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sys/dev/bfe/if_bfe.c
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2003 Stuart Walsh<stu@ipng.org.uk> 5 * and Duncan Barclay<dmlb@dmlb.org> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS 'AS IS' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD: releng/12.0/sys/dev/bfe/if_bfe.c 338948 2018-09-26 17:12:14Z imp $"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/bus.h> 36 #include <sys/endian.h> 37 #include <sys/kernel.h> 38 #include <sys/malloc.h> 39 #include <sys/mbuf.h> 40 #include <sys/module.h> 41 #include <sys/rman.h> 42 #include <sys/socket.h> 43 #include <sys/sockio.h> 44 #include <sys/sysctl.h> 45 46 #include <net/bpf.h> 47 #include <net/if.h> 48 #include <net/if_var.h> 49 #include <net/ethernet.h> 50 #include <net/if_dl.h> 51 #include <net/if_media.h> 52 #include <net/if_types.h> 53 #include <net/if_vlan_var.h> 54 55 #include <dev/mii/mii.h> 56 #include <dev/mii/miivar.h> 57 58 #include <dev/pci/pcireg.h> 59 #include <dev/pci/pcivar.h> 60 61 #include <machine/bus.h> 62 63 #include <dev/bfe/if_bfereg.h> 64 65 MODULE_DEPEND(bfe, pci, 1, 1, 1); 66 MODULE_DEPEND(bfe, ether, 1, 1, 1); 67 MODULE_DEPEND(bfe, miibus, 1, 1, 1); 68 69 /* "device miibus" required. See GENERIC if you get errors here. */ 70 #include "miibus_if.h" 71 72 #define BFE_DEVDESC_MAX 64 /* Maximum device description length */ 73 74 static struct bfe_type bfe_devs[] = { 75 { BCOM_VENDORID, BCOM_DEVICEID_BCM4401, 76 "Broadcom BCM4401 Fast Ethernet" }, 77 { BCOM_VENDORID, BCOM_DEVICEID_BCM4401B0, 78 "Broadcom BCM4401-B0 Fast Ethernet" }, 79 { 0, 0, NULL } 80 }; 81 82 static int bfe_probe (device_t); 83 static int bfe_attach (device_t); 84 static int bfe_detach (device_t); 85 static int bfe_suspend (device_t); 86 static int bfe_resume (device_t); 87 static void bfe_release_resources (struct bfe_softc *); 88 static void bfe_intr (void *); 89 static int bfe_encap (struct bfe_softc *, struct mbuf **); 90 static void bfe_start (struct ifnet *); 91 static void bfe_start_locked (struct ifnet *); 92 static int bfe_ioctl (struct ifnet *, u_long, caddr_t); 93 static void bfe_init (void *); 94 static void bfe_init_locked (void *); 95 static void bfe_stop (struct bfe_softc *); 96 static void bfe_watchdog (struct bfe_softc *); 97 static int bfe_shutdown (device_t); 98 static void bfe_tick (void *); 99 static void bfe_txeof (struct bfe_softc *); 100 static void bfe_rxeof (struct bfe_softc *); 101 static void bfe_set_rx_mode (struct bfe_softc *); 102 static int bfe_list_rx_init (struct bfe_softc *); 103 static void bfe_list_tx_init (struct bfe_softc *); 104 static void bfe_discard_buf (struct bfe_softc *, int); 105 static int bfe_list_newbuf (struct bfe_softc *, int); 106 static void bfe_rx_ring_free (struct bfe_softc *); 107 108 static void bfe_pci_setup (struct bfe_softc *, u_int32_t); 109 static int bfe_ifmedia_upd (struct ifnet *); 110 static void bfe_ifmedia_sts (struct ifnet *, struct ifmediareq *); 111 static int bfe_miibus_readreg (device_t, int, int); 112 static int bfe_miibus_writereg (device_t, int, int, int); 113 static void bfe_miibus_statchg (device_t); 114 static int bfe_wait_bit (struct bfe_softc *, u_int32_t, u_int32_t, 115 u_long, const int); 116 static void bfe_get_config (struct bfe_softc *sc); 117 static void bfe_read_eeprom (struct bfe_softc *, u_int8_t *); 118 static void bfe_stats_update (struct bfe_softc *); 119 static void bfe_clear_stats (struct bfe_softc *); 120 static int bfe_readphy (struct bfe_softc *, u_int32_t, u_int32_t*); 121 static int bfe_writephy (struct bfe_softc *, u_int32_t, u_int32_t); 122 static int bfe_resetphy (struct bfe_softc *); 123 static int bfe_setupphy (struct bfe_softc *); 124 static void bfe_chip_reset (struct bfe_softc *); 125 static void bfe_chip_halt (struct bfe_softc *); 126 static void bfe_core_reset (struct bfe_softc *); 127 static void bfe_core_disable (struct bfe_softc *); 128 static int bfe_dma_alloc (struct bfe_softc *); 129 static void bfe_dma_free (struct bfe_softc *sc); 130 static void bfe_dma_map (void *, bus_dma_segment_t *, int, int); 131 static void bfe_cam_write (struct bfe_softc *, u_char *, int); 132 static int sysctl_bfe_stats (SYSCTL_HANDLER_ARGS); 133 134 static device_method_t bfe_methods[] = { 135 /* Device interface */ 136 DEVMETHOD(device_probe, bfe_probe), 137 DEVMETHOD(device_attach, bfe_attach), 138 DEVMETHOD(device_detach, bfe_detach), 139 DEVMETHOD(device_shutdown, bfe_shutdown), 140 DEVMETHOD(device_suspend, bfe_suspend), 141 DEVMETHOD(device_resume, bfe_resume), 142 143 /* MII interface */ 144 DEVMETHOD(miibus_readreg, bfe_miibus_readreg), 145 DEVMETHOD(miibus_writereg, bfe_miibus_writereg), 146 DEVMETHOD(miibus_statchg, bfe_miibus_statchg), 147 148 DEVMETHOD_END 149 }; 150 151 static driver_t bfe_driver = { 152 "bfe", 153 bfe_methods, 154 sizeof(struct bfe_softc) 155 }; 156 157 static devclass_t bfe_devclass; 158 159 DRIVER_MODULE(bfe, pci, bfe_driver, bfe_devclass, 0, 0); 160 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, bfe, bfe_devs, 161 nitems(bfe_devs) - 1); 162 DRIVER_MODULE(miibus, bfe, miibus_driver, miibus_devclass, 0, 0); 163 164 /* 165 * Probe for a Broadcom 4401 chip. 166 */ 167 static int 168 bfe_probe(device_t dev) 169 { 170 struct bfe_type *t; 171 172 t = bfe_devs; 173 174 while (t->bfe_name != NULL) { 175 if (pci_get_vendor(dev) == t->bfe_vid && 176 pci_get_device(dev) == t->bfe_did) { 177 device_set_desc(dev, t->bfe_name); 178 return (BUS_PROBE_DEFAULT); 179 } 180 t++; 181 } 182 183 return (ENXIO); 184 } 185 186 struct bfe_dmamap_arg { 187 bus_addr_t bfe_busaddr; 188 }; 189 190 static int 191 bfe_dma_alloc(struct bfe_softc *sc) 192 { 193 struct bfe_dmamap_arg ctx; 194 struct bfe_rx_data *rd; 195 struct bfe_tx_data *td; 196 int error, i; 197 198 /* 199 * parent tag. Apparently the chip cannot handle any DMA address 200 * greater than 1GB. 201 */ 202 error = bus_dma_tag_create(bus_get_dma_tag(sc->bfe_dev), /* parent */ 203 1, 0, /* alignment, boundary */ 204 BFE_DMA_MAXADDR, /* lowaddr */ 205 BUS_SPACE_MAXADDR, /* highaddr */ 206 NULL, NULL, /* filter, filterarg */ 207 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 208 0, /* nsegments */ 209 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 210 0, /* flags */ 211 NULL, NULL, /* lockfunc, lockarg */ 212 &sc->bfe_parent_tag); 213 if (error != 0) { 214 device_printf(sc->bfe_dev, "cannot create parent DMA tag.\n"); 215 goto fail; 216 } 217 218 /* Create tag for Tx ring. */ 219 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */ 220 BFE_TX_RING_ALIGN, 0, /* alignment, boundary */ 221 BUS_SPACE_MAXADDR, /* lowaddr */ 222 BUS_SPACE_MAXADDR, /* highaddr */ 223 NULL, NULL, /* filter, filterarg */ 224 BFE_TX_LIST_SIZE, /* maxsize */ 225 1, /* nsegments */ 226 BFE_TX_LIST_SIZE, /* maxsegsize */ 227 0, /* flags */ 228 NULL, NULL, /* lockfunc, lockarg */ 229 &sc->bfe_tx_tag); 230 if (error != 0) { 231 device_printf(sc->bfe_dev, "cannot create Tx ring DMA tag.\n"); 232 goto fail; 233 } 234 235 /* Create tag for Rx ring. */ 236 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */ 237 BFE_RX_RING_ALIGN, 0, /* alignment, boundary */ 238 BUS_SPACE_MAXADDR, /* lowaddr */ 239 BUS_SPACE_MAXADDR, /* highaddr */ 240 NULL, NULL, /* filter, filterarg */ 241 BFE_RX_LIST_SIZE, /* maxsize */ 242 1, /* nsegments */ 243 BFE_RX_LIST_SIZE, /* maxsegsize */ 244 0, /* flags */ 245 NULL, NULL, /* lockfunc, lockarg */ 246 &sc->bfe_rx_tag); 247 if (error != 0) { 248 device_printf(sc->bfe_dev, "cannot create Rx ring DMA tag.\n"); 249 goto fail; 250 } 251 252 /* Create tag for Tx buffers. */ 253 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */ 254 1, 0, /* alignment, boundary */ 255 BUS_SPACE_MAXADDR, /* lowaddr */ 256 BUS_SPACE_MAXADDR, /* highaddr */ 257 NULL, NULL, /* filter, filterarg */ 258 MCLBYTES * BFE_MAXTXSEGS, /* maxsize */ 259 BFE_MAXTXSEGS, /* nsegments */ 260 MCLBYTES, /* maxsegsize */ 261 0, /* flags */ 262 NULL, NULL, /* lockfunc, lockarg */ 263 &sc->bfe_txmbuf_tag); 264 if (error != 0) { 265 device_printf(sc->bfe_dev, 266 "cannot create Tx buffer DMA tag.\n"); 267 goto fail; 268 } 269 270 /* Create tag for Rx buffers. */ 271 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */ 272 1, 0, /* alignment, boundary */ 273 BUS_SPACE_MAXADDR, /* lowaddr */ 274 BUS_SPACE_MAXADDR, /* highaddr */ 275 NULL, NULL, /* filter, filterarg */ 276 MCLBYTES, /* maxsize */ 277 1, /* nsegments */ 278 MCLBYTES, /* maxsegsize */ 279 0, /* flags */ 280 NULL, NULL, /* lockfunc, lockarg */ 281 &sc->bfe_rxmbuf_tag); 282 if (error != 0) { 283 device_printf(sc->bfe_dev, 284 "cannot create Rx buffer DMA tag.\n"); 285 goto fail; 286 } 287 288 /* Allocate DMA'able memory and load DMA map. */ 289 error = bus_dmamem_alloc(sc->bfe_tx_tag, (void *)&sc->bfe_tx_list, 290 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, &sc->bfe_tx_map); 291 if (error != 0) { 292 device_printf(sc->bfe_dev, 293 "cannot allocate DMA'able memory for Tx ring.\n"); 294 goto fail; 295 } 296 ctx.bfe_busaddr = 0; 297 error = bus_dmamap_load(sc->bfe_tx_tag, sc->bfe_tx_map, 298 sc->bfe_tx_list, BFE_TX_LIST_SIZE, bfe_dma_map, &ctx, 299 BUS_DMA_NOWAIT); 300 if (error != 0 || ctx.bfe_busaddr == 0) { 301 device_printf(sc->bfe_dev, 302 "cannot load DMA'able memory for Tx ring.\n"); 303 goto fail; 304 } 305 sc->bfe_tx_dma = BFE_ADDR_LO(ctx.bfe_busaddr); 306 307 error = bus_dmamem_alloc(sc->bfe_rx_tag, (void *)&sc->bfe_rx_list, 308 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, &sc->bfe_rx_map); 309 if (error != 0) { 310 device_printf(sc->bfe_dev, 311 "cannot allocate DMA'able memory for Rx ring.\n"); 312 goto fail; 313 } 314 ctx.bfe_busaddr = 0; 315 error = bus_dmamap_load(sc->bfe_rx_tag, sc->bfe_rx_map, 316 sc->bfe_rx_list, BFE_RX_LIST_SIZE, bfe_dma_map, &ctx, 317 BUS_DMA_NOWAIT); 318 if (error != 0 || ctx.bfe_busaddr == 0) { 319 device_printf(sc->bfe_dev, 320 "cannot load DMA'able memory for Rx ring.\n"); 321 goto fail; 322 } 323 sc->bfe_rx_dma = BFE_ADDR_LO(ctx.bfe_busaddr); 324 325 /* Create DMA maps for Tx buffers. */ 326 for (i = 0; i < BFE_TX_LIST_CNT; i++) { 327 td = &sc->bfe_tx_ring[i]; 328 td->bfe_mbuf = NULL; 329 td->bfe_map = NULL; 330 error = bus_dmamap_create(sc->bfe_txmbuf_tag, 0, &td->bfe_map); 331 if (error != 0) { 332 device_printf(sc->bfe_dev, 333 "cannot create DMA map for Tx.\n"); 334 goto fail; 335 } 336 } 337 338 /* Create spare DMA map for Rx buffers. */ 339 error = bus_dmamap_create(sc->bfe_rxmbuf_tag, 0, &sc->bfe_rx_sparemap); 340 if (error != 0) { 341 device_printf(sc->bfe_dev, "cannot create spare DMA map for Rx.\n"); 342 goto fail; 343 } 344 /* Create DMA maps for Rx buffers. */ 345 for (i = 0; i < BFE_RX_LIST_CNT; i++) { 346 rd = &sc->bfe_rx_ring[i]; 347 rd->bfe_mbuf = NULL; 348 rd->bfe_map = NULL; 349 rd->bfe_ctrl = 0; 350 error = bus_dmamap_create(sc->bfe_rxmbuf_tag, 0, &rd->bfe_map); 351 if (error != 0) { 352 device_printf(sc->bfe_dev, 353 "cannot create DMA map for Rx.\n"); 354 goto fail; 355 } 356 } 357 358 fail: 359 return (error); 360 } 361 362 static void 363 bfe_dma_free(struct bfe_softc *sc) 364 { 365 struct bfe_tx_data *td; 366 struct bfe_rx_data *rd; 367 int i; 368 369 /* Tx ring. */ 370 if (sc->bfe_tx_tag != NULL) { 371 if (sc->bfe_tx_dma != 0) 372 bus_dmamap_unload(sc->bfe_tx_tag, sc->bfe_tx_map); 373 if (sc->bfe_tx_list != NULL) 374 bus_dmamem_free(sc->bfe_tx_tag, sc->bfe_tx_list, 375 sc->bfe_tx_map); 376 sc->bfe_tx_dma = 0; 377 sc->bfe_tx_list = NULL; 378 bus_dma_tag_destroy(sc->bfe_tx_tag); 379 sc->bfe_tx_tag = NULL; 380 } 381 382 /* Rx ring. */ 383 if (sc->bfe_rx_tag != NULL) { 384 if (sc->bfe_rx_dma != 0) 385 bus_dmamap_unload(sc->bfe_rx_tag, sc->bfe_rx_map); 386 if (sc->bfe_rx_list != NULL) 387 bus_dmamem_free(sc->bfe_rx_tag, sc->bfe_rx_list, 388 sc->bfe_rx_map); 389 sc->bfe_rx_dma = 0; 390 sc->bfe_rx_list = NULL; 391 bus_dma_tag_destroy(sc->bfe_rx_tag); 392 sc->bfe_rx_tag = NULL; 393 } 394 395 /* Tx buffers. */ 396 if (sc->bfe_txmbuf_tag != NULL) { 397 for (i = 0; i < BFE_TX_LIST_CNT; i++) { 398 td = &sc->bfe_tx_ring[i]; 399 if (td->bfe_map != NULL) { 400 bus_dmamap_destroy(sc->bfe_txmbuf_tag, 401 td->bfe_map); 402 td->bfe_map = NULL; 403 } 404 } 405 bus_dma_tag_destroy(sc->bfe_txmbuf_tag); 406 sc->bfe_txmbuf_tag = NULL; 407 } 408 409 /* Rx buffers. */ 410 if (sc->bfe_rxmbuf_tag != NULL) { 411 for (i = 0; i < BFE_RX_LIST_CNT; i++) { 412 rd = &sc->bfe_rx_ring[i]; 413 if (rd->bfe_map != NULL) { 414 bus_dmamap_destroy(sc->bfe_rxmbuf_tag, 415 rd->bfe_map); 416 rd->bfe_map = NULL; 417 } 418 } 419 if (sc->bfe_rx_sparemap != NULL) { 420 bus_dmamap_destroy(sc->bfe_rxmbuf_tag, 421 sc->bfe_rx_sparemap); 422 sc->bfe_rx_sparemap = NULL; 423 } 424 bus_dma_tag_destroy(sc->bfe_rxmbuf_tag); 425 sc->bfe_rxmbuf_tag = NULL; 426 } 427 428 if (sc->bfe_parent_tag != NULL) { 429 bus_dma_tag_destroy(sc->bfe_parent_tag); 430 sc->bfe_parent_tag = NULL; 431 } 432 } 433 434 static int 435 bfe_attach(device_t dev) 436 { 437 struct ifnet *ifp = NULL; 438 struct bfe_softc *sc; 439 int error = 0, rid; 440 441 sc = device_get_softc(dev); 442 mtx_init(&sc->bfe_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 443 MTX_DEF); 444 callout_init_mtx(&sc->bfe_stat_co, &sc->bfe_mtx, 0); 445 446 sc->bfe_dev = dev; 447 448 /* 449 * Map control/status registers. 450 */ 451 pci_enable_busmaster(dev); 452 453 rid = PCIR_BAR(0); 454 sc->bfe_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 455 RF_ACTIVE); 456 if (sc->bfe_res == NULL) { 457 device_printf(dev, "couldn't map memory\n"); 458 error = ENXIO; 459 goto fail; 460 } 461 462 /* Allocate interrupt */ 463 rid = 0; 464 465 sc->bfe_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 466 RF_SHAREABLE | RF_ACTIVE); 467 if (sc->bfe_irq == NULL) { 468 device_printf(dev, "couldn't map interrupt\n"); 469 error = ENXIO; 470 goto fail; 471 } 472 473 if (bfe_dma_alloc(sc) != 0) { 474 device_printf(dev, "failed to allocate DMA resources\n"); 475 error = ENXIO; 476 goto fail; 477 } 478 479 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 480 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 481 "stats", CTLTYPE_INT | CTLFLAG_RW, sc, 0, sysctl_bfe_stats, 482 "I", "Statistics"); 483 484 /* Set up ifnet structure */ 485 ifp = sc->bfe_ifp = if_alloc(IFT_ETHER); 486 if (ifp == NULL) { 487 device_printf(dev, "failed to if_alloc()\n"); 488 error = ENOSPC; 489 goto fail; 490 } 491 ifp->if_softc = sc; 492 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 493 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 494 ifp->if_ioctl = bfe_ioctl; 495 ifp->if_start = bfe_start; 496 ifp->if_init = bfe_init; 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 error = mii_attach(dev, &sc->bfe_miibus, ifp, bfe_ifmedia_upd, 509 bfe_ifmedia_sts, BMSR_DEFCAPMASK, sc->bfe_phyaddr, MII_OFFSET_ANY, 510 0); 511 if (error != 0) { 512 device_printf(dev, "attaching PHYs failed\n"); 513 goto fail; 514 } 515 516 ether_ifattach(ifp, sc->bfe_enaddr); 517 518 /* 519 * Tell the upper layer(s) we support long frames. 520 */ 521 ifp->if_hdrlen = sizeof(struct ether_vlan_header); 522 ifp->if_capabilities |= IFCAP_VLAN_MTU; 523 ifp->if_capenable |= IFCAP_VLAN_MTU; 524 525 /* 526 * Hook interrupt last to avoid having to lock softc 527 */ 528 error = bus_setup_intr(dev, sc->bfe_irq, INTR_TYPE_NET | INTR_MPSAFE, 529 NULL, bfe_intr, sc, &sc->bfe_intrhand); 530 531 if (error) { 532 device_printf(dev, "couldn't set up irq\n"); 533 goto fail; 534 } 535 fail: 536 if (error != 0) 537 bfe_detach(dev); 538 return (error); 539 } 540 541 static int 542 bfe_detach(device_t dev) 543 { 544 struct bfe_softc *sc; 545 struct ifnet *ifp; 546 547 sc = device_get_softc(dev); 548 549 ifp = sc->bfe_ifp; 550 551 if (device_is_attached(dev)) { 552 BFE_LOCK(sc); 553 sc->bfe_flags |= BFE_FLAG_DETACH; 554 bfe_stop(sc); 555 BFE_UNLOCK(sc); 556 callout_drain(&sc->bfe_stat_co); 557 if (ifp != NULL) 558 ether_ifdetach(ifp); 559 } 560 561 BFE_LOCK(sc); 562 bfe_chip_reset(sc); 563 BFE_UNLOCK(sc); 564 565 bus_generic_detach(dev); 566 if (sc->bfe_miibus != NULL) 567 device_delete_child(dev, sc->bfe_miibus); 568 569 bfe_release_resources(sc); 570 bfe_dma_free(sc); 571 mtx_destroy(&sc->bfe_mtx); 572 573 return (0); 574 } 575 576 /* 577 * Stop all chip I/O so that the kernel's probe routines don't 578 * get confused by errant DMAs when rebooting. 579 */ 580 static int 581 bfe_shutdown(device_t dev) 582 { 583 struct bfe_softc *sc; 584 585 sc = device_get_softc(dev); 586 BFE_LOCK(sc); 587 bfe_stop(sc); 588 589 BFE_UNLOCK(sc); 590 591 return (0); 592 } 593 594 static int 595 bfe_suspend(device_t dev) 596 { 597 struct bfe_softc *sc; 598 599 sc = device_get_softc(dev); 600 BFE_LOCK(sc); 601 bfe_stop(sc); 602 BFE_UNLOCK(sc); 603 604 return (0); 605 } 606 607 static int 608 bfe_resume(device_t dev) 609 { 610 struct bfe_softc *sc; 611 struct ifnet *ifp; 612 613 sc = device_get_softc(dev); 614 ifp = sc->bfe_ifp; 615 BFE_LOCK(sc); 616 bfe_chip_reset(sc); 617 if (ifp->if_flags & IFF_UP) { 618 bfe_init_locked(sc); 619 if (ifp->if_drv_flags & IFF_DRV_RUNNING && 620 !IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 621 bfe_start_locked(ifp); 622 } 623 BFE_UNLOCK(sc); 624 625 return (0); 626 } 627 628 static int 629 bfe_miibus_readreg(device_t dev, int phy, int reg) 630 { 631 struct bfe_softc *sc; 632 u_int32_t ret; 633 634 sc = device_get_softc(dev); 635 bfe_readphy(sc, reg, &ret); 636 637 return (ret); 638 } 639 640 static int 641 bfe_miibus_writereg(device_t dev, int phy, int reg, int val) 642 { 643 struct bfe_softc *sc; 644 645 sc = device_get_softc(dev); 646 bfe_writephy(sc, reg, val); 647 648 return (0); 649 } 650 651 static void 652 bfe_miibus_statchg(device_t dev) 653 { 654 struct bfe_softc *sc; 655 struct mii_data *mii; 656 u_int32_t val, flow; 657 658 sc = device_get_softc(dev); 659 mii = device_get_softc(sc->bfe_miibus); 660 661 sc->bfe_flags &= ~BFE_FLAG_LINK; 662 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == 663 (IFM_ACTIVE | IFM_AVALID)) { 664 switch (IFM_SUBTYPE(mii->mii_media_active)) { 665 case IFM_10_T: 666 case IFM_100_TX: 667 sc->bfe_flags |= BFE_FLAG_LINK; 668 break; 669 default: 670 break; 671 } 672 } 673 674 /* XXX Should stop Rx/Tx engine prior to touching MAC. */ 675 val = CSR_READ_4(sc, BFE_TX_CTRL); 676 val &= ~BFE_TX_DUPLEX; 677 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 678 val |= BFE_TX_DUPLEX; 679 flow = 0; 680 #ifdef notyet 681 flow = CSR_READ_4(sc, BFE_RXCONF); 682 flow &= ~BFE_RXCONF_FLOW; 683 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) & 684 IFM_ETH_RXPAUSE) != 0) 685 flow |= BFE_RXCONF_FLOW; 686 CSR_WRITE_4(sc, BFE_RXCONF, flow); 687 /* 688 * It seems that the hardware has Tx pause issues 689 * so enable only Rx pause. 690 */ 691 flow = CSR_READ_4(sc, BFE_MAC_FLOW); 692 flow &= ~BFE_FLOW_PAUSE_ENAB; 693 CSR_WRITE_4(sc, BFE_MAC_FLOW, flow); 694 #endif 695 } 696 CSR_WRITE_4(sc, BFE_TX_CTRL, val); 697 } 698 699 static void 700 bfe_tx_ring_free(struct bfe_softc *sc) 701 { 702 int i; 703 704 for(i = 0; i < BFE_TX_LIST_CNT; i++) { 705 if (sc->bfe_tx_ring[i].bfe_mbuf != NULL) { 706 bus_dmamap_sync(sc->bfe_txmbuf_tag, 707 sc->bfe_tx_ring[i].bfe_map, BUS_DMASYNC_POSTWRITE); 708 bus_dmamap_unload(sc->bfe_txmbuf_tag, 709 sc->bfe_tx_ring[i].bfe_map); 710 m_freem(sc->bfe_tx_ring[i].bfe_mbuf); 711 sc->bfe_tx_ring[i].bfe_mbuf = NULL; 712 } 713 } 714 bzero(sc->bfe_tx_list, BFE_TX_LIST_SIZE); 715 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, 716 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 717 } 718 719 static void 720 bfe_rx_ring_free(struct bfe_softc *sc) 721 { 722 int i; 723 724 for (i = 0; i < BFE_RX_LIST_CNT; i++) { 725 if (sc->bfe_rx_ring[i].bfe_mbuf != NULL) { 726 bus_dmamap_sync(sc->bfe_rxmbuf_tag, 727 sc->bfe_rx_ring[i].bfe_map, BUS_DMASYNC_POSTREAD); 728 bus_dmamap_unload(sc->bfe_rxmbuf_tag, 729 sc->bfe_rx_ring[i].bfe_map); 730 m_freem(sc->bfe_rx_ring[i].bfe_mbuf); 731 sc->bfe_rx_ring[i].bfe_mbuf = NULL; 732 } 733 } 734 bzero(sc->bfe_rx_list, BFE_RX_LIST_SIZE); 735 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, 736 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 737 } 738 739 static int 740 bfe_list_rx_init(struct bfe_softc *sc) 741 { 742 struct bfe_rx_data *rd; 743 int i; 744 745 sc->bfe_rx_prod = sc->bfe_rx_cons = 0; 746 bzero(sc->bfe_rx_list, BFE_RX_LIST_SIZE); 747 for (i = 0; i < BFE_RX_LIST_CNT; i++) { 748 rd = &sc->bfe_rx_ring[i]; 749 rd->bfe_mbuf = NULL; 750 rd->bfe_ctrl = 0; 751 if (bfe_list_newbuf(sc, i) != 0) 752 return (ENOBUFS); 753 } 754 755 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, 756 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 757 CSR_WRITE_4(sc, BFE_DMARX_PTR, (i * sizeof(struct bfe_desc))); 758 759 return (0); 760 } 761 762 static void 763 bfe_list_tx_init(struct bfe_softc *sc) 764 { 765 int i; 766 767 sc->bfe_tx_cnt = sc->bfe_tx_prod = sc->bfe_tx_cons = 0; 768 bzero(sc->bfe_tx_list, BFE_TX_LIST_SIZE); 769 for (i = 0; i < BFE_TX_LIST_CNT; i++) 770 sc->bfe_tx_ring[i].bfe_mbuf = NULL; 771 772 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, 773 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 774 } 775 776 static void 777 bfe_discard_buf(struct bfe_softc *sc, int c) 778 { 779 struct bfe_rx_data *r; 780 struct bfe_desc *d; 781 782 r = &sc->bfe_rx_ring[c]; 783 d = &sc->bfe_rx_list[c]; 784 d->bfe_ctrl = htole32(r->bfe_ctrl); 785 } 786 787 static int 788 bfe_list_newbuf(struct bfe_softc *sc, int c) 789 { 790 struct bfe_rxheader *rx_header; 791 struct bfe_desc *d; 792 struct bfe_rx_data *r; 793 struct mbuf *m; 794 bus_dma_segment_t segs[1]; 795 bus_dmamap_t map; 796 u_int32_t ctrl; 797 int nsegs; 798 799 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 800 if (m == NULL) 801 return (ENOBUFS); 802 m->m_len = m->m_pkthdr.len = MCLBYTES; 803 804 if (bus_dmamap_load_mbuf_sg(sc->bfe_rxmbuf_tag, sc->bfe_rx_sparemap, 805 m, segs, &nsegs, 0) != 0) { 806 m_freem(m); 807 return (ENOBUFS); 808 } 809 810 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); 811 r = &sc->bfe_rx_ring[c]; 812 if (r->bfe_mbuf != NULL) { 813 bus_dmamap_sync(sc->bfe_rxmbuf_tag, r->bfe_map, 814 BUS_DMASYNC_POSTREAD); 815 bus_dmamap_unload(sc->bfe_rxmbuf_tag, r->bfe_map); 816 } 817 map = r->bfe_map; 818 r->bfe_map = sc->bfe_rx_sparemap; 819 sc->bfe_rx_sparemap = map; 820 r->bfe_mbuf = m; 821 822 rx_header = mtod(m, struct bfe_rxheader *); 823 rx_header->len = 0; 824 rx_header->flags = 0; 825 bus_dmamap_sync(sc->bfe_rxmbuf_tag, r->bfe_map, BUS_DMASYNC_PREREAD); 826 827 ctrl = segs[0].ds_len & BFE_DESC_LEN; 828 KASSERT(ctrl > ETHER_MAX_LEN + 32, ("%s: buffer size too small(%d)!", 829 __func__, ctrl)); 830 if (c == BFE_RX_LIST_CNT - 1) 831 ctrl |= BFE_DESC_EOT; 832 r->bfe_ctrl = ctrl; 833 834 d = &sc->bfe_rx_list[c]; 835 d->bfe_ctrl = htole32(ctrl); 836 /* The chip needs all addresses to be added to BFE_PCI_DMA. */ 837 d->bfe_addr = htole32(BFE_ADDR_LO(segs[0].ds_addr) + BFE_PCI_DMA); 838 839 return (0); 840 } 841 842 static void 843 bfe_get_config(struct bfe_softc *sc) 844 { 845 u_int8_t eeprom[128]; 846 847 bfe_read_eeprom(sc, eeprom); 848 849 sc->bfe_enaddr[0] = eeprom[79]; 850 sc->bfe_enaddr[1] = eeprom[78]; 851 sc->bfe_enaddr[2] = eeprom[81]; 852 sc->bfe_enaddr[3] = eeprom[80]; 853 sc->bfe_enaddr[4] = eeprom[83]; 854 sc->bfe_enaddr[5] = eeprom[82]; 855 856 sc->bfe_phyaddr = eeprom[90] & 0x1f; 857 sc->bfe_mdc_port = (eeprom[90] >> 14) & 0x1; 858 859 sc->bfe_core_unit = 0; 860 sc->bfe_dma_offset = BFE_PCI_DMA; 861 } 862 863 static void 864 bfe_pci_setup(struct bfe_softc *sc, u_int32_t cores) 865 { 866 u_int32_t bar_orig, pci_rev, val; 867 868 bar_orig = pci_read_config(sc->bfe_dev, BFE_BAR0_WIN, 4); 869 pci_write_config(sc->bfe_dev, BFE_BAR0_WIN, BFE_REG_PCI, 4); 870 pci_rev = CSR_READ_4(sc, BFE_SBIDHIGH) & BFE_RC_MASK; 871 872 val = CSR_READ_4(sc, BFE_SBINTVEC); 873 val |= cores; 874 CSR_WRITE_4(sc, BFE_SBINTVEC, val); 875 876 val = CSR_READ_4(sc, BFE_SSB_PCI_TRANS_2); 877 val |= BFE_SSB_PCI_PREF | BFE_SSB_PCI_BURST; 878 CSR_WRITE_4(sc, BFE_SSB_PCI_TRANS_2, val); 879 880 pci_write_config(sc->bfe_dev, BFE_BAR0_WIN, bar_orig, 4); 881 } 882 883 static void 884 bfe_clear_stats(struct bfe_softc *sc) 885 { 886 uint32_t reg; 887 888 BFE_LOCK_ASSERT(sc); 889 890 CSR_WRITE_4(sc, BFE_MIB_CTRL, BFE_MIB_CLR_ON_READ); 891 for (reg = BFE_TX_GOOD_O; reg <= BFE_TX_PAUSE; reg += 4) 892 CSR_READ_4(sc, reg); 893 for (reg = BFE_RX_GOOD_O; reg <= BFE_RX_NPAUSE; reg += 4) 894 CSR_READ_4(sc, reg); 895 } 896 897 static int 898 bfe_resetphy(struct bfe_softc *sc) 899 { 900 u_int32_t val; 901 902 bfe_writephy(sc, 0, BMCR_RESET); 903 DELAY(100); 904 bfe_readphy(sc, 0, &val); 905 if (val & BMCR_RESET) { 906 device_printf(sc->bfe_dev, "PHY Reset would not complete.\n"); 907 return (ENXIO); 908 } 909 return (0); 910 } 911 912 static void 913 bfe_chip_halt(struct bfe_softc *sc) 914 { 915 BFE_LOCK_ASSERT(sc); 916 /* disable interrupts - not that it actually does..*/ 917 CSR_WRITE_4(sc, BFE_IMASK, 0); 918 CSR_READ_4(sc, BFE_IMASK); 919 920 CSR_WRITE_4(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE); 921 bfe_wait_bit(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE, 200, 1); 922 923 CSR_WRITE_4(sc, BFE_DMARX_CTRL, 0); 924 CSR_WRITE_4(sc, BFE_DMATX_CTRL, 0); 925 DELAY(10); 926 } 927 928 static void 929 bfe_chip_reset(struct bfe_softc *sc) 930 { 931 u_int32_t val; 932 933 BFE_LOCK_ASSERT(sc); 934 935 /* Set the interrupt vector for the enet core */ 936 bfe_pci_setup(sc, BFE_INTVEC_ENET0); 937 938 /* is core up? */ 939 val = CSR_READ_4(sc, BFE_SBTMSLOW) & 940 (BFE_RESET | BFE_REJECT | BFE_CLOCK); 941 if (val == BFE_CLOCK) { 942 /* It is, so shut it down */ 943 CSR_WRITE_4(sc, BFE_RCV_LAZY, 0); 944 CSR_WRITE_4(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE); 945 bfe_wait_bit(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE, 100, 1); 946 CSR_WRITE_4(sc, BFE_DMATX_CTRL, 0); 947 if (CSR_READ_4(sc, BFE_DMARX_STAT) & BFE_STAT_EMASK) 948 bfe_wait_bit(sc, BFE_DMARX_STAT, BFE_STAT_SIDLE, 949 100, 0); 950 CSR_WRITE_4(sc, BFE_DMARX_CTRL, 0); 951 } 952 953 bfe_core_reset(sc); 954 bfe_clear_stats(sc); 955 956 /* 957 * We want the phy registers to be accessible even when 958 * the driver is "downed" so initialize MDC preamble, frequency, 959 * and whether internal or external phy here. 960 */ 961 962 /* 4402 has 62.5Mhz SB clock and internal phy */ 963 CSR_WRITE_4(sc, BFE_MDIO_CTRL, 0x8d); 964 965 /* Internal or external PHY? */ 966 val = CSR_READ_4(sc, BFE_DEVCTRL); 967 if (!(val & BFE_IPP)) 968 CSR_WRITE_4(sc, BFE_ENET_CTRL, BFE_ENET_EPSEL); 969 else if (CSR_READ_4(sc, BFE_DEVCTRL) & BFE_EPR) { 970 BFE_AND(sc, BFE_DEVCTRL, ~BFE_EPR); 971 DELAY(100); 972 } 973 974 /* Enable CRC32 generation and set proper LED modes */ 975 BFE_OR(sc, BFE_MAC_CTRL, BFE_CTRL_CRC32_ENAB | BFE_CTRL_LED); 976 977 /* Reset or clear powerdown control bit */ 978 BFE_AND(sc, BFE_MAC_CTRL, ~BFE_CTRL_PDOWN); 979 980 CSR_WRITE_4(sc, BFE_RCV_LAZY, ((1 << BFE_LAZY_FC_SHIFT) & 981 BFE_LAZY_FC_MASK)); 982 983 /* 984 * We don't want lazy interrupts, so just send them at 985 * the end of a frame, please 986 */ 987 BFE_OR(sc, BFE_RCV_LAZY, 0); 988 989 /* Set max lengths, accounting for VLAN tags */ 990 CSR_WRITE_4(sc, BFE_RXMAXLEN, ETHER_MAX_LEN+32); 991 CSR_WRITE_4(sc, BFE_TXMAXLEN, ETHER_MAX_LEN+32); 992 993 /* Set watermark XXX - magic */ 994 CSR_WRITE_4(sc, BFE_TX_WMARK, 56); 995 996 /* 997 * Initialise DMA channels 998 * - not forgetting dma addresses need to be added to BFE_PCI_DMA 999 */ 1000 CSR_WRITE_4(sc, BFE_DMATX_CTRL, BFE_TX_CTRL_ENABLE); 1001 CSR_WRITE_4(sc, BFE_DMATX_ADDR, sc->bfe_tx_dma + BFE_PCI_DMA); 1002 1003 CSR_WRITE_4(sc, BFE_DMARX_CTRL, (BFE_RX_OFFSET << BFE_RX_CTRL_ROSHIFT) | 1004 BFE_RX_CTRL_ENABLE); 1005 CSR_WRITE_4(sc, BFE_DMARX_ADDR, sc->bfe_rx_dma + BFE_PCI_DMA); 1006 1007 bfe_resetphy(sc); 1008 bfe_setupphy(sc); 1009 } 1010 1011 static void 1012 bfe_core_disable(struct bfe_softc *sc) 1013 { 1014 if ((CSR_READ_4(sc, BFE_SBTMSLOW)) & BFE_RESET) 1015 return; 1016 1017 /* 1018 * Set reject, wait for it set, then wait for the core to stop 1019 * being busy, then set reset and reject and enable the clocks. 1020 */ 1021 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_REJECT | BFE_CLOCK)); 1022 bfe_wait_bit(sc, BFE_SBTMSLOW, BFE_REJECT, 1000, 0); 1023 bfe_wait_bit(sc, BFE_SBTMSHIGH, BFE_BUSY, 1000, 1); 1024 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_FGC | BFE_CLOCK | BFE_REJECT | 1025 BFE_RESET)); 1026 CSR_READ_4(sc, BFE_SBTMSLOW); 1027 DELAY(10); 1028 /* Leave reset and reject set */ 1029 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_REJECT | BFE_RESET)); 1030 DELAY(10); 1031 } 1032 1033 static void 1034 bfe_core_reset(struct bfe_softc *sc) 1035 { 1036 u_int32_t val; 1037 1038 /* Disable the core */ 1039 bfe_core_disable(sc); 1040 1041 /* and bring it back up */ 1042 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_RESET | BFE_CLOCK | BFE_FGC)); 1043 CSR_READ_4(sc, BFE_SBTMSLOW); 1044 DELAY(10); 1045 1046 /* Chip bug, clear SERR, IB and TO if they are set. */ 1047 if (CSR_READ_4(sc, BFE_SBTMSHIGH) & BFE_SERR) 1048 CSR_WRITE_4(sc, BFE_SBTMSHIGH, 0); 1049 val = CSR_READ_4(sc, BFE_SBIMSTATE); 1050 if (val & (BFE_IBE | BFE_TO)) 1051 CSR_WRITE_4(sc, BFE_SBIMSTATE, val & ~(BFE_IBE | BFE_TO)); 1052 1053 /* Clear reset and allow it to move through the core */ 1054 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_CLOCK | BFE_FGC)); 1055 CSR_READ_4(sc, BFE_SBTMSLOW); 1056 DELAY(10); 1057 1058 /* Leave the clock set */ 1059 CSR_WRITE_4(sc, BFE_SBTMSLOW, BFE_CLOCK); 1060 CSR_READ_4(sc, BFE_SBTMSLOW); 1061 DELAY(10); 1062 } 1063 1064 static void 1065 bfe_cam_write(struct bfe_softc *sc, u_char *data, int index) 1066 { 1067 u_int32_t val; 1068 1069 val = ((u_int32_t) data[2]) << 24; 1070 val |= ((u_int32_t) data[3]) << 16; 1071 val |= ((u_int32_t) data[4]) << 8; 1072 val |= ((u_int32_t) data[5]); 1073 CSR_WRITE_4(sc, BFE_CAM_DATA_LO, val); 1074 val = (BFE_CAM_HI_VALID | 1075 (((u_int32_t) data[0]) << 8) | 1076 (((u_int32_t) data[1]))); 1077 CSR_WRITE_4(sc, BFE_CAM_DATA_HI, val); 1078 CSR_WRITE_4(sc, BFE_CAM_CTRL, (BFE_CAM_WRITE | 1079 ((u_int32_t) index << BFE_CAM_INDEX_SHIFT))); 1080 bfe_wait_bit(sc, BFE_CAM_CTRL, BFE_CAM_BUSY, 10000, 1); 1081 } 1082 1083 static void 1084 bfe_set_rx_mode(struct bfe_softc *sc) 1085 { 1086 struct ifnet *ifp = sc->bfe_ifp; 1087 struct ifmultiaddr *ifma; 1088 u_int32_t val; 1089 int i = 0; 1090 1091 BFE_LOCK_ASSERT(sc); 1092 1093 val = CSR_READ_4(sc, BFE_RXCONF); 1094 1095 if (ifp->if_flags & IFF_PROMISC) 1096 val |= BFE_RXCONF_PROMISC; 1097 else 1098 val &= ~BFE_RXCONF_PROMISC; 1099 1100 if (ifp->if_flags & IFF_BROADCAST) 1101 val &= ~BFE_RXCONF_DBCAST; 1102 else 1103 val |= BFE_RXCONF_DBCAST; 1104 1105 1106 CSR_WRITE_4(sc, BFE_CAM_CTRL, 0); 1107 bfe_cam_write(sc, IF_LLADDR(sc->bfe_ifp), i++); 1108 1109 if (ifp->if_flags & IFF_ALLMULTI) 1110 val |= BFE_RXCONF_ALLMULTI; 1111 else { 1112 val &= ~BFE_RXCONF_ALLMULTI; 1113 if_maddr_rlock(ifp); 1114 CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1115 if (ifma->ifma_addr->sa_family != AF_LINK) 1116 continue; 1117 bfe_cam_write(sc, 1118 LLADDR((struct sockaddr_dl *)ifma->ifma_addr), i++); 1119 } 1120 if_maddr_runlock(ifp); 1121 } 1122 1123 CSR_WRITE_4(sc, BFE_RXCONF, val); 1124 BFE_OR(sc, BFE_CAM_CTRL, BFE_CAM_ENABLE); 1125 } 1126 1127 static void 1128 bfe_dma_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1129 { 1130 struct bfe_dmamap_arg *ctx; 1131 1132 if (error != 0) 1133 return; 1134 1135 KASSERT(nseg == 1, ("%s : %d segments returned!", __func__, nseg)); 1136 1137 ctx = (struct bfe_dmamap_arg *)arg; 1138 ctx->bfe_busaddr = segs[0].ds_addr; 1139 } 1140 1141 static void 1142 bfe_release_resources(struct bfe_softc *sc) 1143 { 1144 1145 if (sc->bfe_intrhand != NULL) 1146 bus_teardown_intr(sc->bfe_dev, sc->bfe_irq, sc->bfe_intrhand); 1147 1148 if (sc->bfe_irq != NULL) 1149 bus_release_resource(sc->bfe_dev, SYS_RES_IRQ, 0, sc->bfe_irq); 1150 1151 if (sc->bfe_res != NULL) 1152 bus_release_resource(sc->bfe_dev, SYS_RES_MEMORY, PCIR_BAR(0), 1153 sc->bfe_res); 1154 1155 if (sc->bfe_ifp != NULL) 1156 if_free(sc->bfe_ifp); 1157 } 1158 1159 static void 1160 bfe_read_eeprom(struct bfe_softc *sc, u_int8_t *data) 1161 { 1162 long i; 1163 u_int16_t *ptr = (u_int16_t *)data; 1164 1165 for(i = 0; i < 128; i += 2) 1166 ptr[i/2] = CSR_READ_4(sc, 4096 + i); 1167 } 1168 1169 static int 1170 bfe_wait_bit(struct bfe_softc *sc, u_int32_t reg, u_int32_t bit, 1171 u_long timeout, const int clear) 1172 { 1173 u_long i; 1174 1175 for (i = 0; i < timeout; i++) { 1176 u_int32_t val = CSR_READ_4(sc, reg); 1177 1178 if (clear && !(val & bit)) 1179 break; 1180 if (!clear && (val & bit)) 1181 break; 1182 DELAY(10); 1183 } 1184 if (i == timeout) { 1185 device_printf(sc->bfe_dev, 1186 "BUG! Timeout waiting for bit %08x of register " 1187 "%x to %s.\n", bit, reg, (clear ? "clear" : "set")); 1188 return (-1); 1189 } 1190 return (0); 1191 } 1192 1193 static int 1194 bfe_readphy(struct bfe_softc *sc, u_int32_t reg, u_int32_t *val) 1195 { 1196 int err; 1197 1198 /* Clear MII ISR */ 1199 CSR_WRITE_4(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII); 1200 CSR_WRITE_4(sc, BFE_MDIO_DATA, (BFE_MDIO_SB_START | 1201 (BFE_MDIO_OP_READ << BFE_MDIO_OP_SHIFT) | 1202 (sc->bfe_phyaddr << BFE_MDIO_PMD_SHIFT) | 1203 (reg << BFE_MDIO_RA_SHIFT) | 1204 (BFE_MDIO_TA_VALID << BFE_MDIO_TA_SHIFT))); 1205 err = bfe_wait_bit(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII, 100, 0); 1206 *val = CSR_READ_4(sc, BFE_MDIO_DATA) & BFE_MDIO_DATA_DATA; 1207 1208 return (err); 1209 } 1210 1211 static int 1212 bfe_writephy(struct bfe_softc *sc, u_int32_t reg, u_int32_t val) 1213 { 1214 int status; 1215 1216 CSR_WRITE_4(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII); 1217 CSR_WRITE_4(sc, BFE_MDIO_DATA, (BFE_MDIO_SB_START | 1218 (BFE_MDIO_OP_WRITE << BFE_MDIO_OP_SHIFT) | 1219 (sc->bfe_phyaddr << BFE_MDIO_PMD_SHIFT) | 1220 (reg << BFE_MDIO_RA_SHIFT) | 1221 (BFE_MDIO_TA_VALID << BFE_MDIO_TA_SHIFT) | 1222 (val & BFE_MDIO_DATA_DATA))); 1223 status = bfe_wait_bit(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII, 100, 0); 1224 1225 return (status); 1226 } 1227 1228 /* 1229 * XXX - I think this is handled by the PHY driver, but it can't hurt to do it 1230 * twice 1231 */ 1232 static int 1233 bfe_setupphy(struct bfe_softc *sc) 1234 { 1235 u_int32_t val; 1236 1237 /* Enable activity LED */ 1238 bfe_readphy(sc, 26, &val); 1239 bfe_writephy(sc, 26, val & 0x7fff); 1240 bfe_readphy(sc, 26, &val); 1241 1242 /* Enable traffic meter LED mode */ 1243 bfe_readphy(sc, 27, &val); 1244 bfe_writephy(sc, 27, val | (1 << 6)); 1245 1246 return (0); 1247 } 1248 1249 static void 1250 bfe_stats_update(struct bfe_softc *sc) 1251 { 1252 struct bfe_hw_stats *stats; 1253 struct ifnet *ifp; 1254 uint32_t mib[BFE_MIB_CNT]; 1255 uint32_t reg, *val; 1256 1257 BFE_LOCK_ASSERT(sc); 1258 1259 val = mib; 1260 CSR_WRITE_4(sc, BFE_MIB_CTRL, BFE_MIB_CLR_ON_READ); 1261 for (reg = BFE_TX_GOOD_O; reg <= BFE_TX_PAUSE; reg += 4) 1262 *val++ = CSR_READ_4(sc, reg); 1263 for (reg = BFE_RX_GOOD_O; reg <= BFE_RX_NPAUSE; reg += 4) 1264 *val++ = CSR_READ_4(sc, reg); 1265 1266 ifp = sc->bfe_ifp; 1267 stats = &sc->bfe_stats; 1268 /* Tx stat. */ 1269 stats->tx_good_octets += mib[MIB_TX_GOOD_O]; 1270 stats->tx_good_frames += mib[MIB_TX_GOOD_P]; 1271 stats->tx_octets += mib[MIB_TX_O]; 1272 stats->tx_frames += mib[MIB_TX_P]; 1273 stats->tx_bcast_frames += mib[MIB_TX_BCAST]; 1274 stats->tx_mcast_frames += mib[MIB_TX_MCAST]; 1275 stats->tx_pkts_64 += mib[MIB_TX_64]; 1276 stats->tx_pkts_65_127 += mib[MIB_TX_65_127]; 1277 stats->tx_pkts_128_255 += mib[MIB_TX_128_255]; 1278 stats->tx_pkts_256_511 += mib[MIB_TX_256_511]; 1279 stats->tx_pkts_512_1023 += mib[MIB_TX_512_1023]; 1280 stats->tx_pkts_1024_max += mib[MIB_TX_1024_MAX]; 1281 stats->tx_jabbers += mib[MIB_TX_JABBER]; 1282 stats->tx_oversize_frames += mib[MIB_TX_OSIZE]; 1283 stats->tx_frag_frames += mib[MIB_TX_FRAG]; 1284 stats->tx_underruns += mib[MIB_TX_URUNS]; 1285 stats->tx_colls += mib[MIB_TX_TCOLS]; 1286 stats->tx_single_colls += mib[MIB_TX_SCOLS]; 1287 stats->tx_multi_colls += mib[MIB_TX_MCOLS]; 1288 stats->tx_excess_colls += mib[MIB_TX_ECOLS]; 1289 stats->tx_late_colls += mib[MIB_TX_LCOLS]; 1290 stats->tx_deferrals += mib[MIB_TX_DEFERED]; 1291 stats->tx_carrier_losts += mib[MIB_TX_CLOST]; 1292 stats->tx_pause_frames += mib[MIB_TX_PAUSE]; 1293 /* Rx stat. */ 1294 stats->rx_good_octets += mib[MIB_RX_GOOD_O]; 1295 stats->rx_good_frames += mib[MIB_RX_GOOD_P]; 1296 stats->rx_octets += mib[MIB_RX_O]; 1297 stats->rx_frames += mib[MIB_RX_P]; 1298 stats->rx_bcast_frames += mib[MIB_RX_BCAST]; 1299 stats->rx_mcast_frames += mib[MIB_RX_MCAST]; 1300 stats->rx_pkts_64 += mib[MIB_RX_64]; 1301 stats->rx_pkts_65_127 += mib[MIB_RX_65_127]; 1302 stats->rx_pkts_128_255 += mib[MIB_RX_128_255]; 1303 stats->rx_pkts_256_511 += mib[MIB_RX_256_511]; 1304 stats->rx_pkts_512_1023 += mib[MIB_RX_512_1023]; 1305 stats->rx_pkts_1024_max += mib[MIB_RX_1024_MAX]; 1306 stats->rx_jabbers += mib[MIB_RX_JABBER]; 1307 stats->rx_oversize_frames += mib[MIB_RX_OSIZE]; 1308 stats->rx_frag_frames += mib[MIB_RX_FRAG]; 1309 stats->rx_missed_frames += mib[MIB_RX_MISS]; 1310 stats->rx_crc_align_errs += mib[MIB_RX_CRCA]; 1311 stats->rx_runts += mib[MIB_RX_USIZE]; 1312 stats->rx_crc_errs += mib[MIB_RX_CRC]; 1313 stats->rx_align_errs += mib[MIB_RX_ALIGN]; 1314 stats->rx_symbol_errs += mib[MIB_RX_SYM]; 1315 stats->rx_pause_frames += mib[MIB_RX_PAUSE]; 1316 stats->rx_control_frames += mib[MIB_RX_NPAUSE]; 1317 1318 /* Update counters in ifnet. */ 1319 if_inc_counter(ifp, IFCOUNTER_OPACKETS, (u_long)mib[MIB_TX_GOOD_P]); 1320 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, (u_long)mib[MIB_TX_TCOLS]); 1321 if_inc_counter(ifp, IFCOUNTER_OERRORS, (u_long)mib[MIB_TX_URUNS] + 1322 (u_long)mib[MIB_TX_ECOLS] + 1323 (u_long)mib[MIB_TX_DEFERED] + 1324 (u_long)mib[MIB_TX_CLOST]); 1325 1326 if_inc_counter(ifp, IFCOUNTER_IPACKETS, (u_long)mib[MIB_RX_GOOD_P]); 1327 1328 if_inc_counter(ifp, IFCOUNTER_IERRORS, mib[MIB_RX_JABBER] + 1329 mib[MIB_RX_MISS] + 1330 mib[MIB_RX_CRCA] + 1331 mib[MIB_RX_USIZE] + 1332 mib[MIB_RX_CRC] + 1333 mib[MIB_RX_ALIGN] + 1334 mib[MIB_RX_SYM]); 1335 } 1336 1337 static void 1338 bfe_txeof(struct bfe_softc *sc) 1339 { 1340 struct bfe_tx_data *r; 1341 struct ifnet *ifp; 1342 int i, chipidx; 1343 1344 BFE_LOCK_ASSERT(sc); 1345 1346 ifp = sc->bfe_ifp; 1347 1348 chipidx = CSR_READ_4(sc, BFE_DMATX_STAT) & BFE_STAT_CDMASK; 1349 chipidx /= sizeof(struct bfe_desc); 1350 1351 i = sc->bfe_tx_cons; 1352 if (i == chipidx) 1353 return; 1354 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, 1355 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1356 /* Go through the mbufs and free those that have been transmitted */ 1357 for (; i != chipidx; BFE_INC(i, BFE_TX_LIST_CNT)) { 1358 r = &sc->bfe_tx_ring[i]; 1359 sc->bfe_tx_cnt--; 1360 if (r->bfe_mbuf == NULL) 1361 continue; 1362 bus_dmamap_sync(sc->bfe_txmbuf_tag, r->bfe_map, 1363 BUS_DMASYNC_POSTWRITE); 1364 bus_dmamap_unload(sc->bfe_txmbuf_tag, r->bfe_map); 1365 1366 m_freem(r->bfe_mbuf); 1367 r->bfe_mbuf = NULL; 1368 } 1369 1370 if (i != sc->bfe_tx_cons) { 1371 /* we freed up some mbufs */ 1372 sc->bfe_tx_cons = i; 1373 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1374 } 1375 1376 if (sc->bfe_tx_cnt == 0) 1377 sc->bfe_watchdog_timer = 0; 1378 } 1379 1380 /* Pass a received packet up the stack */ 1381 static void 1382 bfe_rxeof(struct bfe_softc *sc) 1383 { 1384 struct mbuf *m; 1385 struct ifnet *ifp; 1386 struct bfe_rxheader *rxheader; 1387 struct bfe_rx_data *r; 1388 int cons, prog; 1389 u_int32_t status, current, len, flags; 1390 1391 BFE_LOCK_ASSERT(sc); 1392 cons = sc->bfe_rx_cons; 1393 status = CSR_READ_4(sc, BFE_DMARX_STAT); 1394 current = (status & BFE_STAT_CDMASK) / sizeof(struct bfe_desc); 1395 1396 ifp = sc->bfe_ifp; 1397 1398 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, 1399 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1400 1401 for (prog = 0; current != cons; prog++, 1402 BFE_INC(cons, BFE_RX_LIST_CNT)) { 1403 r = &sc->bfe_rx_ring[cons]; 1404 m = r->bfe_mbuf; 1405 /* 1406 * Rx status should be read from mbuf such that we can't 1407 * delay bus_dmamap_sync(9). This hardware limiation 1408 * results in inefficent mbuf usage as bfe(4) couldn't 1409 * reuse mapped buffer from errored frame. 1410 */ 1411 if (bfe_list_newbuf(sc, cons) != 0) { 1412 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); 1413 bfe_discard_buf(sc, cons); 1414 continue; 1415 } 1416 rxheader = mtod(m, struct bfe_rxheader*); 1417 len = le16toh(rxheader->len); 1418 flags = le16toh(rxheader->flags); 1419 1420 /* Remove CRC bytes. */ 1421 len -= ETHER_CRC_LEN; 1422 1423 /* flag an error and try again */ 1424 if ((len > ETHER_MAX_LEN+32) || (flags & BFE_RX_FLAG_ERRORS)) { 1425 m_freem(m); 1426 continue; 1427 } 1428 1429 /* Make sure to skip header bytes written by hardware. */ 1430 m_adj(m, BFE_RX_OFFSET); 1431 m->m_len = m->m_pkthdr.len = len; 1432 1433 m->m_pkthdr.rcvif = ifp; 1434 BFE_UNLOCK(sc); 1435 (*ifp->if_input)(ifp, m); 1436 BFE_LOCK(sc); 1437 } 1438 1439 if (prog > 0) { 1440 sc->bfe_rx_cons = cons; 1441 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, 1442 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1443 } 1444 } 1445 1446 static void 1447 bfe_intr(void *xsc) 1448 { 1449 struct bfe_softc *sc = xsc; 1450 struct ifnet *ifp; 1451 u_int32_t istat; 1452 1453 ifp = sc->bfe_ifp; 1454 1455 BFE_LOCK(sc); 1456 1457 istat = CSR_READ_4(sc, BFE_ISTAT); 1458 1459 /* 1460 * Defer unsolicited interrupts - This is necessary because setting the 1461 * chips interrupt mask register to 0 doesn't actually stop the 1462 * interrupts 1463 */ 1464 istat &= BFE_IMASK_DEF; 1465 CSR_WRITE_4(sc, BFE_ISTAT, istat); 1466 CSR_READ_4(sc, BFE_ISTAT); 1467 1468 /* not expecting this interrupt, disregard it */ 1469 if (istat == 0 || (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1470 BFE_UNLOCK(sc); 1471 return; 1472 } 1473 1474 /* A packet was received */ 1475 if (istat & BFE_ISTAT_RX) 1476 bfe_rxeof(sc); 1477 1478 /* A packet was sent */ 1479 if (istat & BFE_ISTAT_TX) 1480 bfe_txeof(sc); 1481 1482 if (istat & BFE_ISTAT_ERRORS) { 1483 1484 if (istat & BFE_ISTAT_DSCE) { 1485 device_printf(sc->bfe_dev, "Descriptor Error\n"); 1486 bfe_stop(sc); 1487 BFE_UNLOCK(sc); 1488 return; 1489 } 1490 1491 if (istat & BFE_ISTAT_DPE) { 1492 device_printf(sc->bfe_dev, 1493 "Descriptor Protocol Error\n"); 1494 bfe_stop(sc); 1495 BFE_UNLOCK(sc); 1496 return; 1497 } 1498 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1499 bfe_init_locked(sc); 1500 } 1501 1502 /* We have packets pending, fire them out */ 1503 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1504 bfe_start_locked(ifp); 1505 1506 BFE_UNLOCK(sc); 1507 } 1508 1509 static int 1510 bfe_encap(struct bfe_softc *sc, struct mbuf **m_head) 1511 { 1512 struct bfe_desc *d; 1513 struct bfe_tx_data *r, *r1; 1514 struct mbuf *m; 1515 bus_dmamap_t map; 1516 bus_dma_segment_t txsegs[BFE_MAXTXSEGS]; 1517 uint32_t cur, si; 1518 int error, i, nsegs; 1519 1520 BFE_LOCK_ASSERT(sc); 1521 1522 M_ASSERTPKTHDR((*m_head)); 1523 1524 si = cur = sc->bfe_tx_prod; 1525 r = &sc->bfe_tx_ring[cur]; 1526 error = bus_dmamap_load_mbuf_sg(sc->bfe_txmbuf_tag, r->bfe_map, *m_head, 1527 txsegs, &nsegs, 0); 1528 if (error == EFBIG) { 1529 m = m_collapse(*m_head, M_NOWAIT, BFE_MAXTXSEGS); 1530 if (m == NULL) { 1531 m_freem(*m_head); 1532 *m_head = NULL; 1533 return (ENOMEM); 1534 } 1535 *m_head = m; 1536 error = bus_dmamap_load_mbuf_sg(sc->bfe_txmbuf_tag, r->bfe_map, 1537 *m_head, txsegs, &nsegs, 0); 1538 if (error != 0) { 1539 m_freem(*m_head); 1540 *m_head = NULL; 1541 return (error); 1542 } 1543 } else if (error != 0) 1544 return (error); 1545 if (nsegs == 0) { 1546 m_freem(*m_head); 1547 *m_head = NULL; 1548 return (EIO); 1549 } 1550 1551 if (sc->bfe_tx_cnt + nsegs > BFE_TX_LIST_CNT - 1) { 1552 bus_dmamap_unload(sc->bfe_txmbuf_tag, r->bfe_map); 1553 return (ENOBUFS); 1554 } 1555 1556 for (i = 0; i < nsegs; i++) { 1557 d = &sc->bfe_tx_list[cur]; 1558 d->bfe_ctrl = htole32(txsegs[i].ds_len & BFE_DESC_LEN); 1559 d->bfe_ctrl |= htole32(BFE_DESC_IOC); 1560 if (cur == BFE_TX_LIST_CNT - 1) 1561 /* 1562 * Tell the chip to wrap to the start of 1563 * the descriptor list. 1564 */ 1565 d->bfe_ctrl |= htole32(BFE_DESC_EOT); 1566 /* The chip needs all addresses to be added to BFE_PCI_DMA. */ 1567 d->bfe_addr = htole32(BFE_ADDR_LO(txsegs[i].ds_addr) + 1568 BFE_PCI_DMA); 1569 BFE_INC(cur, BFE_TX_LIST_CNT); 1570 } 1571 1572 /* Update producer index. */ 1573 sc->bfe_tx_prod = cur; 1574 1575 /* Set EOF on the last descriptor. */ 1576 cur = (cur + BFE_TX_LIST_CNT - 1) % BFE_TX_LIST_CNT; 1577 d = &sc->bfe_tx_list[cur]; 1578 d->bfe_ctrl |= htole32(BFE_DESC_EOF); 1579 1580 /* Lastly set SOF on the first descriptor to avoid races. */ 1581 d = &sc->bfe_tx_list[si]; 1582 d->bfe_ctrl |= htole32(BFE_DESC_SOF); 1583 1584 r1 = &sc->bfe_tx_ring[cur]; 1585 map = r->bfe_map; 1586 r->bfe_map = r1->bfe_map; 1587 r1->bfe_map = map; 1588 r1->bfe_mbuf = *m_head; 1589 sc->bfe_tx_cnt += nsegs; 1590 1591 bus_dmamap_sync(sc->bfe_txmbuf_tag, map, BUS_DMASYNC_PREWRITE); 1592 1593 return (0); 1594 } 1595 1596 /* 1597 * Set up to transmit a packet. 1598 */ 1599 static void 1600 bfe_start(struct ifnet *ifp) 1601 { 1602 BFE_LOCK((struct bfe_softc *)ifp->if_softc); 1603 bfe_start_locked(ifp); 1604 BFE_UNLOCK((struct bfe_softc *)ifp->if_softc); 1605 } 1606 1607 /* 1608 * Set up to transmit a packet. The softc is already locked. 1609 */ 1610 static void 1611 bfe_start_locked(struct ifnet *ifp) 1612 { 1613 struct bfe_softc *sc; 1614 struct mbuf *m_head; 1615 int queued; 1616 1617 sc = ifp->if_softc; 1618 1619 BFE_LOCK_ASSERT(sc); 1620 1621 /* 1622 * Not much point trying to send if the link is down 1623 * or we have nothing to send. 1624 */ 1625 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 1626 IFF_DRV_RUNNING || (sc->bfe_flags & BFE_FLAG_LINK) == 0) 1627 return; 1628 1629 for (queued = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) && 1630 sc->bfe_tx_cnt < BFE_TX_LIST_CNT - 1;) { 1631 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 1632 if (m_head == NULL) 1633 break; 1634 1635 /* 1636 * Pack the data into the tx ring. If we dont have 1637 * enough room, let the chip drain the ring. 1638 */ 1639 if (bfe_encap(sc, &m_head)) { 1640 if (m_head == NULL) 1641 break; 1642 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 1643 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1644 break; 1645 } 1646 1647 queued++; 1648 1649 /* 1650 * If there's a BPF listener, bounce a copy of this frame 1651 * to him. 1652 */ 1653 BPF_MTAP(ifp, m_head); 1654 } 1655 1656 if (queued) { 1657 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, 1658 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1659 /* Transmit - twice due to apparent hardware bug */ 1660 CSR_WRITE_4(sc, BFE_DMATX_PTR, 1661 sc->bfe_tx_prod * sizeof(struct bfe_desc)); 1662 /* 1663 * XXX It seems the following write is not necessary 1664 * to kick Tx command. What might be required would be 1665 * a way flushing PCI posted write. Reading the register 1666 * back ensures the flush operation. In addition, 1667 * hardware will execute PCI posted write in the long 1668 * run and watchdog timer for the kick command was set 1669 * to 5 seconds. Therefore I think the second write 1670 * access is not necessary or could be replaced with 1671 * read operation. 1672 */ 1673 CSR_WRITE_4(sc, BFE_DMATX_PTR, 1674 sc->bfe_tx_prod * sizeof(struct bfe_desc)); 1675 1676 /* 1677 * Set a timeout in case the chip goes out to lunch. 1678 */ 1679 sc->bfe_watchdog_timer = 5; 1680 } 1681 } 1682 1683 static void 1684 bfe_init(void *xsc) 1685 { 1686 BFE_LOCK((struct bfe_softc *)xsc); 1687 bfe_init_locked(xsc); 1688 BFE_UNLOCK((struct bfe_softc *)xsc); 1689 } 1690 1691 static void 1692 bfe_init_locked(void *xsc) 1693 { 1694 struct bfe_softc *sc = (struct bfe_softc*)xsc; 1695 struct ifnet *ifp = sc->bfe_ifp; 1696 struct mii_data *mii; 1697 1698 BFE_LOCK_ASSERT(sc); 1699 1700 mii = device_get_softc(sc->bfe_miibus); 1701 1702 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1703 return; 1704 1705 bfe_stop(sc); 1706 bfe_chip_reset(sc); 1707 1708 if (bfe_list_rx_init(sc) == ENOBUFS) { 1709 device_printf(sc->bfe_dev, 1710 "%s: Not enough memory for list buffers\n", __func__); 1711 bfe_stop(sc); 1712 return; 1713 } 1714 bfe_list_tx_init(sc); 1715 1716 bfe_set_rx_mode(sc); 1717 1718 /* Enable the chip and core */ 1719 BFE_OR(sc, BFE_ENET_CTRL, BFE_ENET_ENABLE); 1720 /* Enable interrupts */ 1721 CSR_WRITE_4(sc, BFE_IMASK, BFE_IMASK_DEF); 1722 1723 /* Clear link state and change media. */ 1724 sc->bfe_flags &= ~BFE_FLAG_LINK; 1725 mii_mediachg(mii); 1726 1727 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1728 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1729 1730 callout_reset(&sc->bfe_stat_co, hz, bfe_tick, sc); 1731 } 1732 1733 /* 1734 * Set media options. 1735 */ 1736 static int 1737 bfe_ifmedia_upd(struct ifnet *ifp) 1738 { 1739 struct bfe_softc *sc; 1740 struct mii_data *mii; 1741 struct mii_softc *miisc; 1742 int error; 1743 1744 sc = ifp->if_softc; 1745 BFE_LOCK(sc); 1746 1747 mii = device_get_softc(sc->bfe_miibus); 1748 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 1749 PHY_RESET(miisc); 1750 error = mii_mediachg(mii); 1751 BFE_UNLOCK(sc); 1752 1753 return (error); 1754 } 1755 1756 /* 1757 * Report current media status. 1758 */ 1759 static void 1760 bfe_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 1761 { 1762 struct bfe_softc *sc = ifp->if_softc; 1763 struct mii_data *mii; 1764 1765 BFE_LOCK(sc); 1766 mii = device_get_softc(sc->bfe_miibus); 1767 mii_pollstat(mii); 1768 ifmr->ifm_active = mii->mii_media_active; 1769 ifmr->ifm_status = mii->mii_media_status; 1770 BFE_UNLOCK(sc); 1771 } 1772 1773 static int 1774 bfe_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 1775 { 1776 struct bfe_softc *sc = ifp->if_softc; 1777 struct ifreq *ifr = (struct ifreq *) data; 1778 struct mii_data *mii; 1779 int error = 0; 1780 1781 switch (command) { 1782 case SIOCSIFFLAGS: 1783 BFE_LOCK(sc); 1784 if (ifp->if_flags & IFF_UP) { 1785 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1786 bfe_set_rx_mode(sc); 1787 else if ((sc->bfe_flags & BFE_FLAG_DETACH) == 0) 1788 bfe_init_locked(sc); 1789 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1790 bfe_stop(sc); 1791 BFE_UNLOCK(sc); 1792 break; 1793 case SIOCADDMULTI: 1794 case SIOCDELMULTI: 1795 BFE_LOCK(sc); 1796 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1797 bfe_set_rx_mode(sc); 1798 BFE_UNLOCK(sc); 1799 break; 1800 case SIOCGIFMEDIA: 1801 case SIOCSIFMEDIA: 1802 mii = device_get_softc(sc->bfe_miibus); 1803 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 1804 break; 1805 default: 1806 error = ether_ioctl(ifp, command, data); 1807 break; 1808 } 1809 1810 return (error); 1811 } 1812 1813 static void 1814 bfe_watchdog(struct bfe_softc *sc) 1815 { 1816 struct ifnet *ifp; 1817 1818 BFE_LOCK_ASSERT(sc); 1819 1820 if (sc->bfe_watchdog_timer == 0 || --sc->bfe_watchdog_timer) 1821 return; 1822 1823 ifp = sc->bfe_ifp; 1824 1825 device_printf(sc->bfe_dev, "watchdog timeout -- resetting\n"); 1826 1827 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1828 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1829 bfe_init_locked(sc); 1830 1831 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1832 bfe_start_locked(ifp); 1833 } 1834 1835 static void 1836 bfe_tick(void *xsc) 1837 { 1838 struct bfe_softc *sc = xsc; 1839 struct mii_data *mii; 1840 1841 BFE_LOCK_ASSERT(sc); 1842 1843 mii = device_get_softc(sc->bfe_miibus); 1844 mii_tick(mii); 1845 bfe_stats_update(sc); 1846 bfe_watchdog(sc); 1847 callout_reset(&sc->bfe_stat_co, hz, bfe_tick, sc); 1848 } 1849 1850 /* 1851 * Stop the adapter and free any mbufs allocated to the 1852 * RX and TX lists. 1853 */ 1854 static void 1855 bfe_stop(struct bfe_softc *sc) 1856 { 1857 struct ifnet *ifp; 1858 1859 BFE_LOCK_ASSERT(sc); 1860 1861 ifp = sc->bfe_ifp; 1862 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 1863 sc->bfe_flags &= ~BFE_FLAG_LINK; 1864 callout_stop(&sc->bfe_stat_co); 1865 sc->bfe_watchdog_timer = 0; 1866 1867 bfe_chip_halt(sc); 1868 bfe_tx_ring_free(sc); 1869 bfe_rx_ring_free(sc); 1870 } 1871 1872 static int 1873 sysctl_bfe_stats(SYSCTL_HANDLER_ARGS) 1874 { 1875 struct bfe_softc *sc; 1876 struct bfe_hw_stats *stats; 1877 int error, result; 1878 1879 result = -1; 1880 error = sysctl_handle_int(oidp, &result, 0, req); 1881 1882 if (error != 0 || req->newptr == NULL) 1883 return (error); 1884 1885 if (result != 1) 1886 return (error); 1887 1888 sc = (struct bfe_softc *)arg1; 1889 stats = &sc->bfe_stats; 1890 1891 printf("%s statistics:\n", device_get_nameunit(sc->bfe_dev)); 1892 printf("Transmit good octets : %ju\n", 1893 (uintmax_t)stats->tx_good_octets); 1894 printf("Transmit good frames : %ju\n", 1895 (uintmax_t)stats->tx_good_frames); 1896 printf("Transmit octets : %ju\n", 1897 (uintmax_t)stats->tx_octets); 1898 printf("Transmit frames : %ju\n", 1899 (uintmax_t)stats->tx_frames); 1900 printf("Transmit broadcast frames : %ju\n", 1901 (uintmax_t)stats->tx_bcast_frames); 1902 printf("Transmit multicast frames : %ju\n", 1903 (uintmax_t)stats->tx_mcast_frames); 1904 printf("Transmit frames 64 bytes : %ju\n", 1905 (uint64_t)stats->tx_pkts_64); 1906 printf("Transmit frames 65 to 127 bytes : %ju\n", 1907 (uint64_t)stats->tx_pkts_65_127); 1908 printf("Transmit frames 128 to 255 bytes : %ju\n", 1909 (uint64_t)stats->tx_pkts_128_255); 1910 printf("Transmit frames 256 to 511 bytes : %ju\n", 1911 (uint64_t)stats->tx_pkts_256_511); 1912 printf("Transmit frames 512 to 1023 bytes : %ju\n", 1913 (uint64_t)stats->tx_pkts_512_1023); 1914 printf("Transmit frames 1024 to max bytes : %ju\n", 1915 (uint64_t)stats->tx_pkts_1024_max); 1916 printf("Transmit jabber errors : %u\n", stats->tx_jabbers); 1917 printf("Transmit oversized frames : %ju\n", 1918 (uint64_t)stats->tx_oversize_frames); 1919 printf("Transmit fragmented frames : %ju\n", 1920 (uint64_t)stats->tx_frag_frames); 1921 printf("Transmit underruns : %u\n", stats->tx_colls); 1922 printf("Transmit total collisions : %u\n", stats->tx_single_colls); 1923 printf("Transmit single collisions : %u\n", stats->tx_single_colls); 1924 printf("Transmit multiple collisions : %u\n", stats->tx_multi_colls); 1925 printf("Transmit excess collisions : %u\n", stats->tx_excess_colls); 1926 printf("Transmit late collisions : %u\n", stats->tx_late_colls); 1927 printf("Transmit deferrals : %u\n", stats->tx_deferrals); 1928 printf("Transmit carrier losts : %u\n", stats->tx_carrier_losts); 1929 printf("Transmit pause frames : %u\n", stats->tx_pause_frames); 1930 1931 printf("Receive good octets : %ju\n", 1932 (uintmax_t)stats->rx_good_octets); 1933 printf("Receive good frames : %ju\n", 1934 (uintmax_t)stats->rx_good_frames); 1935 printf("Receive octets : %ju\n", 1936 (uintmax_t)stats->rx_octets); 1937 printf("Receive frames : %ju\n", 1938 (uintmax_t)stats->rx_frames); 1939 printf("Receive broadcast frames : %ju\n", 1940 (uintmax_t)stats->rx_bcast_frames); 1941 printf("Receive multicast frames : %ju\n", 1942 (uintmax_t)stats->rx_mcast_frames); 1943 printf("Receive frames 64 bytes : %ju\n", 1944 (uint64_t)stats->rx_pkts_64); 1945 printf("Receive frames 65 to 127 bytes : %ju\n", 1946 (uint64_t)stats->rx_pkts_65_127); 1947 printf("Receive frames 128 to 255 bytes : %ju\n", 1948 (uint64_t)stats->rx_pkts_128_255); 1949 printf("Receive frames 256 to 511 bytes : %ju\n", 1950 (uint64_t)stats->rx_pkts_256_511); 1951 printf("Receive frames 512 to 1023 bytes : %ju\n", 1952 (uint64_t)stats->rx_pkts_512_1023); 1953 printf("Receive frames 1024 to max bytes : %ju\n", 1954 (uint64_t)stats->rx_pkts_1024_max); 1955 printf("Receive jabber errors : %u\n", stats->rx_jabbers); 1956 printf("Receive oversized frames : %ju\n", 1957 (uint64_t)stats->rx_oversize_frames); 1958 printf("Receive fragmented frames : %ju\n", 1959 (uint64_t)stats->rx_frag_frames); 1960 printf("Receive missed frames : %u\n", stats->rx_missed_frames); 1961 printf("Receive CRC align errors : %u\n", stats->rx_crc_align_errs); 1962 printf("Receive undersized frames : %u\n", stats->rx_runts); 1963 printf("Receive CRC errors : %u\n", stats->rx_crc_errs); 1964 printf("Receive align errors : %u\n", stats->rx_align_errs); 1965 printf("Receive symbol errors : %u\n", stats->rx_symbol_errs); 1966 printf("Receive pause frames : %u\n", stats->rx_pause_frames); 1967 printf("Receive control frames : %u\n", stats->rx_control_frames); 1968 1969 return (error); 1970 }
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