Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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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 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/bus.h> 35 #include <sys/endian.h> 36 #include <sys/kernel.h> 37 #include <sys/malloc.h> 38 #include <sys/mbuf.h> 39 #include <sys/module.h> 40 #include <sys/rman.h> 41 #include <sys/socket.h> 42 #include <sys/sockio.h> 43 #include <sys/sysctl.h> 44 45 #include <net/bpf.h> 46 #include <net/if.h> 47 #include <net/if_var.h> 48 #include <net/ethernet.h> 49 #include <net/if_dl.h> 50 #include <net/if_media.h> 51 #include <net/if_types.h> 52 #include <net/if_vlan_var.h> 53 54 #include <dev/mii/mii.h> 55 #include <dev/mii/miivar.h> 56 57 #include <dev/pci/pcireg.h> 58 #include <dev/pci/pcivar.h> 59 60 #include <machine/bus.h> 61 62 #include <dev/bfe/if_bfereg.h> 63 64 MODULE_DEPEND(bfe, pci, 1, 1, 1); 65 MODULE_DEPEND(bfe, ether, 1, 1, 1); 66 MODULE_DEPEND(bfe, miibus, 1, 1, 1); 67 68 /* "device miibus" required. See GENERIC if you get errors here. */ 69 #include "miibus_if.h" 70 71 #define BFE_DEVDESC_MAX 64 /* Maximum device description length */ 72 73 static struct bfe_type bfe_devs[] = { 74 { BCOM_VENDORID, BCOM_DEVICEID_BCM4401, 75 "Broadcom BCM4401 Fast Ethernet" }, 76 { BCOM_VENDORID, BCOM_DEVICEID_BCM4401B0, 77 "Broadcom BCM4401-B0 Fast Ethernet" }, 78 { 0, 0, NULL } 79 }; 80 81 static int bfe_probe (device_t); 82 static int bfe_attach (device_t); 83 static int bfe_detach (device_t); 84 static int bfe_suspend (device_t); 85 static int bfe_resume (device_t); 86 static void bfe_release_resources (struct bfe_softc *); 87 static void bfe_intr (void *); 88 static int bfe_encap (struct bfe_softc *, struct mbuf **); 89 static void bfe_start (struct ifnet *); 90 static void bfe_start_locked (struct ifnet *); 91 static int bfe_ioctl (struct ifnet *, u_long, caddr_t); 92 static void bfe_init (void *); 93 static void bfe_init_locked (void *); 94 static void bfe_stop (struct bfe_softc *); 95 static void bfe_watchdog (struct bfe_softc *); 96 static int bfe_shutdown (device_t); 97 static void bfe_tick (void *); 98 static void bfe_txeof (struct bfe_softc *); 99 static void bfe_rxeof (struct bfe_softc *); 100 static void bfe_set_rx_mode (struct bfe_softc *); 101 static int bfe_list_rx_init (struct bfe_softc *); 102 static void bfe_list_tx_init (struct bfe_softc *); 103 static void bfe_discard_buf (struct bfe_softc *, int); 104 static int bfe_list_newbuf (struct bfe_softc *, int); 105 static void bfe_rx_ring_free (struct bfe_softc *); 106 107 static void bfe_pci_setup (struct bfe_softc *, u_int32_t); 108 static int bfe_ifmedia_upd (struct ifnet *); 109 static void bfe_ifmedia_sts (struct ifnet *, struct ifmediareq *); 110 static int bfe_miibus_readreg (device_t, int, int); 111 static int bfe_miibus_writereg (device_t, int, int, int); 112 static void bfe_miibus_statchg (device_t); 113 static int bfe_wait_bit (struct bfe_softc *, u_int32_t, u_int32_t, 114 u_long, const int); 115 static void bfe_get_config (struct bfe_softc *sc); 116 static void bfe_read_eeprom (struct bfe_softc *, u_int8_t *); 117 static void bfe_stats_update (struct bfe_softc *); 118 static void bfe_clear_stats (struct bfe_softc *); 119 static int bfe_readphy (struct bfe_softc *, u_int32_t, u_int32_t*); 120 static int bfe_writephy (struct bfe_softc *, u_int32_t, u_int32_t); 121 static int bfe_resetphy (struct bfe_softc *); 122 static int bfe_setupphy (struct bfe_softc *); 123 static void bfe_chip_reset (struct bfe_softc *); 124 static void bfe_chip_halt (struct bfe_softc *); 125 static void bfe_core_reset (struct bfe_softc *); 126 static void bfe_core_disable (struct bfe_softc *); 127 static int bfe_dma_alloc (struct bfe_softc *); 128 static void bfe_dma_free (struct bfe_softc *sc); 129 static void bfe_dma_map (void *, bus_dma_segment_t *, int, int); 130 static void bfe_cam_write (struct bfe_softc *, u_char *, int); 131 static int sysctl_bfe_stats (SYSCTL_HANDLER_ARGS); 132 133 static device_method_t bfe_methods[] = { 134 /* Device interface */ 135 DEVMETHOD(device_probe, bfe_probe), 136 DEVMETHOD(device_attach, bfe_attach), 137 DEVMETHOD(device_detach, bfe_detach), 138 DEVMETHOD(device_shutdown, bfe_shutdown), 139 DEVMETHOD(device_suspend, bfe_suspend), 140 DEVMETHOD(device_resume, bfe_resume), 141 142 /* MII interface */ 143 DEVMETHOD(miibus_readreg, bfe_miibus_readreg), 144 DEVMETHOD(miibus_writereg, bfe_miibus_writereg), 145 DEVMETHOD(miibus_statchg, bfe_miibus_statchg), 146 147 DEVMETHOD_END 148 }; 149 150 static driver_t bfe_driver = { 151 "bfe", 152 bfe_methods, 153 sizeof(struct bfe_softc) 154 }; 155 156 DRIVER_MODULE(bfe, pci, bfe_driver, 0, 0); 157 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, bfe, bfe_devs, 158 nitems(bfe_devs) - 1); 159 DRIVER_MODULE(miibus, bfe, miibus_driver, 0, 0); 160 161 /* 162 * Probe for a Broadcom 4401 chip. 163 */ 164 static int 165 bfe_probe(device_t dev) 166 { 167 struct bfe_type *t; 168 169 t = bfe_devs; 170 171 while (t->bfe_name != NULL) { 172 if (pci_get_vendor(dev) == t->bfe_vid && 173 pci_get_device(dev) == t->bfe_did) { 174 device_set_desc(dev, t->bfe_name); 175 return (BUS_PROBE_DEFAULT); 176 } 177 t++; 178 } 179 180 return (ENXIO); 181 } 182 183 struct bfe_dmamap_arg { 184 bus_addr_t bfe_busaddr; 185 }; 186 187 static int 188 bfe_dma_alloc(struct bfe_softc *sc) 189 { 190 struct bfe_dmamap_arg ctx; 191 struct bfe_rx_data *rd; 192 struct bfe_tx_data *td; 193 int error, i; 194 195 /* 196 * parent tag. Apparently the chip cannot handle any DMA address 197 * greater than 1GB. 198 */ 199 error = bus_dma_tag_create(bus_get_dma_tag(sc->bfe_dev), /* parent */ 200 1, 0, /* alignment, boundary */ 201 BFE_DMA_MAXADDR, /* lowaddr */ 202 BUS_SPACE_MAXADDR, /* highaddr */ 203 NULL, NULL, /* filter, filterarg */ 204 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 205 0, /* nsegments */ 206 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 207 0, /* flags */ 208 NULL, NULL, /* lockfunc, lockarg */ 209 &sc->bfe_parent_tag); 210 if (error != 0) { 211 device_printf(sc->bfe_dev, "cannot create parent DMA tag.\n"); 212 goto fail; 213 } 214 215 /* Create tag for Tx ring. */ 216 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */ 217 BFE_TX_RING_ALIGN, 0, /* alignment, boundary */ 218 BUS_SPACE_MAXADDR, /* lowaddr */ 219 BUS_SPACE_MAXADDR, /* highaddr */ 220 NULL, NULL, /* filter, filterarg */ 221 BFE_TX_LIST_SIZE, /* maxsize */ 222 1, /* nsegments */ 223 BFE_TX_LIST_SIZE, /* maxsegsize */ 224 0, /* flags */ 225 NULL, NULL, /* lockfunc, lockarg */ 226 &sc->bfe_tx_tag); 227 if (error != 0) { 228 device_printf(sc->bfe_dev, "cannot create Tx ring DMA tag.\n"); 229 goto fail; 230 } 231 232 /* Create tag for Rx ring. */ 233 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */ 234 BFE_RX_RING_ALIGN, 0, /* alignment, boundary */ 235 BUS_SPACE_MAXADDR, /* lowaddr */ 236 BUS_SPACE_MAXADDR, /* highaddr */ 237 NULL, NULL, /* filter, filterarg */ 238 BFE_RX_LIST_SIZE, /* maxsize */ 239 1, /* nsegments */ 240 BFE_RX_LIST_SIZE, /* maxsegsize */ 241 0, /* flags */ 242 NULL, NULL, /* lockfunc, lockarg */ 243 &sc->bfe_rx_tag); 244 if (error != 0) { 245 device_printf(sc->bfe_dev, "cannot create Rx ring DMA tag.\n"); 246 goto fail; 247 } 248 249 /* Create tag for Tx buffers. */ 250 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */ 251 1, 0, /* alignment, boundary */ 252 BUS_SPACE_MAXADDR, /* lowaddr */ 253 BUS_SPACE_MAXADDR, /* highaddr */ 254 NULL, NULL, /* filter, filterarg */ 255 MCLBYTES * BFE_MAXTXSEGS, /* maxsize */ 256 BFE_MAXTXSEGS, /* nsegments */ 257 MCLBYTES, /* maxsegsize */ 258 0, /* flags */ 259 NULL, NULL, /* lockfunc, lockarg */ 260 &sc->bfe_txmbuf_tag); 261 if (error != 0) { 262 device_printf(sc->bfe_dev, 263 "cannot create Tx buffer DMA tag.\n"); 264 goto fail; 265 } 266 267 /* Create tag for Rx buffers. */ 268 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */ 269 1, 0, /* alignment, boundary */ 270 BUS_SPACE_MAXADDR, /* lowaddr */ 271 BUS_SPACE_MAXADDR, /* highaddr */ 272 NULL, NULL, /* filter, filterarg */ 273 MCLBYTES, /* maxsize */ 274 1, /* nsegments */ 275 MCLBYTES, /* maxsegsize */ 276 0, /* flags */ 277 NULL, NULL, /* lockfunc, lockarg */ 278 &sc->bfe_rxmbuf_tag); 279 if (error != 0) { 280 device_printf(sc->bfe_dev, 281 "cannot create Rx buffer DMA tag.\n"); 282 goto fail; 283 } 284 285 /* Allocate DMA'able memory and load DMA map. */ 286 error = bus_dmamem_alloc(sc->bfe_tx_tag, (void *)&sc->bfe_tx_list, 287 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, &sc->bfe_tx_map); 288 if (error != 0) { 289 device_printf(sc->bfe_dev, 290 "cannot allocate DMA'able memory for Tx ring.\n"); 291 goto fail; 292 } 293 ctx.bfe_busaddr = 0; 294 error = bus_dmamap_load(sc->bfe_tx_tag, sc->bfe_tx_map, 295 sc->bfe_tx_list, BFE_TX_LIST_SIZE, bfe_dma_map, &ctx, 296 BUS_DMA_NOWAIT); 297 if (error != 0 || ctx.bfe_busaddr == 0) { 298 device_printf(sc->bfe_dev, 299 "cannot load DMA'able memory for Tx ring.\n"); 300 goto fail; 301 } 302 sc->bfe_tx_dma = BFE_ADDR_LO(ctx.bfe_busaddr); 303 304 error = bus_dmamem_alloc(sc->bfe_rx_tag, (void *)&sc->bfe_rx_list, 305 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, &sc->bfe_rx_map); 306 if (error != 0) { 307 device_printf(sc->bfe_dev, 308 "cannot allocate DMA'able memory for Rx ring.\n"); 309 goto fail; 310 } 311 ctx.bfe_busaddr = 0; 312 error = bus_dmamap_load(sc->bfe_rx_tag, sc->bfe_rx_map, 313 sc->bfe_rx_list, BFE_RX_LIST_SIZE, bfe_dma_map, &ctx, 314 BUS_DMA_NOWAIT); 315 if (error != 0 || ctx.bfe_busaddr == 0) { 316 device_printf(sc->bfe_dev, 317 "cannot load DMA'able memory for Rx ring.\n"); 318 goto fail; 319 } 320 sc->bfe_rx_dma = BFE_ADDR_LO(ctx.bfe_busaddr); 321 322 /* Create DMA maps for Tx buffers. */ 323 for (i = 0; i < BFE_TX_LIST_CNT; i++) { 324 td = &sc->bfe_tx_ring[i]; 325 td->bfe_mbuf = NULL; 326 td->bfe_map = NULL; 327 error = bus_dmamap_create(sc->bfe_txmbuf_tag, 0, &td->bfe_map); 328 if (error != 0) { 329 device_printf(sc->bfe_dev, 330 "cannot create DMA map for Tx.\n"); 331 goto fail; 332 } 333 } 334 335 /* Create spare DMA map for Rx buffers. */ 336 error = bus_dmamap_create(sc->bfe_rxmbuf_tag, 0, &sc->bfe_rx_sparemap); 337 if (error != 0) { 338 device_printf(sc->bfe_dev, "cannot create spare DMA map for Rx.\n"); 339 goto fail; 340 } 341 /* Create DMA maps for Rx buffers. */ 342 for (i = 0; i < BFE_RX_LIST_CNT; i++) { 343 rd = &sc->bfe_rx_ring[i]; 344 rd->bfe_mbuf = NULL; 345 rd->bfe_map = NULL; 346 rd->bfe_ctrl = 0; 347 error = bus_dmamap_create(sc->bfe_rxmbuf_tag, 0, &rd->bfe_map); 348 if (error != 0) { 349 device_printf(sc->bfe_dev, 350 "cannot create DMA map for Rx.\n"); 351 goto fail; 352 } 353 } 354 355 fail: 356 return (error); 357 } 358 359 static void 360 bfe_dma_free(struct bfe_softc *sc) 361 { 362 struct bfe_tx_data *td; 363 struct bfe_rx_data *rd; 364 int i; 365 366 /* Tx ring. */ 367 if (sc->bfe_tx_tag != NULL) { 368 if (sc->bfe_tx_dma != 0) 369 bus_dmamap_unload(sc->bfe_tx_tag, sc->bfe_tx_map); 370 if (sc->bfe_tx_list != NULL) 371 bus_dmamem_free(sc->bfe_tx_tag, sc->bfe_tx_list, 372 sc->bfe_tx_map); 373 sc->bfe_tx_dma = 0; 374 sc->bfe_tx_list = NULL; 375 bus_dma_tag_destroy(sc->bfe_tx_tag); 376 sc->bfe_tx_tag = NULL; 377 } 378 379 /* Rx ring. */ 380 if (sc->bfe_rx_tag != NULL) { 381 if (sc->bfe_rx_dma != 0) 382 bus_dmamap_unload(sc->bfe_rx_tag, sc->bfe_rx_map); 383 if (sc->bfe_rx_list != NULL) 384 bus_dmamem_free(sc->bfe_rx_tag, sc->bfe_rx_list, 385 sc->bfe_rx_map); 386 sc->bfe_rx_dma = 0; 387 sc->bfe_rx_list = NULL; 388 bus_dma_tag_destroy(sc->bfe_rx_tag); 389 sc->bfe_rx_tag = NULL; 390 } 391 392 /* Tx buffers. */ 393 if (sc->bfe_txmbuf_tag != NULL) { 394 for (i = 0; i < BFE_TX_LIST_CNT; i++) { 395 td = &sc->bfe_tx_ring[i]; 396 if (td->bfe_map != NULL) { 397 bus_dmamap_destroy(sc->bfe_txmbuf_tag, 398 td->bfe_map); 399 td->bfe_map = NULL; 400 } 401 } 402 bus_dma_tag_destroy(sc->bfe_txmbuf_tag); 403 sc->bfe_txmbuf_tag = NULL; 404 } 405 406 /* Rx buffers. */ 407 if (sc->bfe_rxmbuf_tag != NULL) { 408 for (i = 0; i < BFE_RX_LIST_CNT; i++) { 409 rd = &sc->bfe_rx_ring[i]; 410 if (rd->bfe_map != NULL) { 411 bus_dmamap_destroy(sc->bfe_rxmbuf_tag, 412 rd->bfe_map); 413 rd->bfe_map = NULL; 414 } 415 } 416 if (sc->bfe_rx_sparemap != NULL) { 417 bus_dmamap_destroy(sc->bfe_rxmbuf_tag, 418 sc->bfe_rx_sparemap); 419 sc->bfe_rx_sparemap = NULL; 420 } 421 bus_dma_tag_destroy(sc->bfe_rxmbuf_tag); 422 sc->bfe_rxmbuf_tag = NULL; 423 } 424 425 if (sc->bfe_parent_tag != NULL) { 426 bus_dma_tag_destroy(sc->bfe_parent_tag); 427 sc->bfe_parent_tag = NULL; 428 } 429 } 430 431 static int 432 bfe_attach(device_t dev) 433 { 434 struct ifnet *ifp = NULL; 435 struct bfe_softc *sc; 436 int error = 0, rid; 437 438 sc = device_get_softc(dev); 439 mtx_init(&sc->bfe_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 440 MTX_DEF); 441 callout_init_mtx(&sc->bfe_stat_co, &sc->bfe_mtx, 0); 442 443 sc->bfe_dev = dev; 444 445 /* 446 * Map control/status registers. 447 */ 448 pci_enable_busmaster(dev); 449 450 rid = PCIR_BAR(0); 451 sc->bfe_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 452 RF_ACTIVE); 453 if (sc->bfe_res == NULL) { 454 device_printf(dev, "couldn't map memory\n"); 455 error = ENXIO; 456 goto fail; 457 } 458 459 /* Allocate interrupt */ 460 rid = 0; 461 462 sc->bfe_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 463 RF_SHAREABLE | RF_ACTIVE); 464 if (sc->bfe_irq == NULL) { 465 device_printf(dev, "couldn't map interrupt\n"); 466 error = ENXIO; 467 goto fail; 468 } 469 470 if (bfe_dma_alloc(sc) != 0) { 471 device_printf(dev, "failed to allocate DMA resources\n"); 472 error = ENXIO; 473 goto fail; 474 } 475 476 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 477 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 478 "stats", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0, 479 sysctl_bfe_stats, "I", "Statistics"); 480 481 /* Set up ifnet structure */ 482 ifp = sc->bfe_ifp = if_alloc(IFT_ETHER); 483 if (ifp == NULL) { 484 device_printf(dev, "failed to if_alloc()\n"); 485 error = ENOSPC; 486 goto fail; 487 } 488 ifp->if_softc = sc; 489 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 490 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 491 ifp->if_ioctl = bfe_ioctl; 492 ifp->if_start = bfe_start; 493 ifp->if_init = bfe_init; 494 IFQ_SET_MAXLEN(&ifp->if_snd, BFE_TX_QLEN); 495 ifp->if_snd.ifq_drv_maxlen = BFE_TX_QLEN; 496 IFQ_SET_READY(&ifp->if_snd); 497 498 bfe_get_config(sc); 499 500 /* Reset the chip and turn on the PHY */ 501 BFE_LOCK(sc); 502 bfe_chip_reset(sc); 503 BFE_UNLOCK(sc); 504 505 error = mii_attach(dev, &sc->bfe_miibus, ifp, bfe_ifmedia_upd, 506 bfe_ifmedia_sts, BMSR_DEFCAPMASK, sc->bfe_phyaddr, MII_OFFSET_ANY, 507 0); 508 if (error != 0) { 509 device_printf(dev, "attaching PHYs failed\n"); 510 goto fail; 511 } 512 513 ether_ifattach(ifp, sc->bfe_enaddr); 514 515 /* 516 * Tell the upper layer(s) we support long frames. 517 */ 518 ifp->if_hdrlen = sizeof(struct ether_vlan_header); 519 ifp->if_capabilities |= IFCAP_VLAN_MTU; 520 ifp->if_capenable |= IFCAP_VLAN_MTU; 521 522 /* 523 * Hook interrupt last to avoid having to lock softc 524 */ 525 error = bus_setup_intr(dev, sc->bfe_irq, INTR_TYPE_NET | INTR_MPSAFE, 526 NULL, bfe_intr, sc, &sc->bfe_intrhand); 527 528 if (error) { 529 device_printf(dev, "couldn't set up irq\n"); 530 goto fail; 531 } 532 fail: 533 if (error != 0) 534 bfe_detach(dev); 535 return (error); 536 } 537 538 static int 539 bfe_detach(device_t dev) 540 { 541 struct bfe_softc *sc; 542 struct ifnet *ifp; 543 544 sc = device_get_softc(dev); 545 546 ifp = sc->bfe_ifp; 547 548 if (device_is_attached(dev)) { 549 BFE_LOCK(sc); 550 sc->bfe_flags |= BFE_FLAG_DETACH; 551 bfe_stop(sc); 552 BFE_UNLOCK(sc); 553 callout_drain(&sc->bfe_stat_co); 554 if (ifp != NULL) 555 ether_ifdetach(ifp); 556 } 557 558 BFE_LOCK(sc); 559 bfe_chip_reset(sc); 560 BFE_UNLOCK(sc); 561 562 bus_generic_detach(dev); 563 if (sc->bfe_miibus != NULL) 564 device_delete_child(dev, sc->bfe_miibus); 565 566 bfe_release_resources(sc); 567 bfe_dma_free(sc); 568 mtx_destroy(&sc->bfe_mtx); 569 570 return (0); 571 } 572 573 /* 574 * Stop all chip I/O so that the kernel's probe routines don't 575 * get confused by errant DMAs when rebooting. 576 */ 577 static int 578 bfe_shutdown(device_t dev) 579 { 580 struct bfe_softc *sc; 581 582 sc = device_get_softc(dev); 583 BFE_LOCK(sc); 584 bfe_stop(sc); 585 586 BFE_UNLOCK(sc); 587 588 return (0); 589 } 590 591 static int 592 bfe_suspend(device_t dev) 593 { 594 struct bfe_softc *sc; 595 596 sc = device_get_softc(dev); 597 BFE_LOCK(sc); 598 bfe_stop(sc); 599 BFE_UNLOCK(sc); 600 601 return (0); 602 } 603 604 static int 605 bfe_resume(device_t dev) 606 { 607 struct bfe_softc *sc; 608 struct ifnet *ifp; 609 610 sc = device_get_softc(dev); 611 ifp = sc->bfe_ifp; 612 BFE_LOCK(sc); 613 bfe_chip_reset(sc); 614 if (ifp->if_flags & IFF_UP) { 615 bfe_init_locked(sc); 616 if (ifp->if_drv_flags & IFF_DRV_RUNNING && 617 !IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 618 bfe_start_locked(ifp); 619 } 620 BFE_UNLOCK(sc); 621 622 return (0); 623 } 624 625 static int 626 bfe_miibus_readreg(device_t dev, int phy, int reg) 627 { 628 struct bfe_softc *sc; 629 u_int32_t ret; 630 631 sc = device_get_softc(dev); 632 bfe_readphy(sc, reg, &ret); 633 634 return (ret); 635 } 636 637 static int 638 bfe_miibus_writereg(device_t dev, int phy, int reg, int val) 639 { 640 struct bfe_softc *sc; 641 642 sc = device_get_softc(dev); 643 bfe_writephy(sc, reg, val); 644 645 return (0); 646 } 647 648 static void 649 bfe_miibus_statchg(device_t dev) 650 { 651 struct bfe_softc *sc; 652 struct mii_data *mii; 653 u_int32_t val; 654 #ifdef notyet 655 u_int32_t flow; 656 #endif 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 #ifdef notyet 680 flow = CSR_READ_4(sc, BFE_RXCONF); 681 flow &= ~BFE_RXCONF_FLOW; 682 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) & 683 IFM_ETH_RXPAUSE) != 0) 684 flow |= BFE_RXCONF_FLOW; 685 CSR_WRITE_4(sc, BFE_RXCONF, flow); 686 /* 687 * It seems that the hardware has Tx pause issues 688 * so enable only Rx pause. 689 */ 690 flow = CSR_READ_4(sc, BFE_MAC_FLOW); 691 flow &= ~BFE_FLOW_PAUSE_ENAB; 692 CSR_WRITE_4(sc, BFE_MAC_FLOW, flow); 693 #endif 694 } 695 CSR_WRITE_4(sc, BFE_TX_CTRL, val); 696 } 697 698 static void 699 bfe_tx_ring_free(struct bfe_softc *sc) 700 { 701 int i; 702 703 for(i = 0; i < BFE_TX_LIST_CNT; i++) { 704 if (sc->bfe_tx_ring[i].bfe_mbuf != NULL) { 705 bus_dmamap_sync(sc->bfe_txmbuf_tag, 706 sc->bfe_tx_ring[i].bfe_map, BUS_DMASYNC_POSTWRITE); 707 bus_dmamap_unload(sc->bfe_txmbuf_tag, 708 sc->bfe_tx_ring[i].bfe_map); 709 m_freem(sc->bfe_tx_ring[i].bfe_mbuf); 710 sc->bfe_tx_ring[i].bfe_mbuf = NULL; 711 } 712 } 713 bzero(sc->bfe_tx_list, BFE_TX_LIST_SIZE); 714 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, 715 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 716 } 717 718 static void 719 bfe_rx_ring_free(struct bfe_softc *sc) 720 { 721 int i; 722 723 for (i = 0; i < BFE_RX_LIST_CNT; i++) { 724 if (sc->bfe_rx_ring[i].bfe_mbuf != NULL) { 725 bus_dmamap_sync(sc->bfe_rxmbuf_tag, 726 sc->bfe_rx_ring[i].bfe_map, BUS_DMASYNC_POSTREAD); 727 bus_dmamap_unload(sc->bfe_rxmbuf_tag, 728 sc->bfe_rx_ring[i].bfe_map); 729 m_freem(sc->bfe_rx_ring[i].bfe_mbuf); 730 sc->bfe_rx_ring[i].bfe_mbuf = NULL; 731 } 732 } 733 bzero(sc->bfe_rx_list, BFE_RX_LIST_SIZE); 734 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, 735 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 736 } 737 738 static int 739 bfe_list_rx_init(struct bfe_softc *sc) 740 { 741 struct bfe_rx_data *rd; 742 int i; 743 744 sc->bfe_rx_prod = sc->bfe_rx_cons = 0; 745 bzero(sc->bfe_rx_list, BFE_RX_LIST_SIZE); 746 for (i = 0; i < BFE_RX_LIST_CNT; i++) { 747 rd = &sc->bfe_rx_ring[i]; 748 rd->bfe_mbuf = NULL; 749 rd->bfe_ctrl = 0; 750 if (bfe_list_newbuf(sc, i) != 0) 751 return (ENOBUFS); 752 } 753 754 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, 755 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 756 CSR_WRITE_4(sc, BFE_DMARX_PTR, (i * sizeof(struct bfe_desc))); 757 758 return (0); 759 } 760 761 static void 762 bfe_list_tx_init(struct bfe_softc *sc) 763 { 764 int i; 765 766 sc->bfe_tx_cnt = sc->bfe_tx_prod = sc->bfe_tx_cons = 0; 767 bzero(sc->bfe_tx_list, BFE_TX_LIST_SIZE); 768 for (i = 0; i < BFE_TX_LIST_CNT; i++) 769 sc->bfe_tx_ring[i].bfe_mbuf = NULL; 770 771 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, 772 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 773 } 774 775 static void 776 bfe_discard_buf(struct bfe_softc *sc, int c) 777 { 778 struct bfe_rx_data *r; 779 struct bfe_desc *d; 780 781 r = &sc->bfe_rx_ring[c]; 782 d = &sc->bfe_rx_list[c]; 783 d->bfe_ctrl = htole32(r->bfe_ctrl); 784 } 785 786 static int 787 bfe_list_newbuf(struct bfe_softc *sc, int c) 788 { 789 struct bfe_rxheader *rx_header; 790 struct bfe_desc *d; 791 struct bfe_rx_data *r; 792 struct mbuf *m; 793 bus_dma_segment_t segs[1]; 794 bus_dmamap_t map; 795 u_int32_t ctrl; 796 int nsegs; 797 798 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 799 if (m == NULL) 800 return (ENOBUFS); 801 m->m_len = m->m_pkthdr.len = MCLBYTES; 802 803 if (bus_dmamap_load_mbuf_sg(sc->bfe_rxmbuf_tag, sc->bfe_rx_sparemap, 804 m, segs, &nsegs, 0) != 0) { 805 m_freem(m); 806 return (ENOBUFS); 807 } 808 809 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); 810 r = &sc->bfe_rx_ring[c]; 811 if (r->bfe_mbuf != NULL) { 812 bus_dmamap_sync(sc->bfe_rxmbuf_tag, r->bfe_map, 813 BUS_DMASYNC_POSTREAD); 814 bus_dmamap_unload(sc->bfe_rxmbuf_tag, r->bfe_map); 815 } 816 map = r->bfe_map; 817 r->bfe_map = sc->bfe_rx_sparemap; 818 sc->bfe_rx_sparemap = map; 819 r->bfe_mbuf = m; 820 821 rx_header = mtod(m, struct bfe_rxheader *); 822 rx_header->len = 0; 823 rx_header->flags = 0; 824 bus_dmamap_sync(sc->bfe_rxmbuf_tag, r->bfe_map, BUS_DMASYNC_PREREAD); 825 826 ctrl = segs[0].ds_len & BFE_DESC_LEN; 827 KASSERT(ctrl > ETHER_MAX_LEN + 32, ("%s: buffer size too small(%d)!", 828 __func__, ctrl)); 829 if (c == BFE_RX_LIST_CNT - 1) 830 ctrl |= BFE_DESC_EOT; 831 r->bfe_ctrl = ctrl; 832 833 d = &sc->bfe_rx_list[c]; 834 d->bfe_ctrl = htole32(ctrl); 835 /* The chip needs all addresses to be added to BFE_PCI_DMA. */ 836 d->bfe_addr = htole32(BFE_ADDR_LO(segs[0].ds_addr) + BFE_PCI_DMA); 837 838 return (0); 839 } 840 841 static void 842 bfe_get_config(struct bfe_softc *sc) 843 { 844 u_int8_t eeprom[128]; 845 846 bfe_read_eeprom(sc, eeprom); 847 848 sc->bfe_enaddr[0] = eeprom[79]; 849 sc->bfe_enaddr[1] = eeprom[78]; 850 sc->bfe_enaddr[2] = eeprom[81]; 851 sc->bfe_enaddr[3] = eeprom[80]; 852 sc->bfe_enaddr[4] = eeprom[83]; 853 sc->bfe_enaddr[5] = eeprom[82]; 854 855 sc->bfe_phyaddr = eeprom[90] & 0x1f; 856 sc->bfe_mdc_port = (eeprom[90] >> 14) & 0x1; 857 858 sc->bfe_core_unit = 0; 859 sc->bfe_dma_offset = BFE_PCI_DMA; 860 } 861 862 static void 863 bfe_pci_setup(struct bfe_softc *sc, u_int32_t cores) 864 { 865 u_int32_t bar_orig, val; 866 867 bar_orig = pci_read_config(sc->bfe_dev, BFE_BAR0_WIN, 4); 868 pci_write_config(sc->bfe_dev, BFE_BAR0_WIN, BFE_REG_PCI, 4); 869 870 val = CSR_READ_4(sc, BFE_SBINTVEC); 871 val |= cores; 872 CSR_WRITE_4(sc, BFE_SBINTVEC, val); 873 874 val = CSR_READ_4(sc, BFE_SSB_PCI_TRANS_2); 875 val |= BFE_SSB_PCI_PREF | BFE_SSB_PCI_BURST; 876 CSR_WRITE_4(sc, BFE_SSB_PCI_TRANS_2, val); 877 878 pci_write_config(sc->bfe_dev, BFE_BAR0_WIN, bar_orig, 4); 879 } 880 881 static void 882 bfe_clear_stats(struct bfe_softc *sc) 883 { 884 uint32_t reg; 885 886 BFE_LOCK_ASSERT(sc); 887 888 CSR_WRITE_4(sc, BFE_MIB_CTRL, BFE_MIB_CLR_ON_READ); 889 for (reg = BFE_TX_GOOD_O; reg <= BFE_TX_PAUSE; reg += 4) 890 CSR_READ_4(sc, reg); 891 for (reg = BFE_RX_GOOD_O; reg <= BFE_RX_NPAUSE; reg += 4) 892 CSR_READ_4(sc, reg); 893 } 894 895 static int 896 bfe_resetphy(struct bfe_softc *sc) 897 { 898 u_int32_t val; 899 900 bfe_writephy(sc, 0, BMCR_RESET); 901 DELAY(100); 902 bfe_readphy(sc, 0, &val); 903 if (val & BMCR_RESET) { 904 device_printf(sc->bfe_dev, "PHY Reset would not complete.\n"); 905 return (ENXIO); 906 } 907 return (0); 908 } 909 910 static void 911 bfe_chip_halt(struct bfe_softc *sc) 912 { 913 BFE_LOCK_ASSERT(sc); 914 /* disable interrupts - not that it actually does..*/ 915 CSR_WRITE_4(sc, BFE_IMASK, 0); 916 CSR_READ_4(sc, BFE_IMASK); 917 918 CSR_WRITE_4(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE); 919 bfe_wait_bit(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE, 200, 1); 920 921 CSR_WRITE_4(sc, BFE_DMARX_CTRL, 0); 922 CSR_WRITE_4(sc, BFE_DMATX_CTRL, 0); 923 DELAY(10); 924 } 925 926 static void 927 bfe_chip_reset(struct bfe_softc *sc) 928 { 929 u_int32_t val; 930 931 BFE_LOCK_ASSERT(sc); 932 933 /* Set the interrupt vector for the enet core */ 934 bfe_pci_setup(sc, BFE_INTVEC_ENET0); 935 936 /* is core up? */ 937 val = CSR_READ_4(sc, BFE_SBTMSLOW) & 938 (BFE_RESET | BFE_REJECT | BFE_CLOCK); 939 if (val == BFE_CLOCK) { 940 /* It is, so shut it down */ 941 CSR_WRITE_4(sc, BFE_RCV_LAZY, 0); 942 CSR_WRITE_4(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE); 943 bfe_wait_bit(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE, 100, 1); 944 CSR_WRITE_4(sc, BFE_DMATX_CTRL, 0); 945 if (CSR_READ_4(sc, BFE_DMARX_STAT) & BFE_STAT_EMASK) 946 bfe_wait_bit(sc, BFE_DMARX_STAT, BFE_STAT_SIDLE, 947 100, 0); 948 CSR_WRITE_4(sc, BFE_DMARX_CTRL, 0); 949 } 950 951 bfe_core_reset(sc); 952 bfe_clear_stats(sc); 953 954 /* 955 * We want the phy registers to be accessible even when 956 * the driver is "downed" so initialize MDC preamble, frequency, 957 * and whether internal or external phy here. 958 */ 959 960 /* 4402 has 62.5Mhz SB clock and internal phy */ 961 CSR_WRITE_4(sc, BFE_MDIO_CTRL, 0x8d); 962 963 /* Internal or external PHY? */ 964 val = CSR_READ_4(sc, BFE_DEVCTRL); 965 if (!(val & BFE_IPP)) 966 CSR_WRITE_4(sc, BFE_ENET_CTRL, BFE_ENET_EPSEL); 967 else if (CSR_READ_4(sc, BFE_DEVCTRL) & BFE_EPR) { 968 BFE_AND(sc, BFE_DEVCTRL, ~BFE_EPR); 969 DELAY(100); 970 } 971 972 /* Enable CRC32 generation and set proper LED modes */ 973 BFE_OR(sc, BFE_MAC_CTRL, BFE_CTRL_CRC32_ENAB | BFE_CTRL_LED); 974 975 /* Reset or clear powerdown control bit */ 976 BFE_AND(sc, BFE_MAC_CTRL, ~BFE_CTRL_PDOWN); 977 978 CSR_WRITE_4(sc, BFE_RCV_LAZY, ((1 << BFE_LAZY_FC_SHIFT) & 979 BFE_LAZY_FC_MASK)); 980 981 /* 982 * We don't want lazy interrupts, so just send them at 983 * the end of a frame, please 984 */ 985 BFE_OR(sc, BFE_RCV_LAZY, 0); 986 987 /* Set max lengths, accounting for VLAN tags */ 988 CSR_WRITE_4(sc, BFE_RXMAXLEN, ETHER_MAX_LEN+32); 989 CSR_WRITE_4(sc, BFE_TXMAXLEN, ETHER_MAX_LEN+32); 990 991 /* Set watermark XXX - magic */ 992 CSR_WRITE_4(sc, BFE_TX_WMARK, 56); 993 994 /* 995 * Initialise DMA channels 996 * - not forgetting dma addresses need to be added to BFE_PCI_DMA 997 */ 998 CSR_WRITE_4(sc, BFE_DMATX_CTRL, BFE_TX_CTRL_ENABLE); 999 CSR_WRITE_4(sc, BFE_DMATX_ADDR, sc->bfe_tx_dma + BFE_PCI_DMA); 1000 1001 CSR_WRITE_4(sc, BFE_DMARX_CTRL, (BFE_RX_OFFSET << BFE_RX_CTRL_ROSHIFT) | 1002 BFE_RX_CTRL_ENABLE); 1003 CSR_WRITE_4(sc, BFE_DMARX_ADDR, sc->bfe_rx_dma + BFE_PCI_DMA); 1004 1005 bfe_resetphy(sc); 1006 bfe_setupphy(sc); 1007 } 1008 1009 static void 1010 bfe_core_disable(struct bfe_softc *sc) 1011 { 1012 if ((CSR_READ_4(sc, BFE_SBTMSLOW)) & BFE_RESET) 1013 return; 1014 1015 /* 1016 * Set reject, wait for it set, then wait for the core to stop 1017 * being busy, then set reset and reject and enable the clocks. 1018 */ 1019 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_REJECT | BFE_CLOCK)); 1020 bfe_wait_bit(sc, BFE_SBTMSLOW, BFE_REJECT, 1000, 0); 1021 bfe_wait_bit(sc, BFE_SBTMSHIGH, BFE_BUSY, 1000, 1); 1022 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_FGC | BFE_CLOCK | BFE_REJECT | 1023 BFE_RESET)); 1024 CSR_READ_4(sc, BFE_SBTMSLOW); 1025 DELAY(10); 1026 /* Leave reset and reject set */ 1027 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_REJECT | BFE_RESET)); 1028 DELAY(10); 1029 } 1030 1031 static void 1032 bfe_core_reset(struct bfe_softc *sc) 1033 { 1034 u_int32_t val; 1035 1036 /* Disable the core */ 1037 bfe_core_disable(sc); 1038 1039 /* and bring it back up */ 1040 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_RESET | BFE_CLOCK | BFE_FGC)); 1041 CSR_READ_4(sc, BFE_SBTMSLOW); 1042 DELAY(10); 1043 1044 /* Chip bug, clear SERR, IB and TO if they are set. */ 1045 if (CSR_READ_4(sc, BFE_SBTMSHIGH) & BFE_SERR) 1046 CSR_WRITE_4(sc, BFE_SBTMSHIGH, 0); 1047 val = CSR_READ_4(sc, BFE_SBIMSTATE); 1048 if (val & (BFE_IBE | BFE_TO)) 1049 CSR_WRITE_4(sc, BFE_SBIMSTATE, val & ~(BFE_IBE | BFE_TO)); 1050 1051 /* Clear reset and allow it to move through the core */ 1052 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_CLOCK | BFE_FGC)); 1053 CSR_READ_4(sc, BFE_SBTMSLOW); 1054 DELAY(10); 1055 1056 /* Leave the clock set */ 1057 CSR_WRITE_4(sc, BFE_SBTMSLOW, BFE_CLOCK); 1058 CSR_READ_4(sc, BFE_SBTMSLOW); 1059 DELAY(10); 1060 } 1061 1062 static void 1063 bfe_cam_write(struct bfe_softc *sc, u_char *data, int index) 1064 { 1065 u_int32_t val; 1066 1067 val = ((u_int32_t) data[2]) << 24; 1068 val |= ((u_int32_t) data[3]) << 16; 1069 val |= ((u_int32_t) data[4]) << 8; 1070 val |= ((u_int32_t) data[5]); 1071 CSR_WRITE_4(sc, BFE_CAM_DATA_LO, val); 1072 val = (BFE_CAM_HI_VALID | 1073 (((u_int32_t) data[0]) << 8) | 1074 (((u_int32_t) data[1]))); 1075 CSR_WRITE_4(sc, BFE_CAM_DATA_HI, val); 1076 CSR_WRITE_4(sc, BFE_CAM_CTRL, (BFE_CAM_WRITE | 1077 ((u_int32_t) index << BFE_CAM_INDEX_SHIFT))); 1078 bfe_wait_bit(sc, BFE_CAM_CTRL, BFE_CAM_BUSY, 10000, 1); 1079 } 1080 1081 static u_int 1082 bfe_write_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt) 1083 { 1084 struct bfe_softc *sc = arg; 1085 1086 bfe_cam_write(sc, LLADDR(sdl), cnt + 1); 1087 1088 return (1); 1089 } 1090 1091 static void 1092 bfe_set_rx_mode(struct bfe_softc *sc) 1093 { 1094 struct ifnet *ifp = sc->bfe_ifp; 1095 u_int32_t val; 1096 1097 BFE_LOCK_ASSERT(sc); 1098 1099 val = CSR_READ_4(sc, BFE_RXCONF); 1100 1101 if (ifp->if_flags & IFF_PROMISC) 1102 val |= BFE_RXCONF_PROMISC; 1103 else 1104 val &= ~BFE_RXCONF_PROMISC; 1105 1106 if (ifp->if_flags & IFF_BROADCAST) 1107 val &= ~BFE_RXCONF_DBCAST; 1108 else 1109 val |= BFE_RXCONF_DBCAST; 1110 1111 CSR_WRITE_4(sc, BFE_CAM_CTRL, 0); 1112 bfe_cam_write(sc, IF_LLADDR(sc->bfe_ifp), 0); 1113 1114 if (ifp->if_flags & IFF_ALLMULTI) 1115 val |= BFE_RXCONF_ALLMULTI; 1116 else { 1117 val &= ~BFE_RXCONF_ALLMULTI; 1118 if_foreach_llmaddr(ifp, bfe_write_maddr, sc); 1119 } 1120 1121 CSR_WRITE_4(sc, BFE_RXCONF, val); 1122 BFE_OR(sc, BFE_CAM_CTRL, BFE_CAM_ENABLE); 1123 } 1124 1125 static void 1126 bfe_dma_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1127 { 1128 struct bfe_dmamap_arg *ctx; 1129 1130 if (error != 0) 1131 return; 1132 1133 KASSERT(nseg == 1, ("%s : %d segments returned!", __func__, nseg)); 1134 1135 ctx = (struct bfe_dmamap_arg *)arg; 1136 ctx->bfe_busaddr = segs[0].ds_addr; 1137 } 1138 1139 static void 1140 bfe_release_resources(struct bfe_softc *sc) 1141 { 1142 1143 if (sc->bfe_intrhand != NULL) 1144 bus_teardown_intr(sc->bfe_dev, sc->bfe_irq, sc->bfe_intrhand); 1145 1146 if (sc->bfe_irq != NULL) 1147 bus_release_resource(sc->bfe_dev, SYS_RES_IRQ, 0, sc->bfe_irq); 1148 1149 if (sc->bfe_res != NULL) 1150 bus_release_resource(sc->bfe_dev, SYS_RES_MEMORY, PCIR_BAR(0), 1151 sc->bfe_res); 1152 1153 if (sc->bfe_ifp != NULL) 1154 if_free(sc->bfe_ifp); 1155 } 1156 1157 static void 1158 bfe_read_eeprom(struct bfe_softc *sc, u_int8_t *data) 1159 { 1160 long i; 1161 u_int16_t *ptr = (u_int16_t *)data; 1162 1163 for(i = 0; i < 128; i += 2) 1164 ptr[i/2] = CSR_READ_4(sc, 4096 + i); 1165 } 1166 1167 static int 1168 bfe_wait_bit(struct bfe_softc *sc, u_int32_t reg, u_int32_t bit, 1169 u_long timeout, const int clear) 1170 { 1171 u_long i; 1172 1173 for (i = 0; i < timeout; i++) { 1174 u_int32_t val = CSR_READ_4(sc, reg); 1175 1176 if (clear && !(val & bit)) 1177 break; 1178 if (!clear && (val & bit)) 1179 break; 1180 DELAY(10); 1181 } 1182 if (i == timeout) { 1183 device_printf(sc->bfe_dev, 1184 "BUG! Timeout waiting for bit %08x of register " 1185 "%x to %s.\n", bit, reg, (clear ? "clear" : "set")); 1186 return (-1); 1187 } 1188 return (0); 1189 } 1190 1191 static int 1192 bfe_readphy(struct bfe_softc *sc, u_int32_t reg, u_int32_t *val) 1193 { 1194 int err; 1195 1196 /* Clear MII ISR */ 1197 CSR_WRITE_4(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII); 1198 CSR_WRITE_4(sc, BFE_MDIO_DATA, (BFE_MDIO_SB_START | 1199 (BFE_MDIO_OP_READ << BFE_MDIO_OP_SHIFT) | 1200 (sc->bfe_phyaddr << BFE_MDIO_PMD_SHIFT) | 1201 (reg << BFE_MDIO_RA_SHIFT) | 1202 (BFE_MDIO_TA_VALID << BFE_MDIO_TA_SHIFT))); 1203 err = bfe_wait_bit(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII, 100, 0); 1204 *val = CSR_READ_4(sc, BFE_MDIO_DATA) & BFE_MDIO_DATA_DATA; 1205 1206 return (err); 1207 } 1208 1209 static int 1210 bfe_writephy(struct bfe_softc *sc, u_int32_t reg, u_int32_t val) 1211 { 1212 int status; 1213 1214 CSR_WRITE_4(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII); 1215 CSR_WRITE_4(sc, BFE_MDIO_DATA, (BFE_MDIO_SB_START | 1216 (BFE_MDIO_OP_WRITE << BFE_MDIO_OP_SHIFT) | 1217 (sc->bfe_phyaddr << BFE_MDIO_PMD_SHIFT) | 1218 (reg << BFE_MDIO_RA_SHIFT) | 1219 (BFE_MDIO_TA_VALID << BFE_MDIO_TA_SHIFT) | 1220 (val & BFE_MDIO_DATA_DATA))); 1221 status = bfe_wait_bit(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII, 100, 0); 1222 1223 return (status); 1224 } 1225 1226 /* 1227 * XXX - I think this is handled by the PHY driver, but it can't hurt to do it 1228 * twice 1229 */ 1230 static int 1231 bfe_setupphy(struct bfe_softc *sc) 1232 { 1233 u_int32_t val; 1234 1235 /* Enable activity LED */ 1236 bfe_readphy(sc, 26, &val); 1237 bfe_writephy(sc, 26, val & 0x7fff); 1238 bfe_readphy(sc, 26, &val); 1239 1240 /* Enable traffic meter LED mode */ 1241 bfe_readphy(sc, 27, &val); 1242 bfe_writephy(sc, 27, val | (1 << 6)); 1243 1244 return (0); 1245 } 1246 1247 static void 1248 bfe_stats_update(struct bfe_softc *sc) 1249 { 1250 struct bfe_hw_stats *stats; 1251 struct ifnet *ifp; 1252 uint32_t mib[BFE_MIB_CNT]; 1253 uint32_t reg, *val; 1254 1255 BFE_LOCK_ASSERT(sc); 1256 1257 val = mib; 1258 CSR_WRITE_4(sc, BFE_MIB_CTRL, BFE_MIB_CLR_ON_READ); 1259 for (reg = BFE_TX_GOOD_O; reg <= BFE_TX_PAUSE; reg += 4) 1260 *val++ = CSR_READ_4(sc, reg); 1261 for (reg = BFE_RX_GOOD_O; reg <= BFE_RX_NPAUSE; reg += 4) 1262 *val++ = CSR_READ_4(sc, reg); 1263 1264 ifp = sc->bfe_ifp; 1265 stats = &sc->bfe_stats; 1266 /* Tx stat. */ 1267 stats->tx_good_octets += mib[MIB_TX_GOOD_O]; 1268 stats->tx_good_frames += mib[MIB_TX_GOOD_P]; 1269 stats->tx_octets += mib[MIB_TX_O]; 1270 stats->tx_frames += mib[MIB_TX_P]; 1271 stats->tx_bcast_frames += mib[MIB_TX_BCAST]; 1272 stats->tx_mcast_frames += mib[MIB_TX_MCAST]; 1273 stats->tx_pkts_64 += mib[MIB_TX_64]; 1274 stats->tx_pkts_65_127 += mib[MIB_TX_65_127]; 1275 stats->tx_pkts_128_255 += mib[MIB_TX_128_255]; 1276 stats->tx_pkts_256_511 += mib[MIB_TX_256_511]; 1277 stats->tx_pkts_512_1023 += mib[MIB_TX_512_1023]; 1278 stats->tx_pkts_1024_max += mib[MIB_TX_1024_MAX]; 1279 stats->tx_jabbers += mib[MIB_TX_JABBER]; 1280 stats->tx_oversize_frames += mib[MIB_TX_OSIZE]; 1281 stats->tx_frag_frames += mib[MIB_TX_FRAG]; 1282 stats->tx_underruns += mib[MIB_TX_URUNS]; 1283 stats->tx_colls += mib[MIB_TX_TCOLS]; 1284 stats->tx_single_colls += mib[MIB_TX_SCOLS]; 1285 stats->tx_multi_colls += mib[MIB_TX_MCOLS]; 1286 stats->tx_excess_colls += mib[MIB_TX_ECOLS]; 1287 stats->tx_late_colls += mib[MIB_TX_LCOLS]; 1288 stats->tx_deferrals += mib[MIB_TX_DEFERED]; 1289 stats->tx_carrier_losts += mib[MIB_TX_CLOST]; 1290 stats->tx_pause_frames += mib[MIB_TX_PAUSE]; 1291 /* Rx stat. */ 1292 stats->rx_good_octets += mib[MIB_RX_GOOD_O]; 1293 stats->rx_good_frames += mib[MIB_RX_GOOD_P]; 1294 stats->rx_octets += mib[MIB_RX_O]; 1295 stats->rx_frames += mib[MIB_RX_P]; 1296 stats->rx_bcast_frames += mib[MIB_RX_BCAST]; 1297 stats->rx_mcast_frames += mib[MIB_RX_MCAST]; 1298 stats->rx_pkts_64 += mib[MIB_RX_64]; 1299 stats->rx_pkts_65_127 += mib[MIB_RX_65_127]; 1300 stats->rx_pkts_128_255 += mib[MIB_RX_128_255]; 1301 stats->rx_pkts_256_511 += mib[MIB_RX_256_511]; 1302 stats->rx_pkts_512_1023 += mib[MIB_RX_512_1023]; 1303 stats->rx_pkts_1024_max += mib[MIB_RX_1024_MAX]; 1304 stats->rx_jabbers += mib[MIB_RX_JABBER]; 1305 stats->rx_oversize_frames += mib[MIB_RX_OSIZE]; 1306 stats->rx_frag_frames += mib[MIB_RX_FRAG]; 1307 stats->rx_missed_frames += mib[MIB_RX_MISS]; 1308 stats->rx_crc_align_errs += mib[MIB_RX_CRCA]; 1309 stats->rx_runts += mib[MIB_RX_USIZE]; 1310 stats->rx_crc_errs += mib[MIB_RX_CRC]; 1311 stats->rx_align_errs += mib[MIB_RX_ALIGN]; 1312 stats->rx_symbol_errs += mib[MIB_RX_SYM]; 1313 stats->rx_pause_frames += mib[MIB_RX_PAUSE]; 1314 stats->rx_control_frames += mib[MIB_RX_NPAUSE]; 1315 1316 /* Update counters in ifnet. */ 1317 if_inc_counter(ifp, IFCOUNTER_OPACKETS, (u_long)mib[MIB_TX_GOOD_P]); 1318 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, (u_long)mib[MIB_TX_TCOLS]); 1319 if_inc_counter(ifp, IFCOUNTER_OERRORS, (u_long)mib[MIB_TX_URUNS] + 1320 (u_long)mib[MIB_TX_ECOLS] + 1321 (u_long)mib[MIB_TX_DEFERED] + 1322 (u_long)mib[MIB_TX_CLOST]); 1323 1324 if_inc_counter(ifp, IFCOUNTER_IPACKETS, (u_long)mib[MIB_RX_GOOD_P]); 1325 1326 if_inc_counter(ifp, IFCOUNTER_IERRORS, mib[MIB_RX_JABBER] + 1327 mib[MIB_RX_MISS] + 1328 mib[MIB_RX_CRCA] + 1329 mib[MIB_RX_USIZE] + 1330 mib[MIB_RX_CRC] + 1331 mib[MIB_RX_ALIGN] + 1332 mib[MIB_RX_SYM]); 1333 } 1334 1335 static void 1336 bfe_txeof(struct bfe_softc *sc) 1337 { 1338 struct bfe_tx_data *r; 1339 struct ifnet *ifp; 1340 int i, chipidx; 1341 1342 BFE_LOCK_ASSERT(sc); 1343 1344 ifp = sc->bfe_ifp; 1345 1346 chipidx = CSR_READ_4(sc, BFE_DMATX_STAT) & BFE_STAT_CDMASK; 1347 chipidx /= sizeof(struct bfe_desc); 1348 1349 i = sc->bfe_tx_cons; 1350 if (i == chipidx) 1351 return; 1352 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, 1353 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1354 /* Go through the mbufs and free those that have been transmitted */ 1355 for (; i != chipidx; BFE_INC(i, BFE_TX_LIST_CNT)) { 1356 r = &sc->bfe_tx_ring[i]; 1357 sc->bfe_tx_cnt--; 1358 if (r->bfe_mbuf == NULL) 1359 continue; 1360 bus_dmamap_sync(sc->bfe_txmbuf_tag, r->bfe_map, 1361 BUS_DMASYNC_POSTWRITE); 1362 bus_dmamap_unload(sc->bfe_txmbuf_tag, r->bfe_map); 1363 1364 m_freem(r->bfe_mbuf); 1365 r->bfe_mbuf = NULL; 1366 } 1367 1368 if (i != sc->bfe_tx_cons) { 1369 /* we freed up some mbufs */ 1370 sc->bfe_tx_cons = i; 1371 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1372 } 1373 1374 if (sc->bfe_tx_cnt == 0) 1375 sc->bfe_watchdog_timer = 0; 1376 } 1377 1378 /* Pass a received packet up the stack */ 1379 static void 1380 bfe_rxeof(struct bfe_softc *sc) 1381 { 1382 struct mbuf *m; 1383 struct ifnet *ifp; 1384 struct bfe_rxheader *rxheader; 1385 struct bfe_rx_data *r; 1386 int cons, prog; 1387 u_int32_t status, current, len, flags; 1388 1389 BFE_LOCK_ASSERT(sc); 1390 cons = sc->bfe_rx_cons; 1391 status = CSR_READ_4(sc, BFE_DMARX_STAT); 1392 current = (status & BFE_STAT_CDMASK) / sizeof(struct bfe_desc); 1393 1394 ifp = sc->bfe_ifp; 1395 1396 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, 1397 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1398 1399 for (prog = 0; current != cons; prog++, 1400 BFE_INC(cons, BFE_RX_LIST_CNT)) { 1401 r = &sc->bfe_rx_ring[cons]; 1402 m = r->bfe_mbuf; 1403 /* 1404 * Rx status should be read from mbuf such that we can't 1405 * delay bus_dmamap_sync(9). This hardware limiation 1406 * results in inefficient mbuf usage as bfe(4) couldn't 1407 * reuse mapped buffer from errored frame. 1408 */ 1409 if (bfe_list_newbuf(sc, cons) != 0) { 1410 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); 1411 bfe_discard_buf(sc, cons); 1412 continue; 1413 } 1414 rxheader = mtod(m, struct bfe_rxheader*); 1415 len = le16toh(rxheader->len); 1416 flags = le16toh(rxheader->flags); 1417 1418 /* Remove CRC bytes. */ 1419 len -= ETHER_CRC_LEN; 1420 1421 /* flag an error and try again */ 1422 if ((len > ETHER_MAX_LEN+32) || (flags & BFE_RX_FLAG_ERRORS)) { 1423 m_freem(m); 1424 continue; 1425 } 1426 1427 /* Make sure to skip header bytes written by hardware. */ 1428 m_adj(m, BFE_RX_OFFSET); 1429 m->m_len = m->m_pkthdr.len = len; 1430 1431 m->m_pkthdr.rcvif = ifp; 1432 BFE_UNLOCK(sc); 1433 (*ifp->if_input)(ifp, m); 1434 BFE_LOCK(sc); 1435 } 1436 1437 if (prog > 0) { 1438 sc->bfe_rx_cons = cons; 1439 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map, 1440 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1441 } 1442 } 1443 1444 static void 1445 bfe_intr(void *xsc) 1446 { 1447 struct bfe_softc *sc = xsc; 1448 struct ifnet *ifp; 1449 u_int32_t istat; 1450 1451 ifp = sc->bfe_ifp; 1452 1453 BFE_LOCK(sc); 1454 1455 istat = CSR_READ_4(sc, BFE_ISTAT); 1456 1457 /* 1458 * Defer unsolicited interrupts - This is necessary because setting the 1459 * chips interrupt mask register to 0 doesn't actually stop the 1460 * interrupts 1461 */ 1462 istat &= BFE_IMASK_DEF; 1463 CSR_WRITE_4(sc, BFE_ISTAT, istat); 1464 CSR_READ_4(sc, BFE_ISTAT); 1465 1466 /* not expecting this interrupt, disregard it */ 1467 if (istat == 0 || (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1468 BFE_UNLOCK(sc); 1469 return; 1470 } 1471 1472 /* A packet was received */ 1473 if (istat & BFE_ISTAT_RX) 1474 bfe_rxeof(sc); 1475 1476 /* A packet was sent */ 1477 if (istat & BFE_ISTAT_TX) 1478 bfe_txeof(sc); 1479 1480 if (istat & BFE_ISTAT_ERRORS) { 1481 if (istat & BFE_ISTAT_DSCE) { 1482 device_printf(sc->bfe_dev, "Descriptor Error\n"); 1483 bfe_stop(sc); 1484 BFE_UNLOCK(sc); 1485 return; 1486 } 1487 1488 if (istat & BFE_ISTAT_DPE) { 1489 device_printf(sc->bfe_dev, 1490 "Descriptor Protocol Error\n"); 1491 bfe_stop(sc); 1492 BFE_UNLOCK(sc); 1493 return; 1494 } 1495 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1496 bfe_init_locked(sc); 1497 } 1498 1499 /* We have packets pending, fire them out */ 1500 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1501 bfe_start_locked(ifp); 1502 1503 BFE_UNLOCK(sc); 1504 } 1505 1506 static int 1507 bfe_encap(struct bfe_softc *sc, struct mbuf **m_head) 1508 { 1509 struct bfe_desc *d; 1510 struct bfe_tx_data *r, *r1; 1511 struct mbuf *m; 1512 bus_dmamap_t map; 1513 bus_dma_segment_t txsegs[BFE_MAXTXSEGS]; 1514 uint32_t cur, si; 1515 int error, i, nsegs; 1516 1517 BFE_LOCK_ASSERT(sc); 1518 1519 M_ASSERTPKTHDR((*m_head)); 1520 1521 si = cur = sc->bfe_tx_prod; 1522 r = &sc->bfe_tx_ring[cur]; 1523 error = bus_dmamap_load_mbuf_sg(sc->bfe_txmbuf_tag, r->bfe_map, *m_head, 1524 txsegs, &nsegs, 0); 1525 if (error == EFBIG) { 1526 m = m_collapse(*m_head, M_NOWAIT, BFE_MAXTXSEGS); 1527 if (m == NULL) { 1528 m_freem(*m_head); 1529 *m_head = NULL; 1530 return (ENOMEM); 1531 } 1532 *m_head = m; 1533 error = bus_dmamap_load_mbuf_sg(sc->bfe_txmbuf_tag, r->bfe_map, 1534 *m_head, txsegs, &nsegs, 0); 1535 if (error != 0) { 1536 m_freem(*m_head); 1537 *m_head = NULL; 1538 return (error); 1539 } 1540 } else if (error != 0) 1541 return (error); 1542 if (nsegs == 0) { 1543 m_freem(*m_head); 1544 *m_head = NULL; 1545 return (EIO); 1546 } 1547 1548 if (sc->bfe_tx_cnt + nsegs > BFE_TX_LIST_CNT - 1) { 1549 bus_dmamap_unload(sc->bfe_txmbuf_tag, r->bfe_map); 1550 return (ENOBUFS); 1551 } 1552 1553 for (i = 0; i < nsegs; i++) { 1554 d = &sc->bfe_tx_list[cur]; 1555 d->bfe_ctrl = htole32(txsegs[i].ds_len & BFE_DESC_LEN); 1556 d->bfe_ctrl |= htole32(BFE_DESC_IOC); 1557 if (cur == BFE_TX_LIST_CNT - 1) 1558 /* 1559 * Tell the chip to wrap to the start of 1560 * the descriptor list. 1561 */ 1562 d->bfe_ctrl |= htole32(BFE_DESC_EOT); 1563 /* The chip needs all addresses to be added to BFE_PCI_DMA. */ 1564 d->bfe_addr = htole32(BFE_ADDR_LO(txsegs[i].ds_addr) + 1565 BFE_PCI_DMA); 1566 BFE_INC(cur, BFE_TX_LIST_CNT); 1567 } 1568 1569 /* Update producer index. */ 1570 sc->bfe_tx_prod = cur; 1571 1572 /* Set EOF on the last descriptor. */ 1573 cur = (cur + BFE_TX_LIST_CNT - 1) % BFE_TX_LIST_CNT; 1574 d = &sc->bfe_tx_list[cur]; 1575 d->bfe_ctrl |= htole32(BFE_DESC_EOF); 1576 1577 /* Lastly set SOF on the first descriptor to avoid races. */ 1578 d = &sc->bfe_tx_list[si]; 1579 d->bfe_ctrl |= htole32(BFE_DESC_SOF); 1580 1581 r1 = &sc->bfe_tx_ring[cur]; 1582 map = r->bfe_map; 1583 r->bfe_map = r1->bfe_map; 1584 r1->bfe_map = map; 1585 r1->bfe_mbuf = *m_head; 1586 sc->bfe_tx_cnt += nsegs; 1587 1588 bus_dmamap_sync(sc->bfe_txmbuf_tag, map, BUS_DMASYNC_PREWRITE); 1589 1590 return (0); 1591 } 1592 1593 /* 1594 * Set up to transmit a packet. 1595 */ 1596 static void 1597 bfe_start(struct ifnet *ifp) 1598 { 1599 BFE_LOCK((struct bfe_softc *)ifp->if_softc); 1600 bfe_start_locked(ifp); 1601 BFE_UNLOCK((struct bfe_softc *)ifp->if_softc); 1602 } 1603 1604 /* 1605 * Set up to transmit a packet. The softc is already locked. 1606 */ 1607 static void 1608 bfe_start_locked(struct ifnet *ifp) 1609 { 1610 struct bfe_softc *sc; 1611 struct mbuf *m_head; 1612 int queued; 1613 1614 sc = ifp->if_softc; 1615 1616 BFE_LOCK_ASSERT(sc); 1617 1618 /* 1619 * Not much point trying to send if the link is down 1620 * or we have nothing to send. 1621 */ 1622 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 1623 IFF_DRV_RUNNING || (sc->bfe_flags & BFE_FLAG_LINK) == 0) 1624 return; 1625 1626 for (queued = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) && 1627 sc->bfe_tx_cnt < BFE_TX_LIST_CNT - 1;) { 1628 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 1629 if (m_head == NULL) 1630 break; 1631 1632 /* 1633 * Pack the data into the tx ring. If we dont have 1634 * enough room, let the chip drain the ring. 1635 */ 1636 if (bfe_encap(sc, &m_head)) { 1637 if (m_head == NULL) 1638 break; 1639 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 1640 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1641 break; 1642 } 1643 1644 queued++; 1645 1646 /* 1647 * If there's a BPF listener, bounce a copy of this frame 1648 * to him. 1649 */ 1650 BPF_MTAP(ifp, m_head); 1651 } 1652 1653 if (queued) { 1654 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map, 1655 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1656 /* Transmit - twice due to apparent hardware bug */ 1657 CSR_WRITE_4(sc, BFE_DMATX_PTR, 1658 sc->bfe_tx_prod * sizeof(struct bfe_desc)); 1659 /* 1660 * XXX It seems the following write is not necessary 1661 * to kick Tx command. What might be required would be 1662 * a way flushing PCI posted write. Reading the register 1663 * back ensures the flush operation. In addition, 1664 * hardware will execute PCI posted write in the long 1665 * run and watchdog timer for the kick command was set 1666 * to 5 seconds. Therefore I think the second write 1667 * access is not necessary or could be replaced with 1668 * read operation. 1669 */ 1670 CSR_WRITE_4(sc, BFE_DMATX_PTR, 1671 sc->bfe_tx_prod * sizeof(struct bfe_desc)); 1672 1673 /* 1674 * Set a timeout in case the chip goes out to lunch. 1675 */ 1676 sc->bfe_watchdog_timer = 5; 1677 } 1678 } 1679 1680 static void 1681 bfe_init(void *xsc) 1682 { 1683 BFE_LOCK((struct bfe_softc *)xsc); 1684 bfe_init_locked(xsc); 1685 BFE_UNLOCK((struct bfe_softc *)xsc); 1686 } 1687 1688 static void 1689 bfe_init_locked(void *xsc) 1690 { 1691 struct bfe_softc *sc = (struct bfe_softc*)xsc; 1692 struct ifnet *ifp = sc->bfe_ifp; 1693 struct mii_data *mii; 1694 1695 BFE_LOCK_ASSERT(sc); 1696 1697 mii = device_get_softc(sc->bfe_miibus); 1698 1699 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1700 return; 1701 1702 bfe_stop(sc); 1703 bfe_chip_reset(sc); 1704 1705 if (bfe_list_rx_init(sc) == ENOBUFS) { 1706 device_printf(sc->bfe_dev, 1707 "%s: Not enough memory for list buffers\n", __func__); 1708 bfe_stop(sc); 1709 return; 1710 } 1711 bfe_list_tx_init(sc); 1712 1713 bfe_set_rx_mode(sc); 1714 1715 /* Enable the chip and core */ 1716 BFE_OR(sc, BFE_ENET_CTRL, BFE_ENET_ENABLE); 1717 /* Enable interrupts */ 1718 CSR_WRITE_4(sc, BFE_IMASK, BFE_IMASK_DEF); 1719 1720 /* Clear link state and change media. */ 1721 sc->bfe_flags &= ~BFE_FLAG_LINK; 1722 mii_mediachg(mii); 1723 1724 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1725 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1726 1727 callout_reset(&sc->bfe_stat_co, hz, bfe_tick, sc); 1728 } 1729 1730 /* 1731 * Set media options. 1732 */ 1733 static int 1734 bfe_ifmedia_upd(struct ifnet *ifp) 1735 { 1736 struct bfe_softc *sc; 1737 struct mii_data *mii; 1738 struct mii_softc *miisc; 1739 int error; 1740 1741 sc = ifp->if_softc; 1742 BFE_LOCK(sc); 1743 1744 mii = device_get_softc(sc->bfe_miibus); 1745 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 1746 PHY_RESET(miisc); 1747 error = mii_mediachg(mii); 1748 BFE_UNLOCK(sc); 1749 1750 return (error); 1751 } 1752 1753 /* 1754 * Report current media status. 1755 */ 1756 static void 1757 bfe_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 1758 { 1759 struct bfe_softc *sc = ifp->if_softc; 1760 struct mii_data *mii; 1761 1762 BFE_LOCK(sc); 1763 mii = device_get_softc(sc->bfe_miibus); 1764 mii_pollstat(mii); 1765 ifmr->ifm_active = mii->mii_media_active; 1766 ifmr->ifm_status = mii->mii_media_status; 1767 BFE_UNLOCK(sc); 1768 } 1769 1770 static int 1771 bfe_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 1772 { 1773 struct bfe_softc *sc = ifp->if_softc; 1774 struct ifreq *ifr = (struct ifreq *) data; 1775 struct mii_data *mii; 1776 int error = 0; 1777 1778 switch (command) { 1779 case SIOCSIFFLAGS: 1780 BFE_LOCK(sc); 1781 if (ifp->if_flags & IFF_UP) { 1782 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1783 bfe_set_rx_mode(sc); 1784 else if ((sc->bfe_flags & BFE_FLAG_DETACH) == 0) 1785 bfe_init_locked(sc); 1786 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1787 bfe_stop(sc); 1788 BFE_UNLOCK(sc); 1789 break; 1790 case SIOCADDMULTI: 1791 case SIOCDELMULTI: 1792 BFE_LOCK(sc); 1793 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1794 bfe_set_rx_mode(sc); 1795 BFE_UNLOCK(sc); 1796 break; 1797 case SIOCGIFMEDIA: 1798 case SIOCSIFMEDIA: 1799 mii = device_get_softc(sc->bfe_miibus); 1800 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 1801 break; 1802 default: 1803 error = ether_ioctl(ifp, command, data); 1804 break; 1805 } 1806 1807 return (error); 1808 } 1809 1810 static void 1811 bfe_watchdog(struct bfe_softc *sc) 1812 { 1813 struct ifnet *ifp; 1814 1815 BFE_LOCK_ASSERT(sc); 1816 1817 if (sc->bfe_watchdog_timer == 0 || --sc->bfe_watchdog_timer) 1818 return; 1819 1820 ifp = sc->bfe_ifp; 1821 1822 device_printf(sc->bfe_dev, "watchdog timeout -- resetting\n"); 1823 1824 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1825 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1826 bfe_init_locked(sc); 1827 1828 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1829 bfe_start_locked(ifp); 1830 } 1831 1832 static void 1833 bfe_tick(void *xsc) 1834 { 1835 struct bfe_softc *sc = xsc; 1836 struct mii_data *mii; 1837 1838 BFE_LOCK_ASSERT(sc); 1839 1840 mii = device_get_softc(sc->bfe_miibus); 1841 mii_tick(mii); 1842 bfe_stats_update(sc); 1843 bfe_watchdog(sc); 1844 callout_reset(&sc->bfe_stat_co, hz, bfe_tick, sc); 1845 } 1846 1847 /* 1848 * Stop the adapter and free any mbufs allocated to the 1849 * RX and TX lists. 1850 */ 1851 static void 1852 bfe_stop(struct bfe_softc *sc) 1853 { 1854 struct ifnet *ifp; 1855 1856 BFE_LOCK_ASSERT(sc); 1857 1858 ifp = sc->bfe_ifp; 1859 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 1860 sc->bfe_flags &= ~BFE_FLAG_LINK; 1861 callout_stop(&sc->bfe_stat_co); 1862 sc->bfe_watchdog_timer = 0; 1863 1864 bfe_chip_halt(sc); 1865 bfe_tx_ring_free(sc); 1866 bfe_rx_ring_free(sc); 1867 } 1868 1869 static int 1870 sysctl_bfe_stats(SYSCTL_HANDLER_ARGS) 1871 { 1872 struct bfe_softc *sc; 1873 struct bfe_hw_stats *stats; 1874 int error, result; 1875 1876 result = -1; 1877 error = sysctl_handle_int(oidp, &result, 0, req); 1878 1879 if (error != 0 || req->newptr == NULL) 1880 return (error); 1881 1882 if (result != 1) 1883 return (error); 1884 1885 sc = (struct bfe_softc *)arg1; 1886 stats = &sc->bfe_stats; 1887 1888 printf("%s statistics:\n", device_get_nameunit(sc->bfe_dev)); 1889 printf("Transmit good octets : %ju\n", 1890 (uintmax_t)stats->tx_good_octets); 1891 printf("Transmit good frames : %ju\n", 1892 (uintmax_t)stats->tx_good_frames); 1893 printf("Transmit octets : %ju\n", 1894 (uintmax_t)stats->tx_octets); 1895 printf("Transmit frames : %ju\n", 1896 (uintmax_t)stats->tx_frames); 1897 printf("Transmit broadcast frames : %ju\n", 1898 (uintmax_t)stats->tx_bcast_frames); 1899 printf("Transmit multicast frames : %ju\n", 1900 (uintmax_t)stats->tx_mcast_frames); 1901 printf("Transmit frames 64 bytes : %ju\n", 1902 (uint64_t)stats->tx_pkts_64); 1903 printf("Transmit frames 65 to 127 bytes : %ju\n", 1904 (uint64_t)stats->tx_pkts_65_127); 1905 printf("Transmit frames 128 to 255 bytes : %ju\n", 1906 (uint64_t)stats->tx_pkts_128_255); 1907 printf("Transmit frames 256 to 511 bytes : %ju\n", 1908 (uint64_t)stats->tx_pkts_256_511); 1909 printf("Transmit frames 512 to 1023 bytes : %ju\n", 1910 (uint64_t)stats->tx_pkts_512_1023); 1911 printf("Transmit frames 1024 to max bytes : %ju\n", 1912 (uint64_t)stats->tx_pkts_1024_max); 1913 printf("Transmit jabber errors : %u\n", stats->tx_jabbers); 1914 printf("Transmit oversized frames : %ju\n", 1915 (uint64_t)stats->tx_oversize_frames); 1916 printf("Transmit fragmented frames : %ju\n", 1917 (uint64_t)stats->tx_frag_frames); 1918 printf("Transmit underruns : %u\n", stats->tx_colls); 1919 printf("Transmit total collisions : %u\n", stats->tx_single_colls); 1920 printf("Transmit single collisions : %u\n", stats->tx_single_colls); 1921 printf("Transmit multiple collisions : %u\n", stats->tx_multi_colls); 1922 printf("Transmit excess collisions : %u\n", stats->tx_excess_colls); 1923 printf("Transmit late collisions : %u\n", stats->tx_late_colls); 1924 printf("Transmit deferrals : %u\n", stats->tx_deferrals); 1925 printf("Transmit carrier losts : %u\n", stats->tx_carrier_losts); 1926 printf("Transmit pause frames : %u\n", stats->tx_pause_frames); 1927 1928 printf("Receive good octets : %ju\n", 1929 (uintmax_t)stats->rx_good_octets); 1930 printf("Receive good frames : %ju\n", 1931 (uintmax_t)stats->rx_good_frames); 1932 printf("Receive octets : %ju\n", 1933 (uintmax_t)stats->rx_octets); 1934 printf("Receive frames : %ju\n", 1935 (uintmax_t)stats->rx_frames); 1936 printf("Receive broadcast frames : %ju\n", 1937 (uintmax_t)stats->rx_bcast_frames); 1938 printf("Receive multicast frames : %ju\n", 1939 (uintmax_t)stats->rx_mcast_frames); 1940 printf("Receive frames 64 bytes : %ju\n", 1941 (uint64_t)stats->rx_pkts_64); 1942 printf("Receive frames 65 to 127 bytes : %ju\n", 1943 (uint64_t)stats->rx_pkts_65_127); 1944 printf("Receive frames 128 to 255 bytes : %ju\n", 1945 (uint64_t)stats->rx_pkts_128_255); 1946 printf("Receive frames 256 to 511 bytes : %ju\n", 1947 (uint64_t)stats->rx_pkts_256_511); 1948 printf("Receive frames 512 to 1023 bytes : %ju\n", 1949 (uint64_t)stats->rx_pkts_512_1023); 1950 printf("Receive frames 1024 to max bytes : %ju\n", 1951 (uint64_t)stats->rx_pkts_1024_max); 1952 printf("Receive jabber errors : %u\n", stats->rx_jabbers); 1953 printf("Receive oversized frames : %ju\n", 1954 (uint64_t)stats->rx_oversize_frames); 1955 printf("Receive fragmented frames : %ju\n", 1956 (uint64_t)stats->rx_frag_frames); 1957 printf("Receive missed frames : %u\n", stats->rx_missed_frames); 1958 printf("Receive CRC align errors : %u\n", stats->rx_crc_align_errs); 1959 printf("Receive undersized frames : %u\n", stats->rx_runts); 1960 printf("Receive CRC errors : %u\n", stats->rx_crc_errs); 1961 printf("Receive align errors : %u\n", stats->rx_align_errs); 1962 printf("Receive symbol errors : %u\n", stats->rx_symbol_errs); 1963 printf("Receive pause frames : %u\n", stats->rx_pause_frames); 1964 printf("Receive control frames : %u\n", stats->rx_control_frames); 1965 1966 return (error); 1967 }
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