1 /* $NetBSD: if_cas.c,v 1.21 2014/03/29 19:28:24 christos Exp $ */ 2 /* $OpenBSD: if_cas.c,v 1.29 2009/11/29 16:19:38 kettenis Exp $ */ 3 4 /* 5 * 6 * Copyright (C) 2007 Mark Kettenis. 7 * Copyright (C) 2001 Eduardo Horvath. 8 * All rights reserved. 9 * 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 */ 33 34 /* 35 * Driver for Sun Cassini ethernet controllers. 36 * 37 * There are basically two variants of this chip: Cassini and 38 * Cassini+. We can distinguish between the two by revision: 0x10 and 39 * up are Cassini+. The most important difference is that Cassini+ 40 * has a second RX descriptor ring. Cassini+ will not work without 41 * configuring that second ring. However, since we don't use it we 42 * don't actually fill the descriptors, and only hand off the first 43 * four to the chip. 44 */ 45 46 #include <sys/cdefs.h> 47 __KERNEL_RCSID(0, "$NetBSD: if_cas.c,v 1.21 2014/03/29 19:28:24 christos Exp $"); 48 49 #ifndef _MODULE 50 #include "opt_inet.h" 51 #endif 52 53 #include <sys/param.h> 54 #include <sys/systm.h> 55 #include <sys/callout.h> 56 #include <sys/mbuf.h> 57 #include <sys/syslog.h> 58 #include <sys/malloc.h> 59 #include <sys/kernel.h> 60 #include <sys/socket.h> 61 #include <sys/ioctl.h> 62 #include <sys/errno.h> 63 #include <sys/device.h> 64 #include <sys/module.h> 65 66 #include <machine/endian.h> 67 68 #include <net/if.h> 69 #include <net/if_dl.h> 70 #include <net/if_media.h> 71 #include <net/if_ether.h> 72 73 #ifdef INET 74 #include <netinet/in.h> 75 #include <netinet/in_systm.h> 76 #include <netinet/in_var.h> 77 #include <netinet/ip.h> 78 #include <netinet/tcp.h> 79 #include <netinet/udp.h> 80 #endif 81 82 #include <net/bpf.h> 83 84 #include <sys/bus.h> 85 #include <sys/intr.h> 86 #include <sys/rnd.h> 87 88 #include <dev/mii/mii.h> 89 #include <dev/mii/miivar.h> 90 #include <dev/mii/mii_bitbang.h> 91 92 #include <dev/pci/pcivar.h> 93 #include <dev/pci/pcireg.h> 94 #include <dev/pci/pcidevs.h> 95 #include <prop/proplib.h> 96 97 #include <dev/pci/if_casreg.h> 98 #include <dev/pci/if_casvar.h> 99 100 #define TRIES 10000 101 102 static bool cas_estintr(struct cas_softc *sc, int); 103 bool cas_shutdown(device_t, int); 104 static bool cas_suspend(device_t, const pmf_qual_t *); 105 static bool cas_resume(device_t, const pmf_qual_t *); 106 static int cas_detach(device_t, int); 107 static void cas_partial_detach(struct cas_softc *, enum cas_attach_stage); 108 109 int cas_match(device_t, cfdata_t, void *); 110 void cas_attach(device_t, device_t, void *); 111 112 113 CFATTACH_DECL3_NEW(cas, sizeof(struct cas_softc), 114 cas_match, cas_attach, cas_detach, NULL, NULL, NULL, 115 DVF_DETACH_SHUTDOWN); 116 117 int cas_pci_enaddr(struct cas_softc *, struct pci_attach_args *, uint8_t *); 118 119 void cas_config(struct cas_softc *, const uint8_t *); 120 void cas_start(struct ifnet *); 121 void cas_stop(struct ifnet *, int); 122 int cas_ioctl(struct ifnet *, u_long, void *); 123 void cas_tick(void *); 124 void cas_watchdog(struct ifnet *); 125 int cas_init(struct ifnet *); 126 void cas_init_regs(struct cas_softc *); 127 int cas_ringsize(int); 128 int cas_cringsize(int); 129 int cas_meminit(struct cas_softc *); 130 void cas_mifinit(struct cas_softc *); 131 int cas_bitwait(struct cas_softc *, bus_space_handle_t, int, 132 u_int32_t, u_int32_t); 133 void cas_reset(struct cas_softc *); 134 int cas_reset_rx(struct cas_softc *); 135 int cas_reset_tx(struct cas_softc *); 136 int cas_disable_rx(struct cas_softc *); 137 int cas_disable_tx(struct cas_softc *); 138 void cas_rxdrain(struct cas_softc *); 139 int cas_add_rxbuf(struct cas_softc *, int idx); 140 void cas_iff(struct cas_softc *); 141 int cas_encap(struct cas_softc *, struct mbuf *, u_int32_t *); 142 143 /* MII methods & callbacks */ 144 int cas_mii_readreg(device_t, int, int); 145 void cas_mii_writereg(device_t, int, int, int); 146 void cas_mii_statchg(struct ifnet *); 147 int cas_pcs_readreg(device_t, int, int); 148 void cas_pcs_writereg(device_t, int, int, int); 149 150 int cas_mediachange(struct ifnet *); 151 void cas_mediastatus(struct ifnet *, struct ifmediareq *); 152 153 int cas_eint(struct cas_softc *, u_int); 154 int cas_rint(struct cas_softc *); 155 int cas_tint(struct cas_softc *, u_int32_t); 156 int cas_pint(struct cas_softc *); 157 int cas_intr(void *); 158 159 #ifdef CAS_DEBUG 160 #define DPRINTF(sc, x) if ((sc)->sc_ethercom.ec_if.if_flags & IFF_DEBUG) \ 161 printf x 162 #else 163 #define DPRINTF(sc, x) /* nothing */ 164 #endif 165 166 int 167 cas_match(device_t parent, cfdata_t cf, void *aux) 168 { 169 struct pci_attach_args *pa = aux; 170 171 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN && 172 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_CASSINI)) 173 return 1; 174 175 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_NS && 176 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_NS_SATURN)) 177 return 1; 178 179 return 0; 180 } 181 182 #define PROMHDR_PTR_DATA 0x18 183 #define PROMDATA_PTR_VPD 0x08 184 #define PROMDATA_DATA2 0x0a 185 186 static const u_int8_t cas_promhdr[] = { 0x55, 0xaa }; 187 static const u_int8_t cas_promdat[] = { 188 'P', 'C', 'I', 'R', 189 PCI_VENDOR_SUN & 0xff, PCI_VENDOR_SUN >> 8, 190 PCI_PRODUCT_SUN_CASSINI & 0xff, PCI_PRODUCT_SUN_CASSINI >> 8 191 }; 192 static const u_int8_t cas_promdat_ns[] = { 193 'P', 'C', 'I', 'R', 194 PCI_VENDOR_NS & 0xff, PCI_VENDOR_NS >> 8, 195 PCI_PRODUCT_NS_SATURN & 0xff, PCI_PRODUCT_NS_SATURN >> 8 196 }; 197 198 static const u_int8_t cas_promdat2[] = { 199 0x18, 0x00, /* structure length */ 200 0x00, /* structure revision */ 201 0x00, /* interface revision */ 202 PCI_SUBCLASS_NETWORK_ETHERNET, /* subclass code */ 203 PCI_CLASS_NETWORK /* class code */ 204 }; 205 206 int 207 cas_pci_enaddr(struct cas_softc *sc, struct pci_attach_args *pa, 208 uint8_t *enaddr) 209 { 210 struct pci_vpd_largeres *res; 211 struct pci_vpd *vpd; 212 bus_space_handle_t romh; 213 bus_space_tag_t romt; 214 bus_size_t romsize = 0; 215 u_int8_t buf[32], *desc; 216 pcireg_t address; 217 int dataoff, vpdoff, len; 218 int rv = -1; 219 220 if (pci_mapreg_map(pa, PCI_MAPREG_ROM, PCI_MAPREG_TYPE_MEM, 0, 221 &romt, &romh, NULL, &romsize)) 222 return (-1); 223 224 address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_START); 225 address |= PCI_MAPREG_ROM_ENABLE; 226 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_START, address); 227 228 bus_space_read_region_1(romt, romh, 0, buf, sizeof(buf)); 229 if (bcmp(buf, cas_promhdr, sizeof(cas_promhdr))) 230 goto fail; 231 232 dataoff = buf[PROMHDR_PTR_DATA] | (buf[PROMHDR_PTR_DATA + 1] << 8); 233 if (dataoff < 0x1c) 234 goto fail; 235 236 bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf)); 237 if ((bcmp(buf, cas_promdat, sizeof(cas_promdat)) && 238 bcmp(buf, cas_promdat_ns, sizeof(cas_promdat_ns))) || 239 bcmp(buf + PROMDATA_DATA2, cas_promdat2, sizeof(cas_promdat2))) 240 goto fail; 241 242 vpdoff = buf[PROMDATA_PTR_VPD] | (buf[PROMDATA_PTR_VPD + 1] << 8); 243 if (vpdoff < 0x1c) 244 goto fail; 245 246 next: 247 bus_space_read_region_1(romt, romh, vpdoff, buf, sizeof(buf)); 248 if (!PCI_VPDRES_ISLARGE(buf[0])) 249 goto fail; 250 251 res = (struct pci_vpd_largeres *)buf; 252 vpdoff += sizeof(*res); 253 254 len = ((res->vpdres_len_msb << 8) + res->vpdres_len_lsb); 255 switch(PCI_VPDRES_LARGE_NAME(res->vpdres_byte0)) { 256 case PCI_VPDRES_TYPE_IDENTIFIER_STRING: 257 /* Skip identifier string. */ 258 vpdoff += len; 259 goto next; 260 261 case PCI_VPDRES_TYPE_VPD: 262 while (len > 0) { 263 bus_space_read_region_1(romt, romh, vpdoff, 264 buf, sizeof(buf)); 265 266 vpd = (struct pci_vpd *)buf; 267 vpdoff += sizeof(*vpd) + vpd->vpd_len; 268 len -= sizeof(*vpd) + vpd->vpd_len; 269 270 /* 271 * We're looking for an "Enhanced" VPD... 272 */ 273 if (vpd->vpd_key0 != 'Z') 274 continue; 275 276 desc = buf + sizeof(*vpd); 277 278 /* 279 * ...which is an instance property... 280 */ 281 if (desc[0] != 'I') 282 continue; 283 desc += 3; 284 285 /* 286 * ...that's a byte array with the proper 287 * length for a MAC address... 288 */ 289 if (desc[0] != 'B' || desc[1] != ETHER_ADDR_LEN) 290 continue; 291 desc += 2; 292 293 /* 294 * ...named "local-mac-address". 295 */ 296 if (strcmp(desc, "local-mac-address") != 0) 297 continue; 298 desc += strlen("local-mac-address") + 1; 299 300 memcpy(enaddr, desc, ETHER_ADDR_LEN); 301 rv = 0; 302 } 303 break; 304 305 default: 306 goto fail; 307 } 308 309 fail: 310 if (romsize != 0) 311 bus_space_unmap(romt, romh, romsize); 312 313 address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM); 314 address &= ~PCI_MAPREG_ROM_ENABLE; 315 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM, address); 316 317 return (rv); 318 } 319 320 void 321 cas_attach(device_t parent, device_t self, void *aux) 322 { 323 struct pci_attach_args *pa = aux; 324 struct cas_softc *sc = device_private(self); 325 prop_data_t data; 326 uint8_t enaddr[ETHER_ADDR_LEN]; 327 328 sc->sc_dev = self; 329 pci_aprint_devinfo(pa, NULL); 330 sc->sc_rev = PCI_REVISION(pa->pa_class); 331 sc->sc_dmatag = pa->pa_dmat; 332 333 #define PCI_CAS_BASEADDR 0x10 334 if (pci_mapreg_map(pa, PCI_CAS_BASEADDR, PCI_MAPREG_TYPE_MEM, 0, 335 &sc->sc_memt, &sc->sc_memh, NULL, &sc->sc_size) != 0) { 336 aprint_error_dev(sc->sc_dev, 337 "unable to map device registers\n"); 338 return; 339 } 340 341 if ((data = prop_dictionary_get(device_properties(sc->sc_dev), 342 "mac-address")) != NULL) 343 memcpy(enaddr, prop_data_data_nocopy(data), ETHER_ADDR_LEN); 344 else if (cas_pci_enaddr(sc, pa, enaddr) != 0) { 345 aprint_error_dev(sc->sc_dev, "no Ethernet address found\n"); 346 memset(enaddr, 0, sizeof(enaddr)); 347 } 348 349 sc->sc_burst = 16; /* XXX */ 350 351 sc->sc_att_stage = CAS_ATT_BACKEND_0; 352 353 if (pci_intr_map(pa, &sc->sc_handle) != 0) { 354 aprint_error_dev(sc->sc_dev, "unable to map interrupt\n"); 355 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_size); 356 return; 357 } 358 sc->sc_pc = pa->pa_pc; 359 if (!cas_estintr(sc, CAS_INTR_PCI)) { 360 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_size); 361 aprint_error_dev(sc->sc_dev, "unable to establish interrupt\n"); 362 return; 363 } 364 365 sc->sc_att_stage = CAS_ATT_BACKEND_1; 366 367 /* 368 * call the main configure 369 */ 370 cas_config(sc, enaddr); 371 372 if (pmf_device_register1(sc->sc_dev, 373 cas_suspend, cas_resume, cas_shutdown)) 374 pmf_class_network_register(sc->sc_dev, &sc->sc_ethercom.ec_if); 375 else 376 aprint_error_dev(sc->sc_dev, 377 "could not establish power handlers\n"); 378 379 sc->sc_att_stage = CAS_ATT_FINISHED; 380 /*FALLTHROUGH*/ 381 } 382 383 /* 384 * cas_config: 385 * 386 * Attach a Cassini interface to the system. 387 */ 388 void 389 cas_config(struct cas_softc *sc, const uint8_t *enaddr) 390 { 391 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 392 struct mii_data *mii = &sc->sc_mii; 393 struct mii_softc *child; 394 int i, error; 395 396 /* Make sure the chip is stopped. */ 397 ifp->if_softc = sc; 398 cas_reset(sc); 399 400 /* 401 * Allocate the control data structures, and create and load the 402 * DMA map for it. 403 */ 404 if ((error = bus_dmamem_alloc(sc->sc_dmatag, 405 sizeof(struct cas_control_data), CAS_PAGE_SIZE, 0, &sc->sc_cdseg, 406 1, &sc->sc_cdnseg, 0)) != 0) { 407 aprint_error_dev(sc->sc_dev, 408 "unable to allocate control data, error = %d\n", 409 error); 410 cas_partial_detach(sc, CAS_ATT_0); 411 } 412 413 /* XXX should map this in with correct endianness */ 414 if ((error = bus_dmamem_map(sc->sc_dmatag, &sc->sc_cdseg, sc->sc_cdnseg, 415 sizeof(struct cas_control_data), (void **)&sc->sc_control_data, 416 BUS_DMA_COHERENT)) != 0) { 417 aprint_error_dev(sc->sc_dev, 418 "unable to map control data, error = %d\n", error); 419 cas_partial_detach(sc, CAS_ATT_1); 420 } 421 422 if ((error = bus_dmamap_create(sc->sc_dmatag, 423 sizeof(struct cas_control_data), 1, 424 sizeof(struct cas_control_data), 0, 0, &sc->sc_cddmamap)) != 0) { 425 aprint_error_dev(sc->sc_dev, 426 "unable to create control data DMA map, error = %d\n", error); 427 cas_partial_detach(sc, CAS_ATT_2); 428 } 429 430 if ((error = bus_dmamap_load(sc->sc_dmatag, sc->sc_cddmamap, 431 sc->sc_control_data, sizeof(struct cas_control_data), NULL, 432 0)) != 0) { 433 aprint_error_dev(sc->sc_dev, 434 "unable to load control data DMA map, error = %d\n", 435 error); 436 cas_partial_detach(sc, CAS_ATT_3); 437 } 438 439 memset(sc->sc_control_data, 0, sizeof(struct cas_control_data)); 440 441 /* 442 * Create the receive buffer DMA maps. 443 */ 444 for (i = 0; i < CAS_NRXDESC; i++) { 445 bus_dma_segment_t seg; 446 char *kva; 447 int rseg; 448 449 if ((error = bus_dmamem_alloc(sc->sc_dmatag, CAS_PAGE_SIZE, 450 CAS_PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 451 aprint_error_dev(sc->sc_dev, 452 "unable to alloc rx DMA mem %d, error = %d\n", 453 i, error); 454 cas_partial_detach(sc, CAS_ATT_5); 455 } 456 sc->sc_rxsoft[i].rxs_dmaseg = seg; 457 458 if ((error = bus_dmamem_map(sc->sc_dmatag, &seg, rseg, 459 CAS_PAGE_SIZE, (void **)&kva, BUS_DMA_NOWAIT)) != 0) { 460 aprint_error_dev(sc->sc_dev, 461 "unable to alloc rx DMA mem %d, error = %d\n", 462 i, error); 463 cas_partial_detach(sc, CAS_ATT_5); 464 } 465 sc->sc_rxsoft[i].rxs_kva = kva; 466 467 if ((error = bus_dmamap_create(sc->sc_dmatag, CAS_PAGE_SIZE, 1, 468 CAS_PAGE_SIZE, 0, 0, &sc->sc_rxsoft[i].rxs_dmamap)) != 0) { 469 aprint_error_dev(sc->sc_dev, 470 "unable to create rx DMA map %d, error = %d\n", 471 i, error); 472 cas_partial_detach(sc, CAS_ATT_5); 473 } 474 475 if ((error = bus_dmamap_load(sc->sc_dmatag, 476 sc->sc_rxsoft[i].rxs_dmamap, kva, CAS_PAGE_SIZE, NULL, 477 BUS_DMA_NOWAIT)) != 0) { 478 aprint_error_dev(sc->sc_dev, 479 "unable to load rx DMA map %d, error = %d\n", 480 i, error); 481 cas_partial_detach(sc, CAS_ATT_5); 482 } 483 } 484 485 /* 486 * Create the transmit buffer DMA maps. 487 */ 488 for (i = 0; i < CAS_NTXDESC; i++) { 489 if ((error = bus_dmamap_create(sc->sc_dmatag, MCLBYTES, 490 CAS_NTXSEGS, MCLBYTES, 0, BUS_DMA_NOWAIT, 491 &sc->sc_txd[i].sd_map)) != 0) { 492 aprint_error_dev(sc->sc_dev, 493 "unable to create tx DMA map %d, error = %d\n", 494 i, error); 495 cas_partial_detach(sc, CAS_ATT_6); 496 } 497 sc->sc_txd[i].sd_mbuf = NULL; 498 } 499 500 /* 501 * From this point forward, the attachment cannot fail. A failure 502 * before this point releases all resources that may have been 503 * allocated. 504 */ 505 506 /* Announce ourselves. */ 507 aprint_normal_dev(sc->sc_dev, "Ethernet address %s\n", 508 ether_sprintf(enaddr)); 509 aprint_naive(": Ethernet controller\n"); 510 511 /* Get RX FIFO size */ 512 sc->sc_rxfifosize = 16 * 1024; 513 514 /* Initialize ifnet structure. */ 515 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 516 ifp->if_softc = sc; 517 ifp->if_flags = 518 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 519 ifp->if_start = cas_start; 520 ifp->if_ioctl = cas_ioctl; 521 ifp->if_watchdog = cas_watchdog; 522 ifp->if_stop = cas_stop; 523 ifp->if_init = cas_init; 524 IFQ_SET_MAXLEN(&ifp->if_snd, CAS_NTXDESC - 1); 525 IFQ_SET_READY(&ifp->if_snd); 526 527 /* Initialize ifmedia structures and MII info */ 528 mii->mii_ifp = ifp; 529 mii->mii_readreg = cas_mii_readreg; 530 mii->mii_writereg = cas_mii_writereg; 531 mii->mii_statchg = cas_mii_statchg; 532 533 ifmedia_init(&mii->mii_media, 0, cas_mediachange, cas_mediastatus); 534 sc->sc_ethercom.ec_mii = mii; 535 536 bus_space_write_4(sc->sc_memt, sc->sc_memh, CAS_MII_DATAPATH_MODE, 0); 537 538 cas_mifinit(sc); 539 540 if (sc->sc_mif_config & CAS_MIF_CONFIG_MDI1) { 541 sc->sc_mif_config |= CAS_MIF_CONFIG_PHY_SEL; 542 bus_space_write_4(sc->sc_memt, sc->sc_memh, 543 CAS_MIF_CONFIG, sc->sc_mif_config); 544 } 545 546 mii_attach(sc->sc_dev, mii, 0xffffffff, MII_PHY_ANY, 547 MII_OFFSET_ANY, 0); 548 549 child = LIST_FIRST(&mii->mii_phys); 550 if (child == NULL && 551 sc->sc_mif_config & (CAS_MIF_CONFIG_MDI0|CAS_MIF_CONFIG_MDI1)) { 552 /* 553 * Try the external PCS SERDES if we didn't find any 554 * MII devices. 555 */ 556 bus_space_write_4(sc->sc_memt, sc->sc_memh, 557 CAS_MII_DATAPATH_MODE, CAS_MII_DATAPATH_SERDES); 558 559 bus_space_write_4(sc->sc_memt, sc->sc_memh, 560 CAS_MII_CONFIG, CAS_MII_CONFIG_ENABLE); 561 562 mii->mii_readreg = cas_pcs_readreg; 563 mii->mii_writereg = cas_pcs_writereg; 564 565 mii_attach(sc->sc_dev, mii, 0xffffffff, MII_PHY_ANY, 566 MII_OFFSET_ANY, MIIF_NOISOLATE); 567 } 568 569 child = LIST_FIRST(&mii->mii_phys); 570 if (child == NULL) { 571 /* No PHY attached */ 572 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL); 573 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL); 574 } else { 575 /* 576 * Walk along the list of attached MII devices and 577 * establish an `MII instance' to `phy number' 578 * mapping. We'll use this mapping in media change 579 * requests to determine which phy to use to program 580 * the MIF configuration register. 581 */ 582 for (; child != NULL; child = LIST_NEXT(child, mii_list)) { 583 /* 584 * Note: we support just two PHYs: the built-in 585 * internal device and an external on the MII 586 * connector. 587 */ 588 if (child->mii_phy > 1 || child->mii_inst > 1) { 589 aprint_error_dev(sc->sc_dev, 590 "cannot accommodate MII device %s" 591 " at phy %d, instance %d\n", 592 device_xname(child->mii_dev), 593 child->mii_phy, child->mii_inst); 594 continue; 595 } 596 597 sc->sc_phys[child->mii_inst] = child->mii_phy; 598 } 599 600 /* 601 * XXX - we can really do the following ONLY if the 602 * phy indeed has the auto negotiation capability!! 603 */ 604 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_AUTO); 605 } 606 607 /* claim 802.1q capability */ 608 sc->sc_ethercom.ec_capabilities |= ETHERCAP_VLAN_MTU; 609 610 /* Attach the interface. */ 611 if_attach(ifp); 612 ether_ifattach(ifp, enaddr); 613 614 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 615 RND_TYPE_NET, 0); 616 617 evcnt_attach_dynamic(&sc->sc_ev_intr, EVCNT_TYPE_INTR, 618 NULL, device_xname(sc->sc_dev), "interrupts"); 619 620 callout_init(&sc->sc_tick_ch, 0); 621 622 return; 623 } 624 625 int 626 cas_detach(device_t self, int flags) 627 { 628 int i; 629 struct cas_softc *sc = device_private(self); 630 bus_space_tag_t t = sc->sc_memt; 631 bus_space_handle_t h = sc->sc_memh; 632 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 633 634 /* 635 * Free any resources we've allocated during the failed attach 636 * attempt. Do this in reverse order and fall through. 637 */ 638 switch (sc->sc_att_stage) { 639 case CAS_ATT_FINISHED: 640 bus_space_write_4(t, h, CAS_INTMASK, ~(uint32_t)0); 641 pmf_device_deregister(self); 642 cas_stop(&sc->sc_ethercom.ec_if, 1); 643 evcnt_detach(&sc->sc_ev_intr); 644 645 rnd_detach_source(&sc->rnd_source); 646 647 ether_ifdetach(ifp); 648 if_detach(ifp); 649 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 650 651 callout_destroy(&sc->sc_tick_ch); 652 653 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 654 655 /*FALLTHROUGH*/ 656 case CAS_ATT_MII: 657 case CAS_ATT_7: 658 case CAS_ATT_6: 659 for (i = 0; i < CAS_NTXDESC; i++) { 660 if (sc->sc_txd[i].sd_map != NULL) 661 bus_dmamap_destroy(sc->sc_dmatag, 662 sc->sc_txd[i].sd_map); 663 } 664 /*FALLTHROUGH*/ 665 case CAS_ATT_5: 666 for (i = 0; i < CAS_NRXDESC; i++) { 667 if (sc->sc_rxsoft[i].rxs_dmamap != NULL) 668 bus_dmamap_unload(sc->sc_dmatag, 669 sc->sc_rxsoft[i].rxs_dmamap); 670 if (sc->sc_rxsoft[i].rxs_dmamap != NULL) 671 bus_dmamap_destroy(sc->sc_dmatag, 672 sc->sc_rxsoft[i].rxs_dmamap); 673 if (sc->sc_rxsoft[i].rxs_kva != NULL) 674 bus_dmamem_unmap(sc->sc_dmatag, 675 sc->sc_rxsoft[i].rxs_kva, CAS_PAGE_SIZE); 676 /* XXX need to check that bus_dmamem_alloc suceeded 677 if (sc->sc_rxsoft[i].rxs_dmaseg != NULL) 678 */ 679 bus_dmamem_free(sc->sc_dmatag, 680 &(sc->sc_rxsoft[i].rxs_dmaseg), 1); 681 } 682 bus_dmamap_unload(sc->sc_dmatag, sc->sc_cddmamap); 683 /*FALLTHROUGH*/ 684 case CAS_ATT_4: 685 case CAS_ATT_3: 686 bus_dmamap_destroy(sc->sc_dmatag, sc->sc_cddmamap); 687 /*FALLTHROUGH*/ 688 case CAS_ATT_2: 689 bus_dmamem_unmap(sc->sc_dmatag, sc->sc_control_data, 690 sizeof(struct cas_control_data)); 691 /*FALLTHROUGH*/ 692 case CAS_ATT_1: 693 bus_dmamem_free(sc->sc_dmatag, &sc->sc_cdseg, sc->sc_cdnseg); 694 /*FALLTHROUGH*/ 695 case CAS_ATT_0: 696 sc->sc_att_stage = CAS_ATT_0; 697 /*FALLTHROUGH*/ 698 case CAS_ATT_BACKEND_2: 699 case CAS_ATT_BACKEND_1: 700 if (sc->sc_ih != NULL) { 701 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 702 sc->sc_ih = NULL; 703 } 704 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_size); 705 /*FALLTHROUGH*/ 706 case CAS_ATT_BACKEND_0: 707 break; 708 } 709 return 0; 710 } 711 712 static void 713 cas_partial_detach(struct cas_softc *sc, enum cas_attach_stage stage) 714 { 715 cfattach_t ca = device_cfattach(sc->sc_dev); 716 717 sc->sc_att_stage = stage; 718 (*ca->ca_detach)(sc->sc_dev, 0); 719 } 720 721 void 722 cas_tick(void *arg) 723 { 724 struct cas_softc *sc = arg; 725 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 726 bus_space_tag_t t = sc->sc_memt; 727 bus_space_handle_t mac = sc->sc_memh; 728 int s; 729 u_int32_t v; 730 731 /* unload collisions counters */ 732 v = bus_space_read_4(t, mac, CAS_MAC_EXCESS_COLL_CNT) + 733 bus_space_read_4(t, mac, CAS_MAC_LATE_COLL_CNT); 734 ifp->if_collisions += v + 735 bus_space_read_4(t, mac, CAS_MAC_NORM_COLL_CNT) + 736 bus_space_read_4(t, mac, CAS_MAC_FIRST_COLL_CNT); 737 ifp->if_oerrors += v; 738 739 /* read error counters */ 740 ifp->if_ierrors += 741 bus_space_read_4(t, mac, CAS_MAC_RX_LEN_ERR_CNT) + 742 bus_space_read_4(t, mac, CAS_MAC_RX_ALIGN_ERR) + 743 bus_space_read_4(t, mac, CAS_MAC_RX_CRC_ERR_CNT) + 744 bus_space_read_4(t, mac, CAS_MAC_RX_CODE_VIOL); 745 746 /* clear the hardware counters */ 747 bus_space_write_4(t, mac, CAS_MAC_NORM_COLL_CNT, 0); 748 bus_space_write_4(t, mac, CAS_MAC_FIRST_COLL_CNT, 0); 749 bus_space_write_4(t, mac, CAS_MAC_EXCESS_COLL_CNT, 0); 750 bus_space_write_4(t, mac, CAS_MAC_LATE_COLL_CNT, 0); 751 bus_space_write_4(t, mac, CAS_MAC_RX_LEN_ERR_CNT, 0); 752 bus_space_write_4(t, mac, CAS_MAC_RX_ALIGN_ERR, 0); 753 bus_space_write_4(t, mac, CAS_MAC_RX_CRC_ERR_CNT, 0); 754 bus_space_write_4(t, mac, CAS_MAC_RX_CODE_VIOL, 0); 755 756 s = splnet(); 757 mii_tick(&sc->sc_mii); 758 splx(s); 759 760 callout_reset(&sc->sc_tick_ch, hz, cas_tick, sc); 761 } 762 763 int 764 cas_bitwait(struct cas_softc *sc, bus_space_handle_t h, int r, 765 u_int32_t clr, u_int32_t set) 766 { 767 int i; 768 u_int32_t reg; 769 770 for (i = TRIES; i--; DELAY(100)) { 771 reg = bus_space_read_4(sc->sc_memt, h, r); 772 if ((reg & clr) == 0 && (reg & set) == set) 773 return (1); 774 } 775 776 return (0); 777 } 778 779 void 780 cas_reset(struct cas_softc *sc) 781 { 782 bus_space_tag_t t = sc->sc_memt; 783 bus_space_handle_t h = sc->sc_memh; 784 int s; 785 786 s = splnet(); 787 DPRINTF(sc, ("%s: cas_reset\n", device_xname(sc->sc_dev))); 788 cas_reset_rx(sc); 789 cas_reset_tx(sc); 790 791 /* Disable interrupts */ 792 bus_space_write_4(sc->sc_memt, sc->sc_memh, CAS_INTMASK, ~(uint32_t)0); 793 794 /* Do a full reset */ 795 bus_space_write_4(t, h, CAS_RESET, 796 CAS_RESET_RX | CAS_RESET_TX | CAS_RESET_BLOCK_PCS); 797 if (!cas_bitwait(sc, h, CAS_RESET, CAS_RESET_RX | CAS_RESET_TX, 0)) 798 aprint_error_dev(sc->sc_dev, "cannot reset device\n"); 799 splx(s); 800 } 801 802 803 /* 804 * cas_rxdrain: 805 * 806 * Drain the receive queue. 807 */ 808 void 809 cas_rxdrain(struct cas_softc *sc) 810 { 811 /* Nothing to do yet. */ 812 } 813 814 /* 815 * Reset the whole thing. 816 */ 817 void 818 cas_stop(struct ifnet *ifp, int disable) 819 { 820 struct cas_softc *sc = (struct cas_softc *)ifp->if_softc; 821 struct cas_sxd *sd; 822 u_int32_t i; 823 824 DPRINTF(sc, ("%s: cas_stop\n", device_xname(sc->sc_dev))); 825 826 callout_stop(&sc->sc_tick_ch); 827 828 /* 829 * Mark the interface down and cancel the watchdog timer. 830 */ 831 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 832 ifp->if_timer = 0; 833 834 mii_down(&sc->sc_mii); 835 836 cas_reset_rx(sc); 837 cas_reset_tx(sc); 838 839 /* 840 * Release any queued transmit buffers. 841 */ 842 for (i = 0; i < CAS_NTXDESC; i++) { 843 sd = &sc->sc_txd[i]; 844 if (sd->sd_mbuf != NULL) { 845 bus_dmamap_sync(sc->sc_dmatag, sd->sd_map, 0, 846 sd->sd_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 847 bus_dmamap_unload(sc->sc_dmatag, sd->sd_map); 848 m_freem(sd->sd_mbuf); 849 sd->sd_mbuf = NULL; 850 } 851 } 852 sc->sc_tx_cnt = sc->sc_tx_prod = sc->sc_tx_cons = 0; 853 854 if (disable) 855 cas_rxdrain(sc); 856 } 857 858 859 /* 860 * Reset the receiver 861 */ 862 int 863 cas_reset_rx(struct cas_softc *sc) 864 { 865 bus_space_tag_t t = sc->sc_memt; 866 bus_space_handle_t h = sc->sc_memh; 867 868 /* 869 * Resetting while DMA is in progress can cause a bus hang, so we 870 * disable DMA first. 871 */ 872 cas_disable_rx(sc); 873 bus_space_write_4(t, h, CAS_RX_CONFIG, 0); 874 /* Wait till it finishes */ 875 if (!cas_bitwait(sc, h, CAS_RX_CONFIG, 1, 0)) 876 aprint_error_dev(sc->sc_dev, "cannot disable rx dma\n"); 877 /* Wait 5ms extra. */ 878 delay(5000); 879 880 /* Finally, reset the ERX */ 881 bus_space_write_4(t, h, CAS_RESET, CAS_RESET_RX); 882 /* Wait till it finishes */ 883 if (!cas_bitwait(sc, h, CAS_RESET, CAS_RESET_RX, 0)) { 884 aprint_error_dev(sc->sc_dev, "cannot reset receiver\n"); 885 return (1); 886 } 887 return (0); 888 } 889 890 891 /* 892 * Reset the transmitter 893 */ 894 int 895 cas_reset_tx(struct cas_softc *sc) 896 { 897 bus_space_tag_t t = sc->sc_memt; 898 bus_space_handle_t h = sc->sc_memh; 899 900 /* 901 * Resetting while DMA is in progress can cause a bus hang, so we 902 * disable DMA first. 903 */ 904 cas_disable_tx(sc); 905 bus_space_write_4(t, h, CAS_TX_CONFIG, 0); 906 /* Wait till it finishes */ 907 if (!cas_bitwait(sc, h, CAS_TX_CONFIG, 1, 0)) 908 aprint_error_dev(sc->sc_dev, "cannot disable tx dma\n"); 909 /* Wait 5ms extra. */ 910 delay(5000); 911 912 /* Finally, reset the ETX */ 913 bus_space_write_4(t, h, CAS_RESET, CAS_RESET_TX); 914 /* Wait till it finishes */ 915 if (!cas_bitwait(sc, h, CAS_RESET, CAS_RESET_TX, 0)) { 916 aprint_error_dev(sc->sc_dev, "cannot reset transmitter\n"); 917 return (1); 918 } 919 return (0); 920 } 921 922 /* 923 * Disable receiver. 924 */ 925 int 926 cas_disable_rx(struct cas_softc *sc) 927 { 928 bus_space_tag_t t = sc->sc_memt; 929 bus_space_handle_t h = sc->sc_memh; 930 u_int32_t cfg; 931 932 /* Flip the enable bit */ 933 cfg = bus_space_read_4(t, h, CAS_MAC_RX_CONFIG); 934 cfg &= ~CAS_MAC_RX_ENABLE; 935 bus_space_write_4(t, h, CAS_MAC_RX_CONFIG, cfg); 936 937 /* Wait for it to finish */ 938 return (cas_bitwait(sc, h, CAS_MAC_RX_CONFIG, CAS_MAC_RX_ENABLE, 0)); 939 } 940 941 /* 942 * Disable transmitter. 943 */ 944 int 945 cas_disable_tx(struct cas_softc *sc) 946 { 947 bus_space_tag_t t = sc->sc_memt; 948 bus_space_handle_t h = sc->sc_memh; 949 u_int32_t cfg; 950 951 /* Flip the enable bit */ 952 cfg = bus_space_read_4(t, h, CAS_MAC_TX_CONFIG); 953 cfg &= ~CAS_MAC_TX_ENABLE; 954 bus_space_write_4(t, h, CAS_MAC_TX_CONFIG, cfg); 955 956 /* Wait for it to finish */ 957 return (cas_bitwait(sc, h, CAS_MAC_TX_CONFIG, CAS_MAC_TX_ENABLE, 0)); 958 } 959 960 /* 961 * Initialize interface. 962 */ 963 int 964 cas_meminit(struct cas_softc *sc) 965 { 966 int i; 967 968 /* 969 * Initialize the transmit descriptor ring. 970 */ 971 for (i = 0; i < CAS_NTXDESC; i++) { 972 sc->sc_txdescs[i].cd_flags = 0; 973 sc->sc_txdescs[i].cd_addr = 0; 974 } 975 CAS_CDTXSYNC(sc, 0, CAS_NTXDESC, 976 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 977 978 /* 979 * Initialize the receive descriptor and receive job 980 * descriptor rings. 981 */ 982 for (i = 0; i < CAS_NRXDESC; i++) 983 CAS_INIT_RXDESC(sc, i, i); 984 sc->sc_rxdptr = 0; 985 sc->sc_rxptr = 0; 986 987 /* 988 * Initialize the receive completion ring. 989 */ 990 for (i = 0; i < CAS_NRXCOMP; i++) { 991 sc->sc_rxcomps[i].cc_word[0] = 0; 992 sc->sc_rxcomps[i].cc_word[1] = 0; 993 sc->sc_rxcomps[i].cc_word[2] = 0; 994 sc->sc_rxcomps[i].cc_word[3] = CAS_DMA_WRITE(CAS_RC3_OWN); 995 CAS_CDRXCSYNC(sc, i, 996 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 997 } 998 999 return (0); 1000 } 1001 1002 int 1003 cas_ringsize(int sz) 1004 { 1005 switch (sz) { 1006 case 32: 1007 return CAS_RING_SZ_32; 1008 case 64: 1009 return CAS_RING_SZ_64; 1010 case 128: 1011 return CAS_RING_SZ_128; 1012 case 256: 1013 return CAS_RING_SZ_256; 1014 case 512: 1015 return CAS_RING_SZ_512; 1016 case 1024: 1017 return CAS_RING_SZ_1024; 1018 case 2048: 1019 return CAS_RING_SZ_2048; 1020 case 4096: 1021 return CAS_RING_SZ_4096; 1022 case 8192: 1023 return CAS_RING_SZ_8192; 1024 default: 1025 aprint_error("cas: invalid Receive Descriptor ring size %d\n", 1026 sz); 1027 return CAS_RING_SZ_32; 1028 } 1029 } 1030 1031 int 1032 cas_cringsize(int sz) 1033 { 1034 int i; 1035 1036 for (i = 0; i < 9; i++) 1037 if (sz == (128 << i)) 1038 return i; 1039 1040 aprint_error("cas: invalid completion ring size %d\n", sz); 1041 return 128; 1042 } 1043 1044 /* 1045 * Initialization of interface; set up initialization block 1046 * and transmit/receive descriptor rings. 1047 */ 1048 int 1049 cas_init(struct ifnet *ifp) 1050 { 1051 struct cas_softc *sc = (struct cas_softc *)ifp->if_softc; 1052 bus_space_tag_t t = sc->sc_memt; 1053 bus_space_handle_t h = sc->sc_memh; 1054 int s; 1055 u_int max_frame_size; 1056 u_int32_t v; 1057 1058 s = splnet(); 1059 1060 DPRINTF(sc, ("%s: cas_init: calling stop\n", device_xname(sc->sc_dev))); 1061 /* 1062 * Initialization sequence. The numbered steps below correspond 1063 * to the sequence outlined in section 6.3.5.1 in the Ethernet 1064 * Channel Engine manual (part of the PCIO manual). 1065 * See also the STP2002-STQ document from Sun Microsystems. 1066 */ 1067 1068 /* step 1 & 2. Reset the Ethernet Channel */ 1069 cas_stop(ifp, 0); 1070 cas_reset(sc); 1071 DPRINTF(sc, ("%s: cas_init: restarting\n", device_xname(sc->sc_dev))); 1072 1073 /* Re-initialize the MIF */ 1074 cas_mifinit(sc); 1075 1076 /* step 3. Setup data structures in host memory */ 1077 cas_meminit(sc); 1078 1079 /* step 4. TX MAC registers & counters */ 1080 cas_init_regs(sc); 1081 max_frame_size = ETHER_MAX_LEN + ETHER_VLAN_ENCAP_LEN; 1082 v = (max_frame_size) | (0x2000 << 16) /* Burst size */; 1083 bus_space_write_4(t, h, CAS_MAC_MAC_MAX_FRAME, v); 1084 1085 /* step 5. RX MAC registers & counters */ 1086 cas_iff(sc); 1087 1088 /* step 6 & 7. Program Descriptor Ring Base Addresses */ 1089 KASSERT((CAS_CDTXADDR(sc, 0) & 0x1fff) == 0); 1090 bus_space_write_4(t, h, CAS_TX_RING_PTR_HI, 1091 (((uint64_t)CAS_CDTXADDR(sc,0)) >> 32)); 1092 bus_space_write_4(t, h, CAS_TX_RING_PTR_LO, CAS_CDTXADDR(sc, 0)); 1093 1094 KASSERT((CAS_CDRXADDR(sc, 0) & 0x1fff) == 0); 1095 bus_space_write_4(t, h, CAS_RX_DRING_PTR_HI, 1096 (((uint64_t)CAS_CDRXADDR(sc,0)) >> 32)); 1097 bus_space_write_4(t, h, CAS_RX_DRING_PTR_LO, CAS_CDRXADDR(sc, 0)); 1098 1099 KASSERT((CAS_CDRXCADDR(sc, 0) & 0x1fff) == 0); 1100 bus_space_write_4(t, h, CAS_RX_CRING_PTR_HI, 1101 (((uint64_t)CAS_CDRXCADDR(sc,0)) >> 32)); 1102 bus_space_write_4(t, h, CAS_RX_CRING_PTR_LO, CAS_CDRXCADDR(sc, 0)); 1103 1104 if (CAS_PLUS(sc)) { 1105 KASSERT((CAS_CDRXADDR2(sc, 0) & 0x1fff) == 0); 1106 bus_space_write_4(t, h, CAS_RX_DRING_PTR_HI2, 1107 (((uint64_t)CAS_CDRXADDR2(sc,0)) >> 32)); 1108 bus_space_write_4(t, h, CAS_RX_DRING_PTR_LO2, 1109 CAS_CDRXADDR2(sc, 0)); 1110 } 1111 1112 /* step 8. Global Configuration & Interrupt Mask */ 1113 cas_estintr(sc, CAS_INTR_REG); 1114 1115 /* step 9. ETX Configuration: use mostly default values */ 1116 1117 /* Enable DMA */ 1118 v = cas_ringsize(CAS_NTXDESC /*XXX*/) << 10; 1119 bus_space_write_4(t, h, CAS_TX_CONFIG, 1120 v|CAS_TX_CONFIG_TXDMA_EN|(1<<24)|(1<<29)); 1121 bus_space_write_4(t, h, CAS_TX_KICK, 0); 1122 1123 /* step 10. ERX Configuration */ 1124 1125 /* Encode Receive Descriptor ring size */ 1126 v = cas_ringsize(CAS_NRXDESC) << CAS_RX_CONFIG_RXDRNG_SZ_SHIFT; 1127 if (CAS_PLUS(sc)) 1128 v |= cas_ringsize(32) << CAS_RX_CONFIG_RXDRNG2_SZ_SHIFT; 1129 1130 /* Encode Receive Completion ring size */ 1131 v |= cas_cringsize(CAS_NRXCOMP) << CAS_RX_CONFIG_RXCRNG_SZ_SHIFT; 1132 1133 /* Enable DMA */ 1134 bus_space_write_4(t, h, CAS_RX_CONFIG, 1135 v|(2<<CAS_RX_CONFIG_FBOFF_SHFT)|CAS_RX_CONFIG_RXDMA_EN); 1136 1137 /* 1138 * The following value is for an OFF Threshold of about 3/4 full 1139 * and an ON Threshold of 1/4 full. 1140 */ 1141 bus_space_write_4(t, h, CAS_RX_PAUSE_THRESH, 1142 (3 * sc->sc_rxfifosize / 256) | 1143 ((sc->sc_rxfifosize / 256) << 12)); 1144 bus_space_write_4(t, h, CAS_RX_BLANKING, (6 << 12) | 6); 1145 1146 /* step 11. Configure Media */ 1147 mii_ifmedia_change(&sc->sc_mii); 1148 1149 /* step 12. RX_MAC Configuration Register */ 1150 v = bus_space_read_4(t, h, CAS_MAC_RX_CONFIG); 1151 v |= CAS_MAC_RX_ENABLE | CAS_MAC_RX_STRIP_CRC; 1152 bus_space_write_4(t, h, CAS_MAC_RX_CONFIG, v); 1153 1154 /* step 14. Issue Transmit Pending command */ 1155 1156 /* step 15. Give the receiver a swift kick */ 1157 bus_space_write_4(t, h, CAS_RX_KICK, CAS_NRXDESC-4); 1158 if (CAS_PLUS(sc)) 1159 bus_space_write_4(t, h, CAS_RX_KICK2, 4); 1160 1161 /* Start the one second timer. */ 1162 callout_reset(&sc->sc_tick_ch, hz, cas_tick, sc); 1163 1164 ifp->if_flags |= IFF_RUNNING; 1165 ifp->if_flags &= ~IFF_OACTIVE; 1166 ifp->if_timer = 0; 1167 splx(s); 1168 1169 return (0); 1170 } 1171 1172 void 1173 cas_init_regs(struct cas_softc *sc) 1174 { 1175 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1176 bus_space_tag_t t = sc->sc_memt; 1177 bus_space_handle_t h = sc->sc_memh; 1178 const u_char *laddr = CLLADDR(ifp->if_sadl); 1179 u_int32_t v, r; 1180 1181 /* These regs are not cleared on reset */ 1182 sc->sc_inited = 0; 1183 if (!sc->sc_inited) { 1184 /* Load recommended values */ 1185 bus_space_write_4(t, h, CAS_MAC_IPG0, 0x00); 1186 bus_space_write_4(t, h, CAS_MAC_IPG1, 0x08); 1187 bus_space_write_4(t, h, CAS_MAC_IPG2, 0x04); 1188 1189 bus_space_write_4(t, h, CAS_MAC_MAC_MIN_FRAME, ETHER_MIN_LEN); 1190 /* Max frame and max burst size */ 1191 v = ETHER_MAX_LEN | (0x2000 << 16) /* Burst size */; 1192 bus_space_write_4(t, h, CAS_MAC_MAC_MAX_FRAME, v); 1193 1194 bus_space_write_4(t, h, CAS_MAC_PREAMBLE_LEN, 0x07); 1195 bus_space_write_4(t, h, CAS_MAC_JAM_SIZE, 0x04); 1196 bus_space_write_4(t, h, CAS_MAC_ATTEMPT_LIMIT, 0x10); 1197 bus_space_write_4(t, h, CAS_MAC_CONTROL_TYPE, 0x8088); 1198 bus_space_write_4(t, h, CAS_MAC_RANDOM_SEED, 1199 ((laddr[5]<<8)|laddr[4])&0x3ff); 1200 1201 /* Secondary MAC addresses set to 0:0:0:0:0:0 */ 1202 for (r = CAS_MAC_ADDR3; r < CAS_MAC_ADDR42; r += 4) 1203 bus_space_write_4(t, h, r, 0); 1204 1205 /* MAC control addr set to 0:1:c2:0:1:80 */ 1206 bus_space_write_4(t, h, CAS_MAC_ADDR42, 0x0001); 1207 bus_space_write_4(t, h, CAS_MAC_ADDR43, 0xc200); 1208 bus_space_write_4(t, h, CAS_MAC_ADDR44, 0x0180); 1209 1210 /* MAC filter addr set to 0:0:0:0:0:0 */ 1211 bus_space_write_4(t, h, CAS_MAC_ADDR_FILTER0, 0); 1212 bus_space_write_4(t, h, CAS_MAC_ADDR_FILTER1, 0); 1213 bus_space_write_4(t, h, CAS_MAC_ADDR_FILTER2, 0); 1214 1215 bus_space_write_4(t, h, CAS_MAC_ADR_FLT_MASK1_2, 0); 1216 bus_space_write_4(t, h, CAS_MAC_ADR_FLT_MASK0, 0); 1217 1218 /* Hash table initialized to 0 */ 1219 for (r = CAS_MAC_HASH0; r <= CAS_MAC_HASH15; r += 4) 1220 bus_space_write_4(t, h, r, 0); 1221 1222 sc->sc_inited = 1; 1223 } 1224 1225 /* Counters need to be zeroed */ 1226 bus_space_write_4(t, h, CAS_MAC_NORM_COLL_CNT, 0); 1227 bus_space_write_4(t, h, CAS_MAC_FIRST_COLL_CNT, 0); 1228 bus_space_write_4(t, h, CAS_MAC_EXCESS_COLL_CNT, 0); 1229 bus_space_write_4(t, h, CAS_MAC_LATE_COLL_CNT, 0); 1230 bus_space_write_4(t, h, CAS_MAC_DEFER_TMR_CNT, 0); 1231 bus_space_write_4(t, h, CAS_MAC_PEAK_ATTEMPTS, 0); 1232 bus_space_write_4(t, h, CAS_MAC_RX_FRAME_COUNT, 0); 1233 bus_space_write_4(t, h, CAS_MAC_RX_LEN_ERR_CNT, 0); 1234 bus_space_write_4(t, h, CAS_MAC_RX_ALIGN_ERR, 0); 1235 bus_space_write_4(t, h, CAS_MAC_RX_CRC_ERR_CNT, 0); 1236 bus_space_write_4(t, h, CAS_MAC_RX_CODE_VIOL, 0); 1237 1238 /* Un-pause stuff */ 1239 bus_space_write_4(t, h, CAS_MAC_SEND_PAUSE_CMD, 0); 1240 1241 /* 1242 * Set the station address. 1243 */ 1244 bus_space_write_4(t, h, CAS_MAC_ADDR0, (laddr[4]<<8) | laddr[5]); 1245 bus_space_write_4(t, h, CAS_MAC_ADDR1, (laddr[2]<<8) | laddr[3]); 1246 bus_space_write_4(t, h, CAS_MAC_ADDR2, (laddr[0]<<8) | laddr[1]); 1247 } 1248 1249 /* 1250 * Receive interrupt. 1251 */ 1252 int 1253 cas_rint(struct cas_softc *sc) 1254 { 1255 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1256 bus_space_tag_t t = sc->sc_memt; 1257 bus_space_handle_t h = sc->sc_memh; 1258 struct cas_rxsoft *rxs; 1259 struct mbuf *m; 1260 u_int64_t word[4]; 1261 int len, off, idx; 1262 int i, skip; 1263 void *cp; 1264 1265 for (i = sc->sc_rxptr;; i = CAS_NEXTRX(i + skip)) { 1266 CAS_CDRXCSYNC(sc, i, 1267 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1268 1269 word[0] = CAS_DMA_READ(sc->sc_rxcomps[i].cc_word[0]); 1270 word[1] = CAS_DMA_READ(sc->sc_rxcomps[i].cc_word[1]); 1271 word[2] = CAS_DMA_READ(sc->sc_rxcomps[i].cc_word[2]); 1272 word[3] = CAS_DMA_READ(sc->sc_rxcomps[i].cc_word[3]); 1273 1274 /* Stop if the hardware still owns the descriptor. */ 1275 if ((word[0] & CAS_RC0_TYPE) == 0 || word[3] & CAS_RC3_OWN) 1276 break; 1277 1278 len = CAS_RC1_HDR_LEN(word[1]); 1279 if (len > 0) { 1280 off = CAS_RC1_HDR_OFF(word[1]); 1281 idx = CAS_RC1_HDR_IDX(word[1]); 1282 rxs = &sc->sc_rxsoft[idx]; 1283 1284 DPRINTF(sc, ("hdr at idx %d, off %d, len %d\n", 1285 idx, off, len)); 1286 1287 bus_dmamap_sync(sc->sc_dmatag, rxs->rxs_dmamap, 0, 1288 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1289 1290 cp = rxs->rxs_kva + off * 256 + ETHER_ALIGN; 1291 m = m_devget(cp, len, 0, ifp, NULL); 1292 1293 if (word[0] & CAS_RC0_RELEASE_HDR) 1294 cas_add_rxbuf(sc, idx); 1295 1296 if (m != NULL) { 1297 1298 /* 1299 * Pass this up to any BPF listeners, but only 1300 * pass it up the stack if its for us. 1301 */ 1302 bpf_mtap(ifp, m); 1303 1304 ifp->if_ipackets++; 1305 m->m_pkthdr.csum_flags = 0; 1306 (*ifp->if_input)(ifp, m); 1307 } else 1308 ifp->if_ierrors++; 1309 } 1310 1311 len = CAS_RC0_DATA_LEN(word[0]); 1312 if (len > 0) { 1313 off = CAS_RC0_DATA_OFF(word[0]); 1314 idx = CAS_RC0_DATA_IDX(word[0]); 1315 rxs = &sc->sc_rxsoft[idx]; 1316 1317 DPRINTF(sc, ("data at idx %d, off %d, len %d\n", 1318 idx, off, len)); 1319 1320 bus_dmamap_sync(sc->sc_dmatag, rxs->rxs_dmamap, 0, 1321 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1322 1323 /* XXX We should not be copying the packet here. */ 1324 cp = rxs->rxs_kva + off + ETHER_ALIGN; 1325 m = m_devget(cp, len, 0, ifp, NULL); 1326 1327 if (word[0] & CAS_RC0_RELEASE_DATA) 1328 cas_add_rxbuf(sc, idx); 1329 1330 if (m != NULL) { 1331 /* 1332 * Pass this up to any BPF listeners, but only 1333 * pass it up the stack if its for us. 1334 */ 1335 bpf_mtap(ifp, m); 1336 1337 ifp->if_ipackets++; 1338 m->m_pkthdr.csum_flags = 0; 1339 (*ifp->if_input)(ifp, m); 1340 } else 1341 ifp->if_ierrors++; 1342 } 1343 1344 if (word[0] & CAS_RC0_SPLIT) 1345 aprint_error_dev(sc->sc_dev, "split packet\n"); 1346 1347 skip = CAS_RC0_SKIP(word[0]); 1348 } 1349 1350 while (sc->sc_rxptr != i) { 1351 sc->sc_rxcomps[sc->sc_rxptr].cc_word[0] = 0; 1352 sc->sc_rxcomps[sc->sc_rxptr].cc_word[1] = 0; 1353 sc->sc_rxcomps[sc->sc_rxptr].cc_word[2] = 0; 1354 sc->sc_rxcomps[sc->sc_rxptr].cc_word[3] = 1355 CAS_DMA_WRITE(CAS_RC3_OWN); 1356 CAS_CDRXCSYNC(sc, sc->sc_rxptr, 1357 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1358 1359 sc->sc_rxptr = CAS_NEXTRX(sc->sc_rxptr); 1360 } 1361 1362 bus_space_write_4(t, h, CAS_RX_COMP_TAIL, sc->sc_rxptr); 1363 1364 DPRINTF(sc, ("cas_rint: done sc->rxptr %d, complete %d\n", 1365 sc->sc_rxptr, bus_space_read_4(t, h, CAS_RX_COMPLETION))); 1366 1367 return (1); 1368 } 1369 1370 /* 1371 * cas_add_rxbuf: 1372 * 1373 * Add a receive buffer to the indicated descriptor. 1374 */ 1375 int 1376 cas_add_rxbuf(struct cas_softc *sc, int idx) 1377 { 1378 bus_space_tag_t t = sc->sc_memt; 1379 bus_space_handle_t h = sc->sc_memh; 1380 1381 CAS_INIT_RXDESC(sc, sc->sc_rxdptr, idx); 1382 1383 if ((sc->sc_rxdptr % 4) == 0) 1384 bus_space_write_4(t, h, CAS_RX_KICK, sc->sc_rxdptr); 1385 1386 if (++sc->sc_rxdptr == CAS_NRXDESC) 1387 sc->sc_rxdptr = 0; 1388 1389 return (0); 1390 } 1391 1392 int 1393 cas_eint(struct cas_softc *sc, u_int status) 1394 { 1395 char bits[128]; 1396 if ((status & CAS_INTR_MIF) != 0) { 1397 DPRINTF(sc, ("%s: link status changed\n", 1398 device_xname(sc->sc_dev))); 1399 return (1); 1400 } 1401 1402 snprintb(bits, sizeof(bits), CAS_INTR_BITS, status); 1403 printf("%s: status=%s\n", device_xname(sc->sc_dev), bits); 1404 return (1); 1405 } 1406 1407 int 1408 cas_pint(struct cas_softc *sc) 1409 { 1410 bus_space_tag_t t = sc->sc_memt; 1411 bus_space_handle_t seb = sc->sc_memh; 1412 u_int32_t status; 1413 1414 status = bus_space_read_4(t, seb, CAS_MII_INTERRUP_STATUS); 1415 status |= bus_space_read_4(t, seb, CAS_MII_INTERRUP_STATUS); 1416 #ifdef CAS_DEBUG 1417 if (status) 1418 printf("%s: link status changed\n", device_xname(sc->sc_dev)); 1419 #endif 1420 return (1); 1421 } 1422 1423 int 1424 cas_intr(void *v) 1425 { 1426 struct cas_softc *sc = (struct cas_softc *)v; 1427 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1428 bus_space_tag_t t = sc->sc_memt; 1429 bus_space_handle_t seb = sc->sc_memh; 1430 u_int32_t status; 1431 int r = 0; 1432 #ifdef CAS_DEBUG 1433 char bits[128]; 1434 #endif 1435 1436 sc->sc_ev_intr.ev_count++; 1437 1438 status = bus_space_read_4(t, seb, CAS_STATUS); 1439 #ifdef CAS_DEBUG 1440 snprintb(bits, sizeof(bits), CAS_INTR_BITS, status); 1441 #endif 1442 DPRINTF(sc, ("%s: cas_intr: cplt %x status %s\n", 1443 device_xname(sc->sc_dev), (status>>19), bits)); 1444 1445 if ((status & CAS_INTR_PCS) != 0) 1446 r |= cas_pint(sc); 1447 1448 if ((status & (CAS_INTR_TX_TAG_ERR | CAS_INTR_RX_TAG_ERR | 1449 CAS_INTR_RX_COMP_FULL | CAS_INTR_BERR)) != 0) 1450 r |= cas_eint(sc, status); 1451 1452 if ((status & (CAS_INTR_TX_EMPTY | CAS_INTR_TX_INTME)) != 0) 1453 r |= cas_tint(sc, status); 1454 1455 if ((status & (CAS_INTR_RX_DONE | CAS_INTR_RX_NOBUF)) != 0) 1456 r |= cas_rint(sc); 1457 1458 /* We should eventually do more than just print out error stats. */ 1459 if (status & CAS_INTR_TX_MAC) { 1460 int txstat = bus_space_read_4(t, seb, CAS_MAC_TX_STATUS); 1461 #ifdef CAS_DEBUG 1462 if (txstat & ~CAS_MAC_TX_XMIT_DONE) 1463 printf("%s: MAC tx fault, status %x\n", 1464 device_xname(sc->sc_dev), txstat); 1465 #endif 1466 if (txstat & (CAS_MAC_TX_UNDERRUN | CAS_MAC_TX_PKT_TOO_LONG)) 1467 cas_init(ifp); 1468 } 1469 if (status & CAS_INTR_RX_MAC) { 1470 int rxstat = bus_space_read_4(t, seb, CAS_MAC_RX_STATUS); 1471 #ifdef CAS_DEBUG 1472 if (rxstat & ~CAS_MAC_RX_DONE) 1473 printf("%s: MAC rx fault, status %x\n", 1474 device_xname(sc->sc_dev), rxstat); 1475 #endif 1476 /* 1477 * On some chip revisions CAS_MAC_RX_OVERFLOW happen often 1478 * due to a silicon bug so handle them silently. 1479 */ 1480 if (rxstat & CAS_MAC_RX_OVERFLOW) { 1481 ifp->if_ierrors++; 1482 cas_init(ifp); 1483 } 1484 #ifdef CAS_DEBUG 1485 else if (rxstat & ~(CAS_MAC_RX_DONE | CAS_MAC_RX_FRAME_CNT)) 1486 printf("%s: MAC rx fault, status %x\n", 1487 device_xname(sc->sc_dev), rxstat); 1488 #endif 1489 } 1490 rnd_add_uint32(&sc->rnd_source, status); 1491 return (r); 1492 } 1493 1494 1495 void 1496 cas_watchdog(struct ifnet *ifp) 1497 { 1498 struct cas_softc *sc = ifp->if_softc; 1499 1500 DPRINTF(sc, ("cas_watchdog: CAS_RX_CONFIG %x CAS_MAC_RX_STATUS %x " 1501 "CAS_MAC_RX_CONFIG %x\n", 1502 bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_RX_CONFIG), 1503 bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_MAC_RX_STATUS), 1504 bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_MAC_RX_CONFIG))); 1505 1506 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 1507 ++ifp->if_oerrors; 1508 1509 /* Try to get more packets going. */ 1510 cas_init(ifp); 1511 } 1512 1513 /* 1514 * Initialize the MII Management Interface 1515 */ 1516 void 1517 cas_mifinit(struct cas_softc *sc) 1518 { 1519 bus_space_tag_t t = sc->sc_memt; 1520 bus_space_handle_t mif = sc->sc_memh; 1521 1522 /* Configure the MIF in frame mode */ 1523 sc->sc_mif_config = bus_space_read_4(t, mif, CAS_MIF_CONFIG); 1524 sc->sc_mif_config &= ~CAS_MIF_CONFIG_BB_ENA; 1525 bus_space_write_4(t, mif, CAS_MIF_CONFIG, sc->sc_mif_config); 1526 } 1527 1528 /* 1529 * MII interface 1530 * 1531 * The Cassini MII interface supports at least three different operating modes: 1532 * 1533 * Bitbang mode is implemented using data, clock and output enable registers. 1534 * 1535 * Frame mode is implemented by loading a complete frame into the frame 1536 * register and polling the valid bit for completion. 1537 * 1538 * Polling mode uses the frame register but completion is indicated by 1539 * an interrupt. 1540 * 1541 */ 1542 int 1543 cas_mii_readreg(device_t self, int phy, int reg) 1544 { 1545 struct cas_softc *sc = device_private(self); 1546 bus_space_tag_t t = sc->sc_memt; 1547 bus_space_handle_t mif = sc->sc_memh; 1548 int n; 1549 u_int32_t v; 1550 1551 #ifdef CAS_DEBUG 1552 if (sc->sc_debug) 1553 printf("cas_mii_readreg: phy %d reg %d\n", phy, reg); 1554 #endif 1555 1556 /* Construct the frame command */ 1557 v = (reg << CAS_MIF_REG_SHIFT) | (phy << CAS_MIF_PHY_SHIFT) | 1558 CAS_MIF_FRAME_READ; 1559 1560 bus_space_write_4(t, mif, CAS_MIF_FRAME, v); 1561 for (n = 0; n < 100; n++) { 1562 DELAY(1); 1563 v = bus_space_read_4(t, mif, CAS_MIF_FRAME); 1564 if (v & CAS_MIF_FRAME_TA0) 1565 return (v & CAS_MIF_FRAME_DATA); 1566 } 1567 1568 printf("%s: mii_read timeout\n", device_xname(sc->sc_dev)); 1569 return (0); 1570 } 1571 1572 void 1573 cas_mii_writereg(device_t self, int phy, int reg, int val) 1574 { 1575 struct cas_softc *sc = device_private(self); 1576 bus_space_tag_t t = sc->sc_memt; 1577 bus_space_handle_t mif = sc->sc_memh; 1578 int n; 1579 u_int32_t v; 1580 1581 #ifdef CAS_DEBUG 1582 if (sc->sc_debug) 1583 printf("cas_mii_writereg: phy %d reg %d val %x\n", 1584 phy, reg, val); 1585 #endif 1586 1587 /* Construct the frame command */ 1588 v = CAS_MIF_FRAME_WRITE | 1589 (phy << CAS_MIF_PHY_SHIFT) | 1590 (reg << CAS_MIF_REG_SHIFT) | 1591 (val & CAS_MIF_FRAME_DATA); 1592 1593 bus_space_write_4(t, mif, CAS_MIF_FRAME, v); 1594 for (n = 0; n < 100; n++) { 1595 DELAY(1); 1596 v = bus_space_read_4(t, mif, CAS_MIF_FRAME); 1597 if (v & CAS_MIF_FRAME_TA0) 1598 return; 1599 } 1600 1601 printf("%s: mii_write timeout\n", device_xname(sc->sc_dev)); 1602 } 1603 1604 void 1605 cas_mii_statchg(struct ifnet *ifp) 1606 { 1607 struct cas_softc *sc = ifp->if_softc; 1608 #ifdef CAS_DEBUG 1609 int instance = IFM_INST(sc->sc_media.ifm_cur->ifm_media); 1610 #endif 1611 bus_space_tag_t t = sc->sc_memt; 1612 bus_space_handle_t mac = sc->sc_memh; 1613 u_int32_t v; 1614 1615 #ifdef CAS_DEBUG 1616 if (sc->sc_debug) 1617 printf("cas_mii_statchg: status change: phy = %d\n", 1618 sc->sc_phys[instance]); 1619 #endif 1620 1621 /* Set tx full duplex options */ 1622 bus_space_write_4(t, mac, CAS_MAC_TX_CONFIG, 0); 1623 delay(10000); /* reg must be cleared and delay before changing. */ 1624 v = CAS_MAC_TX_ENA_IPG0|CAS_MAC_TX_NGU|CAS_MAC_TX_NGU_LIMIT| 1625 CAS_MAC_TX_ENABLE; 1626 if ((IFM_OPTIONS(sc->sc_mii.mii_media_active) & IFM_FDX) != 0) { 1627 v |= CAS_MAC_TX_IGN_CARRIER|CAS_MAC_TX_IGN_COLLIS; 1628 } 1629 bus_space_write_4(t, mac, CAS_MAC_TX_CONFIG, v); 1630 1631 /* XIF Configuration */ 1632 v = CAS_MAC_XIF_TX_MII_ENA; 1633 v |= CAS_MAC_XIF_LINK_LED; 1634 1635 /* MII needs echo disable if half duplex. */ 1636 if ((IFM_OPTIONS(sc->sc_mii.mii_media_active) & IFM_FDX) != 0) 1637 /* turn on full duplex LED */ 1638 v |= CAS_MAC_XIF_FDPLX_LED; 1639 else 1640 /* half duplex -- disable echo */ 1641 v |= CAS_MAC_XIF_ECHO_DISABL; 1642 1643 switch (IFM_SUBTYPE(sc->sc_mii.mii_media_active)) { 1644 case IFM_1000_T: /* Gigabit using GMII interface */ 1645 case IFM_1000_SX: 1646 v |= CAS_MAC_XIF_GMII_MODE; 1647 break; 1648 default: 1649 v &= ~CAS_MAC_XIF_GMII_MODE; 1650 } 1651 bus_space_write_4(t, mac, CAS_MAC_XIF_CONFIG, v); 1652 } 1653 1654 int 1655 cas_pcs_readreg(device_t self, int phy, int reg) 1656 { 1657 struct cas_softc *sc = device_private(self); 1658 bus_space_tag_t t = sc->sc_memt; 1659 bus_space_handle_t pcs = sc->sc_memh; 1660 1661 #ifdef CAS_DEBUG 1662 if (sc->sc_debug) 1663 printf("cas_pcs_readreg: phy %d reg %d\n", phy, reg); 1664 #endif 1665 1666 if (phy != CAS_PHYAD_EXTERNAL) 1667 return (0); 1668 1669 switch (reg) { 1670 case MII_BMCR: 1671 reg = CAS_MII_CONTROL; 1672 break; 1673 case MII_BMSR: 1674 reg = CAS_MII_STATUS; 1675 break; 1676 case MII_ANAR: 1677 reg = CAS_MII_ANAR; 1678 break; 1679 case MII_ANLPAR: 1680 reg = CAS_MII_ANLPAR; 1681 break; 1682 case MII_EXTSR: 1683 return (EXTSR_1000XFDX|EXTSR_1000XHDX); 1684 default: 1685 return (0); 1686 } 1687 1688 return bus_space_read_4(t, pcs, reg); 1689 } 1690 1691 void 1692 cas_pcs_writereg(device_t self, int phy, int reg, int val) 1693 { 1694 struct cas_softc *sc = device_private(self); 1695 bus_space_tag_t t = sc->sc_memt; 1696 bus_space_handle_t pcs = sc->sc_memh; 1697 int reset = 0; 1698 1699 #ifdef CAS_DEBUG 1700 if (sc->sc_debug) 1701 printf("cas_pcs_writereg: phy %d reg %d val %x\n", 1702 phy, reg, val); 1703 #endif 1704 1705 if (phy != CAS_PHYAD_EXTERNAL) 1706 return; 1707 1708 if (reg == MII_ANAR) 1709 bus_space_write_4(t, pcs, CAS_MII_CONFIG, 0); 1710 1711 switch (reg) { 1712 case MII_BMCR: 1713 reset = (val & CAS_MII_CONTROL_RESET); 1714 reg = CAS_MII_CONTROL; 1715 break; 1716 case MII_BMSR: 1717 reg = CAS_MII_STATUS; 1718 break; 1719 case MII_ANAR: 1720 reg = CAS_MII_ANAR; 1721 break; 1722 case MII_ANLPAR: 1723 reg = CAS_MII_ANLPAR; 1724 break; 1725 default: 1726 return; 1727 } 1728 1729 bus_space_write_4(t, pcs, reg, val); 1730 1731 if (reset) 1732 cas_bitwait(sc, pcs, CAS_MII_CONTROL, CAS_MII_CONTROL_RESET, 0); 1733 1734 if (reg == CAS_MII_ANAR || reset) 1735 bus_space_write_4(t, pcs, CAS_MII_CONFIG, 1736 CAS_MII_CONFIG_ENABLE); 1737 } 1738 1739 int 1740 cas_mediachange(struct ifnet *ifp) 1741 { 1742 struct cas_softc *sc = ifp->if_softc; 1743 struct mii_data *mii = &sc->sc_mii; 1744 1745 if (mii->mii_instance) { 1746 struct mii_softc *miisc; 1747 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 1748 mii_phy_reset(miisc); 1749 } 1750 1751 return (mii_mediachg(&sc->sc_mii)); 1752 } 1753 1754 void 1755 cas_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 1756 { 1757 struct cas_softc *sc = ifp->if_softc; 1758 1759 mii_pollstat(&sc->sc_mii); 1760 ifmr->ifm_active = sc->sc_mii.mii_media_active; 1761 ifmr->ifm_status = sc->sc_mii.mii_media_status; 1762 } 1763 1764 /* 1765 * Process an ioctl request. 1766 */ 1767 int 1768 cas_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1769 { 1770 struct cas_softc *sc = ifp->if_softc; 1771 int s, error = 0; 1772 1773 s = splnet(); 1774 1775 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1776 error = 0; 1777 if (cmd != SIOCADDMULTI && cmd != SIOCDELMULTI) 1778 ; 1779 else if (ifp->if_flags & IFF_RUNNING) { 1780 /* 1781 * Multicast list has changed; set the hardware filter 1782 * accordingly. 1783 */ 1784 cas_iff(sc); 1785 } 1786 } 1787 1788 splx(s); 1789 return (error); 1790 } 1791 1792 static bool 1793 cas_suspend(device_t self, const pmf_qual_t *qual) 1794 { 1795 struct cas_softc *sc = device_private(self); 1796 bus_space_tag_t t = sc->sc_memt; 1797 bus_space_handle_t h = sc->sc_memh; 1798 1799 bus_space_write_4(t, h, CAS_INTMASK, ~(uint32_t)0); 1800 if (sc->sc_ih != NULL) { 1801 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 1802 sc->sc_ih = NULL; 1803 } 1804 1805 return true; 1806 } 1807 1808 static bool 1809 cas_resume(device_t self, const pmf_qual_t *qual) 1810 { 1811 struct cas_softc *sc = device_private(self); 1812 1813 return cas_estintr(sc, CAS_INTR_PCI | CAS_INTR_REG); 1814 } 1815 1816 static bool 1817 cas_estintr(struct cas_softc *sc, int what) 1818 { 1819 bus_space_tag_t t = sc->sc_memt; 1820 bus_space_handle_t h = sc->sc_memh; 1821 const char *intrstr = NULL; 1822 char intrbuf[PCI_INTRSTR_LEN]; 1823 1824 /* PCI interrupts */ 1825 if (what & CAS_INTR_PCI) { 1826 intrstr = pci_intr_string(sc->sc_pc, sc->sc_handle, intrbuf, sizeof(intrbuf)); 1827 sc->sc_ih = pci_intr_establish(sc->sc_pc, sc->sc_handle, 1828 IPL_NET, cas_intr, sc); 1829 if (sc->sc_ih == NULL) { 1830 aprint_error_dev(sc->sc_dev, 1831 "unable to establish interrupt"); 1832 if (intrstr != NULL) 1833 aprint_error(" at %s", intrstr); 1834 aprint_error("\n"); 1835 return false; 1836 } 1837 1838 aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr); 1839 } 1840 1841 /* Interrupt register */ 1842 if (what & CAS_INTR_REG) { 1843 bus_space_write_4(t, h, CAS_INTMASK, 1844 ~(CAS_INTR_TX_INTME|CAS_INTR_TX_EMPTY| 1845 CAS_INTR_TX_TAG_ERR| 1846 CAS_INTR_RX_DONE|CAS_INTR_RX_NOBUF| 1847 CAS_INTR_RX_TAG_ERR| 1848 CAS_INTR_RX_COMP_FULL|CAS_INTR_PCS| 1849 CAS_INTR_MAC_CONTROL|CAS_INTR_MIF| 1850 CAS_INTR_BERR)); 1851 bus_space_write_4(t, h, CAS_MAC_RX_MASK, 1852 CAS_MAC_RX_DONE|CAS_MAC_RX_FRAME_CNT); 1853 bus_space_write_4(t, h, CAS_MAC_TX_MASK, CAS_MAC_TX_XMIT_DONE); 1854 bus_space_write_4(t, h, CAS_MAC_CONTROL_MASK, 0); /* XXXX */ 1855 } 1856 return true; 1857 } 1858 1859 bool 1860 cas_shutdown(device_t self, int howto) 1861 { 1862 struct cas_softc *sc = device_private(self); 1863 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1864 1865 cas_stop(ifp, 1); 1866 1867 return true; 1868 } 1869 1870 void 1871 cas_iff(struct cas_softc *sc) 1872 { 1873 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1874 struct ethercom *ec = &sc->sc_ethercom; 1875 struct ether_multi *enm; 1876 struct ether_multistep step; 1877 bus_space_tag_t t = sc->sc_memt; 1878 bus_space_handle_t h = sc->sc_memh; 1879 u_int32_t crc, hash[16], rxcfg; 1880 int i; 1881 1882 rxcfg = bus_space_read_4(t, h, CAS_MAC_RX_CONFIG); 1883 rxcfg &= ~(CAS_MAC_RX_HASH_FILTER | CAS_MAC_RX_PROMISCUOUS | 1884 CAS_MAC_RX_PROMISC_GRP); 1885 ifp->if_flags &= ~IFF_ALLMULTI; 1886 1887 if (ifp->if_flags & IFF_PROMISC || ec->ec_multicnt > 0) { 1888 ifp->if_flags |= IFF_ALLMULTI; 1889 if (ifp->if_flags & IFF_PROMISC) 1890 rxcfg |= CAS_MAC_RX_PROMISCUOUS; 1891 else 1892 rxcfg |= CAS_MAC_RX_PROMISC_GRP; 1893 } else { 1894 /* 1895 * Set up multicast address filter by passing all multicast 1896 * addresses through a crc generator, and then using the 1897 * high order 8 bits as an index into the 256 bit logical 1898 * address filter. The high order 4 bits selects the word, 1899 * while the other 4 bits select the bit within the word 1900 * (where bit 0 is the MSB). 1901 */ 1902 1903 rxcfg |= CAS_MAC_RX_HASH_FILTER; 1904 1905 /* Clear hash table */ 1906 for (i = 0; i < 16; i++) 1907 hash[i] = 0; 1908 1909 ETHER_FIRST_MULTI(step, ec, enm); 1910 while (enm != NULL) { 1911 crc = ether_crc32_le(enm->enm_addrlo, 1912 ETHER_ADDR_LEN); 1913 1914 /* Just want the 8 most significant bits. */ 1915 crc >>= 24; 1916 1917 /* Set the corresponding bit in the filter. */ 1918 hash[crc >> 4] |= 1 << (15 - (crc & 15)); 1919 1920 ETHER_NEXT_MULTI(step, enm); 1921 } 1922 1923 /* Now load the hash table into the chip (if we are using it) */ 1924 for (i = 0; i < 16; i++) { 1925 bus_space_write_4(t, h, 1926 CAS_MAC_HASH0 + i * (CAS_MAC_HASH1 - CAS_MAC_HASH0), 1927 hash[i]); 1928 } 1929 } 1930 1931 bus_space_write_4(t, h, CAS_MAC_RX_CONFIG, rxcfg); 1932 } 1933 1934 int 1935 cas_encap(struct cas_softc *sc, struct mbuf *mhead, u_int32_t *bixp) 1936 { 1937 u_int64_t flags; 1938 u_int32_t cur, frag, i; 1939 bus_dmamap_t map; 1940 1941 cur = frag = *bixp; 1942 map = sc->sc_txd[cur].sd_map; 1943 1944 if (bus_dmamap_load_mbuf(sc->sc_dmatag, map, mhead, 1945 BUS_DMA_NOWAIT) != 0) { 1946 return (ENOBUFS); 1947 } 1948 1949 if ((sc->sc_tx_cnt + map->dm_nsegs) > (CAS_NTXDESC - 2)) { 1950 bus_dmamap_unload(sc->sc_dmatag, map); 1951 return (ENOBUFS); 1952 } 1953 1954 bus_dmamap_sync(sc->sc_dmatag, map, 0, map->dm_mapsize, 1955 BUS_DMASYNC_PREWRITE); 1956 1957 for (i = 0; i < map->dm_nsegs; i++) { 1958 sc->sc_txdescs[frag].cd_addr = 1959 CAS_DMA_WRITE(map->dm_segs[i].ds_addr); 1960 flags = (map->dm_segs[i].ds_len & CAS_TD_BUFSIZE) | 1961 (i == 0 ? CAS_TD_START_OF_PACKET : 0) | 1962 ((i == (map->dm_nsegs - 1)) ? CAS_TD_END_OF_PACKET : 0); 1963 sc->sc_txdescs[frag].cd_flags = CAS_DMA_WRITE(flags); 1964 bus_dmamap_sync(sc->sc_dmatag, sc->sc_cddmamap, 1965 CAS_CDTXOFF(frag), sizeof(struct cas_desc), 1966 BUS_DMASYNC_PREWRITE); 1967 cur = frag; 1968 if (++frag == CAS_NTXDESC) 1969 frag = 0; 1970 } 1971 1972 sc->sc_tx_cnt += map->dm_nsegs; 1973 sc->sc_txd[*bixp].sd_map = sc->sc_txd[cur].sd_map; 1974 sc->sc_txd[cur].sd_map = map; 1975 sc->sc_txd[cur].sd_mbuf = mhead; 1976 1977 bus_space_write_4(sc->sc_memt, sc->sc_memh, CAS_TX_KICK, frag); 1978 1979 *bixp = frag; 1980 1981 /* sync descriptors */ 1982 1983 return (0); 1984 } 1985 1986 /* 1987 * Transmit interrupt. 1988 */ 1989 int 1990 cas_tint(struct cas_softc *sc, u_int32_t status) 1991 { 1992 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1993 struct cas_sxd *sd; 1994 u_int32_t cons, comp; 1995 1996 comp = bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_TX_COMPLETION); 1997 cons = sc->sc_tx_cons; 1998 while (cons != comp) { 1999 sd = &sc->sc_txd[cons]; 2000 if (sd->sd_mbuf != NULL) { 2001 bus_dmamap_sync(sc->sc_dmatag, sd->sd_map, 0, 2002 sd->sd_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 2003 bus_dmamap_unload(sc->sc_dmatag, sd->sd_map); 2004 m_freem(sd->sd_mbuf); 2005 sd->sd_mbuf = NULL; 2006 ifp->if_opackets++; 2007 } 2008 sc->sc_tx_cnt--; 2009 if (++cons == CAS_NTXDESC) 2010 cons = 0; 2011 } 2012 sc->sc_tx_cons = cons; 2013 2014 if (sc->sc_tx_cnt < CAS_NTXDESC - 2) 2015 ifp->if_flags &= ~IFF_OACTIVE; 2016 if (sc->sc_tx_cnt == 0) 2017 ifp->if_timer = 0; 2018 2019 cas_start(ifp); 2020 2021 return (1); 2022 } 2023 2024 void 2025 cas_start(struct ifnet *ifp) 2026 { 2027 struct cas_softc *sc = ifp->if_softc; 2028 struct mbuf *m; 2029 u_int32_t bix; 2030 2031 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 2032 return; 2033 2034 bix = sc->sc_tx_prod; 2035 while (sc->sc_txd[bix].sd_mbuf == NULL) { 2036 IFQ_POLL(&ifp->if_snd, m); 2037 if (m == NULL) 2038 break; 2039 2040 /* 2041 * If BPF is listening on this interface, let it see the 2042 * packet before we commit it to the wire. 2043 */ 2044 bpf_mtap(ifp, m); 2045 2046 /* 2047 * Encapsulate this packet and start it going... 2048 * or fail... 2049 */ 2050 if (cas_encap(sc, m, &bix)) { 2051 ifp->if_flags |= IFF_OACTIVE; 2052 break; 2053 } 2054 2055 IFQ_DEQUEUE(&ifp->if_snd, m); 2056 ifp->if_timer = 5; 2057 } 2058 2059 sc->sc_tx_prod = bix; 2060 } 2061 2062 MODULE(MODULE_CLASS_DRIVER, if_cas, "pci"); 2063 2064 #ifdef _MODULE 2065 #include "ioconf.c" 2066 #endif 2067 2068 static int 2069 if_cas_modcmd(modcmd_t cmd, void *opaque) 2070 { 2071 int error = 0; 2072 2073 switch (cmd) { 2074 case MODULE_CMD_INIT: 2075 #ifdef _MODULE 2076 error = config_init_component(cfdriver_ioconf_cas, 2077 cfattach_ioconf_cas, cfdata_ioconf_cas); 2078 #endif 2079 return error; 2080 case MODULE_CMD_FINI: 2081 #ifdef _MODULE 2082 error = config_fini_component(cfdriver_ioconf_cas, 2083 cfattach_ioconf_cas, cfdata_ioconf_cas); 2084 #endif 2085 return error; 2086 default: 2087 return ENOTTY; 2088 } 2089 } 2090