1 /*- 2 * Copyright (c) 2003 Stuart Walsh<stu@ipng.org.uk> 3 * and Duncan Barclay<dmlb@dmlb.org> 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS 'AS IS' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/bus.h> 34 #include <sys/endian.h> 35 #include <sys/kernel.h> 36 #include <sys/malloc.h> 37 #include <sys/mbuf.h> 38 #include <sys/module.h> 39 #include <sys/rman.h> 40 #include <sys/socket.h> 41 #include <sys/sockio.h> 42 #include <sys/sysctl.h> 43 44 #include <net/bpf.h> 45 #include <net/if.h> 46 #include <net/ethernet.h> 47 #include <net/if_dl.h> 48 #include <net/if_media.h> 49 #include <net/if_types.h> 50 #include <net/if_vlan_var.h> 51 52 #include <dev/mii/mii.h> 53 #include <dev/mii/miivar.h> 54 55 #include <dev/pci/pcireg.h> 56 #include <dev/pci/pcivar.h> 57 58 #include <machine/bus.h> 59 60 #include <dev/bfe/if_bfereg.h> 61 62 MODULE_DEPEND(bfe, pci, 1, 1, 1); 63 MODULE_DEPEND(bfe, ether, 1, 1, 1); 64 MODULE_DEPEND(bfe, miibus, 1, 1, 1); 65 66 /* "device miibus" required. See GENERIC if you get errors here. */ 67 #include "miibus_if.h" 68 69 #define BFE_DEVDESC_MAX 64 /* Maximum device description length */ 70 71 static struct bfe_type bfe_devs[] = { 72 { BCOM_VENDORID, BCOM_DEVICEID_BCM4401, 73 "Broadcom BCM4401 Fast Ethernet" }, 74 { BCOM_VENDORID, BCOM_DEVICEID_BCM4401B0, 75 "Broadcom BCM4401-B0 Fast Ethernet" }, 76 { 0, 0, NULL } 77 }; 78 79 static int bfe_probe (device_t); 80 static int bfe_attach (device_t); 81 static int bfe_detach (device_t); 82 static int bfe_suspend (device_t); 83 static int bfe_resume (device_t); 84 static void bfe_release_resources (struct bfe_softc *); 85 static void bfe_intr (void *); 86 static int bfe_encap (struct bfe_softc *, struct mbuf **); 87 static void bfe_start (struct ifnet *); 88 static void bfe_start_locked (struct ifnet *); 89 static int bfe_ioctl (struct ifnet *, u_long, caddr_t); 90 static void bfe_init (void *); 91 static void bfe_init_locked (void *); 92 static void bfe_stop (struct bfe_softc *); 93 static void bfe_watchdog (struct bfe_softc *); 94 static int bfe_shutdown (device_t); 95 static void bfe_tick (void *); 96 static void bfe_txeof (struct bfe_softc *); 97 static void bfe_rxeof (struct bfe_softc *); 98 static void bfe_set_rx_mode (struct bfe_softc *); 99 static int bfe_list_rx_init (struct bfe_softc *); 100 static void bfe_list_tx_init (struct bfe_softc *); 101 static void bfe_discard_buf (struct bfe_softc *, int); 102 static int bfe_list_newbuf (struct bfe_softc *, int); 103 static void bfe_rx_ring_free (struct bfe_softc *); 104 105 static void bfe_pci_setup (struct bfe_softc *, u_int32_t); 106 static int bfe_ifmedia_upd (struct ifnet *); 107 static void bfe_ifmedia_sts (struct ifnet *, struct ifmediareq *); 108 static int bfe_miibus_readreg (device_t, int, int); 109 static int bfe_miibus_writereg (device_t, int, int, int); 110 static void bfe_miibus_statchg (device_t); 111 static int bfe_wait_bit (struct bfe_softc *, u_int32_t, u_int32_t, 112 u_long, const int); 113 static void bfe_get_config (struct bfe_softc *sc); 114 static void bfe_read_eeprom (struct bfe_softc *, u_int8_t *); 115 static void bfe_stats_update (struct bfe_softc *); 116 static void bfe_clear_stats (struct bfe_softc *); 117 static int bfe_readphy (struct bfe_softc *, u_int32_t, u_int32_t*); 118 static int bfe_writephy (struct bfe_softc *, u_int32_t, u_int32_t); 119 static int bfe_resetphy (struct bfe_softc *); 120 static int bfe_setupphy (struct bfe_softc *); 121 static void bfe_chip_reset (struct bfe_softc *); 122 static void bfe_chip_halt (struct bfe_softc *); 123 static void bfe_core_reset (struct bfe_softc *); 124 static void bfe_core_disable (struct bfe_softc *); 125 static int bfe_dma_alloc (struct bfe_softc *); 126 static void bfe_dma_free (struct bfe_softc *sc); 127 static void bfe_dma_map (void *, bus_dma_segment_t *, int, int); 128 static void bfe_cam_write (struct bfe_softc *, u_char *, int); 129 static int sysctl_bfe_stats (SYSCTL_HANDLER_ARGS); 130 131 static device_method_t bfe_methods[] = { 132 /* Device interface */ 133 DEVMETHOD(device_probe, bfe_probe), 134 DEVMETHOD(device_attach, bfe_attach), 135 DEVMETHOD(device_detach, bfe_detach), 136 DEVMETHOD(device_shutdown, bfe_shutdown), 137 DEVMETHOD(device_suspend, bfe_suspend), 138 DEVMETHOD(device_resume, bfe_resume), 139 140 /* bus interface */ 141 DEVMETHOD(bus_print_child, bus_generic_print_child), 142 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 143 144 /* MII interface */ 145 DEVMETHOD(miibus_readreg, bfe_miibus_readreg), 146 DEVMETHOD(miibus_writereg, bfe_miibus_writereg), 147 DEVMETHOD(miibus_statchg, bfe_miibus_statchg), 148 149 { 0, 0 } 150 }; 151 152 static driver_t bfe_driver = { 153 "bfe", 154 bfe_methods, 155 sizeof(struct bfe_softc) 156 }; 157 158 static devclass_t bfe_devclass; 159 160 DRIVER_MODULE(bfe, pci, bfe_driver, bfe_devclass, 0, 0); 161 DRIVER_MODULE(miibus, bfe, miibus_driver, miibus_devclass, 0, 0); 162 163 /* 164 * Probe for a Broadcom 4401 chip. 165 */ 166 static int 167 bfe_probe(device_t dev) 168 { 169 struct bfe_type *t; 170 171 t = bfe_devs; 172 173 while (t->bfe_name != NULL) { 174 if (pci_get_vendor(dev) == t->bfe_vid && 175 pci_get_device(dev) == t->bfe_did) { 176 device_set_desc(dev, t->bfe_name); 177 return (BUS_PROBE_DEFAULT); 178 } 179 t++; 180 } 181 182 return (ENXIO); 183 } 184 185 struct bfe_dmamap_arg { 186 bus_addr_t bfe_busaddr; 187 }; 188 189 static int 190 bfe_dma_alloc(struct bfe_softc *sc) 191 { 192 struct bfe_dmamap_arg ctx; 193 struct bfe_rx_data *rd; 194 struct bfe_tx_data *td; 195 int error, i; 196 197 /* 198 * parent tag. Apparently the chip cannot handle any DMA address 199 * greater than 1GB. 200 */ 201 error = bus_dma_tag_create(bus_get_dma_tag(sc->bfe_dev), /* parent */ 202 1, 0, /* alignment, boundary */ 203 BFE_DMA_MAXADDR, /* lowaddr */ 204 BUS_SPACE_MAXADDR, /* highaddr */ 205 NULL, NULL, /* filter, filterarg */ 206 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 207 0, /* nsegments */ 208 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 209 0, /* flags */ 210 NULL, NULL, /* lockfunc, lockarg */ 211 &sc->bfe_parent_tag); 212 if (error != 0) { 213 device_printf(sc->bfe_dev, "cannot create parent DMA tag.\n"); 214 goto fail; 215 } 216 217 /* Create tag for Tx ring. */ 218 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */ 219 BFE_TX_RING_ALIGN, 0, /* alignment, boundary */ 220 BUS_SPACE_MAXADDR, /* lowaddr */ 221 BUS_SPACE_MAXADDR, /* highaddr */ 222 NULL, NULL, /* filter, filterarg */ 223 BFE_TX_LIST_SIZE, /* maxsize */ 224 1, /* nsegments */ 225 BFE_TX_LIST_SIZE, /* maxsegsize */ 226 0, /* flags */ 227 NULL, NULL, /* lockfunc, lockarg */ 228 &sc->bfe_tx_tag); 229 if (error != 0) { 230 device_printf(sc->bfe_dev, "cannot create Tx ring DMA tag.\n"); 231 goto fail; 232 } 233 234 /* Create tag for Rx ring. */ 235 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */ 236 BFE_RX_RING_ALIGN, 0, /* alignment, boundary */ 237 BUS_SPACE_MAXADDR, /* lowaddr */ 238 BUS_SPACE_MAXADDR, /* highaddr */ 239 NULL, NULL, /* filter, filterarg */ 240 BFE_RX_LIST_SIZE, /* maxsize */ 241 1, /* nsegments */ 242 BFE_RX_LIST_SIZE, /* maxsegsize */ 243 0, /* flags */ 244 NULL, NULL, /* lockfunc, lockarg */ 245 &sc->bfe_rx_tag); 246 if (error != 0) { 247 device_printf(sc->bfe_dev, "cannot create Rx ring DMA tag.\n"); 248 goto fail; 249 } 250 251 /* Create tag for Tx buffers. */ 252 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */ 253 1, 0, /* alignment, boundary */ 254 BUS_SPACE_MAXADDR, /* lowaddr */ 255 BUS_SPACE_MAXADDR, /* highaddr */ 256 NULL, NULL, /* filter, filterarg */ 257 MCLBYTES * BFE_MAXTXSEGS, /* maxsize */ 258 BFE_MAXTXSEGS, /* nsegments */ 259 MCLBYTES, /* maxsegsize */ 260 0, /* flags */ 261 NULL, NULL, /* lockfunc, lockarg */ 262 &sc->bfe_txmbuf_tag); 263 if (error != 0) { 264 device_printf(sc->bfe_dev, 265 "cannot create Tx buffer DMA tag.\n"); 266 goto fail; 267 } 268 269 /* Create tag for Rx buffers. */ 270 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */ 271 1, 0, /* alignment, boundary */ 272 BUS_SPACE_MAXADDR, /* lowaddr */ 273 BUS_SPACE_MAXADDR, /* highaddr */ 274 NULL, NULL, /* filter, filterarg */ 275 MCLBYTES, /* maxsize */ 276 1, /* nsegments */ 277 MCLBYTES, /* maxsegsize */ 278 0, /* flags */ 279 NULL, NULL, /* lockfunc, lockarg */ 280 &sc->bfe_rxmbuf_tag); 281 if (error != 0) { 282 device_printf(sc->bfe_dev, 283 "cannot create Rx buffer DMA tag.\n"); 284 goto fail; 285 } 286 287 /* Allocate DMA'able memory and load DMA map. */ 288 error = bus_dmamem_alloc(sc->bfe_tx_tag, (void *)&sc->bfe_tx_list, 289 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, &sc->bfe_tx_map); 290 if (error != 0) { 291 device_printf(sc->bfe_dev, 292 "cannot allocate DMA'able memory for Tx ring.\n"); 293 goto fail; 294 } 295 ctx.bfe_busaddr = 0; 296 error = bus_dmamap_load(sc->bfe_tx_tag, sc->bfe_tx_map, 297 sc->bfe_tx_list, BFE_TX_LIST_SIZE, bfe_dma_map, &ctx, 298 BUS_DMA_NOWAIT); 299 if (error != 0 || ctx.bfe_busaddr == 0) { 300 device_printf(sc->bfe_dev, 301 "cannot load DMA'able memory for Tx ring.\n"); 302 goto fail; 303 } 304 sc->bfe_tx_dma = BFE_ADDR_LO(ctx.bfe_busaddr); 305 306 error = bus_dmamem_alloc(sc->bfe_rx_tag, (void *)&sc->bfe_rx_list, 307 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, &sc->bfe_rx_map); 308 if (error != 0) { 309 device_printf(sc->bfe_dev, 310 "cannot allocate DMA'able memory for Rx ring.\n"); 311 goto fail; 312 } 313 ctx.bfe_busaddr = 0; 314 error = bus_dmamap_load(sc->bfe_rx_tag, sc->bfe_rx_map, 315 sc->bfe_rx_list, BFE_RX_LIST_SIZE, bfe_dma_map, &ctx, 316 BUS_DMA_NOWAIT); 317 if (error != 0 || ctx.bfe_busaddr == 0) { 318 device_printf(sc->bfe_dev, 319 "cannot load DMA'able memory for Rx ring.\n"); 320 goto fail; 321 } 322 sc->bfe_rx_dma = BFE_ADDR_LO(ctx.bfe_busaddr); 323 324 /* Create DMA maps for Tx buffers. */ 325 for (i = 0; i < BFE_TX_LIST_CNT; i++) { 326 td = &sc->bfe_tx_ring[i]; 327 td->bfe_mbuf = NULL; 328 td->bfe_map = NULL; 329 error = bus_dmamap_create(sc->bfe_txmbuf_tag, 0, &td->bfe_map); 330 if (error != 0) { 331 device_printf(sc->bfe_dev, 332 "cannot create DMA map for Tx.\n"); 333 goto fail; 334 } 335 } 336 337 /* Create spare DMA map for Rx buffers. */ 338 error = bus_dmamap_create(sc->bfe_rxmbuf_tag, 0, &sc->bfe_rx_sparemap); 339 if (error != 0) { 340 device_printf(sc->bfe_dev, "cannot create spare DMA map for Rx.\n"); 341 goto fail; 342 } 343 /* Create DMA maps for Rx buffers. */ 344 for (i = 0; i < BFE_RX_LIST_CNT; i++) { 345 rd = &sc->bfe_rx_ring[i]; 346 rd->bfe_mbuf = NULL; 347 rd->bfe_map = NULL; 348 rd->bfe_ctrl = 0; 349 error = bus_dmamap_create(sc->bfe_rxmbuf_tag, 0, &rd->bfe_map); 350 if (error != 0) { 351 device_printf(sc->bfe_dev, 352 "cannot create DMA map for Rx.\n"); 353 goto fail; 354 } 355 } 356 357 fail: 358 return (error); 359 } 360 361 static void 362 bfe_dma_free(struct bfe_softc *sc) 363 { 364 struct bfe_tx_data *td; 365 struct bfe_rx_data *rd; 366 int i; 367 368 /* Tx ring. */ 369 if (sc->bfe_tx_tag != NULL) { 370 if (sc->bfe_tx_map != NULL) 371 bus_dmamap_unload(sc->bfe_tx_tag, sc->bfe_tx_map); 372 if (sc->bfe_tx_map != NULL && sc->bfe_tx_list != NULL) 373 bus_dmamem_free(sc->bfe_tx_tag, sc->bfe_tx_list, 374 sc->bfe_tx_map); 375 sc->bfe_tx_map = NULL; 376 sc->bfe_tx_list = NULL; 377 bus_dma_tag_destroy(sc->bfe_tx_tag); 378 sc->bfe_tx_tag = NULL; 379 } 380 381 /* Rx ring. */ 382 if (sc->bfe_rx_tag != NULL) { 383 if (sc->bfe_rx_map != NULL) 384 bus_dmamap_unload(sc->bfe_rx_tag, sc->bfe_rx_map); 385 if (sc->bfe_rx_map != NULL && sc->bfe_rx_list != NULL) 386 bus_dmamem_free(sc->bfe_rx_tag, sc->bfe_rx_list, 387 sc->bfe_rx_map); 388 sc->bfe_rx_map = NULL; 389 sc->bfe_rx_list = NULL; 390 bus_dma_tag_destroy(sc->bfe_rx_tag); 391 sc->bfe_rx_tag = NULL; 392 } 393 394 /* Tx buffers. */ 395 if (sc->bfe_txmbuf_tag != NULL) { 396 for (i = 0; i < BFE_TX_LIST_CNT; i++) { 397 td = &sc->bfe_tx_ring[i]; 398 if (td->bfe_map != NULL) { 399 bus_dmamap_destroy(sc->bfe_txmbuf_tag, 400 td->bfe_map); 401 td->bfe_map = NULL; 402 } 403 } 404 bus_dma_tag_destroy(sc->bfe_txmbuf_tag); 405 sc->bfe_txmbuf_tag = NULL; 406 } 407 408 /* Rx buffers. */ 409 if (sc->bfe_rxmbuf_tag != NULL) { 410 for (i = 0; i < BFE_RX_LIST_CNT; i++) { 411 rd = &sc->bfe_rx_ring[i]; 412 if (rd->bfe_map != NULL) { 413 bus_dmamap_destroy(sc->bfe_rxmbuf_tag, 414 rd->bfe_map); 415 rd->bfe_map = NULL; 416 } 417 } 418 if (sc->bfe_rx_sparemap != NULL) { 419 bus_dmamap_destroy(sc->bfe_rxmbuf_tag, 420 sc->bfe_rx_sparemap); 421 sc->bfe_rx_sparemap = NULL; 422 } 423 bus_dma_tag_destroy(sc->bfe_rxmbuf_tag); 424 sc->bfe_rxmbuf_tag = NULL; 425 } 426 427 if (sc->bfe_parent_tag != NULL) { 428 bus_dma_tag_destroy(sc->bfe_parent_tag); 429 sc->bfe_parent_tag = NULL; 430 } 431 } 432 433 static int 434 bfe_attach(device_t dev) 435 { 436 struct ifnet *ifp = NULL; 437 struct bfe_softc *sc; 438 int error = 0, rid; 439 440 sc = device_get_softc(dev); 441 mtx_init(&sc->bfe_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 442 MTX_DEF); 443 callout_init_mtx(&sc->bfe_stat_co, &sc->bfe_mtx, 0); 444 445 sc->bfe_dev = dev; 446 447 /* 448 * Map control/status registers. 449 */ 450 pci_enable_busmaster(dev); 451 452 rid = PCIR_BAR(0); 453 sc->bfe_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 454 RF_ACTIVE); 455 if (sc->bfe_res == NULL) { 456 device_printf(dev, "couldn't map memory\n"); 457 error = ENXIO; 458 goto fail; 459 } 460 461 /* Allocate interrupt */ 462 rid = 0; 463 464 sc->bfe_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 465 RF_SHAREABLE | RF_ACTIVE); 466 if (sc->bfe_irq == NULL) { 467 device_printf(dev, "couldn't map interrupt\n"); 468 error = ENXIO; 469 goto fail; 470 } 471 472 if (bfe_dma_alloc(sc) != 0) { 473 device_printf(dev, "failed to allocate DMA resources\n"); 474 error = ENXIO; 475 goto fail; 476 } 477 478 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 479 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 480 "stats", CTLTYPE_INT | CTLFLAG_RW, sc, 0, sysctl_bfe_stats, 481 "I", "Statistics"); 482 483 /* Set up ifnet structure */ 484 ifp = sc->bfe_ifp = if_alloc(IFT_ETHER); 485 if (ifp == NULL) { 486 device_printf(dev, "failed to if_alloc()\n"); 487 error = ENOSPC; 488 goto fail; 489 } 490 ifp->if_softc = sc; 491 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 492 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 493 ifp->if_ioctl = bfe_ioctl; 494 ifp->if_start = bfe_start; 495 ifp->if_init = bfe_init; 496 ifp->if_mtu = ETHERMTU; 497 IFQ_SET_MAXLEN(&ifp->if_snd, BFE_TX_QLEN); 498 ifp->if_snd.ifq_drv_maxlen = BFE_TX_QLEN; 499 IFQ_SET_READY(&ifp->if_snd); 500 501 bfe_get_config(sc); 502 503 /* Reset the chip and turn on the PHY */ 504 BFE_LOCK(sc); 505 bfe_chip_reset(sc); 506 BFE_UNLOCK(sc); 507 508 if (mii_phy_probe(dev, &sc->bfe_miibus, 509 bfe_ifmedia_upd, bfe_ifmedia_sts)) { 510 device_printf(dev, "MII without any PHY!\n"); 511 error = ENXIO; 512 goto fail; 513 } 514 515 ether_ifattach(ifp, sc->bfe_enaddr); 516 517 /* 518 * Tell the upper layer(s) we support long frames. 519 */ 520 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 521 ifp->if_capabilities |= IFCAP_VLAN_MTU; 522 ifp->if_capenable |= IFCAP_VLAN_MTU; 523 524 /* 525 * Hook interrupt last to avoid having to lock softc 526 */ 527 error = bus_setup_intr(dev, sc->bfe_irq, INTR_TYPE_NET | INTR_MPSAFE, 528 NULL, bfe_intr, sc, &sc->bfe_intrhand); 529 530 if (error) { 531 device_printf(dev, "couldn't set up irq\n"); 532 goto fail; 533 } 534 fail: 535 if (error != 0) 536 bfe_detach(dev); 537 return (error); 538 } 539 540 static int 541 bfe_detach(device_t dev) 542 { 543 struct bfe_softc *sc; 544 struct ifnet *ifp; 545 546 sc = device_get_softc(dev); 547 548 ifp = sc->bfe_ifp; 549 550 if (device_is_attached(dev)) { 551 BFE_LOCK(sc); 552 sc->bfe_flags |= BFE_FLAG_DETACH; 553 bfe_stop(sc); 554 BFE_UNLOCK(sc); 555 callout_drain(&sc->bfe_stat_co); 556 if (ifp != NULL) 557 ether_ifdetach(ifp); 558 } 559 560 BFE_LOCK(sc); 561 bfe_chip_reset(sc); 562 BFE_UNLOCK(sc); 563 564 bus_generic_detach(dev); 565 if (sc->bfe_miibus != NULL) 566 device_delete_child(dev, sc->bfe_miibus); 567 568 bfe_release_resources(sc); 569 bfe_dma_free(sc); 570 mtx_destroy(&sc->bfe_mtx); 571 572 return (0); 573 } 574 575 /* 576 * Stop all chip I/O so that the kernel's probe routines don't 577 * get confused by errant DMAs when rebooting. 578 */ 579 static int 580 bfe_shutdown(device_t dev) 581 { 582 struct bfe_softc *sc; 583 584 sc = device_get_softc(dev); 585 BFE_LOCK(sc); 586 bfe_stop(sc); 587 588 BFE_UNLOCK(sc); 589 590 return (0); 591 } 592 593 static int 594 bfe_suspend(device_t dev) 595 { 596 struct bfe_softc *sc; 597 598 sc = device_get_softc(dev); 599 BFE_LOCK(sc); 600 bfe_stop(sc); 601 BFE_UNLOCK(sc); 602 603 return (0); 604 } 605 606 static int 607 bfe_resume(device_t dev) 608 { 609 struct bfe_softc *sc; 610 struct ifnet *ifp; 611 612 sc = device_get_softc(dev); 613 ifp = sc->bfe_ifp; 614 BFE_LOCK(sc); 615 bfe_chip_reset(sc); 616 if (ifp->if_flags & IFF_UP) { 617 bfe_init_locked(sc); 618 if (ifp->if_drv_flags & IFF_DRV_RUNNING && 619 !IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 620 bfe_start_locked(ifp); 621 } 622 BFE_UNLOCK(sc); 623 624 return (0); 625 } 626 627 static int 628 bfe_miibus_readreg(device_t dev, int phy, int reg) 629 { 630 struct bfe_softc *sc; 631 u_int32_t ret; 632 633 sc = device_get_softc(dev); 634 if (phy != sc->bfe_phyaddr) 635 return (0); 636 bfe_readphy(sc, reg, &ret); 637 638 return (ret); 639 } 640 641 static int 642 bfe_miibus_writereg(device_t dev, int phy, int reg, int val) 643 { 644 struct bfe_softc *sc; 645 646 sc = device_get_softc(dev); 647 if (phy != sc->bfe_phyaddr) 648 return (0); 649 bfe_writephy(sc, reg, val); 650 651 return (0); 652 } 653 654 static void 655 bfe_miibus_statchg(device_t dev) 656 { 657 struct bfe_softc *sc; 658 struct mii_data *mii; 659 u_int32_t val, flow; 660 661 sc = device_get_softc(dev); 662 mii = device_get_softc(sc->bfe_miibus); 663 664 sc->bfe_flags &= ~BFE_FLAG_LINK; 665 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == 666 (IFM_ACTIVE | IFM_AVALID)) { 667 switch (IFM_SUBTYPE(mii->mii_media_active)) { 668 case IFM_10_T: 669 case IFM_100_TX: 670 sc->bfe_flags |= BFE_FLAG_LINK; 671 break; 672 default: 673 break; 674 } 675 } 676 677 /* XXX Should stop Rx/Tx engine prior to touching MAC. */ 678 val = CSR_READ_4(sc, BFE_TX_CTRL); 679 val &= ~BFE_TX_DUPLEX; 680 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 681 val |= BFE_TX_DUPLEX; 682 flow = 0; 683 #ifdef notyet 684 flow = CSR_READ_4(sc, BFE_RXCONF); 685 flow &= ~BFE_RXCONF_FLOW; 686 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) & 687 IFM_ETH_RXPAUSE) != 0) 688 flow |= BFE_RXCONF_FLOW; 689 CSR_WRITE_4(sc, BFE_RXCONF, flow); 690 /* 691 * It seems that the hardware has Tx pause issues 692 * so enable only Rx pause. 693 */ 694 flow = CSR_READ_4(sc, BFE_MAC_FLOW); 695 flow &= ~BFE_FLOW_PAUSE_ENAB; 696 CSR_WRITE_4(sc, BFE_MAC_FLOW, flow); 697 #endif 698 } 699 CSR_WRITE_4(sc, BFE_TX_CTRL, val); 700 } 701 702 static void 703 bfe_tx_ring_free(struct bfe_softc *sc) 704 { 705 int i; 706 707 for(i = 0; i < BFE_TX_LIST_CNT; i++) { 708 if (sc->bfe_tx_ring[i].bfe_mbuf != NULL) { 709 bus_dmamap_sync(sc->bfe_txmbuf_tag, 710 sc->bfe_tx_ring[i].bfe_map, BUS_DMASYNC_POSTWRITE); 711 bus_dmamap_unload(sc->bfe_txmbuf_tag, 712 sc->bfe_tx_ring[i].bfe_map); 713 m_freem(sc->bfe_tx_ring[i].bfe_mbuf); 714 sc->bfe_tx_ring[i].bfe_mbuf = NULL; 715 } 716 } 717 bzero(sc->bfe_tx_list, BFE_TX_LIST_SIZE); 718 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, 719 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 720 } 721 722 static void 723 bfe_rx_ring_free(struct bfe_softc *sc) 724 { 725 int i; 726 727 for (i = 0; i < BFE_RX_LIST_CNT; i++) { 728 if (sc->bfe_rx_ring[i].bfe_mbuf != NULL) { 729 bus_dmamap_sync(sc->bfe_rxmbuf_tag, 730 sc->bfe_rx_ring[i].bfe_map, BUS_DMASYNC_POSTREAD); 731 bus_dmamap_unload(sc->bfe_rxmbuf_tag, 732 sc->bfe_rx_ring[i].bfe_map); 733 m_freem(sc->bfe_rx_ring[i].bfe_mbuf); 734 sc->bfe_rx_ring[i].bfe_mbuf = NULL; 735 } 736 } 737 bzero(sc->bfe_rx_list, BFE_RX_LIST_SIZE); 738 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, 739 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 740 } 741 742 static int 743 bfe_list_rx_init(struct bfe_softc *sc) 744 { 745 struct bfe_rx_data *rd; 746 int i; 747 748 sc->bfe_rx_prod = sc->bfe_rx_cons = 0; 749 bzero(sc->bfe_rx_list, BFE_RX_LIST_SIZE); 750 for (i = 0; i < BFE_RX_LIST_CNT; i++) { 751 rd = &sc->bfe_rx_ring[i]; 752 rd->bfe_mbuf = NULL; 753 rd->bfe_ctrl = 0; 754 if (bfe_list_newbuf(sc, i) != 0) 755 return (ENOBUFS); 756 } 757 758 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, 759 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 760 CSR_WRITE_4(sc, BFE_DMARX_PTR, (i * sizeof(struct bfe_desc))); 761 762 return (0); 763 } 764 765 static void 766 bfe_list_tx_init(struct bfe_softc *sc) 767 { 768 int i; 769 770 sc->bfe_tx_cnt = sc->bfe_tx_prod = sc->bfe_tx_cons = 0; 771 bzero(sc->bfe_tx_list, BFE_TX_LIST_SIZE); 772 for (i = 0; i < BFE_TX_LIST_CNT; i++) 773 sc->bfe_tx_ring[i].bfe_mbuf = NULL; 774 775 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, 776 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 777 } 778 779 static void 780 bfe_discard_buf(struct bfe_softc *sc, int c) 781 { 782 struct bfe_rx_data *r; 783 struct bfe_desc *d; 784 785 r = &sc->bfe_rx_ring[c]; 786 d = &sc->bfe_rx_list[c]; 787 d->bfe_ctrl = htole32(r->bfe_ctrl); 788 } 789 790 static int 791 bfe_list_newbuf(struct bfe_softc *sc, int c) 792 { 793 struct bfe_rxheader *rx_header; 794 struct bfe_desc *d; 795 struct bfe_rx_data *r; 796 struct mbuf *m; 797 bus_dma_segment_t segs[1]; 798 bus_dmamap_t map; 799 u_int32_t ctrl; 800 int nsegs; 801 802 m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 803 m->m_len = m->m_pkthdr.len = MCLBYTES; 804 805 if (bus_dmamap_load_mbuf_sg(sc->bfe_rxmbuf_tag, sc->bfe_rx_sparemap, 806 m, segs, &nsegs, 0) != 0) { 807 m_freem(m); 808 return (ENOBUFS); 809 } 810 811 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); 812 r = &sc->bfe_rx_ring[c]; 813 if (r->bfe_mbuf != NULL) { 814 bus_dmamap_sync(sc->bfe_rxmbuf_tag, r->bfe_map, 815 BUS_DMASYNC_POSTREAD); 816 bus_dmamap_unload(sc->bfe_rxmbuf_tag, r->bfe_map); 817 } 818 map = r->bfe_map; 819 r->bfe_map = sc->bfe_rx_sparemap; 820 sc->bfe_rx_sparemap = map; 821 r->bfe_mbuf = m; 822 823 rx_header = mtod(m, struct bfe_rxheader *); 824 rx_header->len = 0; 825 rx_header->flags = 0; 826 bus_dmamap_sync(sc->bfe_rxmbuf_tag, r->bfe_map, BUS_DMASYNC_PREREAD); 827 828 ctrl = segs[0].ds_len & BFE_DESC_LEN; 829 KASSERT(ctrl > ETHER_MAX_LEN + 32, ("%s: buffer size too small(%d)!", 830 __func__, ctrl)); 831 if (c == BFE_RX_LIST_CNT - 1) 832 ctrl |= BFE_DESC_EOT; 833 r->bfe_ctrl = ctrl; 834 835 d = &sc->bfe_rx_list[c]; 836 d->bfe_ctrl = htole32(ctrl); 837 /* The chip needs all addresses to be added to BFE_PCI_DMA. */ 838 d->bfe_addr = htole32(BFE_ADDR_LO(segs[0].ds_addr) + BFE_PCI_DMA); 839 840 return (0); 841 } 842 843 static void 844 bfe_get_config(struct bfe_softc *sc) 845 { 846 u_int8_t eeprom[128]; 847 848 bfe_read_eeprom(sc, eeprom); 849 850 sc->bfe_enaddr[0] = eeprom[79]; 851 sc->bfe_enaddr[1] = eeprom[78]; 852 sc->bfe_enaddr[2] = eeprom[81]; 853 sc->bfe_enaddr[3] = eeprom[80]; 854 sc->bfe_enaddr[4] = eeprom[83]; 855 sc->bfe_enaddr[5] = eeprom[82]; 856 857 sc->bfe_phyaddr = eeprom[90] & 0x1f; 858 sc->bfe_mdc_port = (eeprom[90] >> 14) & 0x1; 859 860 sc->bfe_core_unit = 0; 861 sc->bfe_dma_offset = BFE_PCI_DMA; 862 } 863 864 static void 865 bfe_pci_setup(struct bfe_softc *sc, u_int32_t cores) 866 { 867 u_int32_t bar_orig, pci_rev, val; 868 869 bar_orig = pci_read_config(sc->bfe_dev, BFE_BAR0_WIN, 4); 870 pci_write_config(sc->bfe_dev, BFE_BAR0_WIN, BFE_REG_PCI, 4); 871 pci_rev = CSR_READ_4(sc, BFE_SBIDHIGH) & BFE_RC_MASK; 872 873 val = CSR_READ_4(sc, BFE_SBINTVEC); 874 val |= cores; 875 CSR_WRITE_4(sc, BFE_SBINTVEC, val); 876 877 val = CSR_READ_4(sc, BFE_SSB_PCI_TRANS_2); 878 val |= BFE_SSB_PCI_PREF | BFE_SSB_PCI_BURST; 879 CSR_WRITE_4(sc, BFE_SSB_PCI_TRANS_2, val); 880 881 pci_write_config(sc->bfe_dev, BFE_BAR0_WIN, bar_orig, 4); 882 } 883 884 static void 885 bfe_clear_stats(struct bfe_softc *sc) 886 { 887 uint32_t reg; 888 889 BFE_LOCK_ASSERT(sc); 890 891 CSR_WRITE_4(sc, BFE_MIB_CTRL, BFE_MIB_CLR_ON_READ); 892 for (reg = BFE_TX_GOOD_O; reg <= BFE_TX_PAUSE; reg += 4) 893 CSR_READ_4(sc, reg); 894 for (reg = BFE_RX_GOOD_O; reg <= BFE_RX_NPAUSE; reg += 4) 895 CSR_READ_4(sc, reg); 896 } 897 898 static int 899 bfe_resetphy(struct bfe_softc *sc) 900 { 901 u_int32_t val; 902 903 bfe_writephy(sc, 0, BMCR_RESET); 904 DELAY(100); 905 bfe_readphy(sc, 0, &val); 906 if (val & BMCR_RESET) { 907 device_printf(sc->bfe_dev, "PHY Reset would not complete.\n"); 908 return (ENXIO); 909 } 910 return (0); 911 } 912 913 static void 914 bfe_chip_halt(struct bfe_softc *sc) 915 { 916 BFE_LOCK_ASSERT(sc); 917 /* disable interrupts - not that it actually does..*/ 918 CSR_WRITE_4(sc, BFE_IMASK, 0); 919 CSR_READ_4(sc, BFE_IMASK); 920 921 CSR_WRITE_4(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE); 922 bfe_wait_bit(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE, 200, 1); 923 924 CSR_WRITE_4(sc, BFE_DMARX_CTRL, 0); 925 CSR_WRITE_4(sc, BFE_DMATX_CTRL, 0); 926 DELAY(10); 927 } 928 929 static void 930 bfe_chip_reset(struct bfe_softc *sc) 931 { 932 u_int32_t val; 933 934 BFE_LOCK_ASSERT(sc); 935 936 /* Set the interrupt vector for the enet core */ 937 bfe_pci_setup(sc, BFE_INTVEC_ENET0); 938 939 /* is core up? */ 940 val = CSR_READ_4(sc, BFE_SBTMSLOW) & 941 (BFE_RESET | BFE_REJECT | BFE_CLOCK); 942 if (val == BFE_CLOCK) { 943 /* It is, so shut it down */ 944 CSR_WRITE_4(sc, BFE_RCV_LAZY, 0); 945 CSR_WRITE_4(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE); 946 bfe_wait_bit(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE, 100, 1); 947 CSR_WRITE_4(sc, BFE_DMATX_CTRL, 0); 948 if (CSR_READ_4(sc, BFE_DMARX_STAT) & BFE_STAT_EMASK) 949 bfe_wait_bit(sc, BFE_DMARX_STAT, BFE_STAT_SIDLE, 950 100, 0); 951 CSR_WRITE_4(sc, BFE_DMARX_CTRL, 0); 952 } 953 954 bfe_core_reset(sc); 955 bfe_clear_stats(sc); 956 957 /* 958 * We want the phy registers to be accessible even when 959 * the driver is "downed" so initialize MDC preamble, frequency, 960 * and whether internal or external phy here. 961 */ 962 963 /* 4402 has 62.5Mhz SB clock and internal phy */ 964 CSR_WRITE_4(sc, BFE_MDIO_CTRL, 0x8d); 965 966 /* Internal or external PHY? */ 967 val = CSR_READ_4(sc, BFE_DEVCTRL); 968 if (!(val & BFE_IPP)) 969 CSR_WRITE_4(sc, BFE_ENET_CTRL, BFE_ENET_EPSEL); 970 else if (CSR_READ_4(sc, BFE_DEVCTRL) & BFE_EPR) { 971 BFE_AND(sc, BFE_DEVCTRL, ~BFE_EPR); 972 DELAY(100); 973 } 974 975 /* Enable CRC32 generation and set proper LED modes */ 976 BFE_OR(sc, BFE_MAC_CTRL, BFE_CTRL_CRC32_ENAB | BFE_CTRL_LED); 977 978 /* Reset or clear powerdown control bit */ 979 BFE_AND(sc, BFE_MAC_CTRL, ~BFE_CTRL_PDOWN); 980 981 CSR_WRITE_4(sc, BFE_RCV_LAZY, ((1 << BFE_LAZY_FC_SHIFT) & 982 BFE_LAZY_FC_MASK)); 983 984 /* 985 * We don't want lazy interrupts, so just send them at 986 * the end of a frame, please 987 */ 988 BFE_OR(sc, BFE_RCV_LAZY, 0); 989 990 /* Set max lengths, accounting for VLAN tags */ 991 CSR_WRITE_4(sc, BFE_RXMAXLEN, ETHER_MAX_LEN+32); 992 CSR_WRITE_4(sc, BFE_TXMAXLEN, ETHER_MAX_LEN+32); 993 994 /* Set watermark XXX - magic */ 995 CSR_WRITE_4(sc, BFE_TX_WMARK, 56); 996 997 /* 998 * Initialise DMA channels 999 * - not forgetting dma addresses need to be added to BFE_PCI_DMA 1000 */ 1001 CSR_WRITE_4(sc, BFE_DMATX_CTRL, BFE_TX_CTRL_ENABLE); 1002 CSR_WRITE_4(sc, BFE_DMATX_ADDR, sc->bfe_tx_dma + BFE_PCI_DMA); 1003 1004 CSR_WRITE_4(sc, BFE_DMARX_CTRL, (BFE_RX_OFFSET << BFE_RX_CTRL_ROSHIFT) | 1005 BFE_RX_CTRL_ENABLE); 1006 CSR_WRITE_4(sc, BFE_DMARX_ADDR, sc->bfe_rx_dma + BFE_PCI_DMA); 1007 1008 bfe_resetphy(sc); 1009 bfe_setupphy(sc); 1010 } 1011 1012 static void 1013 bfe_core_disable(struct bfe_softc *sc) 1014 { 1015 if ((CSR_READ_4(sc, BFE_SBTMSLOW)) & BFE_RESET) 1016 return; 1017 1018 /* 1019 * Set reject, wait for it set, then wait for the core to stop 1020 * being busy, then set reset and reject and enable the clocks. 1021 */ 1022 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_REJECT | BFE_CLOCK)); 1023 bfe_wait_bit(sc, BFE_SBTMSLOW, BFE_REJECT, 1000, 0); 1024 bfe_wait_bit(sc, BFE_SBTMSHIGH, BFE_BUSY, 1000, 1); 1025 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_FGC | BFE_CLOCK | BFE_REJECT | 1026 BFE_RESET)); 1027 CSR_READ_4(sc, BFE_SBTMSLOW); 1028 DELAY(10); 1029 /* Leave reset and reject set */ 1030 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_REJECT | BFE_RESET)); 1031 DELAY(10); 1032 } 1033 1034 static void 1035 bfe_core_reset(struct bfe_softc *sc) 1036 { 1037 u_int32_t val; 1038 1039 /* Disable the core */ 1040 bfe_core_disable(sc); 1041 1042 /* and bring it back up */ 1043 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_RESET | BFE_CLOCK | BFE_FGC)); 1044 CSR_READ_4(sc, BFE_SBTMSLOW); 1045 DELAY(10); 1046 1047 /* Chip bug, clear SERR, IB and TO if they are set. */ 1048 if (CSR_READ_4(sc, BFE_SBTMSHIGH) & BFE_SERR) 1049 CSR_WRITE_4(sc, BFE_SBTMSHIGH, 0); 1050 val = CSR_READ_4(sc, BFE_SBIMSTATE); 1051 if (val & (BFE_IBE | BFE_TO)) 1052 CSR_WRITE_4(sc, BFE_SBIMSTATE, val & ~(BFE_IBE | BFE_TO)); 1053 1054 /* Clear reset and allow it to move through the core */ 1055 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_CLOCK | BFE_FGC)); 1056 CSR_READ_4(sc, BFE_SBTMSLOW); 1057 DELAY(10); 1058 1059 /* Leave the clock set */ 1060 CSR_WRITE_4(sc, BFE_SBTMSLOW, BFE_CLOCK); 1061 CSR_READ_4(sc, BFE_SBTMSLOW); 1062 DELAY(10); 1063 } 1064 1065 static void 1066 bfe_cam_write(struct bfe_softc *sc, u_char *data, int index) 1067 { 1068 u_int32_t val; 1069 1070 val = ((u_int32_t) data[2]) << 24; 1071 val |= ((u_int32_t) data[3]) << 16; 1072 val |= ((u_int32_t) data[4]) << 8; 1073 val |= ((u_int32_t) data[5]); 1074 CSR_WRITE_4(sc, BFE_CAM_DATA_LO, val); 1075 val = (BFE_CAM_HI_VALID | 1076 (((u_int32_t) data[0]) << 8) | 1077 (((u_int32_t) data[1]))); 1078 CSR_WRITE_4(sc, BFE_CAM_DATA_HI, val); 1079 CSR_WRITE_4(sc, BFE_CAM_CTRL, (BFE_CAM_WRITE | 1080 ((u_int32_t) index << BFE_CAM_INDEX_SHIFT))); 1081 bfe_wait_bit(sc, BFE_CAM_CTRL, BFE_CAM_BUSY, 10000, 1); 1082 } 1083 1084 static void 1085 bfe_set_rx_mode(struct bfe_softc *sc) 1086 { 1087 struct ifnet *ifp = sc->bfe_ifp; 1088 struct ifmultiaddr *ifma; 1089 u_int32_t val; 1090 int i = 0; 1091 1092 BFE_LOCK_ASSERT(sc); 1093 1094 val = CSR_READ_4(sc, BFE_RXCONF); 1095 1096 if (ifp->if_flags & IFF_PROMISC) 1097 val |= BFE_RXCONF_PROMISC; 1098 else 1099 val &= ~BFE_RXCONF_PROMISC; 1100 1101 if (ifp->if_flags & IFF_BROADCAST) 1102 val &= ~BFE_RXCONF_DBCAST; 1103 else 1104 val |= BFE_RXCONF_DBCAST; 1105 1106 1107 CSR_WRITE_4(sc, BFE_CAM_CTRL, 0); 1108 bfe_cam_write(sc, IF_LLADDR(sc->bfe_ifp), i++); 1109 1110 if (ifp->if_flags & IFF_ALLMULTI) 1111 val |= BFE_RXCONF_ALLMULTI; 1112 else { 1113 val &= ~BFE_RXCONF_ALLMULTI; 1114 IF_ADDR_LOCK(ifp); 1115 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1116 if (ifma->ifma_addr->sa_family != AF_LINK) 1117 continue; 1118 bfe_cam_write(sc, 1119 LLADDR((struct sockaddr_dl *)ifma->ifma_addr), i++); 1120 } 1121 IF_ADDR_UNLOCK(ifp); 1122 } 1123 1124 CSR_WRITE_4(sc, BFE_RXCONF, val); 1125 BFE_OR(sc, BFE_CAM_CTRL, BFE_CAM_ENABLE); 1126 } 1127 1128 static void 1129 bfe_dma_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1130 { 1131 struct bfe_dmamap_arg *ctx; 1132 1133 if (error != 0) 1134 return; 1135 1136 KASSERT(nseg == 1, ("%s : %d segments returned!", __func__, nseg)); 1137 1138 ctx = (struct bfe_dmamap_arg *)arg; 1139 ctx->bfe_busaddr = segs[0].ds_addr; 1140 } 1141 1142 static void 1143 bfe_release_resources(struct bfe_softc *sc) 1144 { 1145 1146 if (sc->bfe_intrhand != NULL) 1147 bus_teardown_intr(sc->bfe_dev, sc->bfe_irq, sc->bfe_intrhand); 1148 1149 if (sc->bfe_irq != NULL) 1150 bus_release_resource(sc->bfe_dev, SYS_RES_IRQ, 0, sc->bfe_irq); 1151 1152 if (sc->bfe_res != NULL) 1153 bus_release_resource(sc->bfe_dev, SYS_RES_MEMORY, PCIR_BAR(0), 1154 sc->bfe_res); 1155 1156 if (sc->bfe_ifp != NULL) 1157 if_free(sc->bfe_ifp); 1158 } 1159 1160 static void 1161 bfe_read_eeprom(struct bfe_softc *sc, u_int8_t *data) 1162 { 1163 long i; 1164 u_int16_t *ptr = (u_int16_t *)data; 1165 1166 for(i = 0; i < 128; i += 2) 1167 ptr[i/2] = CSR_READ_4(sc, 4096 + i); 1168 } 1169 1170 static int 1171 bfe_wait_bit(struct bfe_softc *sc, u_int32_t reg, u_int32_t bit, 1172 u_long timeout, const int clear) 1173 { 1174 u_long i; 1175 1176 for (i = 0; i < timeout; i++) { 1177 u_int32_t val = CSR_READ_4(sc, reg); 1178 1179 if (clear && !(val & bit)) 1180 break; 1181 if (!clear && (val & bit)) 1182 break; 1183 DELAY(10); 1184 } 1185 if (i == timeout) { 1186 device_printf(sc->bfe_dev, 1187 "BUG! Timeout waiting for bit %08x of register " 1188 "%x to %s.\n", bit, reg, (clear ? "clear" : "set")); 1189 return (-1); 1190 } 1191 return (0); 1192 } 1193 1194 static int 1195 bfe_readphy(struct bfe_softc *sc, u_int32_t reg, u_int32_t *val) 1196 { 1197 int err; 1198 1199 /* Clear MII ISR */ 1200 CSR_WRITE_4(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII); 1201 CSR_WRITE_4(sc, BFE_MDIO_DATA, (BFE_MDIO_SB_START | 1202 (BFE_MDIO_OP_READ << BFE_MDIO_OP_SHIFT) | 1203 (sc->bfe_phyaddr << BFE_MDIO_PMD_SHIFT) | 1204 (reg << BFE_MDIO_RA_SHIFT) | 1205 (BFE_MDIO_TA_VALID << BFE_MDIO_TA_SHIFT))); 1206 err = bfe_wait_bit(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII, 100, 0); 1207 *val = CSR_READ_4(sc, BFE_MDIO_DATA) & BFE_MDIO_DATA_DATA; 1208 1209 return (err); 1210 } 1211 1212 static int 1213 bfe_writephy(struct bfe_softc *sc, u_int32_t reg, u_int32_t val) 1214 { 1215 int status; 1216 1217 CSR_WRITE_4(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII); 1218 CSR_WRITE_4(sc, BFE_MDIO_DATA, (BFE_MDIO_SB_START | 1219 (BFE_MDIO_OP_WRITE << BFE_MDIO_OP_SHIFT) | 1220 (sc->bfe_phyaddr << BFE_MDIO_PMD_SHIFT) | 1221 (reg << BFE_MDIO_RA_SHIFT) | 1222 (BFE_MDIO_TA_VALID << BFE_MDIO_TA_SHIFT) | 1223 (val & BFE_MDIO_DATA_DATA))); 1224 status = bfe_wait_bit(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII, 100, 0); 1225 1226 return (status); 1227 } 1228 1229 /* 1230 * XXX - I think this is handled by the PHY driver, but it can't hurt to do it 1231 * twice 1232 */ 1233 static int 1234 bfe_setupphy(struct bfe_softc *sc) 1235 { 1236 u_int32_t val; 1237 1238 /* Enable activity LED */ 1239 bfe_readphy(sc, 26, &val); 1240 bfe_writephy(sc, 26, val & 0x7fff); 1241 bfe_readphy(sc, 26, &val); 1242 1243 /* Enable traffic meter LED mode */ 1244 bfe_readphy(sc, 27, &val); 1245 bfe_writephy(sc, 27, val | (1 << 6)); 1246 1247 return (0); 1248 } 1249 1250 static void 1251 bfe_stats_update(struct bfe_softc *sc) 1252 { 1253 struct bfe_hw_stats *stats; 1254 struct ifnet *ifp; 1255 uint32_t mib[BFE_MIB_CNT]; 1256 uint32_t reg, *val; 1257 1258 BFE_LOCK_ASSERT(sc); 1259 1260 val = mib; 1261 CSR_WRITE_4(sc, BFE_MIB_CTRL, BFE_MIB_CLR_ON_READ); 1262 for (reg = BFE_TX_GOOD_O; reg <= BFE_TX_PAUSE; reg += 4) 1263 *val++ = CSR_READ_4(sc, reg); 1264 for (reg = BFE_RX_GOOD_O; reg <= BFE_RX_NPAUSE; reg += 4) 1265 *val++ = CSR_READ_4(sc, reg); 1266 1267 ifp = sc->bfe_ifp; 1268 stats = &sc->bfe_stats; 1269 /* Tx stat. */ 1270 stats->tx_good_octets += mib[MIB_TX_GOOD_O]; 1271 stats->tx_good_frames += mib[MIB_TX_GOOD_P]; 1272 stats->tx_octets += mib[MIB_TX_O]; 1273 stats->tx_frames += mib[MIB_TX_P]; 1274 stats->tx_bcast_frames += mib[MIB_TX_BCAST]; 1275 stats->tx_mcast_frames += mib[MIB_TX_MCAST]; 1276 stats->tx_pkts_64 += mib[MIB_TX_64]; 1277 stats->tx_pkts_65_127 += mib[MIB_TX_65_127]; 1278 stats->tx_pkts_128_255 += mib[MIB_TX_128_255]; 1279 stats->tx_pkts_256_511 += mib[MIB_TX_256_511]; 1280 stats->tx_pkts_512_1023 += mib[MIB_TX_512_1023]; 1281 stats->tx_pkts_1024_max += mib[MIB_TX_1024_MAX]; 1282 stats->tx_jabbers += mib[MIB_TX_JABBER]; 1283 stats->tx_oversize_frames += mib[MIB_TX_OSIZE]; 1284 stats->tx_frag_frames += mib[MIB_TX_FRAG]; 1285 stats->tx_underruns += mib[MIB_TX_URUNS]; 1286 stats->tx_colls += mib[MIB_TX_TCOLS]; 1287 stats->tx_single_colls += mib[MIB_TX_SCOLS]; 1288 stats->tx_multi_colls += mib[MIB_TX_MCOLS]; 1289 stats->tx_excess_colls += mib[MIB_TX_ECOLS]; 1290 stats->tx_late_colls += mib[MIB_TX_LCOLS]; 1291 stats->tx_deferrals += mib[MIB_TX_DEFERED]; 1292 stats->tx_carrier_losts += mib[MIB_TX_CLOST]; 1293 stats->tx_pause_frames += mib[MIB_TX_PAUSE]; 1294 /* Rx stat. */ 1295 stats->rx_good_octets += mib[MIB_RX_GOOD_O]; 1296 stats->rx_good_frames += mib[MIB_RX_GOOD_P]; 1297 stats->rx_octets += mib[MIB_RX_O]; 1298 stats->rx_frames += mib[MIB_RX_P]; 1299 stats->rx_bcast_frames += mib[MIB_RX_BCAST]; 1300 stats->rx_mcast_frames += mib[MIB_RX_MCAST]; 1301 stats->rx_pkts_64 += mib[MIB_RX_64]; 1302 stats->rx_pkts_65_127 += mib[MIB_RX_65_127]; 1303 stats->rx_pkts_128_255 += mib[MIB_RX_128_255]; 1304 stats->rx_pkts_256_511 += mib[MIB_RX_256_511]; 1305 stats->rx_pkts_512_1023 += mib[MIB_RX_512_1023]; 1306 stats->rx_pkts_1024_max += mib[MIB_RX_1024_MAX]; 1307 stats->rx_jabbers += mib[MIB_RX_JABBER]; 1308 stats->rx_oversize_frames += mib[MIB_RX_OSIZE]; 1309 stats->rx_frag_frames += mib[MIB_RX_FRAG]; 1310 stats->rx_missed_frames += mib[MIB_RX_MISS]; 1311 stats->rx_crc_align_errs += mib[MIB_RX_CRCA]; 1312 stats->rx_runts += mib[MIB_RX_USIZE]; 1313 stats->rx_crc_errs += mib[MIB_RX_CRC]; 1314 stats->rx_align_errs += mib[MIB_RX_ALIGN]; 1315 stats->rx_symbol_errs += mib[MIB_RX_SYM]; 1316 stats->rx_pause_frames += mib[MIB_RX_PAUSE]; 1317 stats->rx_control_frames += mib[MIB_RX_NPAUSE]; 1318 1319 /* Update counters in ifnet. */ 1320 ifp->if_opackets += (u_long)mib[MIB_TX_GOOD_P]; 1321 ifp->if_collisions += (u_long)mib[MIB_TX_TCOLS]; 1322 ifp->if_oerrors += (u_long)mib[MIB_TX_URUNS] + 1323 (u_long)mib[MIB_TX_ECOLS] + 1324 (u_long)mib[MIB_TX_DEFERED] + 1325 (u_long)mib[MIB_TX_CLOST]; 1326 1327 ifp->if_ipackets += (u_long)mib[MIB_RX_GOOD_P]; 1328 1329 ifp->if_ierrors += mib[MIB_RX_JABBER] + 1330 mib[MIB_RX_MISS] + 1331 mib[MIB_RX_CRCA] + 1332 mib[MIB_RX_USIZE] + 1333 mib[MIB_RX_CRC] + 1334 mib[MIB_RX_ALIGN] + 1335 mib[MIB_RX_SYM]; 1336 } 1337 1338 static void 1339 bfe_txeof(struct bfe_softc *sc) 1340 { 1341 struct bfe_tx_data *r; 1342 struct ifnet *ifp; 1343 int i, chipidx; 1344 1345 BFE_LOCK_ASSERT(sc); 1346 1347 ifp = sc->bfe_ifp; 1348 1349 chipidx = CSR_READ_4(sc, BFE_DMATX_STAT) & BFE_STAT_CDMASK; 1350 chipidx /= sizeof(struct bfe_desc); 1351 1352 i = sc->bfe_tx_cons; 1353 if (i == chipidx) 1354 return; 1355 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, 1356 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1357 /* Go through the mbufs and free those that have been transmitted */ 1358 for (; i != chipidx; BFE_INC(i, BFE_TX_LIST_CNT)) { 1359 r = &sc->bfe_tx_ring[i]; 1360 sc->bfe_tx_cnt--; 1361 if (r->bfe_mbuf == NULL) 1362 continue; 1363 bus_dmamap_sync(sc->bfe_txmbuf_tag, r->bfe_map, 1364 BUS_DMASYNC_POSTWRITE); 1365 bus_dmamap_unload(sc->bfe_txmbuf_tag, r->bfe_map); 1366 1367 m_freem(r->bfe_mbuf); 1368 r->bfe_mbuf = NULL; 1369 } 1370 1371 if (i != sc->bfe_tx_cons) { 1372 /* we freed up some mbufs */ 1373 sc->bfe_tx_cons = i; 1374 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1375 } 1376 1377 if (sc->bfe_tx_cnt == 0) 1378 sc->bfe_watchdog_timer = 0; 1379 } 1380 1381 /* Pass a received packet up the stack */ 1382 static void 1383 bfe_rxeof(struct bfe_softc *sc) 1384 { 1385 struct mbuf *m; 1386 struct ifnet *ifp; 1387 struct bfe_rxheader *rxheader; 1388 struct bfe_rx_data *r; 1389 int cons, prog; 1390 u_int32_t status, current, len, flags; 1391 1392 BFE_LOCK_ASSERT(sc); 1393 cons = sc->bfe_rx_cons; 1394 status = CSR_READ_4(sc, BFE_DMARX_STAT); 1395 current = (status & BFE_STAT_CDMASK) / sizeof(struct bfe_desc); 1396 1397 ifp = sc->bfe_ifp; 1398 1399 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, 1400 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1401 1402 for (prog = 0; current != cons; prog++, 1403 BFE_INC(cons, BFE_RX_LIST_CNT)) { 1404 r = &sc->bfe_rx_ring[cons]; 1405 m = r->bfe_mbuf; 1406 /* 1407 * Rx status should be read from mbuf such that we can't 1408 * delay bus_dmamap_sync(9). This hardware limiation 1409 * results in inefficent mbuf usage as bfe(4) couldn't 1410 * reuse mapped buffer from errored frame. 1411 */ 1412 if (bfe_list_newbuf(sc, cons) != 0) { 1413 ifp->if_iqdrops++; 1414 bfe_discard_buf(sc, cons); 1415 continue; 1416 } 1417 rxheader = mtod(m, struct bfe_rxheader*); 1418 len = le16toh(rxheader->len); 1419 flags = le16toh(rxheader->flags); 1420 1421 /* Remove CRC bytes. */ 1422 len -= ETHER_CRC_LEN; 1423 1424 /* flag an error and try again */ 1425 if ((len > ETHER_MAX_LEN+32) || (flags & BFE_RX_FLAG_ERRORS)) { 1426 m_freem(m); 1427 continue; 1428 } 1429 1430 /* Make sure to skip header bytes written by hardware. */ 1431 m_adj(m, BFE_RX_OFFSET); 1432 m->m_len = m->m_pkthdr.len = len; 1433 1434 m->m_pkthdr.rcvif = ifp; 1435 BFE_UNLOCK(sc); 1436 (*ifp->if_input)(ifp, m); 1437 BFE_LOCK(sc); 1438 } 1439 1440 if (prog > 0) { 1441 sc->bfe_rx_cons = cons; 1442 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, 1443 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1444 } 1445 } 1446 1447 static void 1448 bfe_intr(void *xsc) 1449 { 1450 struct bfe_softc *sc = xsc; 1451 struct ifnet *ifp; 1452 u_int32_t istat; 1453 1454 ifp = sc->bfe_ifp; 1455 1456 BFE_LOCK(sc); 1457 1458 istat = CSR_READ_4(sc, BFE_ISTAT); 1459 1460 /* 1461 * Defer unsolicited interrupts - This is necessary because setting the 1462 * chips interrupt mask register to 0 doesn't actually stop the 1463 * interrupts 1464 */ 1465 istat &= BFE_IMASK_DEF; 1466 CSR_WRITE_4(sc, BFE_ISTAT, istat); 1467 CSR_READ_4(sc, BFE_ISTAT); 1468 1469 /* not expecting this interrupt, disregard it */ 1470 if (istat == 0 || (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1471 BFE_UNLOCK(sc); 1472 return; 1473 } 1474 1475 /* A packet was received */ 1476 if (istat & BFE_ISTAT_RX) 1477 bfe_rxeof(sc); 1478 1479 /* A packet was sent */ 1480 if (istat & BFE_ISTAT_TX) 1481 bfe_txeof(sc); 1482 1483 if (istat & BFE_ISTAT_ERRORS) { 1484 1485 if (istat & BFE_ISTAT_DSCE) { 1486 device_printf(sc->bfe_dev, "Descriptor Error\n"); 1487 bfe_stop(sc); 1488 BFE_UNLOCK(sc); 1489 return; 1490 } 1491 1492 if (istat & BFE_ISTAT_DPE) { 1493 device_printf(sc->bfe_dev, 1494 "Descriptor Protocol Error\n"); 1495 bfe_stop(sc); 1496 BFE_UNLOCK(sc); 1497 return; 1498 } 1499 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1500 bfe_init_locked(sc); 1501 } 1502 1503 /* We have packets pending, fire them out */ 1504 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1505 bfe_start_locked(ifp); 1506 1507 BFE_UNLOCK(sc); 1508 } 1509 1510 static int 1511 bfe_encap(struct bfe_softc *sc, struct mbuf **m_head) 1512 { 1513 struct bfe_desc *d; 1514 struct bfe_tx_data *r, *r1; 1515 struct mbuf *m; 1516 bus_dmamap_t map; 1517 bus_dma_segment_t txsegs[BFE_MAXTXSEGS]; 1518 uint32_t cur, si; 1519 int error, i, nsegs; 1520 1521 BFE_LOCK_ASSERT(sc); 1522 1523 M_ASSERTPKTHDR((*m_head)); 1524 1525 si = cur = sc->bfe_tx_prod; 1526 r = &sc->bfe_tx_ring[cur]; 1527 error = bus_dmamap_load_mbuf_sg(sc->bfe_txmbuf_tag, r->bfe_map, *m_head, 1528 txsegs, &nsegs, 0); 1529 if (error == EFBIG) { 1530 m = m_collapse(*m_head, M_DONTWAIT, BFE_MAXTXSEGS); 1531 if (m == NULL) { 1532 m_freem(*m_head); 1533 *m_head = NULL; 1534 return (ENOMEM); 1535 } 1536 *m_head = m; 1537 error = bus_dmamap_load_mbuf_sg(sc->bfe_txmbuf_tag, r->bfe_map, 1538 *m_head, txsegs, &nsegs, 0); 1539 if (error != 0) { 1540 m_freem(*m_head); 1541 *m_head = NULL; 1542 return (error); 1543 } 1544 } else if (error != 0) 1545 return (error); 1546 if (nsegs == 0) { 1547 m_freem(*m_head); 1548 *m_head = NULL; 1549 return (EIO); 1550 } 1551 1552 if (sc->bfe_tx_cnt + nsegs > BFE_TX_LIST_CNT - 1) { 1553 bus_dmamap_unload(sc->bfe_txmbuf_tag, r->bfe_map); 1554 return (ENOBUFS); 1555 } 1556 1557 for (i = 0; i < nsegs; i++) { 1558 d = &sc->bfe_tx_list[cur]; 1559 d->bfe_ctrl = htole32(txsegs[i].ds_len & BFE_DESC_LEN); 1560 d->bfe_ctrl |= htole32(BFE_DESC_IOC); 1561 if (cur == BFE_TX_LIST_CNT - 1) 1562 /* 1563 * Tell the chip to wrap to the start of 1564 * the descriptor list. 1565 */ 1566 d->bfe_ctrl |= htole32(BFE_DESC_EOT); 1567 /* The chip needs all addresses to be added to BFE_PCI_DMA. */ 1568 d->bfe_addr = htole32(BFE_ADDR_LO(txsegs[i].ds_addr) + 1569 BFE_PCI_DMA); 1570 BFE_INC(cur, BFE_TX_LIST_CNT); 1571 } 1572 1573 /* Update producer index. */ 1574 sc->bfe_tx_prod = cur; 1575 1576 /* Set EOF on the last descriptor. */ 1577 cur = (cur + BFE_TX_LIST_CNT - 1) % BFE_TX_LIST_CNT; 1578 d = &sc->bfe_tx_list[cur]; 1579 d->bfe_ctrl |= htole32(BFE_DESC_EOF); 1580 1581 /* Lastly set SOF on the first descriptor to avoid races. */ 1582 d = &sc->bfe_tx_list[si]; 1583 d->bfe_ctrl |= htole32(BFE_DESC_SOF); 1584 1585 r1 = &sc->bfe_tx_ring[cur]; 1586 map = r->bfe_map; 1587 r->bfe_map = r1->bfe_map; 1588 r1->bfe_map = map; 1589 r1->bfe_mbuf = *m_head; 1590 sc->bfe_tx_cnt += nsegs; 1591 1592 bus_dmamap_sync(sc->bfe_txmbuf_tag, map, BUS_DMASYNC_PREWRITE); 1593 1594 return (0); 1595 } 1596 1597 /* 1598 * Set up to transmit a packet. 1599 */ 1600 static void 1601 bfe_start(struct ifnet *ifp) 1602 { 1603 BFE_LOCK((struct bfe_softc *)ifp->if_softc); 1604 bfe_start_locked(ifp); 1605 BFE_UNLOCK((struct bfe_softc *)ifp->if_softc); 1606 } 1607 1608 /* 1609 * Set up to transmit a packet. The softc is already locked. 1610 */ 1611 static void 1612 bfe_start_locked(struct ifnet *ifp) 1613 { 1614 struct bfe_softc *sc; 1615 struct mbuf *m_head; 1616 int queued; 1617 1618 sc = ifp->if_softc; 1619 1620 BFE_LOCK_ASSERT(sc); 1621 1622 /* 1623 * Not much point trying to send if the link is down 1624 * or we have nothing to send. 1625 */ 1626 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 1627 IFF_DRV_RUNNING || (sc->bfe_flags & BFE_FLAG_LINK) == 0) 1628 return; 1629 1630 for (queued = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) && 1631 sc->bfe_tx_cnt < BFE_TX_LIST_CNT - 1;) { 1632 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 1633 if (m_head == NULL) 1634 break; 1635 1636 /* 1637 * Pack the data into the tx ring. If we dont have 1638 * enough room, let the chip drain the ring. 1639 */ 1640 if (bfe_encap(sc, &m_head)) { 1641 if (m_head == NULL) 1642 break; 1643 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 1644 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1645 break; 1646 } 1647 1648 queued++; 1649 1650 /* 1651 * If there's a BPF listener, bounce a copy of this frame 1652 * to him. 1653 */ 1654 BPF_MTAP(ifp, m_head); 1655 } 1656 1657 if (queued) { 1658 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, 1659 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1660 /* Transmit - twice due to apparent hardware bug */ 1661 CSR_WRITE_4(sc, BFE_DMATX_PTR, 1662 sc->bfe_tx_prod * sizeof(struct bfe_desc)); 1663 /* 1664 * XXX It seems the following write is not necessary 1665 * to kick Tx command. What might be required would be 1666 * a way flushing PCI posted write. Reading the register 1667 * back ensures the flush operation. In addition, 1668 * hardware will execute PCI posted write in the long 1669 * run and watchdog timer for the kick command was set 1670 * to 5 seconds. Therefore I think the second write 1671 * access is not necessary or could be replaced with 1672 * read operation. 1673 */ 1674 CSR_WRITE_4(sc, BFE_DMATX_PTR, 1675 sc->bfe_tx_prod * sizeof(struct bfe_desc)); 1676 1677 /* 1678 * Set a timeout in case the chip goes out to lunch. 1679 */ 1680 sc->bfe_watchdog_timer = 5; 1681 } 1682 } 1683 1684 static void 1685 bfe_init(void *xsc) 1686 { 1687 BFE_LOCK((struct bfe_softc *)xsc); 1688 bfe_init_locked(xsc); 1689 BFE_UNLOCK((struct bfe_softc *)xsc); 1690 } 1691 1692 static void 1693 bfe_init_locked(void *xsc) 1694 { 1695 struct bfe_softc *sc = (struct bfe_softc*)xsc; 1696 struct ifnet *ifp = sc->bfe_ifp; 1697 struct mii_data *mii; 1698 1699 BFE_LOCK_ASSERT(sc); 1700 1701 mii = device_get_softc(sc->bfe_miibus); 1702 1703 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1704 return; 1705 1706 bfe_stop(sc); 1707 bfe_chip_reset(sc); 1708 1709 if (bfe_list_rx_init(sc) == ENOBUFS) { 1710 device_printf(sc->bfe_dev, 1711 "%s: Not enough memory for list buffers\n", __func__); 1712 bfe_stop(sc); 1713 return; 1714 } 1715 bfe_list_tx_init(sc); 1716 1717 bfe_set_rx_mode(sc); 1718 1719 /* Enable the chip and core */ 1720 BFE_OR(sc, BFE_ENET_CTRL, BFE_ENET_ENABLE); 1721 /* Enable interrupts */ 1722 CSR_WRITE_4(sc, BFE_IMASK, BFE_IMASK_DEF); 1723 1724 /* Clear link state and change media. */ 1725 sc->bfe_flags &= ~BFE_FLAG_LINK; 1726 mii_mediachg(mii); 1727 1728 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1729 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1730 1731 callout_reset(&sc->bfe_stat_co, hz, bfe_tick, sc); 1732 } 1733 1734 /* 1735 * Set media options. 1736 */ 1737 static int 1738 bfe_ifmedia_upd(struct ifnet *ifp) 1739 { 1740 struct bfe_softc *sc; 1741 struct mii_data *mii; 1742 int error; 1743 1744 sc = ifp->if_softc; 1745 BFE_LOCK(sc); 1746 1747 mii = device_get_softc(sc->bfe_miibus); 1748 if (mii->mii_instance) { 1749 struct mii_softc *miisc; 1750 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL; 1751 miisc = LIST_NEXT(miisc, mii_list)) 1752 mii_phy_reset(miisc); 1753 } 1754 error = mii_mediachg(mii); 1755 BFE_UNLOCK(sc); 1756 1757 return (error); 1758 } 1759 1760 /* 1761 * Report current media status. 1762 */ 1763 static void 1764 bfe_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 1765 { 1766 struct bfe_softc *sc = ifp->if_softc; 1767 struct mii_data *mii; 1768 1769 BFE_LOCK(sc); 1770 mii = device_get_softc(sc->bfe_miibus); 1771 mii_pollstat(mii); 1772 ifmr->ifm_active = mii->mii_media_active; 1773 ifmr->ifm_status = mii->mii_media_status; 1774 BFE_UNLOCK(sc); 1775 } 1776 1777 static int 1778 bfe_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 1779 { 1780 struct bfe_softc *sc = ifp->if_softc; 1781 struct ifreq *ifr = (struct ifreq *) data; 1782 struct mii_data *mii; 1783 int error = 0; 1784 1785 switch (command) { 1786 case SIOCSIFFLAGS: 1787 BFE_LOCK(sc); 1788 if (ifp->if_flags & IFF_UP) { 1789 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1790 bfe_set_rx_mode(sc); 1791 else if ((sc->bfe_flags & BFE_FLAG_DETACH) == 0) 1792 bfe_init_locked(sc); 1793 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1794 bfe_stop(sc); 1795 BFE_UNLOCK(sc); 1796 break; 1797 case SIOCADDMULTI: 1798 case SIOCDELMULTI: 1799 BFE_LOCK(sc); 1800 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1801 bfe_set_rx_mode(sc); 1802 BFE_UNLOCK(sc); 1803 break; 1804 case SIOCGIFMEDIA: 1805 case SIOCSIFMEDIA: 1806 mii = device_get_softc(sc->bfe_miibus); 1807 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 1808 break; 1809 default: 1810 error = ether_ioctl(ifp, command, data); 1811 break; 1812 } 1813 1814 return (error); 1815 } 1816 1817 static void 1818 bfe_watchdog(struct bfe_softc *sc) 1819 { 1820 struct ifnet *ifp; 1821 1822 BFE_LOCK_ASSERT(sc); 1823 1824 if (sc->bfe_watchdog_timer == 0 || --sc->bfe_watchdog_timer) 1825 return; 1826 1827 ifp = sc->bfe_ifp; 1828 1829 device_printf(sc->bfe_dev, "watchdog timeout -- resetting\n"); 1830 1831 ifp->if_oerrors++; 1832 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1833 bfe_init_locked(sc); 1834 1835 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1836 bfe_start_locked(ifp); 1837 } 1838 1839 static void 1840 bfe_tick(void *xsc) 1841 { 1842 struct bfe_softc *sc = xsc; 1843 struct mii_data *mii; 1844 1845 BFE_LOCK_ASSERT(sc); 1846 1847 mii = device_get_softc(sc->bfe_miibus); 1848 mii_tick(mii); 1849 bfe_stats_update(sc); 1850 bfe_watchdog(sc); 1851 callout_reset(&sc->bfe_stat_co, hz, bfe_tick, sc); 1852 } 1853 1854 /* 1855 * Stop the adapter and free any mbufs allocated to the 1856 * RX and TX lists. 1857 */ 1858 static void 1859 bfe_stop(struct bfe_softc *sc) 1860 { 1861 struct ifnet *ifp; 1862 1863 BFE_LOCK_ASSERT(sc); 1864 1865 ifp = sc->bfe_ifp; 1866 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 1867 sc->bfe_flags &= ~BFE_FLAG_LINK; 1868 callout_stop(&sc->bfe_stat_co); 1869 sc->bfe_watchdog_timer = 0; 1870 1871 bfe_chip_halt(sc); 1872 bfe_tx_ring_free(sc); 1873 bfe_rx_ring_free(sc); 1874 } 1875 1876 static int 1877 sysctl_bfe_stats(SYSCTL_HANDLER_ARGS) 1878 { 1879 struct bfe_softc *sc; 1880 struct bfe_hw_stats *stats; 1881 int error, result; 1882 1883 result = -1; 1884 error = sysctl_handle_int(oidp, &result, 0, req); 1885 1886 if (error != 0 || req->newptr == NULL) 1887 return (error); 1888 1889 if (result != 1) 1890 return (error); 1891 1892 sc = (struct bfe_softc *)arg1; 1893 stats = &sc->bfe_stats; 1894 1895 printf("%s statistics:\n", device_get_nameunit(sc->bfe_dev)); 1896 printf("Transmit good octets : %ju\n", 1897 (uintmax_t)stats->tx_good_octets); 1898 printf("Transmit good frames : %ju\n", 1899 (uintmax_t)stats->tx_good_frames); 1900 printf("Transmit octets : %ju\n", 1901 (uintmax_t)stats->tx_octets); 1902 printf("Transmit frames : %ju\n", 1903 (uintmax_t)stats->tx_frames); 1904 printf("Transmit broadcast frames : %ju\n", 1905 (uintmax_t)stats->tx_bcast_frames); 1906 printf("Transmit multicast frames : %ju\n", 1907 (uintmax_t)stats->tx_mcast_frames); 1908 printf("Transmit frames 64 bytes : %ju\n", 1909 (uint64_t)stats->tx_pkts_64); 1910 printf("Transmit frames 65 to 127 bytes : %ju\n", 1911 (uint64_t)stats->tx_pkts_65_127); 1912 printf("Transmit frames 128 to 255 bytes : %ju\n", 1913 (uint64_t)stats->tx_pkts_128_255); 1914 printf("Transmit frames 256 to 511 bytes : %ju\n", 1915 (uint64_t)stats->tx_pkts_256_511); 1916 printf("Transmit frames 512 to 1023 bytes : %ju\n", 1917 (uint64_t)stats->tx_pkts_512_1023); 1918 printf("Transmit frames 1024 to max bytes : %ju\n", 1919 (uint64_t)stats->tx_pkts_1024_max); 1920 printf("Transmit jabber errors : %u\n", stats->tx_jabbers); 1921 printf("Transmit oversized frames : %ju\n", 1922 (uint64_t)stats->tx_oversize_frames); 1923 printf("Transmit fragmented frames : %ju\n", 1924 (uint64_t)stats->tx_frag_frames); 1925 printf("Transmit underruns : %u\n", stats->tx_colls); 1926 printf("Transmit total collisions : %u\n", stats->tx_single_colls); 1927 printf("Transmit single collisions : %u\n", stats->tx_single_colls); 1928 printf("Transmit multiple collisions : %u\n", stats->tx_multi_colls); 1929 printf("Transmit excess collisions : %u\n", stats->tx_excess_colls); 1930 printf("Transmit late collisions : %u\n", stats->tx_late_colls); 1931 printf("Transmit deferrals : %u\n", stats->tx_deferrals); 1932 printf("Transmit carrier losts : %u\n", stats->tx_carrier_losts); 1933 printf("Transmit pause frames : %u\n", stats->tx_pause_frames); 1934 1935 printf("Receive good octets : %ju\n", 1936 (uintmax_t)stats->rx_good_octets); 1937 printf("Receive good frames : %ju\n", 1938 (uintmax_t)stats->rx_good_frames); 1939 printf("Receive octets : %ju\n", 1940 (uintmax_t)stats->rx_octets); 1941 printf("Receive frames : %ju\n", 1942 (uintmax_t)stats->rx_frames); 1943 printf("Receive broadcast frames : %ju\n", 1944 (uintmax_t)stats->rx_bcast_frames); 1945 printf("Receive multicast frames : %ju\n", 1946 (uintmax_t)stats->rx_mcast_frames); 1947 printf("Receive frames 64 bytes : %ju\n", 1948 (uint64_t)stats->rx_pkts_64); 1949 printf("Receive frames 65 to 127 bytes : %ju\n", 1950 (uint64_t)stats->rx_pkts_65_127); 1951 printf("Receive frames 128 to 255 bytes : %ju\n", 1952 (uint64_t)stats->rx_pkts_128_255); 1953 printf("Receive frames 256 to 511 bytes : %ju\n", 1954 (uint64_t)stats->rx_pkts_256_511); 1955 printf("Receive frames 512 to 1023 bytes : %ju\n", 1956 (uint64_t)stats->rx_pkts_512_1023); 1957 printf("Receive frames 1024 to max bytes : %ju\n", 1958 (uint64_t)stats->rx_pkts_1024_max); 1959 printf("Receive jabber errors : %u\n", stats->rx_jabbers); 1960 printf("Receive oversized frames : %ju\n", 1961 (uint64_t)stats->rx_oversize_frames); 1962 printf("Receive fragmented frames : %ju\n", 1963 (uint64_t)stats->rx_frag_frames); 1964 printf("Receive missed frames : %u\n", stats->rx_missed_frames); 1965 printf("Receive CRC align errors : %u\n", stats->rx_crc_align_errs); 1966 printf("Receive undersized frames : %u\n", stats->rx_runts); 1967 printf("Receive CRC errors : %u\n", stats->rx_crc_errs); 1968 printf("Receive align errors : %u\n", stats->rx_align_errs); 1969 printf("Receive symbol errors : %u\n", stats->rx_symbol_errs); 1970 printf("Receive pause frames : %u\n", stats->rx_pause_frames); 1971 printf("Receive control frames : %u\n", stats->rx_control_frames); 1972 1973 return (error); 1974 } 1975