if_vmx.c revision 1.16
1 /* $NetBSD: if_vmx.c,v 1.16 2024/06/29 12:11:12 riastradh Exp $ */ 2 /* $OpenBSD: if_vmx.c,v 1.16 2014/01/22 06:04:17 brad Exp $ */ 3 4 /* 5 * Copyright (c) 2013 Tsubai Masanari 6 * Copyright (c) 2013 Bryan Venteicher <bryanv (at) FreeBSD.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 #include <sys/cdefs.h> 22 __KERNEL_RCSID(0, "$NetBSD: if_vmx.c,v 1.16 2024/06/29 12:11:12 riastradh Exp $"); 23 24 #ifdef _KERNEL_OPT 25 #include "opt_if_vmx.h" 26 #endif 27 28 #include <sys/param.h> 29 #include <sys/cpu.h> 30 #include <sys/kernel.h> 31 #include <sys/kmem.h> 32 #include <sys/bitops.h> 33 #include <sys/bus.h> 34 #include <sys/device.h> 35 #include <sys/mbuf.h> 36 #include <sys/module.h> 37 #include <sys/sockio.h> 38 #include <sys/pcq.h> 39 #include <sys/workqueue.h> 40 #include <sys/interrupt.h> 41 42 #include <net/bpf.h> 43 #include <net/if.h> 44 #include <net/if_ether.h> 45 #include <net/if_media.h> 46 47 #include <netinet/if_inarp.h> 48 #include <netinet/in_systm.h> /* for <netinet/ip.h> */ 49 #include <netinet/in.h> /* for <netinet/ip.h> */ 50 #include <netinet/ip.h> /* for struct ip */ 51 #include <netinet/ip6.h> /* for struct ip6_hdr */ 52 #include <netinet/tcp.h> /* for struct tcphdr */ 53 #include <netinet/udp.h> /* for struct udphdr */ 54 55 #include <dev/pci/pcivar.h> 56 #include <dev/pci/pcireg.h> 57 #include <dev/pci/pcidevs.h> 58 59 #include <dev/pci/if_vmxreg.h> 60 61 #define VMXNET3_DRIVER_VERSION 0x00010000 62 63 /* 64 * Max descriptors per Tx packet. We must limit the size of the 65 * any TSO packets based on the number of segments. 66 */ 67 #define VMXNET3_TX_MAXSEGS 32 68 #define VMXNET3_TX_MAXSIZE (VMXNET3_TX_MAXSEGS * MCLBYTES) 69 70 /* 71 * Maximum support Tx segments size. The length field in the 72 * Tx descriptor is 14 bits. 73 */ 74 #define VMXNET3_TX_MAXSEGSIZE (1 << 14) 75 76 /* 77 * The maximum number of Rx segments we accept. 78 */ 79 #define VMXNET3_MAX_RX_SEGS 0 /* no segments */ 80 81 /* 82 * Predetermined size of the multicast MACs filter table. If the 83 * number of multicast addresses exceeds this size, then the 84 * ALL_MULTI mode is use instead. 85 */ 86 #define VMXNET3_MULTICAST_MAX 32 87 88 /* 89 * Our Tx watchdog timeout. 90 */ 91 #define VMXNET3_WATCHDOG_TIMEOUT 5 92 93 /* 94 * Default value for vmx_intr_{rx,tx}_process_limit which is used for 95 * max number of packets to process for interrupt handler 96 */ 97 #define VMXNET3_RX_INTR_PROCESS_LIMIT 0U 98 #define VMXNET3_TX_INTR_PROCESS_LIMIT 256 99 100 /* 101 * Default value for vmx_{rx,tx}_process_limit which is used for 102 * max number of packets to process for deferred processing 103 */ 104 #define VMXNET3_RX_PROCESS_LIMIT 256 105 #define VMXNET3_TX_PROCESS_LIMIT 256 106 107 #define VMXNET3_WORKQUEUE_PRI PRI_SOFTNET 108 109 /* 110 * IP protocols that we can perform Tx checksum offloading of. 111 */ 112 #define VMXNET3_CSUM_OFFLOAD \ 113 (M_CSUM_TCPv4 | M_CSUM_UDPv4) 114 #define VMXNET3_CSUM_OFFLOAD_IPV6 \ 115 (M_CSUM_TCPv6 | M_CSUM_UDPv6) 116 117 #define VMXNET3_CSUM_ALL_OFFLOAD \ 118 (VMXNET3_CSUM_OFFLOAD | VMXNET3_CSUM_OFFLOAD_IPV6 | M_CSUM_TSOv4 | M_CSUM_TSOv6) 119 120 #define VMXNET3_RXRINGS_PERQ 2 121 122 #define VMXNET3_CORE_LOCK(_sc) mutex_enter((_sc)->vmx_mtx) 123 #define VMXNET3_CORE_UNLOCK(_sc) mutex_exit((_sc)->vmx_mtx) 124 #define VMXNET3_CORE_LOCK_ASSERT(_sc) mutex_owned((_sc)->vmx_mtx) 125 126 #define VMXNET3_RXQ_LOCK(_rxq) mutex_enter((_rxq)->vxrxq_mtx) 127 #define VMXNET3_RXQ_UNLOCK(_rxq) mutex_exit((_rxq)->vxrxq_mtx) 128 #define VMXNET3_RXQ_LOCK_ASSERT(_rxq) \ 129 mutex_owned((_rxq)->vxrxq_mtx) 130 131 #define VMXNET3_TXQ_LOCK(_txq) mutex_enter((_txq)->vxtxq_mtx) 132 #define VMXNET3_TXQ_TRYLOCK(_txq) mutex_tryenter((_txq)->vxtxq_mtx) 133 #define VMXNET3_TXQ_UNLOCK(_txq) mutex_exit((_txq)->vxtxq_mtx) 134 #define VMXNET3_TXQ_LOCK_ASSERT(_txq) \ 135 mutex_owned((_txq)->vxtxq_mtx) 136 137 struct vmxnet3_dma_alloc { 138 bus_addr_t dma_paddr; 139 void *dma_vaddr; 140 bus_dmamap_t dma_map; 141 bus_size_t dma_size; 142 bus_dma_segment_t dma_segs[1]; 143 }; 144 145 struct vmxnet3_txbuf { 146 bus_dmamap_t vtxb_dmamap; 147 struct mbuf *vtxb_m; 148 }; 149 150 struct vmxnet3_txring { 151 struct vmxnet3_txbuf *vxtxr_txbuf; 152 struct vmxnet3_txdesc *vxtxr_txd; 153 u_int vxtxr_head; 154 u_int vxtxr_next; 155 u_int vxtxr_ndesc; 156 int vxtxr_gen; 157 struct vmxnet3_dma_alloc vxtxr_dma; 158 }; 159 160 struct vmxnet3_rxbuf { 161 bus_dmamap_t vrxb_dmamap; 162 struct mbuf *vrxb_m; 163 }; 164 165 struct vmxnet3_rxring { 166 struct vmxnet3_rxbuf *vxrxr_rxbuf; 167 struct vmxnet3_rxdesc *vxrxr_rxd; 168 u_int vxrxr_fill; 169 u_int vxrxr_ndesc; 170 int vxrxr_gen; 171 int vxrxr_rid; 172 struct vmxnet3_dma_alloc vxrxr_dma; 173 bus_dmamap_t vxrxr_spare_dmap; 174 }; 175 176 struct vmxnet3_comp_ring { 177 union { 178 struct vmxnet3_txcompdesc *txcd; 179 struct vmxnet3_rxcompdesc *rxcd; 180 } vxcr_u; 181 u_int vxcr_next; 182 u_int vxcr_ndesc; 183 int vxcr_gen; 184 struct vmxnet3_dma_alloc vxcr_dma; 185 }; 186 187 struct vmxnet3_txq_stats { 188 uint64_t vmtxs_csum; 189 uint64_t vmtxs_tso; 190 uint64_t vmtxs_full; 191 uint64_t vmtxs_offload_failed; 192 }; 193 194 struct vmxnet3_txqueue { 195 kmutex_t *vxtxq_mtx; 196 struct vmxnet3_softc *vxtxq_sc; 197 int vxtxq_watchdog; 198 pcq_t *vxtxq_interq; 199 struct vmxnet3_txring vxtxq_cmd_ring; 200 struct vmxnet3_comp_ring vxtxq_comp_ring; 201 struct vmxnet3_txq_stats vxtxq_stats; 202 struct vmxnet3_txq_shared *vxtxq_ts; 203 char vxtxq_name[16]; 204 205 void *vxtxq_si; 206 207 struct evcnt vxtxq_intr; 208 struct evcnt vxtxq_defer; 209 struct evcnt vxtxq_deferreq; 210 struct evcnt vxtxq_pcqdrop; 211 struct evcnt vxtxq_transmitdef; 212 struct evcnt vxtxq_watchdogto; 213 struct evcnt vxtxq_defragged; 214 struct evcnt vxtxq_defrag_failed; 215 216 bool vxtxq_stopping; 217 }; 218 219 220 struct vmxnet3_rxqueue { 221 kmutex_t *vxrxq_mtx; 222 struct vmxnet3_softc *vxrxq_sc; 223 struct mbuf *vxrxq_mhead; 224 struct mbuf *vxrxq_mtail; 225 struct vmxnet3_rxring vxrxq_cmd_ring[VMXNET3_RXRINGS_PERQ]; 226 struct vmxnet3_comp_ring vxrxq_comp_ring; 227 struct vmxnet3_rxq_shared *vxrxq_rs; 228 char vxrxq_name[16]; 229 230 struct evcnt vxrxq_intr; 231 struct evcnt vxrxq_defer; 232 struct evcnt vxrxq_deferreq; 233 struct evcnt vxrxq_mgetcl_failed; 234 struct evcnt vxrxq_mbuf_load_failed; 235 236 bool vxrxq_stopping; 237 }; 238 239 struct vmxnet3_queue { 240 int vxq_id; 241 int vxq_intr_idx; 242 243 struct vmxnet3_txqueue vxq_txqueue; 244 struct vmxnet3_rxqueue vxq_rxqueue; 245 246 void *vxq_si; 247 bool vxq_workqueue; 248 bool vxq_wq_enqueued; 249 struct work vxq_wq_cookie; 250 }; 251 252 struct vmxnet3_softc { 253 device_t vmx_dev; 254 struct ethercom vmx_ethercom; 255 struct ifmedia vmx_media; 256 struct vmxnet3_driver_shared *vmx_ds; 257 int vmx_flags; 258 #define VMXNET3_FLAG_NO_MSIX (1 << 0) 259 #define VMXNET3_FLAG_RSS (1 << 1) 260 #define VMXNET3_FLAG_ATTACHED (1 << 2) 261 262 struct vmxnet3_queue *vmx_queue; 263 264 struct pci_attach_args *vmx_pa; 265 pci_chipset_tag_t vmx_pc; 266 267 bus_space_tag_t vmx_iot0; 268 bus_space_tag_t vmx_iot1; 269 bus_space_handle_t vmx_ioh0; 270 bus_space_handle_t vmx_ioh1; 271 bus_size_t vmx_ios0; 272 bus_size_t vmx_ios1; 273 bus_dma_tag_t vmx_dmat; 274 275 int vmx_link_active; 276 int vmx_ntxqueues; 277 int vmx_nrxqueues; 278 int vmx_ntxdescs; 279 int vmx_nrxdescs; 280 int vmx_max_rxsegs; 281 282 struct evcnt vmx_event_intr; 283 struct evcnt vmx_event_link; 284 struct evcnt vmx_event_txqerror; 285 struct evcnt vmx_event_rxqerror; 286 struct evcnt vmx_event_dic; 287 struct evcnt vmx_event_debug; 288 289 int vmx_intr_type; 290 int vmx_intr_mask_mode; 291 int vmx_event_intr_idx; 292 int vmx_nintrs; 293 pci_intr_handle_t *vmx_intrs; /* legacy use vmx_intrs[0] */ 294 void *vmx_ihs[VMXNET3_MAX_INTRS]; 295 296 kmutex_t *vmx_mtx; 297 298 int vmx_if_flags; 299 bool vmx_promisc; 300 bool vmx_mcastactive; 301 uint8_t *vmx_mcast; 302 void *vmx_qs; 303 struct vmxnet3_rss_shared *vmx_rss; 304 callout_t vmx_tick; 305 struct vmxnet3_dma_alloc vmx_ds_dma; 306 struct vmxnet3_dma_alloc vmx_qs_dma; 307 struct vmxnet3_dma_alloc vmx_mcast_dma; 308 struct vmxnet3_dma_alloc vmx_rss_dma; 309 int vmx_max_ntxqueues; 310 int vmx_max_nrxqueues; 311 uint8_t vmx_lladdr[ETHER_ADDR_LEN]; 312 313 u_int vmx_rx_intr_process_limit; 314 u_int vmx_tx_intr_process_limit; 315 u_int vmx_rx_process_limit; 316 u_int vmx_tx_process_limit; 317 struct sysctllog *vmx_sysctllog; 318 319 bool vmx_txrx_workqueue; 320 struct workqueue *vmx_queue_wq; 321 322 struct workqueue *vmx_reset_wq; 323 struct work vmx_reset_work; 324 bool vmx_reset_pending; 325 }; 326 327 #define VMXNET3_STAT 328 329 #ifdef VMXNET3_STAT 330 struct { 331 u_int txhead; 332 u_int txdone; 333 u_int maxtxlen; 334 u_int rxdone; 335 u_int rxfill; 336 u_int intr; 337 } vmxstat; 338 #endif 339 340 typedef enum { 341 VMXNET3_BARRIER_RD, 342 VMXNET3_BARRIER_WR, 343 } vmxnet3_barrier_t; 344 345 #define JUMBO_LEN (MCLBYTES - ETHER_ALIGN) /* XXX */ 346 #define DMAADDR(map) ((map)->dm_segs[0].ds_addr) 347 348 #define vtophys(va) 0 /* XXX ok? */ 349 350 static int vmxnet3_match(device_t, cfdata_t, void *); 351 static void vmxnet3_attach(device_t, device_t, void *); 352 static int vmxnet3_detach(device_t, int); 353 354 static int vmxnet3_alloc_pci_resources(struct vmxnet3_softc *); 355 static void vmxnet3_free_pci_resources(struct vmxnet3_softc *); 356 static int vmxnet3_check_version(struct vmxnet3_softc *); 357 static void vmxnet3_check_multiqueue(struct vmxnet3_softc *); 358 359 static int vmxnet3_alloc_msix_interrupts(struct vmxnet3_softc *); 360 static int vmxnet3_alloc_msi_interrupts(struct vmxnet3_softc *); 361 static int vmxnet3_alloc_legacy_interrupts(struct vmxnet3_softc *); 362 static int vmxnet3_alloc_interrupts(struct vmxnet3_softc *); 363 static void vmxnet3_free_interrupts(struct vmxnet3_softc *); 364 365 static int vmxnet3_setup_msix_interrupts(struct vmxnet3_softc *); 366 static int vmxnet3_setup_msi_interrupt(struct vmxnet3_softc *); 367 static int vmxnet3_setup_legacy_interrupt(struct vmxnet3_softc *); 368 static void vmxnet3_set_interrupt_idx(struct vmxnet3_softc *); 369 static int vmxnet3_setup_interrupts(struct vmxnet3_softc *); 370 static int vmxnet3_setup_sysctl(struct vmxnet3_softc *); 371 372 static int vmxnet3_setup_stats(struct vmxnet3_softc *); 373 static void vmxnet3_teardown_stats(struct vmxnet3_softc *); 374 375 static int vmxnet3_init_rxq(struct vmxnet3_softc *, int); 376 static int vmxnet3_init_txq(struct vmxnet3_softc *, int); 377 static int vmxnet3_alloc_rxtx_queues(struct vmxnet3_softc *); 378 static void vmxnet3_destroy_rxq(struct vmxnet3_rxqueue *); 379 static void vmxnet3_destroy_txq(struct vmxnet3_txqueue *); 380 static void vmxnet3_free_rxtx_queues(struct vmxnet3_softc *); 381 382 static int vmxnet3_alloc_shared_data(struct vmxnet3_softc *); 383 static void vmxnet3_free_shared_data(struct vmxnet3_softc *); 384 static int vmxnet3_alloc_txq_data(struct vmxnet3_softc *); 385 static void vmxnet3_free_txq_data(struct vmxnet3_softc *); 386 static int vmxnet3_alloc_rxq_data(struct vmxnet3_softc *); 387 static void vmxnet3_free_rxq_data(struct vmxnet3_softc *); 388 static int vmxnet3_alloc_queue_data(struct vmxnet3_softc *); 389 static void vmxnet3_free_queue_data(struct vmxnet3_softc *); 390 static int vmxnet3_alloc_mcast_table(struct vmxnet3_softc *); 391 static void vmxnet3_free_mcast_table(struct vmxnet3_softc *); 392 static void vmxnet3_init_shared_data(struct vmxnet3_softc *); 393 static void vmxnet3_reinit_rss_shared_data(struct vmxnet3_softc *); 394 static void vmxnet3_reinit_shared_data(struct vmxnet3_softc *); 395 static int vmxnet3_alloc_data(struct vmxnet3_softc *); 396 static void vmxnet3_free_data(struct vmxnet3_softc *); 397 static int vmxnet3_setup_interface(struct vmxnet3_softc *); 398 399 static void vmxnet3_evintr(struct vmxnet3_softc *); 400 static bool vmxnet3_txq_eof(struct vmxnet3_txqueue *, u_int); 401 static int vmxnet3_newbuf(struct vmxnet3_softc *, struct vmxnet3_rxqueue *, 402 struct vmxnet3_rxring *); 403 static void vmxnet3_rxq_eof_discard(struct vmxnet3_rxqueue *, 404 struct vmxnet3_rxring *, int); 405 static void vmxnet3_rxq_discard_chain(struct vmxnet3_rxqueue *); 406 static void vmxnet3_rx_csum(struct vmxnet3_rxcompdesc *, struct mbuf *); 407 static void vmxnet3_rxq_input(struct vmxnet3_rxqueue *, 408 struct vmxnet3_rxcompdesc *, struct mbuf *); 409 static bool vmxnet3_rxq_eof(struct vmxnet3_rxqueue *, u_int); 410 static int vmxnet3_legacy_intr(void *); 411 static int vmxnet3_txrxq_intr(void *); 412 static void vmxnet3_handle_queue(void *); 413 static void vmxnet3_handle_queue_work(struct work *, void *); 414 static int vmxnet3_event_intr(void *); 415 416 static void vmxnet3_txstop(struct vmxnet3_softc *, struct vmxnet3_txqueue *); 417 static void vmxnet3_rxstop(struct vmxnet3_softc *, struct vmxnet3_rxqueue *); 418 static void vmxnet3_stop_locked(struct vmxnet3_softc *); 419 static void vmxnet3_stop_rendezvous(struct vmxnet3_softc *); 420 static void vmxnet3_stop(struct ifnet *, int); 421 422 static void vmxnet3_txinit(struct vmxnet3_softc *, struct vmxnet3_txqueue *); 423 static int vmxnet3_rxinit(struct vmxnet3_softc *, struct vmxnet3_rxqueue *); 424 static int vmxnet3_reinit_queues(struct vmxnet3_softc *); 425 static int vmxnet3_enable_device(struct vmxnet3_softc *); 426 static void vmxnet3_reinit_rxfilters(struct vmxnet3_softc *); 427 static int vmxnet3_reinit(struct vmxnet3_softc *); 428 429 static int vmxnet3_init_locked(struct vmxnet3_softc *); 430 static int vmxnet3_init(struct ifnet *); 431 432 static int vmxnet3_txq_offload_ctx(struct vmxnet3_txqueue *, struct mbuf *, int *, int *); 433 static int vmxnet3_txq_load_mbuf(struct vmxnet3_txqueue *, struct mbuf **, bus_dmamap_t); 434 static void vmxnet3_txq_unload_mbuf(struct vmxnet3_txqueue *, bus_dmamap_t); 435 static int vmxnet3_txq_encap(struct vmxnet3_txqueue *, struct mbuf **); 436 static void vmxnet3_start_locked(struct ifnet *); 437 static void vmxnet3_start(struct ifnet *); 438 static void vmxnet3_transmit_locked(struct ifnet *, struct vmxnet3_txqueue *); 439 static int vmxnet3_transmit(struct ifnet *, struct mbuf *); 440 static void vmxnet3_deferred_transmit(void *); 441 442 static void vmxnet3_set_rxfilter(struct vmxnet3_softc *); 443 static int vmxnet3_ioctl(struct ifnet *, u_long, void *); 444 static int vmxnet3_ifflags_cb(struct ethercom *); 445 446 static int vmxnet3_watchdog(struct vmxnet3_txqueue *); 447 static void vmxnet3_refresh_host_stats(struct vmxnet3_softc *); 448 static void vmxnet3_tick(void *); 449 static void vmxnet3_reset_work(struct work *, void *); 450 static void vmxnet3_if_link_status(struct vmxnet3_softc *); 451 static bool vmxnet3_cmd_link_status(struct ifnet *); 452 static void vmxnet3_ifmedia_status(struct ifnet *, struct ifmediareq *); 453 static int vmxnet3_ifmedia_change(struct ifnet *); 454 static void vmxnet3_set_lladdr(struct vmxnet3_softc *); 455 static void vmxnet3_get_lladdr(struct vmxnet3_softc *); 456 457 static void vmxnet3_enable_all_intrs(struct vmxnet3_softc *); 458 static void vmxnet3_disable_all_intrs(struct vmxnet3_softc *); 459 460 static int vmxnet3_dma_malloc(struct vmxnet3_softc *, bus_size_t, bus_size_t, 461 struct vmxnet3_dma_alloc *); 462 static void vmxnet3_dma_free(struct vmxnet3_softc *, struct vmxnet3_dma_alloc *); 463 464 CFATTACH_DECL3_NEW(vmx, sizeof(struct vmxnet3_softc), 465 vmxnet3_match, vmxnet3_attach, vmxnet3_detach, NULL, NULL, NULL, 0); 466 467 /* round down to the nearest power of 2 */ 468 static int 469 vmxnet3_calc_queue_size(int n) 470 { 471 472 if (__predict_false(n <= 0)) 473 return 1; 474 475 return (1U << (fls32(n) - 1)); 476 } 477 478 static inline void 479 vmxnet3_write_bar0(struct vmxnet3_softc *sc, bus_size_t r, uint32_t v) 480 { 481 482 bus_space_write_4(sc->vmx_iot0, sc->vmx_ioh0, r, v); 483 } 484 485 static inline uint32_t 486 vmxnet3_read_bar1(struct vmxnet3_softc *sc, bus_size_t r) 487 { 488 489 return (bus_space_read_4(sc->vmx_iot1, sc->vmx_ioh1, r)); 490 } 491 492 static inline void 493 vmxnet3_write_bar1(struct vmxnet3_softc *sc, bus_size_t r, uint32_t v) 494 { 495 496 bus_space_write_4(sc->vmx_iot1, sc->vmx_ioh1, r, v); 497 } 498 499 static inline void 500 vmxnet3_write_cmd(struct vmxnet3_softc *sc, uint32_t cmd) 501 { 502 503 vmxnet3_write_bar1(sc, VMXNET3_BAR1_CMD, cmd); 504 } 505 506 static inline uint32_t 507 vmxnet3_read_cmd(struct vmxnet3_softc *sc, uint32_t cmd) 508 { 509 510 vmxnet3_write_cmd(sc, cmd); 511 return (vmxnet3_read_bar1(sc, VMXNET3_BAR1_CMD)); 512 } 513 514 static inline void 515 vmxnet3_enable_intr(struct vmxnet3_softc *sc, int irq) 516 { 517 vmxnet3_write_bar0(sc, VMXNET3_BAR0_IMASK(irq), 0); 518 } 519 520 static inline void 521 vmxnet3_disable_intr(struct vmxnet3_softc *sc, int irq) 522 { 523 vmxnet3_write_bar0(sc, VMXNET3_BAR0_IMASK(irq), 1); 524 } 525 526 static inline void 527 vmxnet3_rxr_increment_fill(struct vmxnet3_rxring *rxr) 528 { 529 530 if (++rxr->vxrxr_fill == rxr->vxrxr_ndesc) { 531 rxr->vxrxr_fill = 0; 532 rxr->vxrxr_gen ^= 1; 533 } 534 } 535 536 static inline int 537 vmxnet3_txring_avail(struct vmxnet3_txring *txr) 538 { 539 int avail = txr->vxtxr_next - txr->vxtxr_head - 1; 540 return (avail < 0 ? (int)txr->vxtxr_ndesc + avail : avail); 541 } 542 543 /* 544 * Since this is a purely paravirtualized device, we do not have 545 * to worry about DMA coherency. But at times, we must make sure 546 * both the compiler and CPU do not reorder memory operations. 547 */ 548 static inline void 549 vmxnet3_barrier(struct vmxnet3_softc *sc, vmxnet3_barrier_t type) 550 { 551 552 switch (type) { 553 case VMXNET3_BARRIER_RD: 554 membar_consumer(); 555 break; 556 case VMXNET3_BARRIER_WR: 557 membar_producer(); 558 break; 559 default: 560 panic("%s: bad barrier type %d", __func__, type); 561 } 562 } 563 564 static int 565 vmxnet3_match(device_t parent, cfdata_t match, void *aux) 566 { 567 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 568 569 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_VMWARE && 570 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_VMWARE_VMXNET3) 571 return 1; 572 573 return 0; 574 } 575 576 static void 577 vmxnet3_attach(device_t parent, device_t self, void *aux) 578 { 579 struct vmxnet3_softc *sc = device_private(self); 580 struct pci_attach_args *pa = aux; 581 pcireg_t preg; 582 int error; 583 int candidate; 584 585 sc->vmx_dev = self; 586 sc->vmx_pa = pa; 587 sc->vmx_pc = pa->pa_pc; 588 if (pci_dma64_available(pa)) 589 sc->vmx_dmat = pa->pa_dmat64; 590 else 591 sc->vmx_dmat = pa->pa_dmat; 592 593 pci_aprint_devinfo_fancy(pa, "Ethernet controller", "vmxnet3", 1); 594 595 preg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 596 preg |= PCI_COMMAND_MASTER_ENABLE; 597 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, preg); 598 599 sc->vmx_mtx = mutex_obj_alloc(MUTEX_DEFAULT, IPL_NET); 600 callout_init(&sc->vmx_tick, CALLOUT_MPSAFE); 601 602 candidate = MIN(MIN(VMXNET3_MAX_TX_QUEUES, VMXNET3_MAX_RX_QUEUES), 603 ncpu); 604 sc->vmx_max_ntxqueues = sc->vmx_max_nrxqueues = 605 vmxnet3_calc_queue_size(candidate); 606 sc->vmx_ntxdescs = 512; 607 sc->vmx_nrxdescs = 256; 608 sc->vmx_max_rxsegs = VMXNET3_MAX_RX_SEGS; 609 610 error = vmxnet3_alloc_pci_resources(sc); 611 if (error) 612 return; 613 614 error = vmxnet3_check_version(sc); 615 if (error) 616 return; 617 618 error = vmxnet3_alloc_rxtx_queues(sc); 619 if (error) 620 return; 621 622 error = vmxnet3_alloc_interrupts(sc); 623 if (error) 624 return; 625 626 vmxnet3_check_multiqueue(sc); 627 628 error = vmxnet3_alloc_data(sc); 629 if (error) 630 return; 631 632 error = vmxnet3_setup_interface(sc); 633 if (error) 634 return; 635 636 error = vmxnet3_setup_interrupts(sc); 637 if (error) 638 return; 639 640 error = vmxnet3_setup_sysctl(sc); 641 if (error) 642 return; 643 644 error = vmxnet3_setup_stats(sc); 645 if (error) 646 return; 647 648 char buf[128]; 649 snprintf(buf, sizeof(buf), "%s_reset", device_xname(sc->vmx_dev)); 650 error = workqueue_create(&sc->vmx_reset_wq, "%s_reset", 651 vmxnet3_reset_work, sc, VMXNET3_WORKQUEUE_PRI, IPL_SOFTCLOCK, 652 WQ_MPSAFE); 653 if (error) { 654 aprint_error_dev(sc->vmx_dev, 655 "failed to create reset workqueue: %d\n", 656 error); 657 return; 658 } 659 660 sc->vmx_flags |= VMXNET3_FLAG_ATTACHED; 661 } 662 663 static int 664 vmxnet3_detach(device_t self, int flags) 665 { 666 struct vmxnet3_softc *sc; 667 struct ifnet *ifp; 668 669 sc = device_private(self); 670 ifp = &sc->vmx_ethercom.ec_if; 671 672 if (sc->vmx_flags & VMXNET3_FLAG_ATTACHED) { 673 VMXNET3_CORE_LOCK(sc); 674 vmxnet3_stop_locked(sc); 675 callout_halt(&sc->vmx_tick, sc->vmx_mtx); 676 callout_destroy(&sc->vmx_tick); 677 VMXNET3_CORE_UNLOCK(sc); 678 679 ether_ifdetach(ifp); 680 if_detach(ifp); 681 ifmedia_fini(&sc->vmx_media); 682 } 683 684 vmxnet3_teardown_stats(sc); 685 sysctl_teardown(&sc->vmx_sysctllog); 686 687 vmxnet3_free_interrupts(sc); 688 689 vmxnet3_free_data(sc); 690 vmxnet3_free_pci_resources(sc); 691 vmxnet3_free_rxtx_queues(sc); 692 693 if (sc->vmx_mtx) 694 mutex_obj_free(sc->vmx_mtx); 695 696 return (0); 697 } 698 699 static int 700 vmxnet3_alloc_pci_resources(struct vmxnet3_softc *sc) 701 { 702 struct pci_attach_args *pa = sc->vmx_pa; 703 pcireg_t memtype; 704 705 memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, PCI_BAR(0)); 706 if (pci_mapreg_map(pa, PCI_BAR(0), memtype, 0, &sc->vmx_iot0, &sc->vmx_ioh0, 707 NULL, &sc->vmx_ios0)) { 708 aprint_error_dev(sc->vmx_dev, "failed to map BAR0\n"); 709 return (ENXIO); 710 } 711 memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, PCI_BAR(1)); 712 if (pci_mapreg_map(pa, PCI_BAR(1), memtype, 0, &sc->vmx_iot1, &sc->vmx_ioh1, 713 NULL, &sc->vmx_ios1)) { 714 aprint_error_dev(sc->vmx_dev, "failed to map BAR1\n"); 715 return (ENXIO); 716 } 717 718 if (!pci_get_capability(pa->pa_pc, pa->pa_tag, PCI_CAP_MSIX, NULL, NULL)) { 719 sc->vmx_flags |= VMXNET3_FLAG_NO_MSIX; 720 return (0); 721 } 722 723 return (0); 724 } 725 726 static void 727 vmxnet3_free_pci_resources(struct vmxnet3_softc *sc) 728 { 729 730 if (sc->vmx_ios0) { 731 bus_space_unmap(sc->vmx_iot0, sc->vmx_ioh0, sc->vmx_ios0); 732 sc->vmx_ios0 = 0; 733 } 734 735 if (sc->vmx_ios1) { 736 bus_space_unmap(sc->vmx_iot1, sc->vmx_ioh1, sc->vmx_ios1); 737 sc->vmx_ios1 = 0; 738 } 739 } 740 741 static int 742 vmxnet3_check_version(struct vmxnet3_softc *sc) 743 { 744 u_int ver; 745 746 ver = vmxnet3_read_bar1(sc, VMXNET3_BAR1_VRRS); 747 if ((ver & 0x1) == 0) { 748 aprint_error_dev(sc->vmx_dev, 749 "unsupported hardware version 0x%x\n", ver); 750 return (ENOTSUP); 751 } 752 vmxnet3_write_bar1(sc, VMXNET3_BAR1_VRRS, 1); 753 754 ver = vmxnet3_read_bar1(sc, VMXNET3_BAR1_UVRS); 755 if ((ver & 0x1) == 0) { 756 aprint_error_dev(sc->vmx_dev, 757 "incompatible UPT version 0x%x\n", ver); 758 return (ENOTSUP); 759 } 760 vmxnet3_write_bar1(sc, VMXNET3_BAR1_UVRS, 1); 761 762 return (0); 763 } 764 765 static void 766 vmxnet3_check_multiqueue(struct vmxnet3_softc *sc) 767 { 768 769 if (sc->vmx_intr_type != VMXNET3_IT_MSIX) 770 goto out; 771 772 /* Just use the maximum configured for now. */ 773 sc->vmx_nrxqueues = sc->vmx_max_nrxqueues; 774 sc->vmx_ntxqueues = sc->vmx_max_ntxqueues; 775 776 if (sc->vmx_nrxqueues > 1) 777 sc->vmx_flags |= VMXNET3_FLAG_RSS; 778 779 return; 780 781 out: 782 sc->vmx_ntxqueues = 1; 783 sc->vmx_nrxqueues = 1; 784 } 785 786 static int 787 vmxnet3_alloc_msix_interrupts(struct vmxnet3_softc *sc) 788 { 789 int required; 790 struct pci_attach_args *pa = sc->vmx_pa; 791 792 if (sc->vmx_flags & VMXNET3_FLAG_NO_MSIX) 793 return (1); 794 795 /* Allocate an additional vector for the events interrupt. */ 796 required = MIN(sc->vmx_max_ntxqueues, sc->vmx_max_nrxqueues) + 1; 797 798 if (pci_msix_count(pa->pa_pc, pa->pa_tag) < required) 799 return (1); 800 801 if (pci_msix_alloc_exact(pa, &sc->vmx_intrs, required) == 0) { 802 sc->vmx_nintrs = required; 803 return (0); 804 } 805 806 return (1); 807 } 808 809 static int 810 vmxnet3_alloc_msi_interrupts(struct vmxnet3_softc *sc) 811 { 812 int nmsi, required; 813 struct pci_attach_args *pa = sc->vmx_pa; 814 815 required = 1; 816 817 nmsi = pci_msi_count(pa->pa_pc, pa->pa_tag); 818 if (nmsi < required) 819 return (1); 820 821 if (pci_msi_alloc_exact(pa, &sc->vmx_intrs, required) == 0) { 822 sc->vmx_nintrs = required; 823 return (0); 824 } 825 826 return (1); 827 } 828 829 static int 830 vmxnet3_alloc_legacy_interrupts(struct vmxnet3_softc *sc) 831 { 832 833 if (pci_intx_alloc(sc->vmx_pa, &sc->vmx_intrs) == 0) { 834 sc->vmx_nintrs = 1; 835 return (0); 836 } 837 838 return (1); 839 } 840 841 static int 842 vmxnet3_alloc_interrupts(struct vmxnet3_softc *sc) 843 { 844 u_int config; 845 int error; 846 847 config = vmxnet3_read_cmd(sc, VMXNET3_CMD_GET_INTRCFG); 848 849 sc->vmx_intr_type = config & 0x03; 850 sc->vmx_intr_mask_mode = (config >> 2) & 0x03; 851 852 switch (sc->vmx_intr_type) { 853 case VMXNET3_IT_AUTO: 854 sc->vmx_intr_type = VMXNET3_IT_MSIX; 855 /* FALLTHROUGH */ 856 case VMXNET3_IT_MSIX: 857 error = vmxnet3_alloc_msix_interrupts(sc); 858 if (error == 0) 859 break; 860 sc->vmx_intr_type = VMXNET3_IT_MSI; 861 /* FALLTHROUGH */ 862 case VMXNET3_IT_MSI: 863 error = vmxnet3_alloc_msi_interrupts(sc); 864 if (error == 0) 865 break; 866 sc->vmx_intr_type = VMXNET3_IT_LEGACY; 867 /* FALLTHROUGH */ 868 case VMXNET3_IT_LEGACY: 869 error = vmxnet3_alloc_legacy_interrupts(sc); 870 if (error == 0) 871 break; 872 /* FALLTHROUGH */ 873 default: 874 sc->vmx_intr_type = -1; 875 aprint_error_dev(sc->vmx_dev, "cannot allocate any interrupt resources\n"); 876 return (ENXIO); 877 } 878 879 return (error); 880 } 881 882 static void 883 vmxnet3_free_interrupts(struct vmxnet3_softc *sc) 884 { 885 pci_chipset_tag_t pc = sc->vmx_pc; 886 int i; 887 888 workqueue_destroy(sc->vmx_queue_wq); 889 for (i = 0; i < sc->vmx_ntxqueues; i++) { 890 struct vmxnet3_queue *vmxq = &sc->vmx_queue[i]; 891 892 softint_disestablish(vmxq->vxq_si); 893 vmxq->vxq_si = NULL; 894 } 895 for (i = 0; i < sc->vmx_nintrs; i++) { 896 pci_intr_disestablish(pc, sc->vmx_ihs[i]); 897 } 898 pci_intr_release(pc, sc->vmx_intrs, sc->vmx_nintrs); 899 } 900 901 static int 902 vmxnet3_setup_msix_interrupts(struct vmxnet3_softc *sc) 903 { 904 pci_chipset_tag_t pc = sc->vmx_pa->pa_pc; 905 struct vmxnet3_queue *vmxq; 906 pci_intr_handle_t *intr; 907 void **ihs; 908 int intr_idx, i, use_queues, error; 909 kcpuset_t *affinity; 910 const char *intrstr; 911 char intrbuf[PCI_INTRSTR_LEN]; 912 char xnamebuf[32]; 913 914 intr = sc->vmx_intrs; 915 intr_idx = 0; 916 ihs = sc->vmx_ihs; 917 918 /* See vmxnet3_alloc_msix_interrupts() */ 919 use_queues = MIN(sc->vmx_max_ntxqueues, sc->vmx_max_nrxqueues); 920 for (i = 0; i < use_queues; i++, intr++, ihs++, intr_idx++) { 921 snprintf(xnamebuf, 32, "%s: txrx %d", device_xname(sc->vmx_dev), i); 922 923 vmxq = &sc->vmx_queue[i]; 924 925 intrstr = pci_intr_string(pc, *intr, intrbuf, sizeof(intrbuf)); 926 927 pci_intr_setattr(pc, intr, PCI_INTR_MPSAFE, true); 928 *ihs = pci_intr_establish_xname(pc, *intr, IPL_NET, 929 vmxnet3_txrxq_intr, vmxq, xnamebuf); 930 if (*ihs == NULL) { 931 aprint_error_dev(sc->vmx_dev, 932 "unable to establish txrx interrupt at %s\n", intrstr); 933 return (-1); 934 } 935 aprint_normal_dev(sc->vmx_dev, "txrx interrupting at %s\n", intrstr); 936 937 kcpuset_create(&affinity, true); 938 kcpuset_set(affinity, intr_idx % ncpu); 939 error = interrupt_distribute(*ihs, affinity, NULL); 940 if (error) { 941 aprint_normal_dev(sc->vmx_dev, 942 "%s cannot be changed affinity, use default CPU\n", 943 intrstr); 944 } 945 kcpuset_destroy(affinity); 946 947 vmxq->vxq_si = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, 948 vmxnet3_handle_queue, vmxq); 949 if (vmxq->vxq_si == NULL) { 950 aprint_error_dev(sc->vmx_dev, 951 "softint_establish for vxq_si failed\n"); 952 return (-1); 953 } 954 955 vmxq->vxq_intr_idx = intr_idx; 956 } 957 snprintf(xnamebuf, MAXCOMLEN, "%s_tx_rx", device_xname(sc->vmx_dev)); 958 error = workqueue_create(&sc->vmx_queue_wq, xnamebuf, 959 vmxnet3_handle_queue_work, sc, VMXNET3_WORKQUEUE_PRI, IPL_NET, 960 WQ_PERCPU | WQ_MPSAFE); 961 if (error) { 962 aprint_error_dev(sc->vmx_dev, "workqueue_create failed\n"); 963 return (-1); 964 } 965 sc->vmx_txrx_workqueue = false; 966 967 intrstr = pci_intr_string(pc, *intr, intrbuf, sizeof(intrbuf)); 968 969 snprintf(xnamebuf, 32, "%s: link", device_xname(sc->vmx_dev)); 970 pci_intr_setattr(pc, intr, PCI_INTR_MPSAFE, true); 971 *ihs = pci_intr_establish_xname(pc, *intr, IPL_NET, 972 vmxnet3_event_intr, sc, xnamebuf); 973 if (*ihs == NULL) { 974 aprint_error_dev(sc->vmx_dev, 975 "unable to establish event interrupt at %s\n", intrstr); 976 return (-1); 977 } 978 aprint_normal_dev(sc->vmx_dev, "event interrupting at %s\n", intrstr); 979 980 sc->vmx_event_intr_idx = intr_idx; 981 982 return (0); 983 } 984 985 static int 986 vmxnet3_setup_msi_interrupt(struct vmxnet3_softc *sc) 987 { 988 pci_chipset_tag_t pc = sc->vmx_pa->pa_pc; 989 pci_intr_handle_t *intr; 990 void **ihs; 991 struct vmxnet3_queue *vmxq; 992 int i; 993 const char *intrstr; 994 char intrbuf[PCI_INTRSTR_LEN]; 995 char xnamebuf[32]; 996 997 intr = &sc->vmx_intrs[0]; 998 ihs = sc->vmx_ihs; 999 vmxq = &sc->vmx_queue[0]; 1000 1001 intrstr = pci_intr_string(pc, *intr, intrbuf, sizeof(intrbuf)); 1002 1003 snprintf(xnamebuf, 32, "%s: msi", device_xname(sc->vmx_dev)); 1004 pci_intr_setattr(pc, intr, PCI_INTR_MPSAFE, true); 1005 *ihs = pci_intr_establish_xname(pc, *intr, IPL_NET, 1006 vmxnet3_legacy_intr, sc, xnamebuf); 1007 if (*ihs == NULL) { 1008 aprint_error_dev(sc->vmx_dev, 1009 "unable to establish interrupt at %s\n", intrstr); 1010 return (-1); 1011 } 1012 aprint_normal_dev(sc->vmx_dev, "interrupting at %s\n", intrstr); 1013 1014 vmxq->vxq_si = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, 1015 vmxnet3_handle_queue, vmxq); 1016 if (vmxq->vxq_si == NULL) { 1017 aprint_error_dev(sc->vmx_dev, 1018 "softint_establish for vxq_si failed\n"); 1019 return (-1); 1020 } 1021 1022 for (i = 0; i < MIN(sc->vmx_nrxqueues, sc->vmx_nrxqueues); i++) 1023 sc->vmx_queue[i].vxq_intr_idx = 0; 1024 sc->vmx_event_intr_idx = 0; 1025 1026 return (0); 1027 } 1028 1029 static int 1030 vmxnet3_setup_legacy_interrupt(struct vmxnet3_softc *sc) 1031 { 1032 pci_chipset_tag_t pc = sc->vmx_pa->pa_pc; 1033 pci_intr_handle_t *intr; 1034 void **ihs; 1035 struct vmxnet3_queue *vmxq; 1036 int i; 1037 const char *intrstr; 1038 char intrbuf[PCI_INTRSTR_LEN]; 1039 char xnamebuf[32]; 1040 1041 intr = &sc->vmx_intrs[0]; 1042 ihs = sc->vmx_ihs; 1043 vmxq = &sc->vmx_queue[0]; 1044 1045 intrstr = pci_intr_string(pc, *intr, intrbuf, sizeof(intrbuf)); 1046 1047 snprintf(xnamebuf, 32, "%s:legacy", device_xname(sc->vmx_dev)); 1048 pci_intr_setattr(pc, intr, PCI_INTR_MPSAFE, true); 1049 *ihs = pci_intr_establish_xname(pc, *intr, IPL_NET, 1050 vmxnet3_legacy_intr, sc, xnamebuf); 1051 if (*ihs == NULL) { 1052 aprint_error_dev(sc->vmx_dev, 1053 "unable to establish interrupt at %s\n", intrstr); 1054 return (-1); 1055 } 1056 aprint_normal_dev(sc->vmx_dev, "interrupting at %s\n", intrstr); 1057 1058 vmxq->vxq_si = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, 1059 vmxnet3_handle_queue, vmxq); 1060 if (vmxq->vxq_si == NULL) { 1061 aprint_error_dev(sc->vmx_dev, 1062 "softint_establish for vxq_si failed\n"); 1063 return (-1); 1064 } 1065 1066 for (i = 0; i < MIN(sc->vmx_nrxqueues, sc->vmx_nrxqueues); i++) 1067 sc->vmx_queue[i].vxq_intr_idx = 0; 1068 sc->vmx_event_intr_idx = 0; 1069 1070 return (0); 1071 } 1072 1073 static void 1074 vmxnet3_set_interrupt_idx(struct vmxnet3_softc *sc) 1075 { 1076 struct vmxnet3_queue *vmxq; 1077 struct vmxnet3_txqueue *txq; 1078 struct vmxnet3_txq_shared *txs; 1079 struct vmxnet3_rxqueue *rxq; 1080 struct vmxnet3_rxq_shared *rxs; 1081 int i; 1082 1083 sc->vmx_ds->evintr = sc->vmx_event_intr_idx; 1084 1085 for (i = 0; i < sc->vmx_ntxqueues; i++) { 1086 vmxq = &sc->vmx_queue[i]; 1087 txq = &vmxq->vxq_txqueue; 1088 txs = txq->vxtxq_ts; 1089 txs->intr_idx = vmxq->vxq_intr_idx; 1090 } 1091 1092 for (i = 0; i < sc->vmx_nrxqueues; i++) { 1093 vmxq = &sc->vmx_queue[i]; 1094 rxq = &vmxq->vxq_rxqueue; 1095 rxs = rxq->vxrxq_rs; 1096 rxs->intr_idx = vmxq->vxq_intr_idx; 1097 } 1098 } 1099 1100 static int 1101 vmxnet3_setup_interrupts(struct vmxnet3_softc *sc) 1102 { 1103 int error; 1104 1105 switch (sc->vmx_intr_type) { 1106 case VMXNET3_IT_MSIX: 1107 error = vmxnet3_setup_msix_interrupts(sc); 1108 break; 1109 case VMXNET3_IT_MSI: 1110 error = vmxnet3_setup_msi_interrupt(sc); 1111 break; 1112 case VMXNET3_IT_LEGACY: 1113 error = vmxnet3_setup_legacy_interrupt(sc); 1114 break; 1115 default: 1116 panic("%s: invalid interrupt type %d", __func__, 1117 sc->vmx_intr_type); 1118 } 1119 1120 if (error == 0) 1121 vmxnet3_set_interrupt_idx(sc); 1122 1123 return (error); 1124 } 1125 1126 static int 1127 vmxnet3_init_rxq(struct vmxnet3_softc *sc, int q) 1128 { 1129 struct vmxnet3_rxqueue *rxq; 1130 struct vmxnet3_rxring *rxr; 1131 int i; 1132 1133 rxq = &sc->vmx_queue[q].vxq_rxqueue; 1134 1135 snprintf(rxq->vxrxq_name, sizeof(rxq->vxrxq_name), "%s-rx%d", 1136 device_xname(sc->vmx_dev), q); 1137 rxq->vxrxq_mtx = mutex_obj_alloc(MUTEX_DEFAULT, IPL_NET /* XXX */); 1138 1139 rxq->vxrxq_sc = sc; 1140 1141 for (i = 0; i < VMXNET3_RXRINGS_PERQ; i++) { 1142 rxr = &rxq->vxrxq_cmd_ring[i]; 1143 rxr->vxrxr_rid = i; 1144 rxr->vxrxr_ndesc = sc->vmx_nrxdescs; 1145 rxr->vxrxr_rxbuf = kmem_zalloc(rxr->vxrxr_ndesc * 1146 sizeof(struct vmxnet3_rxbuf), KM_SLEEP); 1147 1148 rxq->vxrxq_comp_ring.vxcr_ndesc += sc->vmx_nrxdescs; 1149 } 1150 1151 rxq->vxrxq_stopping = true; 1152 1153 return (0); 1154 } 1155 1156 static int 1157 vmxnet3_init_txq(struct vmxnet3_softc *sc, int q) 1158 { 1159 struct vmxnet3_txqueue *txq; 1160 struct vmxnet3_txring *txr; 1161 1162 txq = &sc->vmx_queue[q].vxq_txqueue; 1163 txr = &txq->vxtxq_cmd_ring; 1164 1165 snprintf(txq->vxtxq_name, sizeof(txq->vxtxq_name), "%s-tx%d", 1166 device_xname(sc->vmx_dev), q); 1167 txq->vxtxq_mtx = mutex_obj_alloc(MUTEX_DEFAULT, IPL_NET /* XXX */); 1168 1169 txq->vxtxq_sc = sc; 1170 1171 txq->vxtxq_si = softint_establish(SOFTINT_NET | SOFTINT_MPSAFE, 1172 vmxnet3_deferred_transmit, txq); 1173 if (txq->vxtxq_si == NULL) { 1174 mutex_obj_free(txq->vxtxq_mtx); 1175 aprint_error_dev(sc->vmx_dev, 1176 "softint_establish for vxtxq_si failed\n"); 1177 return ENOMEM; 1178 } 1179 1180 txr->vxtxr_ndesc = sc->vmx_ntxdescs; 1181 txr->vxtxr_txbuf = kmem_zalloc(txr->vxtxr_ndesc * 1182 sizeof(struct vmxnet3_txbuf), KM_SLEEP); 1183 1184 txq->vxtxq_comp_ring.vxcr_ndesc = sc->vmx_ntxdescs; 1185 1186 txq->vxtxq_interq = pcq_create(sc->vmx_ntxdescs, KM_SLEEP); 1187 1188 txq->vxtxq_stopping = true; 1189 1190 return (0); 1191 } 1192 1193 static int 1194 vmxnet3_alloc_rxtx_queues(struct vmxnet3_softc *sc) 1195 { 1196 int i, error, max_nqueues; 1197 1198 KASSERT(!cpu_intr_p()); 1199 KASSERT(!cpu_softintr_p()); 1200 1201 /* 1202 * Only attempt to create multiple queues if MSIX is available. 1203 * This check prevents us from allocating queue structures that 1204 * we will not use. 1205 * 1206 * FreeBSD: 1207 * MSIX is disabled by default because its apparently broken for 1208 * devices passed through by at least ESXi 5.1. 1209 * The hw.pci.honor_msi_blacklist tunable must be set to zero for MSIX. 1210 */ 1211 if (sc->vmx_flags & VMXNET3_FLAG_NO_MSIX) { 1212 sc->vmx_max_nrxqueues = 1; 1213 sc->vmx_max_ntxqueues = 1; 1214 } 1215 1216 max_nqueues = MAX(sc->vmx_max_ntxqueues, sc->vmx_max_nrxqueues); 1217 sc->vmx_queue = kmem_zalloc(sizeof(struct vmxnet3_queue) * max_nqueues, 1218 KM_SLEEP); 1219 1220 for (i = 0; i < max_nqueues; i++) { 1221 struct vmxnet3_queue *vmxq = &sc->vmx_queue[i]; 1222 vmxq->vxq_id = i; 1223 } 1224 1225 for (i = 0; i < sc->vmx_max_nrxqueues; i++) { 1226 error = vmxnet3_init_rxq(sc, i); 1227 if (error) 1228 return (error); 1229 } 1230 1231 for (i = 0; i < sc->vmx_max_ntxqueues; i++) { 1232 error = vmxnet3_init_txq(sc, i); 1233 if (error) 1234 return (error); 1235 } 1236 1237 return (0); 1238 } 1239 1240 static void 1241 vmxnet3_destroy_rxq(struct vmxnet3_rxqueue *rxq) 1242 { 1243 struct vmxnet3_rxring *rxr; 1244 int i; 1245 1246 rxq->vxrxq_sc = NULL; 1247 1248 for (i = 0; i < VMXNET3_RXRINGS_PERQ; i++) { 1249 rxr = &rxq->vxrxq_cmd_ring[i]; 1250 1251 if (rxr->vxrxr_rxbuf != NULL) { 1252 kmem_free(rxr->vxrxr_rxbuf, 1253 rxr->vxrxr_ndesc * sizeof(struct vmxnet3_rxbuf)); 1254 rxr->vxrxr_rxbuf = NULL; 1255 } 1256 } 1257 1258 if (rxq->vxrxq_mtx != NULL) 1259 mutex_obj_free(rxq->vxrxq_mtx); 1260 } 1261 1262 static void 1263 vmxnet3_destroy_txq(struct vmxnet3_txqueue *txq) 1264 { 1265 struct vmxnet3_txring *txr; 1266 struct mbuf *m; 1267 1268 txr = &txq->vxtxq_cmd_ring; 1269 1270 txq->vxtxq_sc = NULL; 1271 1272 softint_disestablish(txq->vxtxq_si); 1273 1274 while ((m = pcq_get(txq->vxtxq_interq)) != NULL) 1275 m_freem(m); 1276 pcq_destroy(txq->vxtxq_interq); 1277 1278 if (txr->vxtxr_txbuf != NULL) { 1279 kmem_free(txr->vxtxr_txbuf, 1280 txr->vxtxr_ndesc * sizeof(struct vmxnet3_txbuf)); 1281 txr->vxtxr_txbuf = NULL; 1282 } 1283 1284 if (txq->vxtxq_mtx != NULL) 1285 mutex_obj_free(txq->vxtxq_mtx); 1286 } 1287 1288 static void 1289 vmxnet3_free_rxtx_queues(struct vmxnet3_softc *sc) 1290 { 1291 int i; 1292 1293 if (sc->vmx_queue != NULL) { 1294 int max_nqueues; 1295 1296 for (i = 0; i < sc->vmx_max_nrxqueues; i++) 1297 vmxnet3_destroy_rxq(&sc->vmx_queue[i].vxq_rxqueue); 1298 1299 for (i = 0; i < sc->vmx_max_ntxqueues; i++) 1300 vmxnet3_destroy_txq(&sc->vmx_queue[i].vxq_txqueue); 1301 1302 max_nqueues = MAX(sc->vmx_max_nrxqueues, sc->vmx_max_ntxqueues); 1303 kmem_free(sc->vmx_queue, 1304 sizeof(struct vmxnet3_queue) * max_nqueues); 1305 } 1306 } 1307 1308 static int 1309 vmxnet3_alloc_shared_data(struct vmxnet3_softc *sc) 1310 { 1311 device_t dev; 1312 uint8_t *kva; 1313 size_t size; 1314 int i, error; 1315 1316 dev = sc->vmx_dev; 1317 1318 size = sizeof(struct vmxnet3_driver_shared); 1319 error = vmxnet3_dma_malloc(sc, size, 1, &sc->vmx_ds_dma); 1320 if (error) { 1321 device_printf(dev, "cannot alloc shared memory\n"); 1322 return (error); 1323 } 1324 sc->vmx_ds = (struct vmxnet3_driver_shared *) sc->vmx_ds_dma.dma_vaddr; 1325 1326 size = sc->vmx_ntxqueues * sizeof(struct vmxnet3_txq_shared) + 1327 sc->vmx_nrxqueues * sizeof(struct vmxnet3_rxq_shared); 1328 error = vmxnet3_dma_malloc(sc, size, 128, &sc->vmx_qs_dma); 1329 if (error) { 1330 device_printf(dev, "cannot alloc queue shared memory\n"); 1331 return (error); 1332 } 1333 sc->vmx_qs = (void *) sc->vmx_qs_dma.dma_vaddr; 1334 kva = sc->vmx_qs; 1335 1336 for (i = 0; i < sc->vmx_ntxqueues; i++) { 1337 sc->vmx_queue[i].vxq_txqueue.vxtxq_ts = 1338 (struct vmxnet3_txq_shared *) kva; 1339 kva += sizeof(struct vmxnet3_txq_shared); 1340 } 1341 for (i = 0; i < sc->vmx_nrxqueues; i++) { 1342 sc->vmx_queue[i].vxq_rxqueue.vxrxq_rs = 1343 (struct vmxnet3_rxq_shared *) kva; 1344 kva += sizeof(struct vmxnet3_rxq_shared); 1345 } 1346 1347 if (sc->vmx_flags & VMXNET3_FLAG_RSS) { 1348 size = sizeof(struct vmxnet3_rss_shared); 1349 error = vmxnet3_dma_malloc(sc, size, 128, &sc->vmx_rss_dma); 1350 if (error) { 1351 device_printf(dev, "cannot alloc rss shared memory\n"); 1352 return (error); 1353 } 1354 sc->vmx_rss = 1355 (struct vmxnet3_rss_shared *) sc->vmx_rss_dma.dma_vaddr; 1356 } 1357 1358 return (0); 1359 } 1360 1361 static void 1362 vmxnet3_free_shared_data(struct vmxnet3_softc *sc) 1363 { 1364 1365 if (sc->vmx_rss != NULL) { 1366 vmxnet3_dma_free(sc, &sc->vmx_rss_dma); 1367 sc->vmx_rss = NULL; 1368 } 1369 1370 if (sc->vmx_qs != NULL) { 1371 vmxnet3_dma_free(sc, &sc->vmx_qs_dma); 1372 sc->vmx_qs = NULL; 1373 } 1374 1375 if (sc->vmx_ds != NULL) { 1376 vmxnet3_dma_free(sc, &sc->vmx_ds_dma); 1377 sc->vmx_ds = NULL; 1378 } 1379 } 1380 1381 static int 1382 vmxnet3_alloc_txq_data(struct vmxnet3_softc *sc) 1383 { 1384 device_t dev; 1385 struct vmxnet3_txqueue *txq; 1386 struct vmxnet3_txring *txr; 1387 struct vmxnet3_comp_ring *txc; 1388 size_t descsz, compsz; 1389 u_int i; 1390 int q, error; 1391 1392 dev = sc->vmx_dev; 1393 1394 for (q = 0; q < sc->vmx_ntxqueues; q++) { 1395 txq = &sc->vmx_queue[q].vxq_txqueue; 1396 txr = &txq->vxtxq_cmd_ring; 1397 txc = &txq->vxtxq_comp_ring; 1398 1399 descsz = txr->vxtxr_ndesc * sizeof(struct vmxnet3_txdesc); 1400 compsz = txr->vxtxr_ndesc * sizeof(struct vmxnet3_txcompdesc); 1401 1402 error = vmxnet3_dma_malloc(sc, descsz, 512, &txr->vxtxr_dma); 1403 if (error) { 1404 device_printf(dev, "cannot alloc Tx descriptors for " 1405 "queue %d error %d\n", q, error); 1406 return (error); 1407 } 1408 txr->vxtxr_txd = 1409 (struct vmxnet3_txdesc *) txr->vxtxr_dma.dma_vaddr; 1410 1411 error = vmxnet3_dma_malloc(sc, compsz, 512, &txc->vxcr_dma); 1412 if (error) { 1413 device_printf(dev, "cannot alloc Tx comp descriptors " 1414 "for queue %d error %d\n", q, error); 1415 return (error); 1416 } 1417 txc->vxcr_u.txcd = 1418 (struct vmxnet3_txcompdesc *) txc->vxcr_dma.dma_vaddr; 1419 1420 for (i = 0; i < txr->vxtxr_ndesc; i++) { 1421 error = bus_dmamap_create(sc->vmx_dmat, VMXNET3_TX_MAXSIZE, 1422 VMXNET3_TX_MAXSEGS, VMXNET3_TX_MAXSEGSIZE, 0, BUS_DMA_NOWAIT, 1423 &txr->vxtxr_txbuf[i].vtxb_dmamap); 1424 if (error) { 1425 device_printf(dev, "unable to create Tx buf " 1426 "dmamap for queue %d idx %d\n", q, i); 1427 return (error); 1428 } 1429 } 1430 } 1431 1432 return (0); 1433 } 1434 1435 static void 1436 vmxnet3_free_txq_data(struct vmxnet3_softc *sc) 1437 { 1438 struct vmxnet3_txqueue *txq; 1439 struct vmxnet3_txring *txr; 1440 struct vmxnet3_comp_ring *txc; 1441 struct vmxnet3_txbuf *txb; 1442 u_int i; 1443 int q; 1444 1445 for (q = 0; q < sc->vmx_ntxqueues; q++) { 1446 txq = &sc->vmx_queue[q].vxq_txqueue; 1447 txr = &txq->vxtxq_cmd_ring; 1448 txc = &txq->vxtxq_comp_ring; 1449 1450 for (i = 0; i < txr->vxtxr_ndesc; i++) { 1451 txb = &txr->vxtxr_txbuf[i]; 1452 if (txb->vtxb_dmamap != NULL) { 1453 bus_dmamap_destroy(sc->vmx_dmat, 1454 txb->vtxb_dmamap); 1455 txb->vtxb_dmamap = NULL; 1456 } 1457 } 1458 1459 if (txc->vxcr_u.txcd != NULL) { 1460 vmxnet3_dma_free(sc, &txc->vxcr_dma); 1461 txc->vxcr_u.txcd = NULL; 1462 } 1463 1464 if (txr->vxtxr_txd != NULL) { 1465 vmxnet3_dma_free(sc, &txr->vxtxr_dma); 1466 txr->vxtxr_txd = NULL; 1467 } 1468 } 1469 } 1470 1471 static int 1472 vmxnet3_alloc_rxq_data(struct vmxnet3_softc *sc) 1473 { 1474 device_t dev; 1475 struct vmxnet3_rxqueue *rxq; 1476 struct vmxnet3_rxring *rxr; 1477 struct vmxnet3_comp_ring *rxc; 1478 int descsz, compsz; 1479 u_int i, j; 1480 int q, error; 1481 1482 dev = sc->vmx_dev; 1483 1484 for (q = 0; q < sc->vmx_nrxqueues; q++) { 1485 rxq = &sc->vmx_queue[q].vxq_rxqueue; 1486 rxc = &rxq->vxrxq_comp_ring; 1487 compsz = 0; 1488 1489 for (i = 0; i < VMXNET3_RXRINGS_PERQ; i++) { 1490 rxr = &rxq->vxrxq_cmd_ring[i]; 1491 1492 descsz = rxr->vxrxr_ndesc * 1493 sizeof(struct vmxnet3_rxdesc); 1494 compsz += rxr->vxrxr_ndesc * 1495 sizeof(struct vmxnet3_rxcompdesc); 1496 1497 error = vmxnet3_dma_malloc(sc, descsz, 512, 1498 &rxr->vxrxr_dma); 1499 if (error) { 1500 device_printf(dev, "cannot allocate Rx " 1501 "descriptors for queue %d/%d error %d\n", 1502 i, q, error); 1503 return (error); 1504 } 1505 rxr->vxrxr_rxd = 1506 (struct vmxnet3_rxdesc *) rxr->vxrxr_dma.dma_vaddr; 1507 } 1508 1509 error = vmxnet3_dma_malloc(sc, compsz, 512, &rxc->vxcr_dma); 1510 if (error) { 1511 device_printf(dev, "cannot alloc Rx comp descriptors " 1512 "for queue %d error %d\n", q, error); 1513 return (error); 1514 } 1515 rxc->vxcr_u.rxcd = 1516 (struct vmxnet3_rxcompdesc *) rxc->vxcr_dma.dma_vaddr; 1517 1518 for (i = 0; i < VMXNET3_RXRINGS_PERQ; i++) { 1519 rxr = &rxq->vxrxq_cmd_ring[i]; 1520 1521 error = bus_dmamap_create(sc->vmx_dmat, JUMBO_LEN, 1, 1522 JUMBO_LEN, 0, BUS_DMA_NOWAIT, 1523 &rxr->vxrxr_spare_dmap); 1524 if (error) { 1525 device_printf(dev, "unable to create spare " 1526 "dmamap for queue %d/%d error %d\n", 1527 q, i, error); 1528 return (error); 1529 } 1530 1531 for (j = 0; j < rxr->vxrxr_ndesc; j++) { 1532 error = bus_dmamap_create(sc->vmx_dmat, JUMBO_LEN, 1, 1533 JUMBO_LEN, 0, BUS_DMA_NOWAIT, 1534 &rxr->vxrxr_rxbuf[j].vrxb_dmamap); 1535 if (error) { 1536 device_printf(dev, "unable to create " 1537 "dmamap for queue %d/%d slot %d " 1538 "error %d\n", 1539 q, i, j, error); 1540 return (error); 1541 } 1542 } 1543 } 1544 } 1545 1546 return (0); 1547 } 1548 1549 static void 1550 vmxnet3_free_rxq_data(struct vmxnet3_softc *sc) 1551 { 1552 struct vmxnet3_rxqueue *rxq; 1553 struct vmxnet3_rxring *rxr; 1554 struct vmxnet3_comp_ring *rxc; 1555 struct vmxnet3_rxbuf *rxb; 1556 u_int i, j; 1557 int q; 1558 1559 for (q = 0; q < sc->vmx_nrxqueues; q++) { 1560 rxq = &sc->vmx_queue[q].vxq_rxqueue; 1561 rxc = &rxq->vxrxq_comp_ring; 1562 1563 for (i = 0; i < VMXNET3_RXRINGS_PERQ; i++) { 1564 rxr = &rxq->vxrxq_cmd_ring[i]; 1565 1566 if (rxr->vxrxr_spare_dmap != NULL) { 1567 bus_dmamap_destroy(sc->vmx_dmat, 1568 rxr->vxrxr_spare_dmap); 1569 rxr->vxrxr_spare_dmap = NULL; 1570 } 1571 1572 for (j = 0; j < rxr->vxrxr_ndesc; j++) { 1573 rxb = &rxr->vxrxr_rxbuf[j]; 1574 if (rxb->vrxb_dmamap != NULL) { 1575 bus_dmamap_destroy(sc->vmx_dmat, 1576 rxb->vrxb_dmamap); 1577 rxb->vrxb_dmamap = NULL; 1578 } 1579 } 1580 } 1581 1582 if (rxc->vxcr_u.rxcd != NULL) { 1583 vmxnet3_dma_free(sc, &rxc->vxcr_dma); 1584 rxc->vxcr_u.rxcd = NULL; 1585 } 1586 1587 for (i = 0; i < VMXNET3_RXRINGS_PERQ; i++) { 1588 rxr = &rxq->vxrxq_cmd_ring[i]; 1589 1590 if (rxr->vxrxr_rxd != NULL) { 1591 vmxnet3_dma_free(sc, &rxr->vxrxr_dma); 1592 rxr->vxrxr_rxd = NULL; 1593 } 1594 } 1595 } 1596 } 1597 1598 static int 1599 vmxnet3_alloc_queue_data(struct vmxnet3_softc *sc) 1600 { 1601 int error; 1602 1603 error = vmxnet3_alloc_txq_data(sc); 1604 if (error) 1605 return (error); 1606 1607 error = vmxnet3_alloc_rxq_data(sc); 1608 if (error) 1609 return (error); 1610 1611 return (0); 1612 } 1613 1614 static void 1615 vmxnet3_free_queue_data(struct vmxnet3_softc *sc) 1616 { 1617 1618 if (sc->vmx_queue != NULL) { 1619 vmxnet3_free_rxq_data(sc); 1620 vmxnet3_free_txq_data(sc); 1621 } 1622 } 1623 1624 static int 1625 vmxnet3_alloc_mcast_table(struct vmxnet3_softc *sc) 1626 { 1627 int error; 1628 1629 error = vmxnet3_dma_malloc(sc, VMXNET3_MULTICAST_MAX * ETHER_ADDR_LEN, 1630 32, &sc->vmx_mcast_dma); 1631 if (error) 1632 device_printf(sc->vmx_dev, "unable to alloc multicast table\n"); 1633 else 1634 sc->vmx_mcast = sc->vmx_mcast_dma.dma_vaddr; 1635 1636 return (error); 1637 } 1638 1639 static void 1640 vmxnet3_free_mcast_table(struct vmxnet3_softc *sc) 1641 { 1642 1643 if (sc->vmx_mcast != NULL) { 1644 vmxnet3_dma_free(sc, &sc->vmx_mcast_dma); 1645 sc->vmx_mcast = NULL; 1646 } 1647 } 1648 1649 static void 1650 vmxnet3_init_shared_data(struct vmxnet3_softc *sc) 1651 { 1652 struct vmxnet3_driver_shared *ds; 1653 struct vmxnet3_txqueue *txq; 1654 struct vmxnet3_txq_shared *txs; 1655 struct vmxnet3_rxqueue *rxq; 1656 struct vmxnet3_rxq_shared *rxs; 1657 int i; 1658 1659 ds = sc->vmx_ds; 1660 1661 /* 1662 * Initialize fields of the shared data that remains the same across 1663 * reinits. Note the shared data is zero'd when allocated. 1664 */ 1665 1666 ds->magic = VMXNET3_REV1_MAGIC; 1667 1668 /* DriverInfo */ 1669 ds->version = VMXNET3_DRIVER_VERSION; 1670 ds->guest = VMXNET3_GOS_FREEBSD | 1671 #ifdef __LP64__ 1672 VMXNET3_GOS_64BIT; 1673 #else 1674 VMXNET3_GOS_32BIT; 1675 #endif 1676 ds->vmxnet3_revision = 1; 1677 ds->upt_version = 1; 1678 1679 /* Misc. conf */ 1680 ds->driver_data = vtophys(sc); 1681 ds->driver_data_len = sizeof(struct vmxnet3_softc); 1682 ds->queue_shared = sc->vmx_qs_dma.dma_paddr; 1683 ds->queue_shared_len = sc->vmx_qs_dma.dma_size; 1684 ds->nrxsg_max = sc->vmx_max_rxsegs; 1685 1686 /* RSS conf */ 1687 if (sc->vmx_flags & VMXNET3_FLAG_RSS) { 1688 ds->rss.version = 1; 1689 ds->rss.paddr = sc->vmx_rss_dma.dma_paddr; 1690 ds->rss.len = sc->vmx_rss_dma.dma_size; 1691 } 1692 1693 /* Interrupt control. */ 1694 ds->automask = sc->vmx_intr_mask_mode == VMXNET3_IMM_AUTO; 1695 ds->nintr = sc->vmx_nintrs; 1696 ds->evintr = sc->vmx_event_intr_idx; 1697 ds->ictrl = VMXNET3_ICTRL_DISABLE_ALL; 1698 1699 for (i = 0; i < sc->vmx_nintrs; i++) 1700 ds->modlevel[i] = UPT1_IMOD_ADAPTIVE; 1701 1702 /* Receive filter. */ 1703 ds->mcast_table = sc->vmx_mcast_dma.dma_paddr; 1704 ds->mcast_tablelen = sc->vmx_mcast_dma.dma_size; 1705 1706 /* Tx queues */ 1707 for (i = 0; i < sc->vmx_ntxqueues; i++) { 1708 txq = &sc->vmx_queue[i].vxq_txqueue; 1709 txs = txq->vxtxq_ts; 1710 1711 txs->cmd_ring = txq->vxtxq_cmd_ring.vxtxr_dma.dma_paddr; 1712 txs->cmd_ring_len = txq->vxtxq_cmd_ring.vxtxr_ndesc; 1713 txs->comp_ring = txq->vxtxq_comp_ring.vxcr_dma.dma_paddr; 1714 txs->comp_ring_len = txq->vxtxq_comp_ring.vxcr_ndesc; 1715 txs->driver_data = vtophys(txq); 1716 txs->driver_data_len = sizeof(struct vmxnet3_txqueue); 1717 } 1718 1719 /* Rx queues */ 1720 for (i = 0; i < sc->vmx_nrxqueues; i++) { 1721 rxq = &sc->vmx_queue[i].vxq_rxqueue; 1722 rxs = rxq->vxrxq_rs; 1723 1724 rxs->cmd_ring[0] = rxq->vxrxq_cmd_ring[0].vxrxr_dma.dma_paddr; 1725 rxs->cmd_ring_len[0] = rxq->vxrxq_cmd_ring[0].vxrxr_ndesc; 1726 rxs->cmd_ring[1] = rxq->vxrxq_cmd_ring[1].vxrxr_dma.dma_paddr; 1727 rxs->cmd_ring_len[1] = rxq->vxrxq_cmd_ring[1].vxrxr_ndesc; 1728 rxs->comp_ring = rxq->vxrxq_comp_ring.vxcr_dma.dma_paddr; 1729 rxs->comp_ring_len = rxq->vxrxq_comp_ring.vxcr_ndesc; 1730 rxs->driver_data = vtophys(rxq); 1731 rxs->driver_data_len = sizeof(struct vmxnet3_rxqueue); 1732 } 1733 } 1734 1735 static void 1736 vmxnet3_reinit_rss_shared_data(struct vmxnet3_softc *sc) 1737 { 1738 /* 1739 * Use the same key as the Linux driver until FreeBSD can do 1740 * RSS (presumably Toeplitz) in software. 1741 */ 1742 static const uint8_t rss_key[UPT1_RSS_MAX_KEY_SIZE] = { 1743 0x3b, 0x56, 0xd1, 0x56, 0x13, 0x4a, 0xe7, 0xac, 1744 0xe8, 0x79, 0x09, 0x75, 0xe8, 0x65, 0x79, 0x28, 1745 0x35, 0x12, 0xb9, 0x56, 0x7c, 0x76, 0x4b, 0x70, 1746 0xd8, 0x56, 0xa3, 0x18, 0x9b, 0x0a, 0xee, 0xf3, 1747 0x96, 0xa6, 0x9f, 0x8f, 0x9e, 0x8c, 0x90, 0xc9, 1748 }; 1749 1750 struct vmxnet3_rss_shared *rss; 1751 int i; 1752 1753 rss = sc->vmx_rss; 1754 1755 rss->hash_type = 1756 UPT1_RSS_HASH_TYPE_IPV4 | UPT1_RSS_HASH_TYPE_TCP_IPV4 | 1757 UPT1_RSS_HASH_TYPE_IPV6 | UPT1_RSS_HASH_TYPE_TCP_IPV6; 1758 rss->hash_func = UPT1_RSS_HASH_FUNC_TOEPLITZ; 1759 rss->hash_key_size = UPT1_RSS_MAX_KEY_SIZE; 1760 rss->ind_table_size = UPT1_RSS_MAX_IND_TABLE_SIZE; 1761 memcpy(rss->hash_key, rss_key, UPT1_RSS_MAX_KEY_SIZE); 1762 1763 for (i = 0; i < UPT1_RSS_MAX_IND_TABLE_SIZE; i++) 1764 rss->ind_table[i] = i % sc->vmx_nrxqueues; 1765 } 1766 1767 static void 1768 vmxnet3_reinit_shared_data(struct vmxnet3_softc *sc) 1769 { 1770 struct ifnet *ifp; 1771 struct vmxnet3_driver_shared *ds; 1772 1773 ifp = &sc->vmx_ethercom.ec_if; 1774 ds = sc->vmx_ds; 1775 1776 ds->mtu = ifp->if_mtu; 1777 ds->ntxqueue = sc->vmx_ntxqueues; 1778 ds->nrxqueue = sc->vmx_nrxqueues; 1779 1780 ds->upt_features = 0; 1781 if (ifp->if_capenable & 1782 (IFCAP_CSUM_IPv4_Rx | IFCAP_CSUM_TCPv4_Rx | IFCAP_CSUM_UDPv4_Rx | 1783 IFCAP_CSUM_TCPv6_Rx | IFCAP_CSUM_UDPv6_Rx)) 1784 ds->upt_features |= UPT1_F_CSUM; 1785 if (sc->vmx_ethercom.ec_capenable & ETHERCAP_VLAN_HWTAGGING) 1786 ds->upt_features |= UPT1_F_VLAN; 1787 1788 if (sc->vmx_flags & VMXNET3_FLAG_RSS) { 1789 ds->upt_features |= UPT1_F_RSS; 1790 vmxnet3_reinit_rss_shared_data(sc); 1791 } 1792 1793 vmxnet3_write_bar1(sc, VMXNET3_BAR1_DSL, sc->vmx_ds_dma.dma_paddr); 1794 vmxnet3_write_bar1(sc, VMXNET3_BAR1_DSH, 1795 (uint64_t) sc->vmx_ds_dma.dma_paddr >> 32); 1796 } 1797 1798 static int 1799 vmxnet3_alloc_data(struct vmxnet3_softc *sc) 1800 { 1801 int error; 1802 1803 error = vmxnet3_alloc_shared_data(sc); 1804 if (error) 1805 return (error); 1806 1807 error = vmxnet3_alloc_queue_data(sc); 1808 if (error) 1809 return (error); 1810 1811 error = vmxnet3_alloc_mcast_table(sc); 1812 if (error) 1813 return (error); 1814 1815 vmxnet3_init_shared_data(sc); 1816 1817 return (0); 1818 } 1819 1820 static void 1821 vmxnet3_free_data(struct vmxnet3_softc *sc) 1822 { 1823 1824 vmxnet3_free_mcast_table(sc); 1825 vmxnet3_free_queue_data(sc); 1826 vmxnet3_free_shared_data(sc); 1827 } 1828 1829 static int 1830 vmxnet3_setup_interface(struct vmxnet3_softc *sc) 1831 { 1832 struct ifnet *ifp = &sc->vmx_ethercom.ec_if; 1833 1834 vmxnet3_get_lladdr(sc); 1835 aprint_normal_dev(sc->vmx_dev, "Ethernet address %s\n", 1836 ether_sprintf(sc->vmx_lladdr)); 1837 vmxnet3_set_lladdr(sc); 1838 1839 strlcpy(ifp->if_xname, device_xname(sc->vmx_dev), IFNAMSIZ); 1840 ifp->if_softc = sc; 1841 ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_SIMPLEX; 1842 ifp->if_extflags = IFEF_MPSAFE; 1843 ifp->if_ioctl = vmxnet3_ioctl; 1844 ifp->if_start = vmxnet3_start; 1845 ifp->if_transmit = vmxnet3_transmit; 1846 ifp->if_watchdog = NULL; 1847 ifp->if_init = vmxnet3_init; 1848 ifp->if_stop = vmxnet3_stop; 1849 sc->vmx_ethercom.ec_if.if_capabilities |=IFCAP_CSUM_IPv4_Rx | 1850 IFCAP_CSUM_TCPv4_Tx | IFCAP_CSUM_TCPv4_Rx | 1851 IFCAP_CSUM_UDPv4_Tx | IFCAP_CSUM_UDPv4_Rx | 1852 IFCAP_CSUM_TCPv6_Tx | IFCAP_CSUM_TCPv6_Rx | 1853 IFCAP_CSUM_UDPv6_Tx | IFCAP_CSUM_UDPv6_Rx; 1854 1855 ifp->if_capenable = ifp->if_capabilities; 1856 1857 sc->vmx_ethercom.ec_if.if_capabilities |= IFCAP_TSOv4 | IFCAP_TSOv6; 1858 1859 sc->vmx_ethercom.ec_capabilities |= 1860 ETHERCAP_VLAN_MTU | ETHERCAP_VLAN_HWTAGGING | ETHERCAP_JUMBO_MTU; 1861 sc->vmx_ethercom.ec_capenable |= ETHERCAP_VLAN_HWTAGGING; 1862 1863 IFQ_SET_MAXLEN(&ifp->if_snd, sc->vmx_ntxdescs); 1864 IFQ_SET_READY(&ifp->if_snd); 1865 1866 /* Initialize ifmedia structures. */ 1867 sc->vmx_ethercom.ec_ifmedia = &sc->vmx_media; 1868 ifmedia_init_with_lock(&sc->vmx_media, IFM_IMASK, vmxnet3_ifmedia_change, 1869 vmxnet3_ifmedia_status, sc->vmx_mtx); 1870 ifmedia_add(&sc->vmx_media, IFM_ETHER | IFM_AUTO, 0, NULL); 1871 ifmedia_add(&sc->vmx_media, IFM_ETHER | IFM_10G_T | IFM_FDX, 0, NULL); 1872 ifmedia_add(&sc->vmx_media, IFM_ETHER | IFM_10G_T, 0, NULL); 1873 ifmedia_add(&sc->vmx_media, IFM_ETHER | IFM_1000_T | IFM_FDX, 0, NULL); 1874 ifmedia_add(&sc->vmx_media, IFM_ETHER | IFM_1000_T, 0, NULL); 1875 ifmedia_set(&sc->vmx_media, IFM_ETHER | IFM_AUTO); 1876 1877 if_attach(ifp); 1878 if_deferred_start_init(ifp, NULL); 1879 ether_ifattach(ifp, sc->vmx_lladdr); 1880 ether_set_ifflags_cb(&sc->vmx_ethercom, vmxnet3_ifflags_cb); 1881 vmxnet3_cmd_link_status(ifp); 1882 1883 /* should set before setting interrupts */ 1884 sc->vmx_rx_intr_process_limit = VMXNET3_RX_INTR_PROCESS_LIMIT; 1885 sc->vmx_rx_process_limit = VMXNET3_RX_PROCESS_LIMIT; 1886 sc->vmx_tx_intr_process_limit = VMXNET3_TX_INTR_PROCESS_LIMIT; 1887 sc->vmx_tx_process_limit = VMXNET3_TX_PROCESS_LIMIT; 1888 1889 return (0); 1890 } 1891 1892 static int 1893 vmxnet3_setup_sysctl(struct vmxnet3_softc *sc) 1894 { 1895 const char *devname; 1896 struct sysctllog **log; 1897 const struct sysctlnode *rnode, *rxnode, *txnode; 1898 int error; 1899 1900 log = &sc->vmx_sysctllog; 1901 devname = device_xname(sc->vmx_dev); 1902 1903 error = sysctl_createv(log, 0, NULL, &rnode, 1904 0, CTLTYPE_NODE, devname, 1905 SYSCTL_DESCR("vmxnet3 information and settings"), 1906 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL); 1907 if (error) 1908 goto out; 1909 error = sysctl_createv(log, 0, &rnode, NULL, 1910 CTLFLAG_READWRITE, CTLTYPE_BOOL, "txrx_workqueue", 1911 SYSCTL_DESCR("Use workqueue for packet processing"), 1912 NULL, 0, &sc->vmx_txrx_workqueue, 0, CTL_CREATE, CTL_EOL); 1913 if (error) 1914 goto out; 1915 1916 error = sysctl_createv(log, 0, &rnode, &rxnode, 1917 0, CTLTYPE_NODE, "rx", 1918 SYSCTL_DESCR("vmxnet3 information and settings for Rx"), 1919 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); 1920 if (error) 1921 goto out; 1922 error = sysctl_createv(log, 0, &rxnode, NULL, 1923 CTLFLAG_READWRITE, CTLTYPE_INT, "intr_process_limit", 1924 SYSCTL_DESCR("max number of Rx packets to process for interrupt processing"), 1925 NULL, 0, &sc->vmx_rx_intr_process_limit, 0, CTL_CREATE, CTL_EOL); 1926 if (error) 1927 goto out; 1928 error = sysctl_createv(log, 0, &rxnode, NULL, 1929 CTLFLAG_READWRITE, CTLTYPE_INT, "process_limit", 1930 SYSCTL_DESCR("max number of Rx packets to process for deferred processing"), 1931 NULL, 0, &sc->vmx_rx_process_limit, 0, CTL_CREATE, CTL_EOL); 1932 if (error) 1933 goto out; 1934 1935 error = sysctl_createv(log, 0, &rnode, &txnode, 1936 0, CTLTYPE_NODE, "tx", 1937 SYSCTL_DESCR("vmxnet3 information and settings for Tx"), 1938 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); 1939 if (error) 1940 goto out; 1941 error = sysctl_createv(log, 0, &txnode, NULL, 1942 CTLFLAG_READWRITE, CTLTYPE_INT, "intr_process_limit", 1943 SYSCTL_DESCR("max number of Tx packets to process for interrupt processing"), 1944 NULL, 0, &sc->vmx_tx_intr_process_limit, 0, CTL_CREATE, CTL_EOL); 1945 if (error) 1946 goto out; 1947 error = sysctl_createv(log, 0, &txnode, NULL, 1948 CTLFLAG_READWRITE, CTLTYPE_INT, "process_limit", 1949 SYSCTL_DESCR("max number of Tx packets to process for deferred processing"), 1950 NULL, 0, &sc->vmx_tx_process_limit, 0, CTL_CREATE, CTL_EOL); 1951 1952 out: 1953 if (error) { 1954 aprint_error_dev(sc->vmx_dev, 1955 "unable to create sysctl node\n"); 1956 sysctl_teardown(log); 1957 } 1958 return error; 1959 } 1960 1961 static int 1962 vmxnet3_setup_stats(struct vmxnet3_softc *sc) 1963 { 1964 struct vmxnet3_queue *vmxq; 1965 struct vmxnet3_txqueue *txq; 1966 struct vmxnet3_rxqueue *rxq; 1967 int i; 1968 1969 for (i = 0; i < sc->vmx_ntxqueues; i++) { 1970 vmxq = &sc->vmx_queue[i]; 1971 txq = &vmxq->vxq_txqueue; 1972 evcnt_attach_dynamic(&txq->vxtxq_intr, EVCNT_TYPE_INTR, 1973 NULL, txq->vxtxq_name, "Interrupt on queue"); 1974 evcnt_attach_dynamic(&txq->vxtxq_defer, EVCNT_TYPE_MISC, 1975 NULL, txq->vxtxq_name, "Handled queue in softint/workqueue"); 1976 evcnt_attach_dynamic(&txq->vxtxq_deferreq, EVCNT_TYPE_MISC, 1977 NULL, txq->vxtxq_name, "Requested in softint/workqueue"); 1978 evcnt_attach_dynamic(&txq->vxtxq_pcqdrop, EVCNT_TYPE_MISC, 1979 NULL, txq->vxtxq_name, "Dropped in pcq"); 1980 evcnt_attach_dynamic(&txq->vxtxq_transmitdef, EVCNT_TYPE_MISC, 1981 NULL, txq->vxtxq_name, "Deferred transmit"); 1982 evcnt_attach_dynamic(&txq->vxtxq_watchdogto, EVCNT_TYPE_MISC, 1983 NULL, txq->vxtxq_name, "Watchdog timeout"); 1984 evcnt_attach_dynamic(&txq->vxtxq_defragged, EVCNT_TYPE_MISC, 1985 NULL, txq->vxtxq_name, "m_defrag successed"); 1986 evcnt_attach_dynamic(&txq->vxtxq_defrag_failed, EVCNT_TYPE_MISC, 1987 NULL, txq->vxtxq_name, "m_defrag failed"); 1988 } 1989 1990 for (i = 0; i < sc->vmx_nrxqueues; i++) { 1991 vmxq = &sc->vmx_queue[i]; 1992 rxq = &vmxq->vxq_rxqueue; 1993 evcnt_attach_dynamic(&rxq->vxrxq_intr, EVCNT_TYPE_INTR, 1994 NULL, rxq->vxrxq_name, "Interrupt on queue"); 1995 evcnt_attach_dynamic(&rxq->vxrxq_defer, EVCNT_TYPE_MISC, 1996 NULL, rxq->vxrxq_name, "Handled queue in softint/workqueue"); 1997 evcnt_attach_dynamic(&rxq->vxrxq_deferreq, EVCNT_TYPE_MISC, 1998 NULL, rxq->vxrxq_name, "Requested in softint/workqueue"); 1999 evcnt_attach_dynamic(&rxq->vxrxq_mgetcl_failed, EVCNT_TYPE_MISC, 2000 NULL, rxq->vxrxq_name, "MCLGET failed"); 2001 evcnt_attach_dynamic(&rxq->vxrxq_mbuf_load_failed, EVCNT_TYPE_MISC, 2002 NULL, rxq->vxrxq_name, "bus_dmamap_load_mbuf failed"); 2003 } 2004 2005 evcnt_attach_dynamic(&sc->vmx_event_intr, EVCNT_TYPE_INTR, 2006 NULL, device_xname(sc->vmx_dev), "Interrupt for other events"); 2007 evcnt_attach_dynamic(&sc->vmx_event_link, EVCNT_TYPE_MISC, 2008 NULL, device_xname(sc->vmx_dev), "Link status event"); 2009 evcnt_attach_dynamic(&sc->vmx_event_txqerror, EVCNT_TYPE_MISC, 2010 NULL, device_xname(sc->vmx_dev), "Tx queue error event"); 2011 evcnt_attach_dynamic(&sc->vmx_event_rxqerror, EVCNT_TYPE_MISC, 2012 NULL, device_xname(sc->vmx_dev), "Rx queue error event"); 2013 evcnt_attach_dynamic(&sc->vmx_event_dic, EVCNT_TYPE_MISC, 2014 NULL, device_xname(sc->vmx_dev), "Device impl change event"); 2015 evcnt_attach_dynamic(&sc->vmx_event_debug, EVCNT_TYPE_MISC, 2016 NULL, device_xname(sc->vmx_dev), "Debug event"); 2017 2018 return 0; 2019 } 2020 2021 static void 2022 vmxnet3_teardown_stats(struct vmxnet3_softc *sc) 2023 { 2024 struct vmxnet3_queue *vmxq; 2025 struct vmxnet3_txqueue *txq; 2026 struct vmxnet3_rxqueue *rxq; 2027 int i; 2028 2029 for (i = 0; i < sc->vmx_ntxqueues; i++) { 2030 vmxq = &sc->vmx_queue[i]; 2031 txq = &vmxq->vxq_txqueue; 2032 evcnt_detach(&txq->vxtxq_intr); 2033 evcnt_detach(&txq->vxtxq_defer); 2034 evcnt_detach(&txq->vxtxq_deferreq); 2035 evcnt_detach(&txq->vxtxq_pcqdrop); 2036 evcnt_detach(&txq->vxtxq_transmitdef); 2037 evcnt_detach(&txq->vxtxq_watchdogto); 2038 evcnt_detach(&txq->vxtxq_defragged); 2039 evcnt_detach(&txq->vxtxq_defrag_failed); 2040 } 2041 2042 for (i = 0; i < sc->vmx_nrxqueues; i++) { 2043 vmxq = &sc->vmx_queue[i]; 2044 rxq = &vmxq->vxq_rxqueue; 2045 evcnt_detach(&rxq->vxrxq_intr); 2046 evcnt_detach(&rxq->vxrxq_defer); 2047 evcnt_detach(&rxq->vxrxq_deferreq); 2048 evcnt_detach(&rxq->vxrxq_mgetcl_failed); 2049 evcnt_detach(&rxq->vxrxq_mbuf_load_failed); 2050 } 2051 2052 evcnt_detach(&sc->vmx_event_intr); 2053 evcnt_detach(&sc->vmx_event_link); 2054 evcnt_detach(&sc->vmx_event_txqerror); 2055 evcnt_detach(&sc->vmx_event_rxqerror); 2056 evcnt_detach(&sc->vmx_event_dic); 2057 evcnt_detach(&sc->vmx_event_debug); 2058 } 2059 2060 static void 2061 vmxnet3_evintr(struct vmxnet3_softc *sc) 2062 { 2063 device_t dev; 2064 struct vmxnet3_txq_shared *ts; 2065 struct vmxnet3_rxq_shared *rs; 2066 uint32_t event; 2067 int reset; 2068 2069 dev = sc->vmx_dev; 2070 reset = 0; 2071 2072 VMXNET3_CORE_LOCK(sc); 2073 2074 /* Clear events. */ 2075 event = sc->vmx_ds->event; 2076 vmxnet3_write_bar1(sc, VMXNET3_BAR1_EVENT, event); 2077 2078 if (event & VMXNET3_EVENT_LINK) { 2079 sc->vmx_event_link.ev_count++; 2080 vmxnet3_if_link_status(sc); 2081 if (sc->vmx_link_active != 0) 2082 if_schedule_deferred_start(&sc->vmx_ethercom.ec_if); 2083 } 2084 2085 if (event & (VMXNET3_EVENT_TQERROR | VMXNET3_EVENT_RQERROR)) { 2086 if (event & VMXNET3_EVENT_TQERROR) 2087 sc->vmx_event_txqerror.ev_count++; 2088 if (event & VMXNET3_EVENT_RQERROR) 2089 sc->vmx_event_rxqerror.ev_count++; 2090 2091 reset = 1; 2092 vmxnet3_read_cmd(sc, VMXNET3_CMD_GET_STATUS); 2093 ts = sc->vmx_queue[0].vxq_txqueue.vxtxq_ts; 2094 if (ts->stopped != 0) 2095 device_printf(dev, "Tx queue error %#x\n", ts->error); 2096 rs = sc->vmx_queue[0].vxq_rxqueue.vxrxq_rs; 2097 if (rs->stopped != 0) 2098 device_printf(dev, "Rx queue error %#x\n", rs->error); 2099 device_printf(dev, "Rx/Tx queue error event ... resetting\n"); 2100 } 2101 2102 if (event & VMXNET3_EVENT_DIC) { 2103 sc->vmx_event_dic.ev_count++; 2104 device_printf(dev, "device implementation change event\n"); 2105 } 2106 if (event & VMXNET3_EVENT_DEBUG) { 2107 sc->vmx_event_debug.ev_count++; 2108 device_printf(dev, "debug event\n"); 2109 } 2110 2111 if (reset != 0) 2112 vmxnet3_init_locked(sc); 2113 2114 VMXNET3_CORE_UNLOCK(sc); 2115 } 2116 2117 static bool 2118 vmxnet3_txq_eof(struct vmxnet3_txqueue *txq, u_int limit) 2119 { 2120 struct vmxnet3_softc *sc; 2121 struct vmxnet3_txring *txr; 2122 struct vmxnet3_comp_ring *txc; 2123 struct vmxnet3_txcompdesc *txcd; 2124 struct vmxnet3_txbuf *txb; 2125 struct ifnet *ifp; 2126 struct mbuf *m; 2127 u_int sop; 2128 bool more = false; 2129 2130 sc = txq->vxtxq_sc; 2131 txr = &txq->vxtxq_cmd_ring; 2132 txc = &txq->vxtxq_comp_ring; 2133 ifp = &sc->vmx_ethercom.ec_if; 2134 2135 VMXNET3_TXQ_LOCK_ASSERT(txq); 2136 2137 net_stat_ref_t nsr = IF_STAT_GETREF(ifp); 2138 for (;;) { 2139 if (limit-- == 0) { 2140 more = true; 2141 break; 2142 } 2143 2144 txcd = &txc->vxcr_u.txcd[txc->vxcr_next]; 2145 if (txcd->gen != txc->vxcr_gen) 2146 break; 2147 vmxnet3_barrier(sc, VMXNET3_BARRIER_RD); 2148 2149 if (++txc->vxcr_next == txc->vxcr_ndesc) { 2150 txc->vxcr_next = 0; 2151 txc->vxcr_gen ^= 1; 2152 } 2153 2154 sop = txr->vxtxr_next; 2155 txb = &txr->vxtxr_txbuf[sop]; 2156 2157 if ((m = txb->vtxb_m) != NULL) { 2158 bus_dmamap_sync(sc->vmx_dmat, txb->vtxb_dmamap, 2159 0, txb->vtxb_dmamap->dm_mapsize, 2160 BUS_DMASYNC_POSTWRITE); 2161 bus_dmamap_unload(sc->vmx_dmat, txb->vtxb_dmamap); 2162 2163 if_statinc_ref(ifp, nsr, if_opackets); 2164 if_statadd_ref(ifp, nsr, if_obytes, m->m_pkthdr.len); 2165 if (m->m_flags & M_MCAST) 2166 if_statinc_ref(ifp, nsr, if_omcasts); 2167 2168 m_freem(m); 2169 txb->vtxb_m = NULL; 2170 } 2171 2172 txr->vxtxr_next = (txcd->eop_idx + 1) % txr->vxtxr_ndesc; 2173 } 2174 IF_STAT_PUTREF(ifp); 2175 2176 if (txr->vxtxr_head == txr->vxtxr_next) 2177 txq->vxtxq_watchdog = 0; 2178 2179 return more; 2180 } 2181 2182 static int 2183 vmxnet3_newbuf(struct vmxnet3_softc *sc, struct vmxnet3_rxqueue *rxq, 2184 struct vmxnet3_rxring *rxr) 2185 { 2186 struct mbuf *m; 2187 struct vmxnet3_rxdesc *rxd; 2188 struct vmxnet3_rxbuf *rxb; 2189 bus_dma_tag_t tag; 2190 bus_dmamap_t dmap; 2191 int idx, btype, error; 2192 2193 tag = sc->vmx_dmat; 2194 dmap = rxr->vxrxr_spare_dmap; 2195 idx = rxr->vxrxr_fill; 2196 rxd = &rxr->vxrxr_rxd[idx]; 2197 rxb = &rxr->vxrxr_rxbuf[idx]; 2198 2199 /* Don't allocate buffers for ring 2 for now. */ 2200 if (rxr->vxrxr_rid != 0) 2201 return -1; 2202 btype = VMXNET3_BTYPE_HEAD; 2203 2204 MGETHDR(m, M_DONTWAIT, MT_DATA); 2205 if (m == NULL) 2206 return (ENOBUFS); 2207 2208 MCLGET(m, M_DONTWAIT); 2209 if ((m->m_flags & M_EXT) == 0) { 2210 rxq->vxrxq_mgetcl_failed.ev_count++; 2211 m_freem(m); 2212 return (ENOBUFS); 2213 } 2214 2215 m->m_pkthdr.len = m->m_len = JUMBO_LEN; 2216 m_adj(m, ETHER_ALIGN); 2217 2218 error = bus_dmamap_load_mbuf(sc->vmx_dmat, dmap, m, BUS_DMA_NOWAIT); 2219 if (error) { 2220 m_freem(m); 2221 rxq->vxrxq_mbuf_load_failed.ev_count++; 2222 return (error); 2223 } 2224 2225 if (rxb->vrxb_m != NULL) { 2226 bus_dmamap_sync(tag, rxb->vrxb_dmamap, 2227 0, rxb->vrxb_dmamap->dm_mapsize, 2228 BUS_DMASYNC_POSTREAD); 2229 bus_dmamap_unload(tag, rxb->vrxb_dmamap); 2230 } 2231 2232 rxr->vxrxr_spare_dmap = rxb->vrxb_dmamap; 2233 rxb->vrxb_dmamap = dmap; 2234 rxb->vrxb_m = m; 2235 2236 rxd->addr = DMAADDR(dmap); 2237 rxd->len = m->m_pkthdr.len; 2238 rxd->btype = btype; 2239 rxd->gen = rxr->vxrxr_gen; 2240 2241 vmxnet3_rxr_increment_fill(rxr); 2242 return (0); 2243 } 2244 2245 static void 2246 vmxnet3_rxq_eof_discard(struct vmxnet3_rxqueue *rxq, 2247 struct vmxnet3_rxring *rxr, int idx) 2248 { 2249 struct vmxnet3_rxdesc *rxd; 2250 2251 rxd = &rxr->vxrxr_rxd[idx]; 2252 rxd->gen = rxr->vxrxr_gen; 2253 vmxnet3_rxr_increment_fill(rxr); 2254 } 2255 2256 static void 2257 vmxnet3_rxq_discard_chain(struct vmxnet3_rxqueue *rxq) 2258 { 2259 struct vmxnet3_softc *sc; 2260 struct vmxnet3_rxring *rxr; 2261 struct vmxnet3_comp_ring *rxc; 2262 struct vmxnet3_rxcompdesc *rxcd; 2263 int idx, eof; 2264 2265 sc = rxq->vxrxq_sc; 2266 rxc = &rxq->vxrxq_comp_ring; 2267 2268 do { 2269 rxcd = &rxc->vxcr_u.rxcd[rxc->vxcr_next]; 2270 if (rxcd->gen != rxc->vxcr_gen) 2271 break; /* Not expected. */ 2272 vmxnet3_barrier(sc, VMXNET3_BARRIER_RD); 2273 2274 if (++rxc->vxcr_next == rxc->vxcr_ndesc) { 2275 rxc->vxcr_next = 0; 2276 rxc->vxcr_gen ^= 1; 2277 } 2278 2279 idx = rxcd->rxd_idx; 2280 eof = rxcd->eop; 2281 if (rxcd->qid < sc->vmx_nrxqueues) 2282 rxr = &rxq->vxrxq_cmd_ring[0]; 2283 else 2284 rxr = &rxq->vxrxq_cmd_ring[1]; 2285 vmxnet3_rxq_eof_discard(rxq, rxr, idx); 2286 } while (!eof); 2287 } 2288 2289 static void 2290 vmxnet3_rx_csum(struct vmxnet3_rxcompdesc *rxcd, struct mbuf *m) 2291 { 2292 if (rxcd->no_csum) 2293 return; 2294 2295 if (rxcd->ipv4) { 2296 m->m_pkthdr.csum_flags |= M_CSUM_IPv4; 2297 if (rxcd->ipcsum_ok == 0) 2298 m->m_pkthdr.csum_flags |= M_CSUM_IPv4_BAD; 2299 } 2300 2301 if (rxcd->fragment) 2302 return; 2303 2304 if (rxcd->tcp) { 2305 m->m_pkthdr.csum_flags |= 2306 rxcd->ipv4 ? M_CSUM_TCPv4 : M_CSUM_TCPv6; 2307 if ((rxcd->csum_ok) == 0) 2308 m->m_pkthdr.csum_flags |= M_CSUM_TCP_UDP_BAD; 2309 } 2310 2311 if (rxcd->udp) { 2312 m->m_pkthdr.csum_flags |= 2313 rxcd->ipv4 ? M_CSUM_UDPv4 : M_CSUM_UDPv6 ; 2314 if ((rxcd->csum_ok) == 0) 2315 m->m_pkthdr.csum_flags |= M_CSUM_TCP_UDP_BAD; 2316 } 2317 } 2318 2319 static void 2320 vmxnet3_rxq_input(struct vmxnet3_rxqueue *rxq, 2321 struct vmxnet3_rxcompdesc *rxcd, struct mbuf *m) 2322 { 2323 struct vmxnet3_softc *sc; 2324 struct ifnet *ifp; 2325 2326 sc = rxq->vxrxq_sc; 2327 ifp = &sc->vmx_ethercom.ec_if; 2328 2329 if (rxcd->error) { 2330 if_statinc(ifp, if_ierrors); 2331 m_freem(m); 2332 return; 2333 } 2334 2335 if (!rxcd->no_csum) 2336 vmxnet3_rx_csum(rxcd, m); 2337 if (rxcd->vlan) 2338 vlan_set_tag(m, rxcd->vtag); 2339 2340 net_stat_ref_t nsr = IF_STAT_GETREF(ifp); 2341 if_statinc_ref(ifp, nsr, if_ipackets); 2342 if_statadd_ref(ifp, nsr, if_ibytes, m->m_pkthdr.len); 2343 IF_STAT_PUTREF(ifp); 2344 2345 if_percpuq_enqueue(ifp->if_percpuq, m); 2346 } 2347 2348 static bool 2349 vmxnet3_rxq_eof(struct vmxnet3_rxqueue *rxq, u_int limit) 2350 { 2351 struct vmxnet3_softc *sc; 2352 struct ifnet *ifp; 2353 struct vmxnet3_rxring *rxr; 2354 struct vmxnet3_comp_ring *rxc; 2355 struct vmxnet3_rxdesc *rxd __diagused; 2356 struct vmxnet3_rxcompdesc *rxcd; 2357 struct mbuf *m, *m_head, *m_tail; 2358 u_int idx, length; 2359 bool more = false; 2360 2361 sc = rxq->vxrxq_sc; 2362 ifp = &sc->vmx_ethercom.ec_if; 2363 rxc = &rxq->vxrxq_comp_ring; 2364 2365 VMXNET3_RXQ_LOCK_ASSERT(rxq); 2366 2367 if (rxq->vxrxq_stopping) 2368 return more; 2369 2370 m_head = rxq->vxrxq_mhead; 2371 rxq->vxrxq_mhead = NULL; 2372 m_tail = rxq->vxrxq_mtail; 2373 rxq->vxrxq_mtail = NULL; 2374 KASSERT(m_head == NULL || m_tail != NULL); 2375 2376 for (;;) { 2377 if (limit-- == 0) { 2378 more = true; 2379 break; 2380 } 2381 2382 rxcd = &rxc->vxcr_u.rxcd[rxc->vxcr_next]; 2383 if (rxcd->gen != rxc->vxcr_gen) { 2384 rxq->vxrxq_mhead = m_head; 2385 rxq->vxrxq_mtail = m_tail; 2386 break; 2387 } 2388 vmxnet3_barrier(sc, VMXNET3_BARRIER_RD); 2389 2390 if (++rxc->vxcr_next == rxc->vxcr_ndesc) { 2391 rxc->vxcr_next = 0; 2392 rxc->vxcr_gen ^= 1; 2393 } 2394 2395 idx = rxcd->rxd_idx; 2396 length = rxcd->len; 2397 if (rxcd->qid < sc->vmx_nrxqueues) 2398 rxr = &rxq->vxrxq_cmd_ring[0]; 2399 else 2400 rxr = &rxq->vxrxq_cmd_ring[1]; 2401 rxd = &rxr->vxrxr_rxd[idx]; 2402 2403 m = rxr->vxrxr_rxbuf[idx].vrxb_m; 2404 KASSERT(m != NULL); 2405 2406 /* 2407 * The host may skip descriptors. We detect this when this 2408 * descriptor does not match the previous fill index. Catch 2409 * up with the host now. 2410 */ 2411 if (__predict_false(rxr->vxrxr_fill != idx)) { 2412 while (rxr->vxrxr_fill != idx) { 2413 rxr->vxrxr_rxd[rxr->vxrxr_fill].gen = 2414 rxr->vxrxr_gen; 2415 vmxnet3_rxr_increment_fill(rxr); 2416 } 2417 } 2418 2419 if (rxcd->sop) { 2420 /* start of frame w/o head buffer */ 2421 KASSERT(rxd->btype == VMXNET3_BTYPE_HEAD); 2422 /* start of frame not in ring 0 */ 2423 KASSERT(rxr == &rxq->vxrxq_cmd_ring[0]); 2424 /* duplicate start of frame? */ 2425 KASSERT(m_head == NULL); 2426 2427 if (length == 0) { 2428 /* Just ignore this descriptor. */ 2429 vmxnet3_rxq_eof_discard(rxq, rxr, idx); 2430 goto nextp; 2431 } 2432 2433 if (vmxnet3_newbuf(sc, rxq, rxr) != 0) { 2434 if_statinc(ifp, if_iqdrops); 2435 vmxnet3_rxq_eof_discard(rxq, rxr, idx); 2436 if (!rxcd->eop) 2437 vmxnet3_rxq_discard_chain(rxq); 2438 goto nextp; 2439 } 2440 2441 m_set_rcvif(m, ifp); 2442 m->m_pkthdr.len = m->m_len = length; 2443 m->m_pkthdr.csum_flags = 0; 2444 m_head = m_tail = m; 2445 2446 } else { 2447 /* non start of frame w/o body buffer */ 2448 KASSERT(rxd->btype == VMXNET3_BTYPE_BODY); 2449 /* frame not started? */ 2450 KASSERT(m_head != NULL); 2451 2452 if (vmxnet3_newbuf(sc, rxq, rxr) != 0) { 2453 if_statinc(ifp, if_iqdrops); 2454 vmxnet3_rxq_eof_discard(rxq, rxr, idx); 2455 if (!rxcd->eop) 2456 vmxnet3_rxq_discard_chain(rxq); 2457 m_freem(m_head); 2458 m_head = m_tail = NULL; 2459 goto nextp; 2460 } 2461 2462 m->m_len = length; 2463 m_head->m_pkthdr.len += length; 2464 m_tail->m_next = m; 2465 m_tail = m; 2466 } 2467 2468 if (rxcd->eop) { 2469 vmxnet3_rxq_input(rxq, rxcd, m_head); 2470 m_head = m_tail = NULL; 2471 2472 /* Must recheck after dropping the Rx lock. */ 2473 if (rxq->vxrxq_stopping) 2474 break; 2475 } 2476 2477 nextp: 2478 if (__predict_false(rxq->vxrxq_rs->update_rxhead)) { 2479 int qid = rxcd->qid; 2480 bus_size_t r; 2481 2482 idx = (idx + 1) % rxr->vxrxr_ndesc; 2483 if (qid >= sc->vmx_nrxqueues) { 2484 qid -= sc->vmx_nrxqueues; 2485 r = VMXNET3_BAR0_RXH2(qid); 2486 } else 2487 r = VMXNET3_BAR0_RXH1(qid); 2488 vmxnet3_write_bar0(sc, r, idx); 2489 } 2490 } 2491 2492 return more; 2493 } 2494 2495 static inline void 2496 vmxnet3_sched_handle_queue(struct vmxnet3_softc *sc, struct vmxnet3_queue *vmxq) 2497 { 2498 2499 if (vmxq->vxq_workqueue) { 2500 /* 2501 * When this function is called, "vmxq" is owned by one CPU. 2502 * so, atomic operation is not required here. 2503 */ 2504 if (!vmxq->vxq_wq_enqueued) { 2505 vmxq->vxq_wq_enqueued = true; 2506 workqueue_enqueue(sc->vmx_queue_wq, 2507 &vmxq->vxq_wq_cookie, curcpu()); 2508 } 2509 } else { 2510 softint_schedule(vmxq->vxq_si); 2511 } 2512 } 2513 2514 static int 2515 vmxnet3_legacy_intr(void *xsc) 2516 { 2517 struct vmxnet3_softc *sc; 2518 struct vmxnet3_queue *vmxq; 2519 struct vmxnet3_txqueue *txq; 2520 struct vmxnet3_rxqueue *rxq; 2521 u_int txlimit, rxlimit; 2522 bool txmore, rxmore; 2523 2524 sc = xsc; 2525 vmxq = &sc->vmx_queue[0]; 2526 txq = &vmxq->vxq_txqueue; 2527 rxq = &vmxq->vxq_rxqueue; 2528 txlimit = sc->vmx_tx_intr_process_limit; 2529 rxlimit = sc->vmx_rx_intr_process_limit; 2530 2531 if (sc->vmx_intr_type == VMXNET3_IT_LEGACY) { 2532 if (vmxnet3_read_bar1(sc, VMXNET3_BAR1_INTR) == 0) 2533 return (0); 2534 } 2535 if (sc->vmx_intr_mask_mode == VMXNET3_IMM_ACTIVE) 2536 vmxnet3_disable_all_intrs(sc); 2537 2538 if (sc->vmx_ds->event != 0) 2539 vmxnet3_evintr(sc); 2540 2541 VMXNET3_TXQ_LOCK(txq); 2542 txmore = vmxnet3_txq_eof(txq, txlimit); 2543 VMXNET3_TXQ_UNLOCK(txq); 2544 2545 VMXNET3_RXQ_LOCK(rxq); 2546 rxmore = vmxnet3_rxq_eof(rxq, rxlimit); 2547 VMXNET3_RXQ_UNLOCK(rxq); 2548 2549 if (txmore || rxmore) 2550 vmxnet3_sched_handle_queue(sc, vmxq); 2551 else { 2552 if_schedule_deferred_start(&sc->vmx_ethercom.ec_if); 2553 vmxnet3_enable_all_intrs(sc); 2554 } 2555 2556 return (1); 2557 } 2558 2559 static int 2560 vmxnet3_txrxq_intr(void *xvmxq) 2561 { 2562 struct vmxnet3_softc *sc; 2563 struct vmxnet3_queue *vmxq; 2564 struct vmxnet3_txqueue *txq; 2565 struct vmxnet3_rxqueue *rxq; 2566 u_int txlimit, rxlimit; 2567 bool txmore, rxmore; 2568 2569 vmxq = xvmxq; 2570 txq = &vmxq->vxq_txqueue; 2571 rxq = &vmxq->vxq_rxqueue; 2572 sc = txq->vxtxq_sc; 2573 txlimit = sc->vmx_tx_intr_process_limit; 2574 rxlimit = sc->vmx_rx_intr_process_limit; 2575 vmxq->vxq_workqueue = sc->vmx_txrx_workqueue; 2576 2577 if (sc->vmx_intr_mask_mode == VMXNET3_IMM_ACTIVE) 2578 vmxnet3_disable_intr(sc, vmxq->vxq_intr_idx); 2579 2580 VMXNET3_TXQ_LOCK(txq); 2581 txq->vxtxq_intr.ev_count++; 2582 txmore = vmxnet3_txq_eof(txq, txlimit); 2583 VMXNET3_TXQ_UNLOCK(txq); 2584 2585 VMXNET3_RXQ_LOCK(rxq); 2586 rxq->vxrxq_intr.ev_count++; 2587 rxmore = vmxnet3_rxq_eof(rxq, rxlimit); 2588 VMXNET3_RXQ_UNLOCK(rxq); 2589 2590 if (txmore || rxmore) 2591 vmxnet3_sched_handle_queue(sc, vmxq); 2592 else { 2593 /* for ALTQ */ 2594 if (vmxq->vxq_id == 0) 2595 if_schedule_deferred_start(&sc->vmx_ethercom.ec_if); 2596 softint_schedule(txq->vxtxq_si); 2597 2598 vmxnet3_enable_intr(sc, vmxq->vxq_intr_idx); 2599 } 2600 2601 return (1); 2602 } 2603 2604 static void 2605 vmxnet3_handle_queue(void *xvmxq) 2606 { 2607 struct vmxnet3_softc *sc; 2608 struct vmxnet3_queue *vmxq; 2609 struct vmxnet3_txqueue *txq; 2610 struct vmxnet3_rxqueue *rxq; 2611 u_int txlimit, rxlimit; 2612 bool txmore, rxmore; 2613 2614 vmxq = xvmxq; 2615 txq = &vmxq->vxq_txqueue; 2616 rxq = &vmxq->vxq_rxqueue; 2617 sc = txq->vxtxq_sc; 2618 txlimit = sc->vmx_tx_process_limit; 2619 rxlimit = sc->vmx_rx_process_limit; 2620 2621 VMXNET3_TXQ_LOCK(txq); 2622 txq->vxtxq_defer.ev_count++; 2623 txmore = vmxnet3_txq_eof(txq, txlimit); 2624 if (txmore) 2625 txq->vxtxq_deferreq.ev_count++; 2626 /* for ALTQ */ 2627 if (vmxq->vxq_id == 0) 2628 if_schedule_deferred_start(&sc->vmx_ethercom.ec_if); 2629 softint_schedule(txq->vxtxq_si); 2630 VMXNET3_TXQ_UNLOCK(txq); 2631 2632 VMXNET3_RXQ_LOCK(rxq); 2633 rxq->vxrxq_defer.ev_count++; 2634 rxmore = vmxnet3_rxq_eof(rxq, rxlimit); 2635 if (rxmore) 2636 rxq->vxrxq_deferreq.ev_count++; 2637 VMXNET3_RXQ_UNLOCK(rxq); 2638 2639 if (txmore || rxmore) 2640 vmxnet3_sched_handle_queue(sc, vmxq); 2641 else 2642 vmxnet3_enable_intr(sc, vmxq->vxq_intr_idx); 2643 } 2644 2645 static void 2646 vmxnet3_handle_queue_work(struct work *wk, void *context) 2647 { 2648 struct vmxnet3_queue *vmxq; 2649 2650 vmxq = container_of(wk, struct vmxnet3_queue, vxq_wq_cookie); 2651 vmxq->vxq_wq_enqueued = false; 2652 vmxnet3_handle_queue(vmxq); 2653 } 2654 2655 static int 2656 vmxnet3_event_intr(void *xsc) 2657 { 2658 struct vmxnet3_softc *sc; 2659 2660 sc = xsc; 2661 2662 if (sc->vmx_intr_mask_mode == VMXNET3_IMM_ACTIVE) 2663 vmxnet3_disable_intr(sc, sc->vmx_event_intr_idx); 2664 2665 sc->vmx_event_intr.ev_count++; 2666 2667 if (sc->vmx_ds->event != 0) 2668 vmxnet3_evintr(sc); 2669 2670 vmxnet3_enable_intr(sc, sc->vmx_event_intr_idx); 2671 2672 return (1); 2673 } 2674 2675 static void 2676 vmxnet3_txstop(struct vmxnet3_softc *sc, struct vmxnet3_txqueue *txq) 2677 { 2678 struct vmxnet3_txring *txr; 2679 struct vmxnet3_txbuf *txb; 2680 u_int i; 2681 2682 txr = &txq->vxtxq_cmd_ring; 2683 2684 for (i = 0; i < txr->vxtxr_ndesc; i++) { 2685 txb = &txr->vxtxr_txbuf[i]; 2686 2687 if (txb->vtxb_m == NULL) 2688 continue; 2689 2690 bus_dmamap_sync(sc->vmx_dmat, txb->vtxb_dmamap, 2691 0, txb->vtxb_dmamap->dm_mapsize, 2692 BUS_DMASYNC_POSTWRITE); 2693 bus_dmamap_unload(sc->vmx_dmat, txb->vtxb_dmamap); 2694 m_freem(txb->vtxb_m); 2695 txb->vtxb_m = NULL; 2696 } 2697 } 2698 2699 static void 2700 vmxnet3_rxstop(struct vmxnet3_softc *sc, struct vmxnet3_rxqueue *rxq) 2701 { 2702 struct vmxnet3_rxring *rxr; 2703 struct vmxnet3_rxbuf *rxb; 2704 u_int i, j; 2705 2706 if (rxq->vxrxq_mhead != NULL) { 2707 m_freem(rxq->vxrxq_mhead); 2708 rxq->vxrxq_mhead = NULL; 2709 rxq->vxrxq_mtail = NULL; 2710 } 2711 2712 for (i = 0; i < VMXNET3_RXRINGS_PERQ; i++) { 2713 rxr = &rxq->vxrxq_cmd_ring[i]; 2714 2715 for (j = 0; j < rxr->vxrxr_ndesc; j++) { 2716 rxb = &rxr->vxrxr_rxbuf[j]; 2717 2718 if (rxb->vrxb_m == NULL) 2719 continue; 2720 2721 bus_dmamap_sync(sc->vmx_dmat, rxb->vrxb_dmamap, 2722 0, rxb->vrxb_dmamap->dm_mapsize, 2723 BUS_DMASYNC_POSTREAD); 2724 bus_dmamap_unload(sc->vmx_dmat, rxb->vrxb_dmamap); 2725 m_freem(rxb->vrxb_m); 2726 rxb->vrxb_m = NULL; 2727 } 2728 } 2729 } 2730 2731 static void 2732 vmxnet3_stop_rendezvous(struct vmxnet3_softc *sc) 2733 { 2734 struct vmxnet3_rxqueue *rxq; 2735 struct vmxnet3_txqueue *txq; 2736 struct vmxnet3_queue *vmxq; 2737 int i; 2738 2739 for (i = 0; i < sc->vmx_nrxqueues; i++) { 2740 rxq = &sc->vmx_queue[i].vxq_rxqueue; 2741 VMXNET3_RXQ_LOCK(rxq); 2742 rxq->vxrxq_stopping = true; 2743 VMXNET3_RXQ_UNLOCK(rxq); 2744 } 2745 for (i = 0; i < sc->vmx_ntxqueues; i++) { 2746 txq = &sc->vmx_queue[i].vxq_txqueue; 2747 VMXNET3_TXQ_LOCK(txq); 2748 txq->vxtxq_stopping = true; 2749 VMXNET3_TXQ_UNLOCK(txq); 2750 } 2751 for (i = 0; i < sc->vmx_nrxqueues; i++) { 2752 vmxq = &sc->vmx_queue[i]; 2753 workqueue_wait(sc->vmx_queue_wq, &vmxq->vxq_wq_cookie); 2754 } 2755 } 2756 2757 static void 2758 vmxnet3_stop_locked(struct vmxnet3_softc *sc) 2759 { 2760 struct ifnet *ifp = &sc->vmx_ethercom.ec_if; 2761 int q; 2762 2763 VMXNET3_CORE_LOCK_ASSERT(sc); 2764 KASSERT(IFNET_LOCKED(ifp)); 2765 2766 vmxnet3_stop_rendezvous(sc); 2767 2768 sc->vmx_mcastactive = false; 2769 sc->vmx_link_active = 0; 2770 callout_halt(&sc->vmx_tick, sc->vmx_mtx); 2771 2772 ifp->if_flags &= ~IFF_RUNNING; 2773 2774 /* Disable interrupts. */ 2775 vmxnet3_disable_all_intrs(sc); 2776 vmxnet3_write_cmd(sc, VMXNET3_CMD_DISABLE); 2777 2778 for (q = 0; q < sc->vmx_ntxqueues; q++) 2779 vmxnet3_txstop(sc, &sc->vmx_queue[q].vxq_txqueue); 2780 for (q = 0; q < sc->vmx_nrxqueues; q++) 2781 vmxnet3_rxstop(sc, &sc->vmx_queue[q].vxq_rxqueue); 2782 2783 vmxnet3_write_cmd(sc, VMXNET3_CMD_RESET); 2784 } 2785 2786 static void 2787 vmxnet3_stop(struct ifnet *ifp, int disable) 2788 { 2789 struct vmxnet3_softc *sc = ifp->if_softc; 2790 2791 KASSERT(IFNET_LOCKED(ifp)); 2792 2793 VMXNET3_CORE_LOCK(sc); 2794 vmxnet3_stop_locked(sc); 2795 VMXNET3_CORE_UNLOCK(sc); 2796 } 2797 2798 static void 2799 vmxnet3_txinit(struct vmxnet3_softc *sc, struct vmxnet3_txqueue *txq) 2800 { 2801 struct vmxnet3_txring *txr; 2802 struct vmxnet3_comp_ring *txc; 2803 2804 txr = &txq->vxtxq_cmd_ring; 2805 txr->vxtxr_head = 0; 2806 txr->vxtxr_next = 0; 2807 txr->vxtxr_gen = VMXNET3_INIT_GEN; 2808 memset(txr->vxtxr_txd, 0, 2809 txr->vxtxr_ndesc * sizeof(struct vmxnet3_txdesc)); 2810 2811 txc = &txq->vxtxq_comp_ring; 2812 txc->vxcr_next = 0; 2813 txc->vxcr_gen = VMXNET3_INIT_GEN; 2814 memset(txc->vxcr_u.txcd, 0, 2815 txc->vxcr_ndesc * sizeof(struct vmxnet3_txcompdesc)); 2816 } 2817 2818 static int 2819 vmxnet3_rxinit(struct vmxnet3_softc *sc, struct vmxnet3_rxqueue *rxq) 2820 { 2821 struct vmxnet3_rxring *rxr; 2822 struct vmxnet3_comp_ring *rxc; 2823 u_int i, populate, idx; 2824 int error; 2825 2826 /* LRO and jumbo frame is not supported yet */ 2827 populate = 1; 2828 2829 for (i = 0; i < populate; i++) { 2830 rxr = &rxq->vxrxq_cmd_ring[i]; 2831 rxr->vxrxr_fill = 0; 2832 rxr->vxrxr_gen = VMXNET3_INIT_GEN; 2833 memset(rxr->vxrxr_rxd, 0, 2834 rxr->vxrxr_ndesc * sizeof(struct vmxnet3_rxdesc)); 2835 2836 for (idx = 0; idx < rxr->vxrxr_ndesc; idx++) { 2837 error = vmxnet3_newbuf(sc, rxq, rxr); 2838 if (error) 2839 return (error); 2840 } 2841 } 2842 2843 for (/**/; i < VMXNET3_RXRINGS_PERQ; i++) { 2844 rxr = &rxq->vxrxq_cmd_ring[i]; 2845 rxr->vxrxr_fill = 0; 2846 rxr->vxrxr_gen = 0; 2847 memset(rxr->vxrxr_rxd, 0, 2848 rxr->vxrxr_ndesc * sizeof(struct vmxnet3_rxdesc)); 2849 } 2850 2851 rxc = &rxq->vxrxq_comp_ring; 2852 rxc->vxcr_next = 0; 2853 rxc->vxcr_gen = VMXNET3_INIT_GEN; 2854 memset(rxc->vxcr_u.rxcd, 0, 2855 rxc->vxcr_ndesc * sizeof(struct vmxnet3_rxcompdesc)); 2856 2857 return (0); 2858 } 2859 2860 static int 2861 vmxnet3_reinit_queues(struct vmxnet3_softc *sc) 2862 { 2863 device_t dev; 2864 int q, error; 2865 dev = sc->vmx_dev; 2866 2867 for (q = 0; q < sc->vmx_ntxqueues; q++) 2868 vmxnet3_txinit(sc, &sc->vmx_queue[q].vxq_txqueue); 2869 2870 for (q = 0; q < sc->vmx_nrxqueues; q++) { 2871 error = vmxnet3_rxinit(sc, &sc->vmx_queue[q].vxq_rxqueue); 2872 if (error) { 2873 device_printf(dev, "cannot populate Rx queue %d\n", q); 2874 return (error); 2875 } 2876 } 2877 2878 return (0); 2879 } 2880 2881 static int 2882 vmxnet3_enable_device(struct vmxnet3_softc *sc) 2883 { 2884 int q; 2885 2886 if (vmxnet3_read_cmd(sc, VMXNET3_CMD_ENABLE) != 0) { 2887 device_printf(sc->vmx_dev, "device enable command failed!\n"); 2888 return (1); 2889 } 2890 2891 /* Reset the Rx queue heads. */ 2892 for (q = 0; q < sc->vmx_nrxqueues; q++) { 2893 vmxnet3_write_bar0(sc, VMXNET3_BAR0_RXH1(q), 0); 2894 vmxnet3_write_bar0(sc, VMXNET3_BAR0_RXH2(q), 0); 2895 } 2896 2897 return (0); 2898 } 2899 2900 static void 2901 vmxnet3_reinit_rxfilters(struct vmxnet3_softc *sc) 2902 { 2903 2904 vmxnet3_set_rxfilter(sc); 2905 2906 memset(sc->vmx_ds->vlan_filter, 0, sizeof(sc->vmx_ds->vlan_filter)); 2907 vmxnet3_write_cmd(sc, VMXNET3_CMD_VLAN_FILTER); 2908 } 2909 2910 static int 2911 vmxnet3_reinit(struct vmxnet3_softc *sc) 2912 { 2913 2914 VMXNET3_CORE_LOCK_ASSERT(sc); 2915 2916 vmxnet3_set_lladdr(sc); 2917 vmxnet3_reinit_shared_data(sc); 2918 2919 if (vmxnet3_reinit_queues(sc) != 0) 2920 return (ENXIO); 2921 2922 if (vmxnet3_enable_device(sc) != 0) 2923 return (ENXIO); 2924 2925 vmxnet3_reinit_rxfilters(sc); 2926 2927 return (0); 2928 } 2929 2930 static int 2931 vmxnet3_init_locked(struct vmxnet3_softc *sc) 2932 { 2933 struct ifnet *ifp = &sc->vmx_ethercom.ec_if; 2934 int q; 2935 int error; 2936 2937 KASSERT(IFNET_LOCKED(ifp)); 2938 VMXNET3_CORE_LOCK_ASSERT(sc); 2939 2940 vmxnet3_stop_locked(sc); 2941 2942 error = vmxnet3_reinit(sc); 2943 if (error) { 2944 vmxnet3_stop_locked(sc); 2945 return (error); 2946 } 2947 2948 ifp->if_flags |= IFF_RUNNING; 2949 vmxnet3_if_link_status(sc); 2950 sc->vmx_mcastactive = true; 2951 2952 vmxnet3_enable_all_intrs(sc); 2953 callout_reset(&sc->vmx_tick, hz, vmxnet3_tick, sc); 2954 2955 for (q = 0; q < sc->vmx_ntxqueues; q++) { 2956 VMXNET3_TXQ_LOCK(&sc->vmx_queue[q].vxq_txqueue); 2957 sc->vmx_queue[q].vxq_txqueue.vxtxq_stopping = false; 2958 VMXNET3_TXQ_UNLOCK(&sc->vmx_queue[q].vxq_txqueue); 2959 } 2960 for (q = 0; q < sc->vmx_nrxqueues; q++) { 2961 VMXNET3_RXQ_LOCK(&sc->vmx_queue[q].vxq_rxqueue); 2962 sc->vmx_queue[q].vxq_rxqueue.vxrxq_stopping = false; 2963 VMXNET3_RXQ_UNLOCK(&sc->vmx_queue[q].vxq_rxqueue); 2964 } 2965 2966 return (0); 2967 } 2968 2969 static int 2970 vmxnet3_init(struct ifnet *ifp) 2971 { 2972 struct vmxnet3_softc *sc = ifp->if_softc; 2973 int error; 2974 2975 KASSERT(IFNET_LOCKED(ifp)); 2976 2977 VMXNET3_CORE_LOCK(sc); 2978 error = vmxnet3_init_locked(sc); 2979 VMXNET3_CORE_UNLOCK(sc); 2980 2981 return (error); 2982 } 2983 2984 static int 2985 vmxnet3_txq_offload_ctx(struct vmxnet3_txqueue *txq, struct mbuf *m, 2986 int *start, int *csum_start) 2987 { 2988 struct ether_header *eh; 2989 struct mbuf *mp; 2990 int offset, csum_off, iphl, offp; 2991 bool v4; 2992 2993 eh = mtod(m, struct ether_header *); 2994 switch (htons(eh->ether_type)) { 2995 case ETHERTYPE_IP: 2996 case ETHERTYPE_IPV6: 2997 offset = ETHER_HDR_LEN; 2998 break; 2999 case ETHERTYPE_VLAN: 3000 offset = ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN; 3001 break; 3002 default: 3003 m_freem(m); 3004 return (EINVAL); 3005 } 3006 3007 if ((m->m_pkthdr.csum_flags & 3008 (M_CSUM_TSOv4 | M_CSUM_UDPv4 | M_CSUM_TCPv4)) != 0) { 3009 iphl = M_CSUM_DATA_IPv4_IPHL(m->m_pkthdr.csum_data); 3010 v4 = true; 3011 } else { 3012 iphl = M_CSUM_DATA_IPv6_IPHL(m->m_pkthdr.csum_data); 3013 v4 = false; 3014 } 3015 *start = offset + iphl; 3016 3017 if (m->m_pkthdr.csum_flags & 3018 (M_CSUM_TCPv4 | M_CSUM_TCPv6 | M_CSUM_TSOv4 | M_CSUM_TSOv6)) { 3019 csum_off = offsetof(struct tcphdr, th_sum); 3020 } else { 3021 csum_off = offsetof(struct udphdr, uh_sum); 3022 } 3023 3024 *csum_start = *start + csum_off; 3025 mp = m_pulldown(m, 0, *csum_start + 2, &offp); 3026 if (!mp) { 3027 /* m is already freed */ 3028 return ENOBUFS; 3029 } 3030 3031 if (m->m_pkthdr.csum_flags & (M_CSUM_TSOv4 | M_CSUM_TSOv6)) { 3032 struct tcphdr *tcp; 3033 3034 txq->vxtxq_stats.vmtxs_tso++; 3035 tcp = (void *)(mtod(mp, char *) + offp + *start); 3036 3037 if (v4) { 3038 struct ip *ip; 3039 3040 ip = (void *)(mtod(mp, char *) + offp + offset); 3041 tcp->th_sum = in_cksum_phdr(ip->ip_src.s_addr, 3042 ip->ip_dst.s_addr, htons(IPPROTO_TCP)); 3043 } else { 3044 struct ip6_hdr *ip6; 3045 3046 ip6 = (void *)(mtod(mp, char *) + offp + offset); 3047 tcp->th_sum = in6_cksum_phdr(&ip6->ip6_src, 3048 &ip6->ip6_dst, 0, htonl(IPPROTO_TCP)); 3049 } 3050 3051 /* 3052 * For TSO, the size of the protocol header is also 3053 * included in the descriptor header size. 3054 */ 3055 *start += (tcp->th_off << 2); 3056 } else 3057 txq->vxtxq_stats.vmtxs_csum++; 3058 3059 return (0); 3060 } 3061 3062 static int 3063 vmxnet3_txq_load_mbuf(struct vmxnet3_txqueue *txq, struct mbuf **m0, 3064 bus_dmamap_t dmap) 3065 { 3066 struct mbuf *m; 3067 bus_dma_tag_t tag; 3068 int error; 3069 3070 m = *m0; 3071 tag = txq->vxtxq_sc->vmx_dmat; 3072 3073 error = bus_dmamap_load_mbuf(tag, dmap, m, BUS_DMA_NOWAIT); 3074 if (error == 0 || error != EFBIG) 3075 return (error); 3076 3077 m = m_defrag(m, M_NOWAIT); 3078 if (m != NULL) { 3079 *m0 = m; 3080 error = bus_dmamap_load_mbuf(tag, dmap, m, BUS_DMA_NOWAIT); 3081 } else 3082 error = ENOBUFS; 3083 3084 if (error) { 3085 m_freem(*m0); 3086 *m0 = NULL; 3087 txq->vxtxq_defrag_failed.ev_count++; 3088 } else 3089 txq->vxtxq_defragged.ev_count++; 3090 3091 return (error); 3092 } 3093 3094 static void 3095 vmxnet3_txq_unload_mbuf(struct vmxnet3_txqueue *txq, bus_dmamap_t dmap) 3096 { 3097 3098 bus_dmamap_unload(txq->vxtxq_sc->vmx_dmat, dmap); 3099 } 3100 3101 static int 3102 vmxnet3_txq_encap(struct vmxnet3_txqueue *txq, struct mbuf **m0) 3103 { 3104 struct vmxnet3_softc *sc; 3105 struct vmxnet3_txring *txr; 3106 struct vmxnet3_txdesc *txd, *sop; 3107 struct mbuf *m; 3108 bus_dmamap_t dmap; 3109 bus_dma_segment_t *segs; 3110 int i, gen, start, csum_start, nsegs, error; 3111 3112 sc = txq->vxtxq_sc; 3113 start = 0; 3114 txd = NULL; 3115 txr = &txq->vxtxq_cmd_ring; 3116 dmap = txr->vxtxr_txbuf[txr->vxtxr_head].vtxb_dmamap; 3117 csum_start = 0; /* GCC */ 3118 3119 error = vmxnet3_txq_load_mbuf(txq, m0, dmap); 3120 if (error) 3121 return (error); 3122 3123 nsegs = dmap->dm_nsegs; 3124 segs = dmap->dm_segs; 3125 3126 m = *m0; 3127 KASSERT(m->m_flags & M_PKTHDR); 3128 KASSERT(nsegs <= VMXNET3_TX_MAXSEGS); 3129 3130 if (vmxnet3_txring_avail(txr) < nsegs) { 3131 txq->vxtxq_stats.vmtxs_full++; 3132 vmxnet3_txq_unload_mbuf(txq, dmap); 3133 return (ENOSPC); 3134 } else if (m->m_pkthdr.csum_flags & VMXNET3_CSUM_ALL_OFFLOAD) { 3135 error = vmxnet3_txq_offload_ctx(txq, m, &start, &csum_start); 3136 if (error) { 3137 /* m is already freed */ 3138 txq->vxtxq_stats.vmtxs_offload_failed++; 3139 vmxnet3_txq_unload_mbuf(txq, dmap); 3140 *m0 = NULL; 3141 return (error); 3142 } 3143 } 3144 3145 txr->vxtxr_txbuf[txr->vxtxr_head].vtxb_m = m; 3146 sop = &txr->vxtxr_txd[txr->vxtxr_head]; 3147 gen = txr->vxtxr_gen ^ 1; /* Owned by cpu (yet) */ 3148 3149 for (i = 0; i < nsegs; i++) { 3150 txd = &txr->vxtxr_txd[txr->vxtxr_head]; 3151 3152 txd->addr = segs[i].ds_addr; 3153 txd->len = segs[i].ds_len; 3154 txd->gen = gen; 3155 txd->dtype = 0; 3156 txd->offload_mode = VMXNET3_OM_NONE; 3157 txd->offload_pos = 0; 3158 txd->hlen = 0; 3159 txd->eop = 0; 3160 txd->compreq = 0; 3161 txd->vtag_mode = 0; 3162 txd->vtag = 0; 3163 3164 if (++txr->vxtxr_head == txr->vxtxr_ndesc) { 3165 txr->vxtxr_head = 0; 3166 txr->vxtxr_gen ^= 1; 3167 } 3168 gen = txr->vxtxr_gen; 3169 } 3170 txd->eop = 1; 3171 txd->compreq = 1; 3172 3173 if (vlan_has_tag(m)) { 3174 sop->vtag_mode = 1; 3175 sop->vtag = vlan_get_tag(m); 3176 } 3177 3178 if (m->m_pkthdr.csum_flags & (M_CSUM_TSOv4 | M_CSUM_TSOv6)) { 3179 sop->offload_mode = VMXNET3_OM_TSO; 3180 sop->hlen = start; 3181 sop->offload_pos = m->m_pkthdr.segsz; 3182 } else if (m->m_pkthdr.csum_flags & (VMXNET3_CSUM_OFFLOAD | 3183 VMXNET3_CSUM_OFFLOAD_IPV6)) { 3184 sop->offload_mode = VMXNET3_OM_CSUM; 3185 sop->hlen = start; 3186 sop->offload_pos = csum_start; 3187 } 3188 3189 /* Finally, change the ownership. */ 3190 vmxnet3_barrier(sc, VMXNET3_BARRIER_WR); 3191 sop->gen ^= 1; 3192 3193 txq->vxtxq_ts->npending += nsegs; 3194 if (txq->vxtxq_ts->npending >= txq->vxtxq_ts->intr_threshold) { 3195 struct vmxnet3_queue *vmxq; 3196 vmxq = container_of(txq, struct vmxnet3_queue, vxq_txqueue); 3197 txq->vxtxq_ts->npending = 0; 3198 vmxnet3_write_bar0(sc, VMXNET3_BAR0_TXH(vmxq->vxq_id), 3199 txr->vxtxr_head); 3200 } 3201 3202 return (0); 3203 } 3204 3205 #define VMXNET3_TX_START 1 3206 #define VMXNET3_TX_TRANSMIT 2 3207 static inline void 3208 vmxnet3_tx_common_locked(struct ifnet *ifp, struct vmxnet3_txqueue *txq, int txtype) 3209 { 3210 struct vmxnet3_softc *sc; 3211 struct vmxnet3_txring *txr; 3212 struct mbuf *m_head; 3213 int tx; 3214 3215 sc = ifp->if_softc; 3216 txr = &txq->vxtxq_cmd_ring; 3217 tx = 0; 3218 3219 VMXNET3_TXQ_LOCK_ASSERT(txq); 3220 3221 if (txq->vxtxq_stopping || sc->vmx_link_active == 0) 3222 return; 3223 3224 for (;;) { 3225 if (txtype == VMXNET3_TX_START) 3226 IFQ_POLL(&ifp->if_snd, m_head); 3227 else 3228 m_head = pcq_peek(txq->vxtxq_interq); 3229 if (m_head == NULL) 3230 break; 3231 3232 if (vmxnet3_txring_avail(txr) < VMXNET3_TX_MAXSEGS) 3233 break; 3234 3235 if (txtype == VMXNET3_TX_START) 3236 IFQ_DEQUEUE(&ifp->if_snd, m_head); 3237 else 3238 m_head = pcq_get(txq->vxtxq_interq); 3239 if (m_head == NULL) 3240 break; 3241 3242 if (vmxnet3_txq_encap(txq, &m_head) != 0) { 3243 if (m_head != NULL) 3244 m_freem(m_head); 3245 break; 3246 } 3247 3248 tx++; 3249 bpf_mtap(ifp, m_head, BPF_D_OUT); 3250 } 3251 3252 if (tx > 0) 3253 txq->vxtxq_watchdog = VMXNET3_WATCHDOG_TIMEOUT; 3254 } 3255 3256 static void 3257 vmxnet3_start_locked(struct ifnet *ifp) 3258 { 3259 struct vmxnet3_softc *sc; 3260 struct vmxnet3_txqueue *txq; 3261 3262 sc = ifp->if_softc; 3263 txq = &sc->vmx_queue[0].vxq_txqueue; 3264 3265 vmxnet3_tx_common_locked(ifp, txq, VMXNET3_TX_START); 3266 } 3267 3268 void 3269 vmxnet3_start(struct ifnet *ifp) 3270 { 3271 struct vmxnet3_softc *sc; 3272 struct vmxnet3_txqueue *txq; 3273 3274 sc = ifp->if_softc; 3275 txq = &sc->vmx_queue[0].vxq_txqueue; 3276 3277 VMXNET3_TXQ_LOCK(txq); 3278 vmxnet3_start_locked(ifp); 3279 VMXNET3_TXQ_UNLOCK(txq); 3280 } 3281 3282 static int 3283 vmxnet3_select_txqueue(struct ifnet *ifp, struct mbuf *m __unused) 3284 { 3285 struct vmxnet3_softc *sc; 3286 u_int cpuid; 3287 3288 sc = ifp->if_softc; 3289 cpuid = cpu_index(curcpu()); 3290 /* 3291 * Future work 3292 * We should select txqueue to even up the load even if ncpu is 3293 * different from sc->vmx_ntxqueues. Currently, the load is not 3294 * even, that is, when ncpu is six and ntxqueues is four, the load 3295 * of vmx_queue[0] and vmx_queue[1] is higher than vmx_queue[2] and 3296 * vmx_queue[3] because CPU#4 always uses vmx_queue[0] and CPU#5 always 3297 * uses vmx_queue[1]. 3298 * Furthermore, we should not use random value to select txqueue to 3299 * avoid reordering. We should use flow information of mbuf. 3300 */ 3301 return cpuid % sc->vmx_ntxqueues; 3302 } 3303 3304 static void 3305 vmxnet3_transmit_locked(struct ifnet *ifp, struct vmxnet3_txqueue *txq) 3306 { 3307 3308 vmxnet3_tx_common_locked(ifp, txq, VMXNET3_TX_TRANSMIT); 3309 } 3310 3311 static int 3312 vmxnet3_transmit(struct ifnet *ifp, struct mbuf *m) 3313 { 3314 struct vmxnet3_softc *sc; 3315 struct vmxnet3_txqueue *txq; 3316 int qid; 3317 3318 qid = vmxnet3_select_txqueue(ifp, m); 3319 sc = ifp->if_softc; 3320 txq = &sc->vmx_queue[qid].vxq_txqueue; 3321 3322 if (__predict_false(!pcq_put(txq->vxtxq_interq, m))) { 3323 VMXNET3_TXQ_LOCK(txq); 3324 txq->vxtxq_pcqdrop.ev_count++; 3325 VMXNET3_TXQ_UNLOCK(txq); 3326 m_freem(m); 3327 return ENOBUFS; 3328 } 3329 3330 #ifdef VMXNET3_ALWAYS_TXDEFER 3331 kpreempt_disable(); 3332 softint_schedule(txq->vxtxq_si); 3333 kpreempt_enable(); 3334 #else 3335 if (VMXNET3_TXQ_TRYLOCK(txq)) { 3336 vmxnet3_transmit_locked(ifp, txq); 3337 VMXNET3_TXQ_UNLOCK(txq); 3338 } else { 3339 kpreempt_disable(); 3340 softint_schedule(txq->vxtxq_si); 3341 kpreempt_enable(); 3342 } 3343 #endif 3344 3345 return 0; 3346 } 3347 3348 static void 3349 vmxnet3_deferred_transmit(void *arg) 3350 { 3351 struct vmxnet3_txqueue *txq = arg; 3352 struct vmxnet3_softc *sc = txq->vxtxq_sc; 3353 struct ifnet *ifp = &sc->vmx_ethercom.ec_if; 3354 3355 VMXNET3_TXQ_LOCK(txq); 3356 txq->vxtxq_transmitdef.ev_count++; 3357 if (pcq_peek(txq->vxtxq_interq) != NULL) 3358 vmxnet3_transmit_locked(ifp, txq); 3359 VMXNET3_TXQ_UNLOCK(txq); 3360 } 3361 3362 static void 3363 vmxnet3_set_rxfilter(struct vmxnet3_softc *sc) 3364 { 3365 struct ethercom *ec = &sc->vmx_ethercom; 3366 struct vmxnet3_driver_shared *ds = sc->vmx_ds; 3367 struct ether_multi *enm; 3368 struct ether_multistep step; 3369 u_int mode; 3370 uint8_t *p; 3371 3372 VMXNET3_CORE_LOCK_ASSERT(sc); 3373 3374 ds->mcast_tablelen = 0; 3375 ETHER_LOCK(ec); 3376 CLR(ec->ec_flags, ETHER_F_ALLMULTI); 3377 ETHER_UNLOCK(ec); 3378 3379 /* 3380 * Always accept broadcast frames. 3381 * Always accept frames destined to our station address. 3382 */ 3383 mode = VMXNET3_RXMODE_BCAST | VMXNET3_RXMODE_UCAST; 3384 3385 ETHER_LOCK(ec); 3386 if (sc->vmx_promisc || 3387 ec->ec_multicnt > VMXNET3_MULTICAST_MAX) 3388 goto allmulti; 3389 3390 p = sc->vmx_mcast; 3391 ETHER_FIRST_MULTI(step, ec, enm); 3392 while (enm != NULL) { 3393 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) { 3394 /* 3395 * We must listen to a range of multicast addresses. 3396 * For now, just accept all multicasts, rather than 3397 * trying to set only those filter bits needed to match 3398 * the range. (At this time, the only use of address 3399 * ranges is for IP multicast routing, for which the 3400 * range is big enough to require all bits set.) 3401 */ 3402 goto allmulti; 3403 } 3404 memcpy(p, enm->enm_addrlo, ETHER_ADDR_LEN); 3405 3406 p += ETHER_ADDR_LEN; 3407 3408 ETHER_NEXT_MULTI(step, enm); 3409 } 3410 3411 if (ec->ec_multicnt > 0) { 3412 SET(mode, VMXNET3_RXMODE_MCAST); 3413 ds->mcast_tablelen = p - sc->vmx_mcast; 3414 } 3415 ETHER_UNLOCK(ec); 3416 3417 goto setit; 3418 3419 allmulti: 3420 SET(ec->ec_flags, ETHER_F_ALLMULTI); 3421 ETHER_UNLOCK(ec); 3422 SET(mode, (VMXNET3_RXMODE_ALLMULTI | VMXNET3_RXMODE_MCAST)); 3423 if (sc->vmx_promisc) 3424 SET(mode, VMXNET3_RXMODE_PROMISC); 3425 3426 setit: 3427 vmxnet3_write_cmd(sc, VMXNET3_CMD_SET_FILTER); 3428 ds->rxmode = mode; 3429 vmxnet3_write_cmd(sc, VMXNET3_CMD_SET_RXMODE); 3430 } 3431 3432 static int 3433 vmxnet3_ioctl(struct ifnet *ifp, u_long cmd, void *data) 3434 { 3435 struct vmxnet3_softc *sc = ifp->if_softc; 3436 struct ifreq *ifr = (struct ifreq *)data; 3437 int s, error = 0; 3438 3439 switch (cmd) { 3440 case SIOCADDMULTI: 3441 case SIOCDELMULTI: 3442 break; 3443 default: 3444 KASSERT(IFNET_LOCKED(ifp)); 3445 } 3446 3447 switch (cmd) { 3448 case SIOCSIFMTU: { 3449 int nmtu = ifr->ifr_mtu; 3450 3451 if (nmtu < VMXNET3_MIN_MTU || nmtu > VMXNET3_MAX_MTU) { 3452 error = EINVAL; 3453 break; 3454 } 3455 if (ifp->if_mtu != (uint64_t)nmtu) { 3456 s = splnet(); 3457 error = ether_ioctl(ifp, cmd, data); 3458 splx(s); 3459 if (error == ENETRESET) 3460 error = vmxnet3_init(ifp); 3461 } 3462 break; 3463 } 3464 3465 default: 3466 s = splnet(); 3467 error = ether_ioctl(ifp, cmd, data); 3468 splx(s); 3469 } 3470 3471 if (error == ENETRESET) { 3472 VMXNET3_CORE_LOCK(sc); 3473 if (sc->vmx_mcastactive) 3474 vmxnet3_set_rxfilter(sc); 3475 VMXNET3_CORE_UNLOCK(sc); 3476 error = 0; 3477 } 3478 3479 return error; 3480 } 3481 3482 static int 3483 vmxnet3_ifflags_cb(struct ethercom *ec) 3484 { 3485 struct ifnet *ifp = &ec->ec_if; 3486 struct vmxnet3_softc *sc = ifp->if_softc; 3487 int error = 0; 3488 3489 KASSERT(IFNET_LOCKED(ifp)); 3490 3491 VMXNET3_CORE_LOCK(sc); 3492 const unsigned short changed = ifp->if_flags ^ sc->vmx_if_flags; 3493 if ((changed & ~(IFF_CANTCHANGE | IFF_DEBUG)) == 0) { 3494 sc->vmx_if_flags = ifp->if_flags; 3495 if (changed & IFF_PROMISC) { 3496 sc->vmx_promisc = ifp->if_flags & IFF_PROMISC; 3497 error = ENETRESET; 3498 } 3499 } else { 3500 error = ENETRESET; 3501 } 3502 VMXNET3_CORE_UNLOCK(sc); 3503 3504 vmxnet3_if_link_status(sc); 3505 3506 return error; 3507 } 3508 3509 static int 3510 vmxnet3_watchdog(struct vmxnet3_txqueue *txq) 3511 { 3512 struct vmxnet3_softc *sc; 3513 struct vmxnet3_queue *vmxq; 3514 3515 sc = txq->vxtxq_sc; 3516 vmxq = container_of(txq, struct vmxnet3_queue, vxq_txqueue); 3517 3518 VMXNET3_TXQ_LOCK(txq); 3519 if (txq->vxtxq_watchdog == 0 || --txq->vxtxq_watchdog) { 3520 VMXNET3_TXQ_UNLOCK(txq); 3521 return (0); 3522 } 3523 txq->vxtxq_watchdogto.ev_count++; 3524 VMXNET3_TXQ_UNLOCK(txq); 3525 3526 device_printf(sc->vmx_dev, "watchdog timeout on queue %d\n", 3527 vmxq->vxq_id); 3528 return (1); 3529 } 3530 3531 static void 3532 vmxnet3_refresh_host_stats(struct vmxnet3_softc *sc) 3533 { 3534 3535 vmxnet3_write_cmd(sc, VMXNET3_CMD_GET_STATS); 3536 } 3537 3538 static void 3539 vmxnet3_tick(void *xsc) 3540 { 3541 struct vmxnet3_softc *sc; 3542 int i, timedout; 3543 3544 sc = xsc; 3545 timedout = 0; 3546 3547 VMXNET3_CORE_LOCK(sc); 3548 3549 vmxnet3_refresh_host_stats(sc); 3550 3551 for (i = 0; i < sc->vmx_ntxqueues; i++) 3552 timedout |= vmxnet3_watchdog(&sc->vmx_queue[i].vxq_txqueue); 3553 3554 if (timedout != 0) { 3555 if (!sc->vmx_reset_pending) { 3556 sc->vmx_reset_pending = true; 3557 workqueue_enqueue(sc->vmx_reset_wq, 3558 &sc->vmx_reset_work, NULL); 3559 } 3560 } else { 3561 callout_reset(&sc->vmx_tick, hz, vmxnet3_tick, sc); 3562 } 3563 3564 VMXNET3_CORE_UNLOCK(sc); 3565 } 3566 3567 static void 3568 vmxnet3_reset_work(struct work *work, void *arg) 3569 { 3570 struct vmxnet3_softc *sc = arg; 3571 struct ifnet *ifp = &sc->vmx_ethercom.ec_if; 3572 3573 VMXNET3_CORE_LOCK(sc); 3574 KASSERT(sc->vmx_reset_pending); 3575 sc->vmx_reset_pending = false; 3576 VMXNET3_CORE_UNLOCK(sc); 3577 3578 IFNET_LOCK(ifp); 3579 (void)vmxnet3_init(ifp); 3580 IFNET_UNLOCK(ifp); 3581 } 3582 3583 /* 3584 * update link state of ifnet and softc 3585 */ 3586 static void 3587 vmxnet3_if_link_status(struct vmxnet3_softc *sc) 3588 { 3589 struct ifnet *ifp = &sc->vmx_ethercom.ec_if; 3590 u_int link; 3591 bool up; 3592 3593 up = vmxnet3_cmd_link_status(ifp); 3594 if (up) { 3595 sc->vmx_link_active = 1; 3596 link = LINK_STATE_UP; 3597 } else { 3598 sc->vmx_link_active = 0; 3599 link = LINK_STATE_DOWN; 3600 } 3601 3602 if_link_state_change(ifp, link); 3603 } 3604 3605 /* 3606 * check vmx(4) state by VMXNET3_CMD and update ifp->if_baudrate 3607 * returns 3608 * - true: link up 3609 * - false: link down 3610 */ 3611 static bool 3612 vmxnet3_cmd_link_status(struct ifnet *ifp) 3613 { 3614 struct vmxnet3_softc *sc = ifp->if_softc; 3615 u_int x, speed; 3616 3617 x = vmxnet3_read_cmd(sc, VMXNET3_CMD_GET_LINK); 3618 if ((x & 1) == 0) 3619 return false; 3620 3621 speed = x >> 16; 3622 ifp->if_baudrate = IF_Mbps(speed); 3623 return true; 3624 } 3625 3626 static void 3627 vmxnet3_ifmedia_status(struct ifnet *ifp, struct ifmediareq *ifmr) 3628 { 3629 bool up; 3630 3631 ifmr->ifm_status = IFM_AVALID; 3632 ifmr->ifm_active = IFM_ETHER; 3633 3634 up = vmxnet3_cmd_link_status(ifp); 3635 if (!up) 3636 return; 3637 3638 ifmr->ifm_status |= IFM_ACTIVE; 3639 3640 if (ifp->if_baudrate >= IF_Gbps(10ULL)) 3641 ifmr->ifm_active |= IFM_10G_T | IFM_FDX; 3642 } 3643 3644 static int 3645 vmxnet3_ifmedia_change(struct ifnet *ifp) 3646 { 3647 return 0; 3648 } 3649 3650 static void 3651 vmxnet3_set_lladdr(struct vmxnet3_softc *sc) 3652 { 3653 uint32_t ml, mh; 3654 3655 ml = sc->vmx_lladdr[0]; 3656 ml |= sc->vmx_lladdr[1] << 8; 3657 ml |= sc->vmx_lladdr[2] << 16; 3658 ml |= sc->vmx_lladdr[3] << 24; 3659 vmxnet3_write_bar1(sc, VMXNET3_BAR1_MACL, ml); 3660 3661 mh = sc->vmx_lladdr[4]; 3662 mh |= sc->vmx_lladdr[5] << 8; 3663 vmxnet3_write_bar1(sc, VMXNET3_BAR1_MACH, mh); 3664 } 3665 3666 static void 3667 vmxnet3_get_lladdr(struct vmxnet3_softc *sc) 3668 { 3669 uint32_t ml, mh; 3670 3671 ml = vmxnet3_read_cmd(sc, VMXNET3_CMD_GET_MACL); 3672 mh = vmxnet3_read_cmd(sc, VMXNET3_CMD_GET_MACH); 3673 3674 sc->vmx_lladdr[0] = ml; 3675 sc->vmx_lladdr[1] = ml >> 8; 3676 sc->vmx_lladdr[2] = ml >> 16; 3677 sc->vmx_lladdr[3] = ml >> 24; 3678 sc->vmx_lladdr[4] = mh; 3679 sc->vmx_lladdr[5] = mh >> 8; 3680 } 3681 3682 static void 3683 vmxnet3_enable_all_intrs(struct vmxnet3_softc *sc) 3684 { 3685 int i; 3686 3687 sc->vmx_ds->ictrl &= ~VMXNET3_ICTRL_DISABLE_ALL; 3688 for (i = 0; i < sc->vmx_nintrs; i++) 3689 vmxnet3_enable_intr(sc, i); 3690 } 3691 3692 static void 3693 vmxnet3_disable_all_intrs(struct vmxnet3_softc *sc) 3694 { 3695 int i; 3696 3697 sc->vmx_ds->ictrl |= VMXNET3_ICTRL_DISABLE_ALL; 3698 for (i = 0; i < sc->vmx_nintrs; i++) 3699 vmxnet3_disable_intr(sc, i); 3700 } 3701 3702 static int 3703 vmxnet3_dma_malloc(struct vmxnet3_softc *sc, bus_size_t size, bus_size_t align, 3704 struct vmxnet3_dma_alloc *dma) 3705 { 3706 bus_dma_tag_t t = sc->vmx_dmat; 3707 bus_dma_segment_t *segs = dma->dma_segs; 3708 int n, error; 3709 3710 memset(dma, 0, sizeof(*dma)); 3711 3712 error = bus_dmamem_alloc(t, size, align, 0, segs, 1, &n, BUS_DMA_NOWAIT); 3713 if (error) { 3714 aprint_error_dev(sc->vmx_dev, "bus_dmamem_alloc failed: %d\n", error); 3715 goto fail1; 3716 } 3717 KASSERT(n == 1); 3718 3719 error = bus_dmamem_map(t, segs, 1, size, &dma->dma_vaddr, BUS_DMA_NOWAIT); 3720 if (error) { 3721 aprint_error_dev(sc->vmx_dev, "bus_dmamem_map failed: %d\n", error); 3722 goto fail2; 3723 } 3724 3725 error = bus_dmamap_create(t, size, 1, size, 0, BUS_DMA_NOWAIT, &dma->dma_map); 3726 if (error) { 3727 aprint_error_dev(sc->vmx_dev, "bus_dmamap_create failed: %d\n", error); 3728 goto fail3; 3729 } 3730 3731 error = bus_dmamap_load(t, dma->dma_map, dma->dma_vaddr, size, NULL, 3732 BUS_DMA_NOWAIT); 3733 if (error) { 3734 aprint_error_dev(sc->vmx_dev, "bus_dmamap_load failed: %d\n", error); 3735 goto fail4; 3736 } 3737 3738 memset(dma->dma_vaddr, 0, size); 3739 dma->dma_paddr = DMAADDR(dma->dma_map); 3740 dma->dma_size = size; 3741 3742 return (0); 3743 fail4: 3744 bus_dmamap_destroy(t, dma->dma_map); 3745 fail3: 3746 bus_dmamem_unmap(t, dma->dma_vaddr, size); 3747 fail2: 3748 bus_dmamem_free(t, segs, 1); 3749 fail1: 3750 return (error); 3751 } 3752 3753 static void 3754 vmxnet3_dma_free(struct vmxnet3_softc *sc, struct vmxnet3_dma_alloc *dma) 3755 { 3756 bus_dma_tag_t t = sc->vmx_dmat; 3757 3758 bus_dmamap_unload(t, dma->dma_map); 3759 bus_dmamap_destroy(t, dma->dma_map); 3760 bus_dmamem_unmap(t, dma->dma_vaddr, dma->dma_size); 3761 bus_dmamem_free(t, dma->dma_segs, 1); 3762 3763 memset(dma, 0, sizeof(*dma)); 3764 } 3765 3766 MODULE(MODULE_CLASS_DRIVER, if_vmx, "pci"); 3767 3768 #ifdef _MODULE 3769 #include "ioconf.c" 3770 #endif 3771 3772 static int 3773 if_vmx_modcmd(modcmd_t cmd, void *opaque) 3774 { 3775 int error = 0; 3776 3777 switch (cmd) { 3778 case MODULE_CMD_INIT: 3779 #ifdef _MODULE 3780 error = config_init_component(cfdriver_ioconf_if_vmx, 3781 cfattach_ioconf_if_vmx, cfdata_ioconf_if_vmx); 3782 #endif 3783 return error; 3784 case MODULE_CMD_FINI: 3785 #ifdef _MODULE 3786 error = config_fini_component(cfdriver_ioconf_if_vmx, 3787 cfattach_ioconf_if_vmx, cfdata_ioconf_if_vmx); 3788 #endif 3789 return error; 3790 default: 3791 return ENOTTY; 3792 } 3793 } 3794 3795
Indexes created Tue Sep 23 14:10:03 GMT 2025