pdev, 3435 "Failed to create I/O queues\n"); 3436 goto err_msix_free; 3437 } 3438 } 3439 3440 callout_reset_sbt(&adapter->timer_service, SBT_1S, SBT_1S, 3441 ena_timer_service, (void *)adapter, 0); 3442 3443 sx_unlock(&adapter->ioctl_sx); 3444 3445 return; 3446 3447err_msix_free: 3448 ena_com_dev_reset(ena_dev); 3449 ena_free_mgmnt_irq(adapter); 3450 ena_disable_msix(adapter); 3451err_com_free: 3452 ena_com_admin_destroy(ena_dev); 3453err_dev_free: 3454 device_printf(adapter->pdev, "ENA reset failed!\n"); 3455 adapter->running = false; 3456 sx_unlock(&adapter->ioctl_sx); 3457} 3458 3459/** 3460 * ena_attach - Device Initialization Routine 3461 * @pdev: device information struct 3462 * 3463 * Returns 0 on success, otherwise on failure. 3464 * 3465 * ena_attach initializes an adapter identified by a device structure. 3466 * The OS initialization, configuring of the adapter private structure, 3467 * and a hardware reset occur. 3468 **/ 3469static int 3470ena_attach(device_t pdev) 3471{ 3472 struct ena_com_dev_get_features_ctx get_feat_ctx; 3473 static int version_printed; 3474 struct ena_adapter *adapter; 3475 struct ena_com_dev *ena_dev = NULL; 3476 uint16_t tx_sgl_size = 0; 3477 uint16_t rx_sgl_size = 0; 3478 int io_queue_num; 3479 int queue_size; 3480 int rc; 3481 struct sysctl_ctx_list *ctx; 3482 struct sysctl_oid_list *children; 3483 3484 adapter = device_get_softc(pdev); 3485 adapter->pdev = pdev; 3486 ctx = device_get_sysctl_ctx(pdev); 3487 children = SYSCTL_CHILDREN(device_get_sysctl_tree(pdev)); 3488 3489 mtx_init(&adapter->global_mtx, "ENA global mtx", NULL, MTX_DEF); 3490 sx_init(&adapter->ioctl_sx, "ENA ioctl sx"); 3491 3492 /* Sysctl calls for Watchdog service */ 3493 SYSCTL_ADD_INT(ctx, children, OID_AUTO, "wd_active", 3494 CTLFLAG_RWTUN, &adapter->wd_active, 0, 3495 "Watchdog is active"); 3496 3497 SYSCTL_ADD_QUAD(ctx, children, OID_AUTO, "keep_alive_timeout", 3498 CTLFLAG_RWTUN, &adapter->keep_alive_timeout, 3499 "Timeout for Keep Alive messages"); 3500 3501 SYSCTL_ADD_QUAD(ctx, children, OID_AUTO, "missing_tx_timeout", 3502 CTLFLAG_RWTUN, &adapter->missing_tx_timeout, 3503 "Timeout for TX completion"); 3504 3505 SYSCTL_ADD_U32(ctx, children, OID_AUTO, "missing_tx_max_queues", 3506 CTLFLAG_RWTUN, &adapter->missing_tx_max_queues, 0, 3507 "Number of TX queues to check per run"); 3508 3509 SYSCTL_ADD_U32(ctx, children, OID_AUTO, "missing_tx_threshold", 3510 CTLFLAG_RWTUN, &adapter->missing_tx_threshold, 0, 3511 "Max number of timeouted packets"); 3512 3513 /* Set up the timer service */ 3514 callout_init_mtx(&adapter->timer_service, &adapter->global_mtx, 0); 3515 adapter->keep_alive_timeout = DEFAULT_KEEP_ALIVE_TO; 3516 adapter->missing_tx_timeout = DEFAULT_TX_CMP_TO; 3517 adapter->missing_tx_max_queues = DEFAULT_TX_MONITORED_QUEUES; 3518 adapter->missing_tx_threshold = DEFAULT_TX_CMP_THRESHOLD; 3519 3520 if (version_printed++ == 0) 3521 device_printf(pdev, "%s\n", ena_version); 3522 3523 rc = ena_allocate_pci_resources(adapter); 3524 if (rc) { 3525 device_printf(pdev, "PCI resource allocation failed!\n"); 3526 ena_free_pci_resources(adapter); 3527 goto err_pci_res; 3528 } 3529 3530 /* Allocate memory for ena_dev structure */ 3531 ena_dev = ENA_MEM_ALLOC(pdev, sizeof(struct ena_com_dev)); 3532 if (!ena_dev) { 3533 device_printf(pdev, "allocating ena_dev failed\n"); 3534 rc = ENOMEM; 3535 goto err_select_region; 3536 } 3537 3538 adapter->ena_dev = ena_dev; 3539 ena_dev->dmadev = pdev; 3540 ena_dev->bus = malloc(sizeof(struct ena_bus), M_DEVBUF, 3541 M_WAITOK | M_ZERO); 3542 3543 /* Store register resources */ 3544 ((struct ena_bus*)(ena_dev->bus))->reg_bar_t = 3545 rman_get_bustag(adapter->registers); 3546 ((struct ena_bus*)(ena_dev->bus))->reg_bar_h = 3547 rman_get_bushandle(adapter->registers); 3548 3549 if (((struct ena_bus*)(ena_dev->bus))->reg_bar_h == 0) { 3550 device_printf(pdev, "failed to pmap registers bar\n"); 3551 rc = ENXIO; 3552 goto err_dev_free; 3553 } 3554 3555 ena_dev->tx_mem_queue_type = ENA_ADMIN_PLACEMENT_POLICY_HOST; 3556 3557 /* Device initialization */ 3558 rc = ena_device_init(adapter, pdev, &get_feat_ctx, &adapter->wd_active); 3559 if (rc) { 3560 device_printf(pdev, "ENA device init failed! (err: %d)\n", rc); 3561 rc = ENXIO; 3562 goto err_bus_free; 3563 } 3564 3565 adapter->keep_alive_timestamp = getsbinuptime(); 3566 3567 adapter->tx_offload_cap = get_feat_ctx.offload.tx; 3568 3569 /* Set for sure that interface is not up */ 3570 adapter->up = false; 3571 3572 memcpy(adapter->mac_addr, get_feat_ctx.dev_attr.mac_addr, 3573 ETHER_ADDR_LEN); 3574 3575 adapter->small_copy_len = 3576 ENA_DEFAULT_SMALL_PACKET_LEN; 3577 3578 /* calculate IO queue number to create */ 3579 io_queue_num = ena_calc_io_queue_num(adapter, &get_feat_ctx); 3580 3581 ENA_ASSERT(io_queue_num > 0, "Invalid queue number: %d\n", 3582 io_queue_num); 3583 adapter->num_queues = io_queue_num; 3584 3585 /* calculatre ring sizes */ 3586 queue_size = ena_calc_queue_size(adapter,&tx_sgl_size, 3587 &rx_sgl_size, &get_feat_ctx); 3588 if ((queue_size <= 0) || (io_queue_num <= 0)) { 3589 rc = ENA_COM_FAULT; 3590 goto err_com_free; 3591 } 3592 3593 adapter->tx_ring_size = queue_size; 3594 adapter->rx_ring_size = queue_size; 3595 3596 adapter->max_tx_sgl_size = tx_sgl_size; 3597 adapter->max_rx_sgl_size = rx_sgl_size; 3598 3599 /* set up dma tags for rx and tx buffers */ 3600 rc = ena_setup_tx_dma_tag(adapter); 3601 if (rc) 3602 goto dma_tx_err; 3603 3604 rc = ena_setup_rx_dma_tag(adapter); 3605 if (rc) 3606 goto dma_rx_err; 3607 3608 /* initialize rings basic information */ 3609 device_printf(pdev, "initalize %d io queues\n", io_queue_num); 3610 rc = ena_init_io_rings(adapter); 3611 if (rc) { 3612 device_printf(pdev,"Error with initialization of IO rings\n"); 3613 goto err_io_init; 3614 } 3615 3616 /* setup network interface */ 3617 rc = ena_setup_ifnet(pdev, adapter, &get_feat_ctx); 3618 if (rc) { 3619 device_printf(pdev,"Error with network interface setup\n"); 3620 goto err_com_free; 3621 } 3622 3623 rc = ena_enable_msix_and_set_admin_interrupts(adapter, io_queue_num); 3624 if (rc) { 3625 device_printf(pdev, 3626 "Failed to enable and set the admin interrupts\n"); 3627 goto err_ifp_free; 3628 } 3629 3630 /* Initialize reset task queue */ 3631 TASK_INIT(&adapter->reset_task, 0, ena_reset_task, adapter); 3632 adapter->reset_tq = taskqueue_create("ena_reset_enqueue", 3633 M_WAITOK | M_ZERO, taskqueue_thread_enqueue, &adapter->reset_tq); 3634 if (adapter->reset_tq == NULL) { 3635 device_printf(adapter->pdev, 3636 "Unable to create reset task queue\n"); 3637 goto err_reset_tq; 3638 } 3639 taskqueue_start_threads(&adapter->reset_tq, 1, PI_NET, 3640 "%s rstq", device_get_nameunit(adapter->pdev)); 3641 3642 /* Initialize task queue responsible for updating hw stats */ 3643 TASK_INIT(&adapter->stats_task, 0, ena_update_hw_stats, adapter); 3644 adapter->stats_tq = taskqueue_create_fast("ena_stats_update", 3645 M_WAITOK | M_ZERO, taskqueue_thread_enqueue, &adapter->stats_tq); 3646 if (adapter->stats_tq == NULL) { 3647 device_printf(adapter->pdev, 3648 "Unable to create taskqueue for updating hw stats\n"); 3649 goto err_stats_tq; 3650 } 3651 taskqueue_start_threads(&adapter->stats_tq, 1, PI_REALTIME, 3652 "%s stats tq", device_get_nameunit(adapter->pdev)); 3653 3654 /* Initialize statistics */ 3655 ena_alloc_counters((counter_u64_t *)&adapter->dev_stats, 3656 sizeof(struct ena_stats_dev)); 3657 ena_update_stats_counters(adapter); 3658 ena_sysctl_add_nodes(adapter); 3659 3660 /* Tell the stack that the interface is not active */ 3661 if_setdrvflagbits(adapter->ifp, IFF_DRV_OACTIVE, IFF_DRV_RUNNING); 3662 3663 adapter->running = true; 3664 return (0); 3665 3666err_stats_tq: 3667 taskqueue_free(adapter->reset_tq); 3668err_reset_tq: 3669 ena_free_mgmnt_irq(adapter); 3670 ena_disable_msix(adapter); 3671err_ifp_free: 3672 if_detach(adapter->ifp); 3673 if_free(adapter->ifp); 3674err_com_free: 3675 ena_free_all_io_rings_resources(adapter); 3676err_io_init: 3677 ena_free_rx_dma_tag(adapter); 3678dma_rx_err: 3679 ena_free_tx_dma_tag(adapter); 3680dma_tx_err: 3681 ena_com_admin_destroy(ena_dev); 3682 ena_com_delete_host_info(ena_dev); 3683err_bus_free: 3684 free(ena_dev->bus, M_DEVBUF); 3685err_dev_free: 3686 free(ena_dev, M_DEVBUF); 3687err_select_region: 3688 ena_free_pci_resources(adapter); 3689err_pci_res: 3690 return (rc); 3691} 3692 3693/** 3694 * ena_detach - Device Removal Routine 3695 * @pdev: device information struct 3696 * 3697 * ena_detach is called by the device subsystem to alert the driver 3698 * that it should release a PCI device. 3699 **/ 3700static int 3701ena_detach(device_t pdev) 3702{ 3703 struct ena_adapter *adapter = device_get_softc(pdev); 3704 struct ena_com_dev *ena_dev = adapter->ena_dev; 3705 int rc; 3706 3707 /* Make sure VLANS are not using driver */ 3708 if (adapter->ifp->if_vlantrunk != NULL) { 3709 device_printf(adapter->pdev ,"VLAN is in use, detach first\n"); 3710 return (EBUSY); 3711 } 3712 3713 /* Free reset task and callout */ 3714 callout_drain(&adapter->timer_service); 3715 while (taskqueue_cancel(adapter->reset_tq, &adapter->reset_task, NULL)) 3716 taskqueue_drain(adapter->reset_tq, &adapter->reset_task); 3717 taskqueue_free(adapter->reset_tq); 3718 3719 sx_xlock(&adapter->ioctl_sx); 3720 ena_down(adapter); 3721 sx_unlock(&adapter->ioctl_sx); 3722 3723 taskqueue_free(adapter->stats_tq); 3724 3725 if (adapter->ifp != NULL) { 3726 ether_ifdetach(adapter->ifp); 3727 if_free(adapter->ifp); 3728 } 3729 3730 ena_free_all_io_rings_resources(adapter); 3731 3732 ena_free_counters((counter_u64_t *)&adapter->dev_stats, 3733 sizeof(struct ena_stats_dev)); 3734 3735 if (adapter->rss_support) 3736 ena_com_rss_destroy(ena_dev); 3737 3738 rc = ena_free_rx_dma_tag(adapter); 3739 if (rc) 3740 device_printf(adapter->pdev, 3741 "Unmapped RX DMA tag associations\n"); 3742 3743 rc = ena_free_tx_dma_tag(adapter); 3744 if (rc) 3745 device_printf(adapter->pdev, 3746 "Unmapped TX DMA tag associations\n"); 3747 3748 /* Reset the device only if the device is running. */ 3749 if (adapter->running) 3750 ena_com_dev_reset(ena_dev); 3751 3752 ena_com_delete_host_info(ena_dev); 3753 3754 ena_com_admin_destroy(ena_dev); 3755 3756 ena_free_irqs(adapter); 3757 3758 ena_com_mmio_reg_read_request_destroy(ena_dev); 3759 3760 ena_free_pci_resources(adapter); 3761 3762 mtx_destroy(&adapter->global_mtx); 3763 sx_destroy(&adapter->ioctl_sx); 3764 3765 if (ena_dev->bus != NULL) 3766 free(ena_dev->bus, M_DEVBUF); 3767 3768 if (ena_dev != NULL) 3769 free(ena_dev, M_DEVBUF); 3770 3771 return (bus_generic_detach(pdev)); 3772} 3773 3774/****************************************************************************** 3775 ******************************** AENQ Handlers ******************************* 3776 *****************************************************************************/ 3777/** 3778 * ena_update_on_link_change: 3779 * Notify the network interface about the change in link status 3780 **/ 3781static void 3782ena_update_on_link_change(void *adapter_data, 3783 struct ena_admin_aenq_entry *aenq_e) 3784{ 3785 struct ena_adapter *adapter = (struct ena_adapter *)adapter_data; 3786 struct ena_admin_aenq_link_change_desc *aenq_desc; 3787 int status; 3788 if_t ifp; 3789 3790 aenq_desc = (struct ena_admin_aenq_link_change_desc *)aenq_e; 3791 ifp = adapter->ifp; 3792 status = aenq_desc->flags & 3793 ENA_ADMIN_AENQ_LINK_CHANGE_DESC_LINK_STATUS_MASK; 3794 3795 if (status != 0) { 3796 device_printf(adapter->pdev, "link is UP\n"); 3797 if_link_state_change(ifp, LINK_STATE_UP); 3798 } else if (status == 0) { 3799 device_printf(adapter->pdev, "link is DOWN\n"); 3800 if_link_state_change(ifp, LINK_STATE_DOWN); 3801 } else { 3802 device_printf(adapter->pdev, "invalid value recvd\n"); 3803 BUG(); 3804 } 3805 3806 adapter->link_status = status; 3807 3808 return; 3809} 3810 3811/** 3812 * This handler will called for unknown event group or unimplemented handlers 3813 **/ 3814static void 3815unimplemented_aenq_handler(void *data, 3816 struct ena_admin_aenq_entry *aenq_e) 3817{ 3818 return; 3819} 3820 3821static struct ena_aenq_handlers aenq_handlers = { 3822 .handlers = { 3823 [ENA_ADMIN_LINK_CHANGE] = ena_update_on_link_change, 3824 [ENA_ADMIN_KEEP_ALIVE] = ena_keep_alive_wd, 3825 }, 3826 .unimplemented_handler = unimplemented_aenq_handler 3827}; 3828 3829/********************************************************************* 3830 * FreeBSD Device Interface Entry Points 3831 *********************************************************************/ 3832 3833static device_method_t ena_methods[] = { 3834 /* Device interface */ 3835 DEVMETHOD(device_probe, ena_probe), 3836 DEVMETHOD(device_attach, ena_attach), 3837 DEVMETHOD(device_detach, ena_detach), 3838 DEVMETHOD_END 3839}; 3840 3841static driver_t ena_driver = { 3842 "ena", ena_methods, sizeof(struct ena_adapter), 3843}; 3844 3845devclass_t ena_devclass; 3846DRIVER_MODULE(ena, pci, ena_driver, ena_devclass, 0, 0); 3847MODULE_DEPEND(ena, pci, 1, 1, 1); 3848MODULE_DEPEND(ena, ether, 1, 1, 1); 3849 3850/*********************************************************************/ 3851