if_cas.c revision 1.34
1 /* $NetBSD: if_cas.c,v 1.34 2019/05/23 13:10:52 msaitoh 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 1.34 2019/05/23 13:10:52 msaitoh 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/rndsource.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 uint32_t, uint32_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); 140 void cas_iff(struct cas_softc *); 141 int cas_encap(struct cas_softc *, struct mbuf *, uint32_t *); 142 143 /* MII methods & callbacks */ 144 int cas_mii_readreg(device_t, int, int, uint16_t*); 145 int cas_mii_writereg(device_t, int, int, uint16_t); 146 void cas_mii_statchg(struct ifnet *); 147 int cas_pcs_readreg(device_t, int, int, uint16_t *); 148 int cas_pcs_writereg(device_t, int, int, uint16_t); 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 *, uint32_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 uint8_t cas_promhdr[] = { 0x55, 0xaa }; 187 static const uint8_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 uint8_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 uint8_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 #define CAS_LMA_MAXNUM 4 207 int 208 cas_pci_enaddr(struct cas_softc *sc, struct pci_attach_args *pa, 209 uint8_t *enaddr) 210 { 211 struct pci_vpd_largeres *res; 212 struct pci_vpd *vpd; 213 bus_space_handle_t romh; 214 bus_space_tag_t romt; 215 bus_size_t romsize = 0; 216 uint8_t enaddrs[CAS_LMA_MAXNUM][ETHER_ADDR_LEN]; 217 uint8_t buf[32], *desc; 218 pcireg_t address; 219 int dataoff, vpdoff, len, lma = 0; 220 int i, rv = -1; 221 222 if (pci_mapreg_map(pa, PCI_MAPREG_ROM, PCI_MAPREG_TYPE_MEM, 0, 223 &romt, &romh, NULL, &romsize)) 224 return (-1); 225 226 address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_START); 227 address |= PCI_MAPREG_ROM_ENABLE; 228 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_START, address); 229 230 bus_space_read_region_1(romt, romh, 0, buf, sizeof(buf)); 231 if (bcmp(buf, cas_promhdr, sizeof(cas_promhdr))) 232 goto fail; 233 234 dataoff = buf[PROMHDR_PTR_DATA] | (buf[PROMHDR_PTR_DATA + 1] << 8); 235 if (dataoff < 0x1c) 236 goto fail; 237 238 bus_space_read_region_1(romt, romh, dataoff, buf, sizeof(buf)); 239 if ((bcmp(buf, cas_promdat, sizeof(cas_promdat)) && 240 bcmp(buf, cas_promdat_ns, sizeof(cas_promdat_ns))) || 241 bcmp(buf + PROMDATA_DATA2, cas_promdat2, sizeof(cas_promdat2))) 242 goto fail; 243 244 vpdoff = buf[PROMDATA_PTR_VPD] | (buf[PROMDATA_PTR_VPD + 1] << 8); 245 if (vpdoff < 0x1c) 246 goto fail; 247 248 next: 249 bus_space_read_region_1(romt, romh, vpdoff, buf, sizeof(buf)); 250 if (!PCI_VPDRES_ISLARGE(buf[0])) 251 goto fail; 252 253 res = (struct pci_vpd_largeres *)buf; 254 vpdoff += sizeof(*res); 255 256 len = ((res->vpdres_len_msb << 8) + res->vpdres_len_lsb); 257 switch (PCI_VPDRES_LARGE_NAME(res->vpdres_byte0)) { 258 case PCI_VPDRES_TYPE_IDENTIFIER_STRING: 259 /* Skip identifier string. */ 260 vpdoff += len; 261 goto next; 262 263 case PCI_VPDRES_TYPE_VPD: 264 while (len > 0) { 265 bus_space_read_region_1(romt, romh, vpdoff, 266 buf, sizeof(buf)); 267 268 vpd = (struct pci_vpd *)buf; 269 vpdoff += sizeof(*vpd) + vpd->vpd_len; 270 len -= sizeof(*vpd) + vpd->vpd_len; 271 272 /* 273 * We're looking for an "Enhanced" VPD... 274 */ 275 if (vpd->vpd_key0 != 'Z') 276 continue; 277 278 desc = buf + sizeof(*vpd); 279 280 /* 281 * ...which is an instance property... 282 */ 283 if (desc[0] != 'I') 284 continue; 285 desc += 3; 286 287 /* 288 * ...that's a byte array with the proper 289 * length for a MAC address... 290 */ 291 if (desc[0] != 'B' || desc[1] != ETHER_ADDR_LEN) 292 continue; 293 desc += 2; 294 295 /* 296 * ...named "local-mac-address". 297 */ 298 if (strcmp(desc, "local-mac-address") != 0) 299 continue; 300 desc += strlen("local-mac-address") + 1; 301 302 memcpy(enaddrs[lma], desc, ETHER_ADDR_LEN); 303 lma++; 304 rv = 0; 305 if (lma == CAS_LMA_MAXNUM) 306 break; 307 } 308 break; 309 310 default: 311 goto fail; 312 } 313 314 i = 0; 315 /* 316 * Multi port card has bridge chip. The device number is fixed: 317 * e.g. 318 * p0: 005:00:0 319 * p1: 005:01:0 320 * p2: 006:02:0 321 * p3: 006:03:0 322 */ 323 if ((lma > 1) && (pa->pa_device < CAS_LMA_MAXNUM) 324 && (pa->pa_device < lma)) 325 i = pa->pa_device; 326 memcpy(enaddr, enaddrs[i], ETHER_ADDR_LEN); 327 fail: 328 if (romsize != 0) 329 bus_space_unmap(romt, romh, romsize); 330 331 address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM); 332 address &= ~PCI_MAPREG_ROM_ENABLE; 333 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM, address); 334 335 return (rv); 336 } 337 338 void 339 cas_attach(device_t parent, device_t self, void *aux) 340 { 341 struct pci_attach_args *pa = aux; 342 struct cas_softc *sc = device_private(self); 343 prop_data_t data; 344 uint8_t enaddr[ETHER_ADDR_LEN]; 345 346 sc->sc_dev = self; 347 pci_aprint_devinfo(pa, NULL); 348 sc->sc_rev = PCI_REVISION(pa->pa_class); 349 sc->sc_dmatag = pa->pa_dmat; 350 351 #define PCI_CAS_BASEADDR 0x10 352 if (pci_mapreg_map(pa, PCI_CAS_BASEADDR, PCI_MAPREG_TYPE_MEM, 0, 353 &sc->sc_memt, &sc->sc_memh, NULL, &sc->sc_size) != 0) { 354 aprint_error_dev(sc->sc_dev, 355 "unable to map device registers\n"); 356 return; 357 } 358 359 if ((data = prop_dictionary_get(device_properties(sc->sc_dev), 360 "mac-address")) != NULL) 361 memcpy(enaddr, prop_data_data_nocopy(data), ETHER_ADDR_LEN); 362 else if (cas_pci_enaddr(sc, pa, enaddr) != 0) { 363 aprint_error_dev(sc->sc_dev, "no Ethernet address found\n"); 364 memset(enaddr, 0, sizeof(enaddr)); 365 } 366 367 sc->sc_burst = 16; /* XXX */ 368 369 sc->sc_att_stage = CAS_ATT_BACKEND_0; 370 371 if (pci_intr_map(pa, &sc->sc_handle) != 0) { 372 aprint_error_dev(sc->sc_dev, "unable to map interrupt\n"); 373 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_size); 374 return; 375 } 376 sc->sc_pc = pa->pa_pc; 377 if (!cas_estintr(sc, CAS_INTR_PCI)) { 378 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_size); 379 aprint_error_dev(sc->sc_dev, "unable to establish interrupt\n"); 380 return; 381 } 382 383 sc->sc_att_stage = CAS_ATT_BACKEND_1; 384 385 /* 386 * call the main configure 387 */ 388 cas_config(sc, enaddr); 389 390 if (pmf_device_register1(sc->sc_dev, 391 cas_suspend, cas_resume, cas_shutdown)) 392 pmf_class_network_register(sc->sc_dev, &sc->sc_ethercom.ec_if); 393 else 394 aprint_error_dev(sc->sc_dev, 395 "could not establish power handlers\n"); 396 397 sc->sc_att_stage = CAS_ATT_FINISHED; 398 /*FALLTHROUGH*/ 399 } 400 401 /* 402 * cas_config: 403 * 404 * Attach a Cassini interface to the system. 405 */ 406 void 407 cas_config(struct cas_softc *sc, const uint8_t *enaddr) 408 { 409 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 410 struct mii_data *mii = &sc->sc_mii; 411 struct mii_softc *child; 412 int i, error; 413 414 /* Make sure the chip is stopped. */ 415 ifp->if_softc = sc; 416 cas_reset(sc); 417 418 /* 419 * Allocate the control data structures, and create and load the 420 * DMA map for it. 421 */ 422 if ((error = bus_dmamem_alloc(sc->sc_dmatag, 423 sizeof(struct cas_control_data), CAS_PAGE_SIZE, 0, &sc->sc_cdseg, 424 1, &sc->sc_cdnseg, 0)) != 0) { 425 aprint_error_dev(sc->sc_dev, 426 "unable to allocate control data, error = %d\n", 427 error); 428 cas_partial_detach(sc, CAS_ATT_0); 429 } 430 431 /* XXX should map this in with correct endianness */ 432 if ((error = bus_dmamem_map(sc->sc_dmatag, &sc->sc_cdseg, 433 sc->sc_cdnseg, sizeof(struct cas_control_data), 434 (void **)&sc->sc_control_data, BUS_DMA_COHERENT)) != 0) { 435 aprint_error_dev(sc->sc_dev, 436 "unable to map control data, error = %d\n", error); 437 cas_partial_detach(sc, CAS_ATT_1); 438 } 439 440 if ((error = bus_dmamap_create(sc->sc_dmatag, 441 sizeof(struct cas_control_data), 1, 442 sizeof(struct cas_control_data), 0, 0, &sc->sc_cddmamap)) != 0) { 443 aprint_error_dev(sc->sc_dev, 444 "unable to create control data DMA map, error = %d\n", 445 error); 446 cas_partial_detach(sc, CAS_ATT_2); 447 } 448 449 if ((error = bus_dmamap_load(sc->sc_dmatag, sc->sc_cddmamap, 450 sc->sc_control_data, sizeof(struct cas_control_data), NULL, 451 0)) != 0) { 452 aprint_error_dev(sc->sc_dev, 453 "unable to load control data DMA map, error = %d\n", 454 error); 455 cas_partial_detach(sc, CAS_ATT_3); 456 } 457 458 memset(sc->sc_control_data, 0, sizeof(struct cas_control_data)); 459 460 /* 461 * Create the receive buffer DMA maps. 462 */ 463 for (i = 0; i < CAS_NRXDESC; i++) { 464 bus_dma_segment_t seg; 465 char *kva; 466 int rseg; 467 468 if ((error = bus_dmamem_alloc(sc->sc_dmatag, CAS_PAGE_SIZE, 469 CAS_PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 470 aprint_error_dev(sc->sc_dev, 471 "unable to alloc rx DMA mem %d, error = %d\n", 472 i, error); 473 cas_partial_detach(sc, CAS_ATT_5); 474 } 475 sc->sc_rxsoft[i].rxs_dmaseg = seg; 476 477 if ((error = bus_dmamem_map(sc->sc_dmatag, &seg, rseg, 478 CAS_PAGE_SIZE, (void **)&kva, BUS_DMA_NOWAIT)) != 0) { 479 aprint_error_dev(sc->sc_dev, 480 "unable to alloc rx DMA mem %d, error = %d\n", 481 i, error); 482 cas_partial_detach(sc, CAS_ATT_5); 483 } 484 sc->sc_rxsoft[i].rxs_kva = kva; 485 486 if ((error = bus_dmamap_create(sc->sc_dmatag, CAS_PAGE_SIZE, 1, 487 CAS_PAGE_SIZE, 0, 0, &sc->sc_rxsoft[i].rxs_dmamap)) != 0) { 488 aprint_error_dev(sc->sc_dev, 489 "unable to create rx DMA map %d, error = %d\n", 490 i, error); 491 cas_partial_detach(sc, CAS_ATT_5); 492 } 493 494 if ((error = bus_dmamap_load(sc->sc_dmatag, 495 sc->sc_rxsoft[i].rxs_dmamap, kva, CAS_PAGE_SIZE, NULL, 496 BUS_DMA_NOWAIT)) != 0) { 497 aprint_error_dev(sc->sc_dev, 498 "unable to load rx DMA map %d, error = %d\n", 499 i, error); 500 cas_partial_detach(sc, CAS_ATT_5); 501 } 502 } 503 504 /* 505 * Create the transmit buffer DMA maps. 506 */ 507 for (i = 0; i < CAS_NTXDESC; i++) { 508 if ((error = bus_dmamap_create(sc->sc_dmatag, MCLBYTES, 509 CAS_NTXSEGS, MCLBYTES, 0, BUS_DMA_NOWAIT, 510 &sc->sc_txd[i].sd_map)) != 0) { 511 aprint_error_dev(sc->sc_dev, 512 "unable to create tx DMA map %d, error = %d\n", 513 i, error); 514 cas_partial_detach(sc, CAS_ATT_6); 515 } 516 sc->sc_txd[i].sd_mbuf = NULL; 517 } 518 519 /* 520 * From this point forward, the attachment cannot fail. A failure 521 * before this point releases all resources that may have been 522 * allocated. 523 */ 524 525 /* Announce ourselves. */ 526 aprint_normal_dev(sc->sc_dev, "Ethernet address %s\n", 527 ether_sprintf(enaddr)); 528 aprint_naive(": Ethernet controller\n"); 529 530 /* Get RX FIFO size */ 531 sc->sc_rxfifosize = 16 * 1024; 532 533 /* Initialize ifnet structure. */ 534 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 535 ifp->if_softc = sc; 536 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 537 ifp->if_start = cas_start; 538 ifp->if_ioctl = cas_ioctl; 539 ifp->if_watchdog = cas_watchdog; 540 ifp->if_stop = cas_stop; 541 ifp->if_init = cas_init; 542 IFQ_SET_MAXLEN(&ifp->if_snd, CAS_NTXDESC - 1); 543 IFQ_SET_READY(&ifp->if_snd); 544 545 /* Initialize ifmedia structures and MII info */ 546 mii->mii_ifp = ifp; 547 mii->mii_readreg = cas_mii_readreg; 548 mii->mii_writereg = cas_mii_writereg; 549 mii->mii_statchg = cas_mii_statchg; 550 551 ifmedia_init(&mii->mii_media, 0, cas_mediachange, cas_mediastatus); 552 sc->sc_ethercom.ec_mii = mii; 553 554 bus_space_write_4(sc->sc_memt, sc->sc_memh, CAS_MII_DATAPATH_MODE, 0); 555 556 cas_mifinit(sc); 557 558 if (sc->sc_mif_config & CAS_MIF_CONFIG_MDI1) { 559 sc->sc_mif_config |= CAS_MIF_CONFIG_PHY_SEL; 560 bus_space_write_4(sc->sc_memt, sc->sc_memh, 561 CAS_MIF_CONFIG, sc->sc_mif_config); 562 } 563 564 mii_attach(sc->sc_dev, mii, 0xffffffff, MII_PHY_ANY, 565 MII_OFFSET_ANY, 0); 566 567 child = LIST_FIRST(&mii->mii_phys); 568 if (child == NULL && 569 sc->sc_mif_config & (CAS_MIF_CONFIG_MDI0 | CAS_MIF_CONFIG_MDI1)) { 570 /* 571 * Try the external PCS SERDES if we didn't find any 572 * MII devices. 573 */ 574 bus_space_write_4(sc->sc_memt, sc->sc_memh, 575 CAS_MII_DATAPATH_MODE, CAS_MII_DATAPATH_SERDES); 576 577 bus_space_write_4(sc->sc_memt, sc->sc_memh, 578 CAS_MII_CONFIG, CAS_MII_CONFIG_ENABLE); 579 580 mii->mii_readreg = cas_pcs_readreg; 581 mii->mii_writereg = cas_pcs_writereg; 582 583 mii_attach(sc->sc_dev, mii, 0xffffffff, MII_PHY_ANY, 584 MII_OFFSET_ANY, MIIF_NOISOLATE); 585 } 586 587 child = LIST_FIRST(&mii->mii_phys); 588 if (child == NULL) { 589 /* No PHY attached */ 590 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_MANUAL, 0, NULL); 591 ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_MANUAL); 592 } else { 593 /* 594 * Walk along the list of attached MII devices and 595 * establish an `MII instance' to `phy number' 596 * mapping. We'll use this mapping in media change 597 * requests to determine which phy to use to program 598 * the MIF configuration register. 599 */ 600 for (; child != NULL; child = LIST_NEXT(child, mii_list)) { 601 /* 602 * Note: we support just two PHYs: the built-in 603 * internal device and an external on the MII 604 * connector. 605 */ 606 if (child->mii_phy > 1 || child->mii_inst > 1) { 607 aprint_error_dev(sc->sc_dev, 608 "cannot accommodate MII device %s" 609 " at phy %d, instance %d\n", 610 device_xname(child->mii_dev), 611 child->mii_phy, child->mii_inst); 612 continue; 613 } 614 615 sc->sc_phys[child->mii_inst] = child->mii_phy; 616 } 617 618 /* 619 * XXX - we can really do the following ONLY if the 620 * phy indeed has the auto negotiation capability!! 621 */ 622 ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO); 623 } 624 625 /* claim 802.1q capability */ 626 sc->sc_ethercom.ec_capabilities |= ETHERCAP_VLAN_MTU; 627 628 /* Attach the interface. */ 629 if_attach(ifp); 630 if_deferred_start_init(ifp, NULL); 631 ether_ifattach(ifp, enaddr); 632 633 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 634 RND_TYPE_NET, RND_FLAG_DEFAULT); 635 636 evcnt_attach_dynamic(&sc->sc_ev_intr, EVCNT_TYPE_INTR, 637 NULL, device_xname(sc->sc_dev), "interrupts"); 638 639 callout_init(&sc->sc_tick_ch, 0); 640 641 return; 642 } 643 644 int 645 cas_detach(device_t self, int flags) 646 { 647 int i; 648 struct cas_softc *sc = device_private(self); 649 bus_space_tag_t t = sc->sc_memt; 650 bus_space_handle_t h = sc->sc_memh; 651 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 652 653 /* 654 * Free any resources we've allocated during the failed attach 655 * attempt. Do this in reverse order and fall through. 656 */ 657 switch (sc->sc_att_stage) { 658 case CAS_ATT_FINISHED: 659 bus_space_write_4(t, h, CAS_INTMASK, ~(uint32_t)0); 660 pmf_device_deregister(self); 661 cas_stop(&sc->sc_ethercom.ec_if, 1); 662 evcnt_detach(&sc->sc_ev_intr); 663 664 rnd_detach_source(&sc->rnd_source); 665 666 ether_ifdetach(ifp); 667 if_detach(ifp); 668 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 669 670 callout_destroy(&sc->sc_tick_ch); 671 672 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 673 674 /*FALLTHROUGH*/ 675 case CAS_ATT_MII: 676 case CAS_ATT_7: 677 case CAS_ATT_6: 678 for (i = 0; i < CAS_NTXDESC; i++) { 679 if (sc->sc_txd[i].sd_map != NULL) 680 bus_dmamap_destroy(sc->sc_dmatag, 681 sc->sc_txd[i].sd_map); 682 } 683 /*FALLTHROUGH*/ 684 case CAS_ATT_5: 685 for (i = 0; i < CAS_NRXDESC; i++) { 686 if (sc->sc_rxsoft[i].rxs_dmamap != NULL) 687 bus_dmamap_unload(sc->sc_dmatag, 688 sc->sc_rxsoft[i].rxs_dmamap); 689 if (sc->sc_rxsoft[i].rxs_dmamap != NULL) 690 bus_dmamap_destroy(sc->sc_dmatag, 691 sc->sc_rxsoft[i].rxs_dmamap); 692 if (sc->sc_rxsoft[i].rxs_kva != NULL) 693 bus_dmamem_unmap(sc->sc_dmatag, 694 sc->sc_rxsoft[i].rxs_kva, CAS_PAGE_SIZE); 695 /* XXX need to check that bus_dmamem_alloc suceeded 696 if (sc->sc_rxsoft[i].rxs_dmaseg != NULL) 697 */ 698 bus_dmamem_free(sc->sc_dmatag, 699 &(sc->sc_rxsoft[i].rxs_dmaseg), 1); 700 } 701 bus_dmamap_unload(sc->sc_dmatag, sc->sc_cddmamap); 702 /*FALLTHROUGH*/ 703 case CAS_ATT_4: 704 case CAS_ATT_3: 705 bus_dmamap_destroy(sc->sc_dmatag, sc->sc_cddmamap); 706 /*FALLTHROUGH*/ 707 case CAS_ATT_2: 708 bus_dmamem_unmap(sc->sc_dmatag, sc->sc_control_data, 709 sizeof(struct cas_control_data)); 710 /*FALLTHROUGH*/ 711 case CAS_ATT_1: 712 bus_dmamem_free(sc->sc_dmatag, &sc->sc_cdseg, sc->sc_cdnseg); 713 /*FALLTHROUGH*/ 714 case CAS_ATT_0: 715 sc->sc_att_stage = CAS_ATT_0; 716 /*FALLTHROUGH*/ 717 case CAS_ATT_BACKEND_2: 718 case CAS_ATT_BACKEND_1: 719 if (sc->sc_ih != NULL) { 720 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 721 sc->sc_ih = NULL; 722 } 723 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_size); 724 /*FALLTHROUGH*/ 725 case CAS_ATT_BACKEND_0: 726 break; 727 } 728 return 0; 729 } 730 731 static void 732 cas_partial_detach(struct cas_softc *sc, enum cas_attach_stage stage) 733 { 734 cfattach_t ca = device_cfattach(sc->sc_dev); 735 736 sc->sc_att_stage = stage; 737 (*ca->ca_detach)(sc->sc_dev, 0); 738 } 739 740 void 741 cas_tick(void *arg) 742 { 743 struct cas_softc *sc = arg; 744 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 745 bus_space_tag_t t = sc->sc_memt; 746 bus_space_handle_t mac = sc->sc_memh; 747 int s; 748 uint32_t v; 749 750 /* unload collisions counters */ 751 v = bus_space_read_4(t, mac, CAS_MAC_EXCESS_COLL_CNT) + 752 bus_space_read_4(t, mac, CAS_MAC_LATE_COLL_CNT); 753 ifp->if_collisions += v + 754 bus_space_read_4(t, mac, CAS_MAC_NORM_COLL_CNT) + 755 bus_space_read_4(t, mac, CAS_MAC_FIRST_COLL_CNT); 756 ifp->if_oerrors += v; 757 758 /* read error counters */ 759 ifp->if_ierrors += 760 bus_space_read_4(t, mac, CAS_MAC_RX_LEN_ERR_CNT) + 761 bus_space_read_4(t, mac, CAS_MAC_RX_ALIGN_ERR) + 762 bus_space_read_4(t, mac, CAS_MAC_RX_CRC_ERR_CNT) + 763 bus_space_read_4(t, mac, CAS_MAC_RX_CODE_VIOL); 764 765 /* clear the hardware counters */ 766 bus_space_write_4(t, mac, CAS_MAC_NORM_COLL_CNT, 0); 767 bus_space_write_4(t, mac, CAS_MAC_FIRST_COLL_CNT, 0); 768 bus_space_write_4(t, mac, CAS_MAC_EXCESS_COLL_CNT, 0); 769 bus_space_write_4(t, mac, CAS_MAC_LATE_COLL_CNT, 0); 770 bus_space_write_4(t, mac, CAS_MAC_RX_LEN_ERR_CNT, 0); 771 bus_space_write_4(t, mac, CAS_MAC_RX_ALIGN_ERR, 0); 772 bus_space_write_4(t, mac, CAS_MAC_RX_CRC_ERR_CNT, 0); 773 bus_space_write_4(t, mac, CAS_MAC_RX_CODE_VIOL, 0); 774 775 s = splnet(); 776 mii_tick(&sc->sc_mii); 777 splx(s); 778 779 callout_reset(&sc->sc_tick_ch, hz, cas_tick, sc); 780 } 781 782 int 783 cas_bitwait(struct cas_softc *sc, bus_space_handle_t h, int r, 784 uint32_t clr, uint32_t set) 785 { 786 int i; 787 uint32_t reg; 788 789 for (i = TRIES; i--; DELAY(100)) { 790 reg = bus_space_read_4(sc->sc_memt, h, r); 791 if ((reg & clr) == 0 && (reg & set) == set) 792 return (1); 793 } 794 795 return (0); 796 } 797 798 void 799 cas_reset(struct cas_softc *sc) 800 { 801 bus_space_tag_t t = sc->sc_memt; 802 bus_space_handle_t h = sc->sc_memh; 803 int s; 804 805 s = splnet(); 806 DPRINTF(sc, ("%s: cas_reset\n", device_xname(sc->sc_dev))); 807 cas_reset_rx(sc); 808 cas_reset_tx(sc); 809 810 /* Disable interrupts */ 811 bus_space_write_4(sc->sc_memt, sc->sc_memh, CAS_INTMASK, ~(uint32_t)0); 812 813 /* Do a full reset */ 814 bus_space_write_4(t, h, CAS_RESET, 815 CAS_RESET_RX | CAS_RESET_TX | CAS_RESET_BLOCK_PCS); 816 if (!cas_bitwait(sc, h, CAS_RESET, CAS_RESET_RX | CAS_RESET_TX, 0)) 817 aprint_error_dev(sc->sc_dev, "cannot reset device\n"); 818 splx(s); 819 } 820 821 822 /* 823 * cas_rxdrain: 824 * 825 * Drain the receive queue. 826 */ 827 void 828 cas_rxdrain(struct cas_softc *sc) 829 { 830 /* Nothing to do yet. */ 831 } 832 833 /* 834 * Reset the whole thing. 835 */ 836 void 837 cas_stop(struct ifnet *ifp, int disable) 838 { 839 struct cas_softc *sc = (struct cas_softc *)ifp->if_softc; 840 struct cas_sxd *sd; 841 uint32_t i; 842 843 DPRINTF(sc, ("%s: cas_stop\n", device_xname(sc->sc_dev))); 844 845 callout_stop(&sc->sc_tick_ch); 846 847 /* 848 * Mark the interface down and cancel the watchdog timer. 849 */ 850 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 851 ifp->if_timer = 0; 852 853 mii_down(&sc->sc_mii); 854 855 cas_reset_rx(sc); 856 cas_reset_tx(sc); 857 858 /* 859 * Release any queued transmit buffers. 860 */ 861 for (i = 0; i < CAS_NTXDESC; i++) { 862 sd = &sc->sc_txd[i]; 863 if (sd->sd_mbuf != NULL) { 864 bus_dmamap_sync(sc->sc_dmatag, sd->sd_map, 0, 865 sd->sd_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 866 bus_dmamap_unload(sc->sc_dmatag, sd->sd_map); 867 m_freem(sd->sd_mbuf); 868 sd->sd_mbuf = NULL; 869 } 870 } 871 sc->sc_tx_cnt = sc->sc_tx_prod = sc->sc_tx_cons = 0; 872 873 if (disable) 874 cas_rxdrain(sc); 875 } 876 877 878 /* 879 * Reset the receiver 880 */ 881 int 882 cas_reset_rx(struct cas_softc *sc) 883 { 884 bus_space_tag_t t = sc->sc_memt; 885 bus_space_handle_t h = sc->sc_memh; 886 887 /* 888 * Resetting while DMA is in progress can cause a bus hang, so we 889 * disable DMA first. 890 */ 891 cas_disable_rx(sc); 892 bus_space_write_4(t, h, CAS_RX_CONFIG, 0); 893 /* Wait till it finishes */ 894 if (!cas_bitwait(sc, h, CAS_RX_CONFIG, 1, 0)) 895 aprint_error_dev(sc->sc_dev, "cannot disable rx dma\n"); 896 /* Wait 5ms extra. */ 897 delay(5000); 898 899 /* Finally, reset the ERX */ 900 bus_space_write_4(t, h, CAS_RESET, CAS_RESET_RX); 901 /* Wait till it finishes */ 902 if (!cas_bitwait(sc, h, CAS_RESET, CAS_RESET_RX, 0)) { 903 aprint_error_dev(sc->sc_dev, "cannot reset receiver\n"); 904 return (1); 905 } 906 return (0); 907 } 908 909 910 /* 911 * Reset the transmitter 912 */ 913 int 914 cas_reset_tx(struct cas_softc *sc) 915 { 916 bus_space_tag_t t = sc->sc_memt; 917 bus_space_handle_t h = sc->sc_memh; 918 919 /* 920 * Resetting while DMA is in progress can cause a bus hang, so we 921 * disable DMA first. 922 */ 923 cas_disable_tx(sc); 924 bus_space_write_4(t, h, CAS_TX_CONFIG, 0); 925 /* Wait till it finishes */ 926 if (!cas_bitwait(sc, h, CAS_TX_CONFIG, 1, 0)) 927 aprint_error_dev(sc->sc_dev, "cannot disable tx dma\n"); 928 /* Wait 5ms extra. */ 929 delay(5000); 930 931 /* Finally, reset the ETX */ 932 bus_space_write_4(t, h, CAS_RESET, CAS_RESET_TX); 933 /* Wait till it finishes */ 934 if (!cas_bitwait(sc, h, CAS_RESET, CAS_RESET_TX, 0)) { 935 aprint_error_dev(sc->sc_dev, "cannot reset transmitter\n"); 936 return (1); 937 } 938 return (0); 939 } 940 941 /* 942 * Disable receiver. 943 */ 944 int 945 cas_disable_rx(struct cas_softc *sc) 946 { 947 bus_space_tag_t t = sc->sc_memt; 948 bus_space_handle_t h = sc->sc_memh; 949 uint32_t cfg; 950 951 /* Flip the enable bit */ 952 cfg = bus_space_read_4(t, h, CAS_MAC_RX_CONFIG); 953 cfg &= ~CAS_MAC_RX_ENABLE; 954 bus_space_write_4(t, h, CAS_MAC_RX_CONFIG, cfg); 955 956 /* Wait for it to finish */ 957 return (cas_bitwait(sc, h, CAS_MAC_RX_CONFIG, CAS_MAC_RX_ENABLE, 0)); 958 } 959 960 /* 961 * Disable transmitter. 962 */ 963 int 964 cas_disable_tx(struct cas_softc *sc) 965 { 966 bus_space_tag_t t = sc->sc_memt; 967 bus_space_handle_t h = sc->sc_memh; 968 uint32_t cfg; 969 970 /* Flip the enable bit */ 971 cfg = bus_space_read_4(t, h, CAS_MAC_TX_CONFIG); 972 cfg &= ~CAS_MAC_TX_ENABLE; 973 bus_space_write_4(t, h, CAS_MAC_TX_CONFIG, cfg); 974 975 /* Wait for it to finish */ 976 return (cas_bitwait(sc, h, CAS_MAC_TX_CONFIG, CAS_MAC_TX_ENABLE, 0)); 977 } 978 979 /* 980 * Initialize interface. 981 */ 982 int 983 cas_meminit(struct cas_softc *sc) 984 { 985 int i; 986 987 /* 988 * Initialize the transmit descriptor ring. 989 */ 990 for (i = 0; i < CAS_NTXDESC; i++) { 991 sc->sc_txdescs[i].cd_flags = 0; 992 sc->sc_txdescs[i].cd_addr = 0; 993 } 994 CAS_CDTXSYNC(sc, 0, CAS_NTXDESC, 995 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 996 997 /* 998 * Initialize the receive descriptor and receive job 999 * descriptor rings. 1000 */ 1001 for (i = 0; i < CAS_NRXDESC; i++) 1002 CAS_INIT_RXDESC(sc, i, i); 1003 sc->sc_rxdptr = 0; 1004 sc->sc_rxptr = 0; 1005 1006 /* 1007 * Initialize the receive completion ring. 1008 */ 1009 for (i = 0; i < CAS_NRXCOMP; i++) { 1010 sc->sc_rxcomps[i].cc_word[0] = 0; 1011 sc->sc_rxcomps[i].cc_word[1] = 0; 1012 sc->sc_rxcomps[i].cc_word[2] = 0; 1013 sc->sc_rxcomps[i].cc_word[3] = CAS_DMA_WRITE(CAS_RC3_OWN); 1014 CAS_CDRXCSYNC(sc, i, 1015 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1016 } 1017 1018 return (0); 1019 } 1020 1021 int 1022 cas_ringsize(int sz) 1023 { 1024 switch (sz) { 1025 case 32: 1026 return CAS_RING_SZ_32; 1027 case 64: 1028 return CAS_RING_SZ_64; 1029 case 128: 1030 return CAS_RING_SZ_128; 1031 case 256: 1032 return CAS_RING_SZ_256; 1033 case 512: 1034 return CAS_RING_SZ_512; 1035 case 1024: 1036 return CAS_RING_SZ_1024; 1037 case 2048: 1038 return CAS_RING_SZ_2048; 1039 case 4096: 1040 return CAS_RING_SZ_4096; 1041 case 8192: 1042 return CAS_RING_SZ_8192; 1043 default: 1044 aprint_error("cas: invalid Receive Descriptor ring size %d\n", 1045 sz); 1046 return CAS_RING_SZ_32; 1047 } 1048 } 1049 1050 int 1051 cas_cringsize(int sz) 1052 { 1053 int i; 1054 1055 for (i = 0; i < 9; i++) 1056 if (sz == (128 << i)) 1057 return i; 1058 1059 aprint_error("cas: invalid completion ring size %d\n", sz); 1060 return 128; 1061 } 1062 1063 /* 1064 * Initialization of interface; set up initialization block 1065 * and transmit/receive descriptor rings. 1066 */ 1067 int 1068 cas_init(struct ifnet *ifp) 1069 { 1070 struct cas_softc *sc = (struct cas_softc *)ifp->if_softc; 1071 bus_space_tag_t t = sc->sc_memt; 1072 bus_space_handle_t h = sc->sc_memh; 1073 int s; 1074 u_int max_frame_size; 1075 uint32_t v; 1076 1077 s = splnet(); 1078 1079 DPRINTF(sc, ("%s: cas_init: calling stop\n", device_xname(sc->sc_dev))); 1080 /* 1081 * Initialization sequence. The numbered steps below correspond 1082 * to the sequence outlined in section 6.3.5.1 in the Ethernet 1083 * Channel Engine manual (part of the PCIO manual). 1084 * See also the STP2002-STQ document from Sun Microsystems. 1085 */ 1086 1087 /* step 1 & 2. Reset the Ethernet Channel */ 1088 cas_stop(ifp, 0); 1089 cas_reset(sc); 1090 DPRINTF(sc, ("%s: cas_init: restarting\n", device_xname(sc->sc_dev))); 1091 1092 /* Re-initialize the MIF */ 1093 cas_mifinit(sc); 1094 1095 /* step 3. Setup data structures in host memory */ 1096 cas_meminit(sc); 1097 1098 /* step 4. TX MAC registers & counters */ 1099 cas_init_regs(sc); 1100 max_frame_size = ETHER_MAX_LEN + ETHER_VLAN_ENCAP_LEN; 1101 v = (max_frame_size) | (0x2000 << 16) /* Burst size */; 1102 bus_space_write_4(t, h, CAS_MAC_MAC_MAX_FRAME, v); 1103 1104 /* step 5. RX MAC registers & counters */ 1105 cas_iff(sc); 1106 1107 /* step 6 & 7. Program Descriptor Ring Base Addresses */ 1108 KASSERT((CAS_CDTXADDR(sc, 0) & 0x1fff) == 0); 1109 bus_space_write_4(t, h, CAS_TX_RING_PTR_HI, 1110 (((uint64_t)CAS_CDTXADDR(sc, 0)) >> 32)); 1111 bus_space_write_4(t, h, CAS_TX_RING_PTR_LO, CAS_CDTXADDR(sc, 0)); 1112 1113 KASSERT((CAS_CDRXADDR(sc, 0) & 0x1fff) == 0); 1114 bus_space_write_4(t, h, CAS_RX_DRING_PTR_HI, 1115 (((uint64_t)CAS_CDRXADDR(sc, 0)) >> 32)); 1116 bus_space_write_4(t, h, CAS_RX_DRING_PTR_LO, CAS_CDRXADDR(sc, 0)); 1117 1118 KASSERT((CAS_CDRXCADDR(sc, 0) & 0x1fff) == 0); 1119 bus_space_write_4(t, h, CAS_RX_CRING_PTR_HI, 1120 (((uint64_t)CAS_CDRXCADDR(sc, 0)) >> 32)); 1121 bus_space_write_4(t, h, CAS_RX_CRING_PTR_LO, CAS_CDRXCADDR(sc, 0)); 1122 1123 if (CAS_PLUS(sc)) { 1124 KASSERT((CAS_CDRXADDR2(sc, 0) & 0x1fff) == 0); 1125 bus_space_write_4(t, h, CAS_RX_DRING_PTR_HI2, 1126 (((uint64_t)CAS_CDRXADDR2(sc, 0)) >> 32)); 1127 bus_space_write_4(t, h, CAS_RX_DRING_PTR_LO2, 1128 CAS_CDRXADDR2(sc, 0)); 1129 } 1130 1131 /* step 8. Global Configuration & Interrupt Mask */ 1132 cas_estintr(sc, CAS_INTR_REG); 1133 1134 /* step 9. ETX Configuration: use mostly default values */ 1135 1136 /* Enable DMA */ 1137 v = cas_ringsize(CAS_NTXDESC /*XXX*/) << 10; 1138 bus_space_write_4(t, h, CAS_TX_CONFIG, 1139 v | CAS_TX_CONFIG_TXDMA_EN | (1 << 24) | (1 << 29)); 1140 bus_space_write_4(t, h, CAS_TX_KICK, 0); 1141 1142 /* step 10. ERX Configuration */ 1143 1144 /* Encode Receive Descriptor ring size */ 1145 v = cas_ringsize(CAS_NRXDESC) << CAS_RX_CONFIG_RXDRNG_SZ_SHIFT; 1146 if (CAS_PLUS(sc)) 1147 v |= cas_ringsize(32) << CAS_RX_CONFIG_RXDRNG2_SZ_SHIFT; 1148 1149 /* Encode Receive Completion ring size */ 1150 v |= cas_cringsize(CAS_NRXCOMP) << CAS_RX_CONFIG_RXCRNG_SZ_SHIFT; 1151 1152 /* Enable DMA */ 1153 bus_space_write_4(t, h, CAS_RX_CONFIG, 1154 v|(2<<CAS_RX_CONFIG_FBOFF_SHFT) | CAS_RX_CONFIG_RXDMA_EN); 1155 1156 /* 1157 * The following value is for an OFF Threshold of about 3/4 full 1158 * and an ON Threshold of 1/4 full. 1159 */ 1160 bus_space_write_4(t, h, CAS_RX_PAUSE_THRESH, 1161 (3 * sc->sc_rxfifosize / 256) | 1162 ((sc->sc_rxfifosize / 256) << 12)); 1163 bus_space_write_4(t, h, CAS_RX_BLANKING, (6 << 12) | 6); 1164 1165 /* step 11. Configure Media */ 1166 mii_ifmedia_change(&sc->sc_mii); 1167 1168 /* step 12. RX_MAC Configuration Register */ 1169 v = bus_space_read_4(t, h, CAS_MAC_RX_CONFIG); 1170 v |= CAS_MAC_RX_ENABLE | CAS_MAC_RX_STRIP_CRC; 1171 bus_space_write_4(t, h, CAS_MAC_RX_CONFIG, v); 1172 1173 /* step 14. Issue Transmit Pending command */ 1174 1175 /* step 15. Give the receiver a swift kick */ 1176 bus_space_write_4(t, h, CAS_RX_KICK, CAS_NRXDESC-4); 1177 if (CAS_PLUS(sc)) 1178 bus_space_write_4(t, h, CAS_RX_KICK2, 4); 1179 1180 /* Start the one second timer. */ 1181 callout_reset(&sc->sc_tick_ch, hz, cas_tick, sc); 1182 1183 ifp->if_flags |= IFF_RUNNING; 1184 ifp->if_flags &= ~IFF_OACTIVE; 1185 ifp->if_timer = 0; 1186 splx(s); 1187 1188 return (0); 1189 } 1190 1191 void 1192 cas_init_regs(struct cas_softc *sc) 1193 { 1194 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1195 bus_space_tag_t t = sc->sc_memt; 1196 bus_space_handle_t h = sc->sc_memh; 1197 const u_char *laddr = CLLADDR(ifp->if_sadl); 1198 uint32_t v, r; 1199 1200 /* These regs are not cleared on reset */ 1201 sc->sc_inited = 0; 1202 if (!sc->sc_inited) { 1203 /* Load recommended values */ 1204 bus_space_write_4(t, h, CAS_MAC_IPG0, 0x00); 1205 bus_space_write_4(t, h, CAS_MAC_IPG1, 0x08); 1206 bus_space_write_4(t, h, CAS_MAC_IPG2, 0x04); 1207 1208 bus_space_write_4(t, h, CAS_MAC_MAC_MIN_FRAME, ETHER_MIN_LEN); 1209 /* Max frame and max burst size */ 1210 v = ETHER_MAX_LEN | (0x2000 << 16) /* Burst size */; 1211 bus_space_write_4(t, h, CAS_MAC_MAC_MAX_FRAME, v); 1212 1213 bus_space_write_4(t, h, CAS_MAC_PREAMBLE_LEN, 0x07); 1214 bus_space_write_4(t, h, CAS_MAC_JAM_SIZE, 0x04); 1215 bus_space_write_4(t, h, CAS_MAC_ATTEMPT_LIMIT, 0x10); 1216 bus_space_write_4(t, h, CAS_MAC_CONTROL_TYPE, 0x8088); 1217 bus_space_write_4(t, h, CAS_MAC_RANDOM_SEED, 1218 ((laddr[5]<<8)|laddr[4])&0x3ff); 1219 1220 /* Secondary MAC addresses set to 0:0:0:0:0:0 */ 1221 for (r = CAS_MAC_ADDR3; r < CAS_MAC_ADDR42; r += 4) 1222 bus_space_write_4(t, h, r, 0); 1223 1224 /* MAC control addr set to 0:1:c2:0:1:80 */ 1225 bus_space_write_4(t, h, CAS_MAC_ADDR42, 0x0001); 1226 bus_space_write_4(t, h, CAS_MAC_ADDR43, 0xc200); 1227 bus_space_write_4(t, h, CAS_MAC_ADDR44, 0x0180); 1228 1229 /* MAC filter addr set to 0:0:0:0:0:0 */ 1230 bus_space_write_4(t, h, CAS_MAC_ADDR_FILTER0, 0); 1231 bus_space_write_4(t, h, CAS_MAC_ADDR_FILTER1, 0); 1232 bus_space_write_4(t, h, CAS_MAC_ADDR_FILTER2, 0); 1233 1234 bus_space_write_4(t, h, CAS_MAC_ADR_FLT_MASK1_2, 0); 1235 bus_space_write_4(t, h, CAS_MAC_ADR_FLT_MASK0, 0); 1236 1237 /* Hash table initialized to 0 */ 1238 for (r = CAS_MAC_HASH0; r <= CAS_MAC_HASH15; r += 4) 1239 bus_space_write_4(t, h, r, 0); 1240 1241 sc->sc_inited = 1; 1242 } 1243 1244 /* Counters need to be zeroed */ 1245 bus_space_write_4(t, h, CAS_MAC_NORM_COLL_CNT, 0); 1246 bus_space_write_4(t, h, CAS_MAC_FIRST_COLL_CNT, 0); 1247 bus_space_write_4(t, h, CAS_MAC_EXCESS_COLL_CNT, 0); 1248 bus_space_write_4(t, h, CAS_MAC_LATE_COLL_CNT, 0); 1249 bus_space_write_4(t, h, CAS_MAC_DEFER_TMR_CNT, 0); 1250 bus_space_write_4(t, h, CAS_MAC_PEAK_ATTEMPTS, 0); 1251 bus_space_write_4(t, h, CAS_MAC_RX_FRAME_COUNT, 0); 1252 bus_space_write_4(t, h, CAS_MAC_RX_LEN_ERR_CNT, 0); 1253 bus_space_write_4(t, h, CAS_MAC_RX_ALIGN_ERR, 0); 1254 bus_space_write_4(t, h, CAS_MAC_RX_CRC_ERR_CNT, 0); 1255 bus_space_write_4(t, h, CAS_MAC_RX_CODE_VIOL, 0); 1256 1257 /* Un-pause stuff */ 1258 bus_space_write_4(t, h, CAS_MAC_SEND_PAUSE_CMD, 0); 1259 1260 /* 1261 * Set the station address. 1262 */ 1263 bus_space_write_4(t, h, CAS_MAC_ADDR0, (laddr[4]<<8) | laddr[5]); 1264 bus_space_write_4(t, h, CAS_MAC_ADDR1, (laddr[2]<<8) | laddr[3]); 1265 bus_space_write_4(t, h, CAS_MAC_ADDR2, (laddr[0]<<8) | laddr[1]); 1266 } 1267 1268 /* 1269 * Receive interrupt. 1270 */ 1271 int 1272 cas_rint(struct cas_softc *sc) 1273 { 1274 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1275 bus_space_tag_t t = sc->sc_memt; 1276 bus_space_handle_t h = sc->sc_memh; 1277 struct cas_rxsoft *rxs; 1278 struct mbuf *m; 1279 uint64_t word[4]; 1280 int len, off, idx; 1281 int i, skip; 1282 void *cp; 1283 1284 for (i = sc->sc_rxptr;; i = CAS_NEXTRX(i + skip)) { 1285 CAS_CDRXCSYNC(sc, i, 1286 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1287 1288 word[0] = CAS_DMA_READ(sc->sc_rxcomps[i].cc_word[0]); 1289 word[1] = CAS_DMA_READ(sc->sc_rxcomps[i].cc_word[1]); 1290 word[2] = CAS_DMA_READ(sc->sc_rxcomps[i].cc_word[2]); 1291 word[3] = CAS_DMA_READ(sc->sc_rxcomps[i].cc_word[3]); 1292 1293 /* Stop if the hardware still owns the descriptor. */ 1294 if ((word[0] & CAS_RC0_TYPE) == 0 || word[3] & CAS_RC3_OWN) 1295 break; 1296 1297 len = CAS_RC1_HDR_LEN(word[1]); 1298 if (len > 0) { 1299 off = CAS_RC1_HDR_OFF(word[1]); 1300 idx = CAS_RC1_HDR_IDX(word[1]); 1301 rxs = &sc->sc_rxsoft[idx]; 1302 1303 DPRINTF(sc, ("hdr at idx %d, off %d, len %d\n", 1304 idx, off, len)); 1305 1306 bus_dmamap_sync(sc->sc_dmatag, rxs->rxs_dmamap, 0, 1307 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1308 1309 cp = rxs->rxs_kva + off * 256 + ETHER_ALIGN; 1310 m = m_devget(cp, len, 0, ifp); 1311 1312 if (word[0] & CAS_RC0_RELEASE_HDR) 1313 cas_add_rxbuf(sc, idx); 1314 1315 if (m != NULL) { 1316 1317 /* 1318 * Pass this up to any BPF listeners, but only 1319 * pass it up the stack if its for us. 1320 */ 1321 m->m_pkthdr.csum_flags = 0; 1322 if_percpuq_enqueue(ifp->if_percpuq, m); 1323 } else 1324 ifp->if_ierrors++; 1325 } 1326 1327 len = CAS_RC0_DATA_LEN(word[0]); 1328 if (len > 0) { 1329 off = CAS_RC0_DATA_OFF(word[0]); 1330 idx = CAS_RC0_DATA_IDX(word[0]); 1331 rxs = &sc->sc_rxsoft[idx]; 1332 1333 DPRINTF(sc, ("data at idx %d, off %d, len %d\n", 1334 idx, off, len)); 1335 1336 bus_dmamap_sync(sc->sc_dmatag, rxs->rxs_dmamap, 0, 1337 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1338 1339 /* XXX We should not be copying the packet here. */ 1340 cp = rxs->rxs_kva + off + ETHER_ALIGN; 1341 m = m_devget(cp, len, 0, ifp); 1342 1343 if (word[0] & CAS_RC0_RELEASE_DATA) 1344 cas_add_rxbuf(sc, idx); 1345 1346 if (m != NULL) { 1347 /* 1348 * Pass this up to any BPF listeners, but only 1349 * pass it up the stack if its for us. 1350 */ 1351 m->m_pkthdr.csum_flags = 0; 1352 if_percpuq_enqueue(ifp->if_percpuq, m); 1353 } else 1354 ifp->if_ierrors++; 1355 } 1356 1357 if (word[0] & CAS_RC0_SPLIT) 1358 aprint_error_dev(sc->sc_dev, "split packet\n"); 1359 1360 skip = CAS_RC0_SKIP(word[0]); 1361 } 1362 1363 while (sc->sc_rxptr != i) { 1364 sc->sc_rxcomps[sc->sc_rxptr].cc_word[0] = 0; 1365 sc->sc_rxcomps[sc->sc_rxptr].cc_word[1] = 0; 1366 sc->sc_rxcomps[sc->sc_rxptr].cc_word[2] = 0; 1367 sc->sc_rxcomps[sc->sc_rxptr].cc_word[3] = 1368 CAS_DMA_WRITE(CAS_RC3_OWN); 1369 CAS_CDRXCSYNC(sc, sc->sc_rxptr, 1370 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1371 1372 sc->sc_rxptr = CAS_NEXTRX(sc->sc_rxptr); 1373 } 1374 1375 bus_space_write_4(t, h, CAS_RX_COMP_TAIL, sc->sc_rxptr); 1376 1377 DPRINTF(sc, ("cas_rint: done sc->rxptr %d, complete %d\n", 1378 sc->sc_rxptr, bus_space_read_4(t, h, CAS_RX_COMPLETION))); 1379 1380 return (1); 1381 } 1382 1383 /* 1384 * cas_add_rxbuf: 1385 * 1386 * Add a receive buffer to the indicated descriptor. 1387 */ 1388 int 1389 cas_add_rxbuf(struct cas_softc *sc, int idx) 1390 { 1391 bus_space_tag_t t = sc->sc_memt; 1392 bus_space_handle_t h = sc->sc_memh; 1393 1394 CAS_INIT_RXDESC(sc, sc->sc_rxdptr, idx); 1395 1396 if ((sc->sc_rxdptr % 4) == 0) 1397 bus_space_write_4(t, h, CAS_RX_KICK, sc->sc_rxdptr); 1398 1399 if (++sc->sc_rxdptr == CAS_NRXDESC) 1400 sc->sc_rxdptr = 0; 1401 1402 return (0); 1403 } 1404 1405 int 1406 cas_eint(struct cas_softc *sc, u_int status) 1407 { 1408 char bits[128]; 1409 if ((status & CAS_INTR_MIF) != 0) { 1410 DPRINTF(sc, ("%s: link status changed\n", 1411 device_xname(sc->sc_dev))); 1412 return (1); 1413 } 1414 1415 snprintb(bits, sizeof(bits), CAS_INTR_BITS, status); 1416 printf("%s: status=%s\n", device_xname(sc->sc_dev), bits); 1417 return (1); 1418 } 1419 1420 int 1421 cas_pint(struct cas_softc *sc) 1422 { 1423 bus_space_tag_t t = sc->sc_memt; 1424 bus_space_handle_t seb = sc->sc_memh; 1425 uint32_t status; 1426 1427 status = bus_space_read_4(t, seb, CAS_MII_INTERRUP_STATUS); 1428 status |= bus_space_read_4(t, seb, CAS_MII_INTERRUP_STATUS); 1429 #ifdef CAS_DEBUG 1430 if (status) 1431 printf("%s: link status changed\n", device_xname(sc->sc_dev)); 1432 #endif 1433 return (1); 1434 } 1435 1436 int 1437 cas_intr(void *v) 1438 { 1439 struct cas_softc *sc = (struct cas_softc *)v; 1440 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1441 bus_space_tag_t t = sc->sc_memt; 1442 bus_space_handle_t seb = sc->sc_memh; 1443 uint32_t status; 1444 int r = 0; 1445 #ifdef CAS_DEBUG 1446 char bits[128]; 1447 #endif 1448 1449 sc->sc_ev_intr.ev_count++; 1450 1451 status = bus_space_read_4(t, seb, CAS_STATUS); 1452 #ifdef CAS_DEBUG 1453 snprintb(bits, sizeof(bits), CAS_INTR_BITS, status); 1454 #endif 1455 DPRINTF(sc, ("%s: cas_intr: cplt %x status %s\n", 1456 device_xname(sc->sc_dev), (status>>19), bits)); 1457 1458 if ((status & CAS_INTR_PCS) != 0) 1459 r |= cas_pint(sc); 1460 1461 if ((status & (CAS_INTR_TX_TAG_ERR | CAS_INTR_RX_TAG_ERR | 1462 CAS_INTR_RX_COMP_FULL | CAS_INTR_BERR)) != 0) 1463 r |= cas_eint(sc, status); 1464 1465 if ((status & (CAS_INTR_TX_EMPTY | CAS_INTR_TX_INTME)) != 0) 1466 r |= cas_tint(sc, status); 1467 1468 if ((status & (CAS_INTR_RX_DONE | CAS_INTR_RX_NOBUF)) != 0) 1469 r |= cas_rint(sc); 1470 1471 /* We should eventually do more than just print out error stats. */ 1472 if (status & CAS_INTR_TX_MAC) { 1473 int txstat = bus_space_read_4(t, seb, CAS_MAC_TX_STATUS); 1474 #ifdef CAS_DEBUG 1475 if (txstat & ~CAS_MAC_TX_XMIT_DONE) 1476 printf("%s: MAC tx fault, status %x\n", 1477 device_xname(sc->sc_dev), txstat); 1478 #endif 1479 if (txstat & (CAS_MAC_TX_UNDERRUN | CAS_MAC_TX_PKT_TOO_LONG)) 1480 cas_init(ifp); 1481 } 1482 if (status & CAS_INTR_RX_MAC) { 1483 int rxstat = bus_space_read_4(t, seb, CAS_MAC_RX_STATUS); 1484 #ifdef CAS_DEBUG 1485 if (rxstat & ~CAS_MAC_RX_DONE) 1486 printf("%s: MAC rx fault, status %x\n", 1487 device_xname(sc->sc_dev), rxstat); 1488 #endif 1489 /* 1490 * On some chip revisions CAS_MAC_RX_OVERFLOW happen often 1491 * due to a silicon bug so handle them silently. 1492 */ 1493 if (rxstat & CAS_MAC_RX_OVERFLOW) { 1494 ifp->if_ierrors++; 1495 cas_init(ifp); 1496 } 1497 #ifdef CAS_DEBUG 1498 else if (rxstat & ~(CAS_MAC_RX_DONE | CAS_MAC_RX_FRAME_CNT)) 1499 printf("%s: MAC rx fault, status %x\n", 1500 device_xname(sc->sc_dev), rxstat); 1501 #endif 1502 } 1503 rnd_add_uint32(&sc->rnd_source, status); 1504 return (r); 1505 } 1506 1507 1508 void 1509 cas_watchdog(struct ifnet *ifp) 1510 { 1511 struct cas_softc *sc = ifp->if_softc; 1512 1513 DPRINTF(sc, ("cas_watchdog: CAS_RX_CONFIG %x CAS_MAC_RX_STATUS %x " 1514 "CAS_MAC_RX_CONFIG %x\n", 1515 bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_RX_CONFIG), 1516 bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_MAC_RX_STATUS), 1517 bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_MAC_RX_CONFIG))); 1518 1519 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 1520 ++ifp->if_oerrors; 1521 1522 /* Try to get more packets going. */ 1523 cas_init(ifp); 1524 } 1525 1526 /* 1527 * Initialize the MII Management Interface 1528 */ 1529 void 1530 cas_mifinit(struct cas_softc *sc) 1531 { 1532 bus_space_tag_t t = sc->sc_memt; 1533 bus_space_handle_t mif = sc->sc_memh; 1534 1535 /* Configure the MIF in frame mode */ 1536 sc->sc_mif_config = bus_space_read_4(t, mif, CAS_MIF_CONFIG); 1537 sc->sc_mif_config &= ~CAS_MIF_CONFIG_BB_ENA; 1538 bus_space_write_4(t, mif, CAS_MIF_CONFIG, sc->sc_mif_config); 1539 } 1540 1541 /* 1542 * MII interface 1543 * 1544 * The Cassini MII interface supports at least three different operating modes: 1545 * 1546 * Bitbang mode is implemented using data, clock and output enable registers. 1547 * 1548 * Frame mode is implemented by loading a complete frame into the frame 1549 * register and polling the valid bit for completion. 1550 * 1551 * Polling mode uses the frame register but completion is indicated by 1552 * an interrupt. 1553 * 1554 */ 1555 int 1556 cas_mii_readreg(device_t self, int phy, int reg, uint16_t *val) 1557 { 1558 struct cas_softc *sc = device_private(self); 1559 bus_space_tag_t t = sc->sc_memt; 1560 bus_space_handle_t mif = sc->sc_memh; 1561 int n; 1562 uint32_t v; 1563 1564 #ifdef CAS_DEBUG 1565 if (sc->sc_debug) 1566 printf("cas_mii_readreg: phy %d reg %d\n", phy, reg); 1567 #endif 1568 1569 /* Construct the frame command */ 1570 v = (reg << CAS_MIF_REG_SHIFT) | (phy << CAS_MIF_PHY_SHIFT) | 1571 CAS_MIF_FRAME_READ; 1572 1573 bus_space_write_4(t, mif, CAS_MIF_FRAME, v); 1574 for (n = 0; n < 100; n++) { 1575 DELAY(1); 1576 v = bus_space_read_4(t, mif, CAS_MIF_FRAME); 1577 if (v & CAS_MIF_FRAME_TA0) { 1578 *val = v & CAS_MIF_FRAME_DATA; 1579 return 0; 1580 } 1581 } 1582 1583 printf("%s: mii_read timeout\n", device_xname(sc->sc_dev)); 1584 return ETIMEDOUT; 1585 } 1586 1587 int 1588 cas_mii_writereg(device_t self, int phy, int reg, uint16_t val) 1589 { 1590 struct cas_softc *sc = device_private(self); 1591 bus_space_tag_t t = sc->sc_memt; 1592 bus_space_handle_t mif = sc->sc_memh; 1593 int n; 1594 uint32_t v; 1595 1596 #ifdef CAS_DEBUG 1597 if (sc->sc_debug) 1598 printf("cas_mii_writereg: phy %d reg %d val %x\n", 1599 phy, reg, val); 1600 #endif 1601 1602 /* Construct the frame command */ 1603 v = CAS_MIF_FRAME_WRITE | 1604 (phy << CAS_MIF_PHY_SHIFT) | 1605 (reg << CAS_MIF_REG_SHIFT) | 1606 (val & CAS_MIF_FRAME_DATA); 1607 1608 bus_space_write_4(t, mif, CAS_MIF_FRAME, v); 1609 for (n = 0; n < 100; n++) { 1610 DELAY(1); 1611 v = bus_space_read_4(t, mif, CAS_MIF_FRAME); 1612 if (v & CAS_MIF_FRAME_TA0) 1613 return 0; 1614 } 1615 1616 printf("%s: mii_write timeout\n", device_xname(sc->sc_dev)); 1617 return ETIMEDOUT; 1618 } 1619 1620 void 1621 cas_mii_statchg(struct ifnet *ifp) 1622 { 1623 struct cas_softc *sc = ifp->if_softc; 1624 #ifdef CAS_DEBUG 1625 int instance = IFM_INST(sc->sc_media.ifm_cur->ifm_media); 1626 #endif 1627 bus_space_tag_t t = sc->sc_memt; 1628 bus_space_handle_t mac = sc->sc_memh; 1629 uint32_t v; 1630 1631 #ifdef CAS_DEBUG 1632 if (sc->sc_debug) 1633 printf("cas_mii_statchg: status change: phy = %d\n", 1634 sc->sc_phys[instance]); 1635 #endif 1636 1637 /* Set tx full duplex options */ 1638 bus_space_write_4(t, mac, CAS_MAC_TX_CONFIG, 0); 1639 delay(10000); /* reg must be cleared and delay before changing. */ 1640 v = CAS_MAC_TX_ENA_IPG0 | CAS_MAC_TX_NGU | CAS_MAC_TX_NGU_LIMIT | 1641 CAS_MAC_TX_ENABLE; 1642 if ((IFM_OPTIONS(sc->sc_mii.mii_media_active) & IFM_FDX) != 0) { 1643 v |= CAS_MAC_TX_IGN_CARRIER | CAS_MAC_TX_IGN_COLLIS; 1644 } 1645 bus_space_write_4(t, mac, CAS_MAC_TX_CONFIG, v); 1646 1647 /* XIF Configuration */ 1648 v = CAS_MAC_XIF_TX_MII_ENA; 1649 v |= CAS_MAC_XIF_LINK_LED; 1650 1651 /* MII needs echo disable if half duplex. */ 1652 if ((IFM_OPTIONS(sc->sc_mii.mii_media_active) & IFM_FDX) != 0) 1653 /* turn on full duplex LED */ 1654 v |= CAS_MAC_XIF_FDPLX_LED; 1655 else 1656 /* half duplex -- disable echo */ 1657 v |= CAS_MAC_XIF_ECHO_DISABL; 1658 1659 switch (IFM_SUBTYPE(sc->sc_mii.mii_media_active)) { 1660 case IFM_1000_T: /* Gigabit using GMII interface */ 1661 case IFM_1000_SX: 1662 v |= CAS_MAC_XIF_GMII_MODE; 1663 break; 1664 default: 1665 v &= ~CAS_MAC_XIF_GMII_MODE; 1666 } 1667 bus_space_write_4(t, mac, CAS_MAC_XIF_CONFIG, v); 1668 } 1669 1670 int 1671 cas_pcs_readreg(device_t self, int phy, int reg, uint16_t *val) 1672 { 1673 struct cas_softc *sc = device_private(self); 1674 bus_space_tag_t t = sc->sc_memt; 1675 bus_space_handle_t pcs = sc->sc_memh; 1676 1677 #ifdef CAS_DEBUG 1678 if (sc->sc_debug) 1679 printf("cas_pcs_readreg: phy %d reg %d\n", phy, reg); 1680 #endif 1681 1682 if (phy != CAS_PHYAD_EXTERNAL) 1683 return -1; 1684 1685 switch (reg) { 1686 case MII_BMCR: 1687 reg = CAS_MII_CONTROL; 1688 break; 1689 case MII_BMSR: 1690 reg = CAS_MII_STATUS; 1691 break; 1692 case MII_ANAR: 1693 reg = CAS_MII_ANAR; 1694 break; 1695 case MII_ANLPAR: 1696 reg = CAS_MII_ANLPAR; 1697 break; 1698 case MII_EXTSR: 1699 *val = EXTSR_1000XFDX | EXTSR_1000XHDX; 1700 return 0; 1701 default: 1702 return (0); 1703 } 1704 1705 *val = bus_space_read_4(t, pcs, reg) & 0xffff; 1706 return 0; 1707 } 1708 1709 int 1710 cas_pcs_writereg(device_t self, int phy, int reg, uint16_t val) 1711 { 1712 struct cas_softc *sc = device_private(self); 1713 bus_space_tag_t t = sc->sc_memt; 1714 bus_space_handle_t pcs = sc->sc_memh; 1715 int reset = 0; 1716 1717 #ifdef CAS_DEBUG 1718 if (sc->sc_debug) 1719 printf("cas_pcs_writereg: phy %d reg %d val %x\n", 1720 phy, reg, val); 1721 #endif 1722 1723 if (phy != CAS_PHYAD_EXTERNAL) 1724 return -1; 1725 1726 if (reg == MII_ANAR) 1727 bus_space_write_4(t, pcs, CAS_MII_CONFIG, 0); 1728 1729 switch (reg) { 1730 case MII_BMCR: 1731 reset = (val & CAS_MII_CONTROL_RESET); 1732 reg = CAS_MII_CONTROL; 1733 break; 1734 case MII_BMSR: 1735 reg = CAS_MII_STATUS; 1736 break; 1737 case MII_ANAR: 1738 reg = CAS_MII_ANAR; 1739 break; 1740 case MII_ANLPAR: 1741 reg = CAS_MII_ANLPAR; 1742 break; 1743 default: 1744 return 0; 1745 } 1746 1747 bus_space_write_4(t, pcs, reg, val); 1748 1749 if (reset) 1750 cas_bitwait(sc, pcs, CAS_MII_CONTROL, CAS_MII_CONTROL_RESET, 0); 1751 1752 if (reg == CAS_MII_ANAR || reset) 1753 bus_space_write_4(t, pcs, CAS_MII_CONFIG, 1754 CAS_MII_CONFIG_ENABLE); 1755 1756 return 0; 1757 } 1758 1759 int 1760 cas_mediachange(struct ifnet *ifp) 1761 { 1762 struct cas_softc *sc = ifp->if_softc; 1763 struct mii_data *mii = &sc->sc_mii; 1764 1765 if (mii->mii_instance) { 1766 struct mii_softc *miisc; 1767 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 1768 mii_phy_reset(miisc); 1769 } 1770 1771 return (mii_mediachg(&sc->sc_mii)); 1772 } 1773 1774 void 1775 cas_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 1776 { 1777 struct cas_softc *sc = ifp->if_softc; 1778 1779 mii_pollstat(&sc->sc_mii); 1780 ifmr->ifm_active = sc->sc_mii.mii_media_active; 1781 ifmr->ifm_status = sc->sc_mii.mii_media_status; 1782 } 1783 1784 /* 1785 * Process an ioctl request. 1786 */ 1787 int 1788 cas_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1789 { 1790 struct cas_softc *sc = ifp->if_softc; 1791 int s, error = 0; 1792 1793 s = splnet(); 1794 1795 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1796 error = 0; 1797 if (cmd != SIOCADDMULTI && cmd != SIOCDELMULTI) 1798 ; 1799 else if (ifp->if_flags & IFF_RUNNING) { 1800 /* 1801 * Multicast list has changed; set the hardware filter 1802 * accordingly. 1803 */ 1804 cas_iff(sc); 1805 } 1806 } 1807 1808 splx(s); 1809 return (error); 1810 } 1811 1812 static bool 1813 cas_suspend(device_t self, const pmf_qual_t *qual) 1814 { 1815 struct cas_softc *sc = device_private(self); 1816 bus_space_tag_t t = sc->sc_memt; 1817 bus_space_handle_t h = sc->sc_memh; 1818 1819 bus_space_write_4(t, h, CAS_INTMASK, ~(uint32_t)0); 1820 if (sc->sc_ih != NULL) { 1821 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 1822 sc->sc_ih = NULL; 1823 } 1824 1825 return true; 1826 } 1827 1828 static bool 1829 cas_resume(device_t self, const pmf_qual_t *qual) 1830 { 1831 struct cas_softc *sc = device_private(self); 1832 1833 return cas_estintr(sc, CAS_INTR_PCI | CAS_INTR_REG); 1834 } 1835 1836 static bool 1837 cas_estintr(struct cas_softc *sc, int what) 1838 { 1839 bus_space_tag_t t = sc->sc_memt; 1840 bus_space_handle_t h = sc->sc_memh; 1841 const char *intrstr = NULL; 1842 char intrbuf[PCI_INTRSTR_LEN]; 1843 1844 /* PCI interrupts */ 1845 if (what & CAS_INTR_PCI) { 1846 intrstr = pci_intr_string(sc->sc_pc, sc->sc_handle, intrbuf, 1847 sizeof(intrbuf)); 1848 sc->sc_ih = pci_intr_establish_xname(sc->sc_pc, sc->sc_handle, 1849 IPL_NET, cas_intr, sc, device_xname(sc->sc_dev)); 1850 if (sc->sc_ih == NULL) { 1851 aprint_error_dev(sc->sc_dev, 1852 "unable to establish interrupt"); 1853 if (intrstr != NULL) 1854 aprint_error(" at %s", intrstr); 1855 aprint_error("\n"); 1856 return false; 1857 } 1858 1859 aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr); 1860 } 1861 1862 /* Interrupt register */ 1863 if (what & CAS_INTR_REG) { 1864 bus_space_write_4(t, h, CAS_INTMASK, 1865 ~(CAS_INTR_TX_INTME | CAS_INTR_TX_EMPTY | 1866 CAS_INTR_TX_TAG_ERR | 1867 CAS_INTR_RX_DONE | CAS_INTR_RX_NOBUF | 1868 CAS_INTR_RX_TAG_ERR | 1869 CAS_INTR_RX_COMP_FULL | CAS_INTR_PCS | 1870 CAS_INTR_MAC_CONTROL | CAS_INTR_MIF | 1871 CAS_INTR_BERR)); 1872 bus_space_write_4(t, h, CAS_MAC_RX_MASK, 1873 CAS_MAC_RX_DONE | CAS_MAC_RX_FRAME_CNT); 1874 bus_space_write_4(t, h, CAS_MAC_TX_MASK, CAS_MAC_TX_XMIT_DONE); 1875 bus_space_write_4(t, h, CAS_MAC_CONTROL_MASK, 0); /* XXXX */ 1876 } 1877 return true; 1878 } 1879 1880 bool 1881 cas_shutdown(device_t self, int howto) 1882 { 1883 struct cas_softc *sc = device_private(self); 1884 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1885 1886 cas_stop(ifp, 1); 1887 1888 return true; 1889 } 1890 1891 void 1892 cas_iff(struct cas_softc *sc) 1893 { 1894 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1895 struct ethercom *ec = &sc->sc_ethercom; 1896 struct ether_multi *enm; 1897 struct ether_multistep step; 1898 bus_space_tag_t t = sc->sc_memt; 1899 bus_space_handle_t h = sc->sc_memh; 1900 uint32_t crc, hash[16], rxcfg; 1901 int i; 1902 1903 rxcfg = bus_space_read_4(t, h, CAS_MAC_RX_CONFIG); 1904 rxcfg &= ~(CAS_MAC_RX_HASH_FILTER | CAS_MAC_RX_PROMISCUOUS | 1905 CAS_MAC_RX_PROMISC_GRP); 1906 ifp->if_flags &= ~IFF_ALLMULTI; 1907 1908 if (ifp->if_flags & IFF_PROMISC || ec->ec_multicnt > 0) { 1909 ifp->if_flags |= IFF_ALLMULTI; 1910 if (ifp->if_flags & IFF_PROMISC) 1911 rxcfg |= CAS_MAC_RX_PROMISCUOUS; 1912 else 1913 rxcfg |= CAS_MAC_RX_PROMISC_GRP; 1914 } else { 1915 /* 1916 * Set up multicast address filter by passing all multicast 1917 * addresses through a crc generator, and then using the 1918 * high order 8 bits as an index into the 256 bit logical 1919 * address filter. The high order 4 bits selects the word, 1920 * while the other 4 bits select the bit within the word 1921 * (where bit 0 is the MSB). 1922 */ 1923 1924 rxcfg |= CAS_MAC_RX_HASH_FILTER; 1925 1926 /* Clear hash table */ 1927 for (i = 0; i < 16; i++) 1928 hash[i] = 0; 1929 1930 ETHER_FIRST_MULTI(step, ec, enm); 1931 while (enm != NULL) { 1932 crc = ether_crc32_le(enm->enm_addrlo, 1933 ETHER_ADDR_LEN); 1934 1935 /* Just want the 8 most significant bits. */ 1936 crc >>= 24; 1937 1938 /* Set the corresponding bit in the filter. */ 1939 hash[crc >> 4] |= 1 << (15 - (crc & 15)); 1940 1941 ETHER_NEXT_MULTI(step, enm); 1942 } 1943 1944 /* Now load the hash table into the chip (if we are using it) */ 1945 for (i = 0; i < 16; i++) { 1946 bus_space_write_4(t, h, 1947 CAS_MAC_HASH0 + i * (CAS_MAC_HASH1 - CAS_MAC_HASH0), 1948 hash[i]); 1949 } 1950 } 1951 1952 bus_space_write_4(t, h, CAS_MAC_RX_CONFIG, rxcfg); 1953 } 1954 1955 int 1956 cas_encap(struct cas_softc *sc, struct mbuf *mhead, uint32_t *bixp) 1957 { 1958 uint64_t flags; 1959 uint32_t cur, frag, i; 1960 bus_dmamap_t map; 1961 1962 cur = frag = *bixp; 1963 map = sc->sc_txd[cur].sd_map; 1964 1965 if (bus_dmamap_load_mbuf(sc->sc_dmatag, map, mhead, 1966 BUS_DMA_NOWAIT) != 0) { 1967 return (ENOBUFS); 1968 } 1969 1970 if ((sc->sc_tx_cnt + map->dm_nsegs) > (CAS_NTXDESC - 2)) { 1971 bus_dmamap_unload(sc->sc_dmatag, map); 1972 return (ENOBUFS); 1973 } 1974 1975 bus_dmamap_sync(sc->sc_dmatag, map, 0, map->dm_mapsize, 1976 BUS_DMASYNC_PREWRITE); 1977 1978 for (i = 0; i < map->dm_nsegs; i++) { 1979 sc->sc_txdescs[frag].cd_addr = 1980 CAS_DMA_WRITE(map->dm_segs[i].ds_addr); 1981 flags = (map->dm_segs[i].ds_len & CAS_TD_BUFSIZE) | 1982 (i == 0 ? CAS_TD_START_OF_PACKET : 0) | 1983 ((i == (map->dm_nsegs - 1)) ? CAS_TD_END_OF_PACKET : 0); 1984 sc->sc_txdescs[frag].cd_flags = CAS_DMA_WRITE(flags); 1985 bus_dmamap_sync(sc->sc_dmatag, sc->sc_cddmamap, 1986 CAS_CDTXOFF(frag), sizeof(struct cas_desc), 1987 BUS_DMASYNC_PREWRITE); 1988 cur = frag; 1989 if (++frag == CAS_NTXDESC) 1990 frag = 0; 1991 } 1992 1993 sc->sc_tx_cnt += map->dm_nsegs; 1994 sc->sc_txd[*bixp].sd_map = sc->sc_txd[cur].sd_map; 1995 sc->sc_txd[cur].sd_map = map; 1996 sc->sc_txd[cur].sd_mbuf = mhead; 1997 1998 bus_space_write_4(sc->sc_memt, sc->sc_memh, CAS_TX_KICK, frag); 1999 2000 *bixp = frag; 2001 2002 /* sync descriptors */ 2003 2004 return (0); 2005 } 2006 2007 /* 2008 * Transmit interrupt. 2009 */ 2010 int 2011 cas_tint(struct cas_softc *sc, uint32_t status) 2012 { 2013 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 2014 struct cas_sxd *sd; 2015 uint32_t cons, comp; 2016 2017 comp = bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_TX_COMPLETION); 2018 cons = sc->sc_tx_cons; 2019 while (cons != comp) { 2020 sd = &sc->sc_txd[cons]; 2021 if (sd->sd_mbuf != NULL) { 2022 bus_dmamap_sync(sc->sc_dmatag, sd->sd_map, 0, 2023 sd->sd_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 2024 bus_dmamap_unload(sc->sc_dmatag, sd->sd_map); 2025 m_freem(sd->sd_mbuf); 2026 sd->sd_mbuf = NULL; 2027 ifp->if_opackets++; 2028 } 2029 sc->sc_tx_cnt--; 2030 if (++cons == CAS_NTXDESC) 2031 cons = 0; 2032 } 2033 sc->sc_tx_cons = cons; 2034 2035 if (sc->sc_tx_cnt < CAS_NTXDESC - 2) 2036 ifp->if_flags &= ~IFF_OACTIVE; 2037 if (sc->sc_tx_cnt == 0) 2038 ifp->if_timer = 0; 2039 2040 if_schedule_deferred_start(ifp); 2041 2042 return (1); 2043 } 2044 2045 void 2046 cas_start(struct ifnet *ifp) 2047 { 2048 struct cas_softc *sc = ifp->if_softc; 2049 struct mbuf *m; 2050 uint32_t bix; 2051 2052 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 2053 return; 2054 2055 bix = sc->sc_tx_prod; 2056 while (sc->sc_txd[bix].sd_mbuf == NULL) { 2057 IFQ_POLL(&ifp->if_snd, m); 2058 if (m == NULL) 2059 break; 2060 2061 /* 2062 * If BPF is listening on this interface, let it see the 2063 * packet before we commit it to the wire. 2064 */ 2065 bpf_mtap(ifp, m, BPF_D_OUT); 2066 2067 /* 2068 * Encapsulate this packet and start it going... 2069 * or fail... 2070 */ 2071 if (cas_encap(sc, m, &bix)) { 2072 ifp->if_flags |= IFF_OACTIVE; 2073 break; 2074 } 2075 2076 IFQ_DEQUEUE(&ifp->if_snd, m); 2077 ifp->if_timer = 5; 2078 } 2079 2080 sc->sc_tx_prod = bix; 2081 } 2082 2083 MODULE(MODULE_CLASS_DRIVER, if_cas, "pci"); 2084 2085 #ifdef _MODULE 2086 #include "ioconf.c" 2087 #endif 2088 2089 static int 2090 if_cas_modcmd(modcmd_t cmd, void *opaque) 2091 { 2092 int error = 0; 2093 2094 switch (cmd) { 2095 case MODULE_CMD_INIT: 2096 #ifdef _MODULE 2097 error = config_init_component(cfdriver_ioconf_cas, 2098 cfattach_ioconf_cas, cfdata_ioconf_cas); 2099 #endif 2100 return error; 2101 case MODULE_CMD_FINI: 2102 #ifdef _MODULE 2103 error = config_fini_component(cfdriver_ioconf_cas, 2104 cfattach_ioconf_cas, cfdata_ioconf_cas); 2105 #endif 2106 return error; 2107 default: 2108 return ENOTTY; 2109 } 2110 } 2111
Indexes created Wed Sep 24 15:09:51 GMT 2025