if_cas.c revision 1.30
1/* $NetBSD: if_cas.c,v 1.30 2019/01/22 03:42:27 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 1.30 2019/01/22 03:42:27 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 102static bool cas_estintr(struct cas_softc *sc, int); 103bool cas_shutdown(device_t, int); 104static bool cas_suspend(device_t, const pmf_qual_t *); 105static bool cas_resume(device_t, const pmf_qual_t *); 106static int cas_detach(device_t, int); 107static void cas_partial_detach(struct cas_softc *, enum cas_attach_stage); 108 109int cas_match(device_t, cfdata_t, void *); 110void cas_attach(device_t, device_t, void *); 111 112 113CFATTACH_DECL3_NEW(cas, sizeof(struct cas_softc), 114 cas_match, cas_attach, cas_detach, NULL, NULL, NULL, 115 DVF_DETACH_SHUTDOWN); 116 117int cas_pci_enaddr(struct cas_softc *, struct pci_attach_args *, uint8_t *); 118 119void cas_config(struct cas_softc *, const uint8_t *); 120void cas_start(struct ifnet *); 121void cas_stop(struct ifnet *, int); 122int cas_ioctl(struct ifnet *, u_long, void *); 123void cas_tick(void *); 124void cas_watchdog(struct ifnet *); 125int cas_init(struct ifnet *); 126void cas_init_regs(struct cas_softc *); 127int cas_ringsize(int); 128int cas_cringsize(int); 129int cas_meminit(struct cas_softc *); 130void cas_mifinit(struct cas_softc *); 131int cas_bitwait(struct cas_softc *, bus_space_handle_t, int, 132 u_int32_t, u_int32_t); 133void cas_reset(struct cas_softc *); 134int cas_reset_rx(struct cas_softc *); 135int cas_reset_tx(struct cas_softc *); 136int cas_disable_rx(struct cas_softc *); 137int cas_disable_tx(struct cas_softc *); 138void cas_rxdrain(struct cas_softc *); 139int cas_add_rxbuf(struct cas_softc *, int idx); 140void cas_iff(struct cas_softc *); 141int cas_encap(struct cas_softc *, struct mbuf *, u_int32_t *); 142 143/* MII methods & callbacks */ 144int cas_mii_readreg(device_t, int, int, uint16_t*); 145int cas_mii_writereg(device_t, int, int, uint16_t); 146void cas_mii_statchg(struct ifnet *); 147int cas_pcs_readreg(device_t, int, int, uint16_t *); 148int cas_pcs_writereg(device_t, int, int, uint16_t); 149 150int cas_mediachange(struct ifnet *); 151void cas_mediastatus(struct ifnet *, struct ifmediareq *); 152 153int cas_eint(struct cas_softc *, u_int); 154int cas_rint(struct cas_softc *); 155int cas_tint(struct cas_softc *, u_int32_t); 156int cas_pint(struct cas_softc *); 157int 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 166int 167cas_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 186static const u_int8_t cas_promhdr[] = { 0x55, 0xaa }; 187static 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}; 192static 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 198static 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 206int 207cas_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 246next: 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 320void 321cas_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 */ 388void 389cas_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 if_deferred_start_init(ifp, NULL); 613 ether_ifattach(ifp, enaddr); 614 615 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), 616 RND_TYPE_NET, RND_FLAG_DEFAULT); 617 618 evcnt_attach_dynamic(&sc->sc_ev_intr, EVCNT_TYPE_INTR, 619 NULL, device_xname(sc->sc_dev), "interrupts"); 620 621 callout_init(&sc->sc_tick_ch, 0); 622 623 return; 624} 625 626int 627cas_detach(device_t self, int flags) 628{ 629 int i; 630 struct cas_softc *sc = device_private(self); 631 bus_space_tag_t t = sc->sc_memt; 632 bus_space_handle_t h = sc->sc_memh; 633 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 634 635 /* 636 * Free any resources we've allocated during the failed attach 637 * attempt. Do this in reverse order and fall through. 638 */ 639 switch (sc->sc_att_stage) { 640 case CAS_ATT_FINISHED: 641 bus_space_write_4(t, h, CAS_INTMASK, ~(uint32_t)0); 642 pmf_device_deregister(self); 643 cas_stop(&sc->sc_ethercom.ec_if, 1); 644 evcnt_detach(&sc->sc_ev_intr); 645 646 rnd_detach_source(&sc->rnd_source); 647 648 ether_ifdetach(ifp); 649 if_detach(ifp); 650 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 651 652 callout_destroy(&sc->sc_tick_ch); 653 654 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 655 656 /*FALLTHROUGH*/ 657 case CAS_ATT_MII: 658 case CAS_ATT_7: 659 case CAS_ATT_6: 660 for (i = 0; i < CAS_NTXDESC; i++) { 661 if (sc->sc_txd[i].sd_map != NULL) 662 bus_dmamap_destroy(sc->sc_dmatag, 663 sc->sc_txd[i].sd_map); 664 } 665 /*FALLTHROUGH*/ 666 case CAS_ATT_5: 667 for (i = 0; i < CAS_NRXDESC; i++) { 668 if (sc->sc_rxsoft[i].rxs_dmamap != NULL) 669 bus_dmamap_unload(sc->sc_dmatag, 670 sc->sc_rxsoft[i].rxs_dmamap); 671 if (sc->sc_rxsoft[i].rxs_dmamap != NULL) 672 bus_dmamap_destroy(sc->sc_dmatag, 673 sc->sc_rxsoft[i].rxs_dmamap); 674 if (sc->sc_rxsoft[i].rxs_kva != NULL) 675 bus_dmamem_unmap(sc->sc_dmatag, 676 sc->sc_rxsoft[i].rxs_kva, CAS_PAGE_SIZE); 677 /* XXX need to check that bus_dmamem_alloc suceeded 678 if (sc->sc_rxsoft[i].rxs_dmaseg != NULL) 679 */ 680 bus_dmamem_free(sc->sc_dmatag, 681 &(sc->sc_rxsoft[i].rxs_dmaseg), 1); 682 } 683 bus_dmamap_unload(sc->sc_dmatag, sc->sc_cddmamap); 684 /*FALLTHROUGH*/ 685 case CAS_ATT_4: 686 case CAS_ATT_3: 687 bus_dmamap_destroy(sc->sc_dmatag, sc->sc_cddmamap); 688 /*FALLTHROUGH*/ 689 case CAS_ATT_2: 690 bus_dmamem_unmap(sc->sc_dmatag, sc->sc_control_data, 691 sizeof(struct cas_control_data)); 692 /*FALLTHROUGH*/ 693 case CAS_ATT_1: 694 bus_dmamem_free(sc->sc_dmatag, &sc->sc_cdseg, sc->sc_cdnseg); 695 /*FALLTHROUGH*/ 696 case CAS_ATT_0: 697 sc->sc_att_stage = CAS_ATT_0; 698 /*FALLTHROUGH*/ 699 case CAS_ATT_BACKEND_2: 700 case CAS_ATT_BACKEND_1: 701 if (sc->sc_ih != NULL) { 702 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 703 sc->sc_ih = NULL; 704 } 705 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_size); 706 /*FALLTHROUGH*/ 707 case CAS_ATT_BACKEND_0: 708 break; 709 } 710 return 0; 711} 712 713static void 714cas_partial_detach(struct cas_softc *sc, enum cas_attach_stage stage) 715{ 716 cfattach_t ca = device_cfattach(sc->sc_dev); 717 718 sc->sc_att_stage = stage; 719 (*ca->ca_detach)(sc->sc_dev, 0); 720} 721 722void 723cas_tick(void *arg) 724{ 725 struct cas_softc *sc = arg; 726 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 727 bus_space_tag_t t = sc->sc_memt; 728 bus_space_handle_t mac = sc->sc_memh; 729 int s; 730 u_int32_t v; 731 732 /* unload collisions counters */ 733 v = bus_space_read_4(t, mac, CAS_MAC_EXCESS_COLL_CNT) + 734 bus_space_read_4(t, mac, CAS_MAC_LATE_COLL_CNT); 735 ifp->if_collisions += v + 736 bus_space_read_4(t, mac, CAS_MAC_NORM_COLL_CNT) + 737 bus_space_read_4(t, mac, CAS_MAC_FIRST_COLL_CNT); 738 ifp->if_oerrors += v; 739 740 /* read error counters */ 741 ifp->if_ierrors += 742 bus_space_read_4(t, mac, CAS_MAC_RX_LEN_ERR_CNT) + 743 bus_space_read_4(t, mac, CAS_MAC_RX_ALIGN_ERR) + 744 bus_space_read_4(t, mac, CAS_MAC_RX_CRC_ERR_CNT) + 745 bus_space_read_4(t, mac, CAS_MAC_RX_CODE_VIOL); 746 747 /* clear the hardware counters */ 748 bus_space_write_4(t, mac, CAS_MAC_NORM_COLL_CNT, 0); 749 bus_space_write_4(t, mac, CAS_MAC_FIRST_COLL_CNT, 0); 750 bus_space_write_4(t, mac, CAS_MAC_EXCESS_COLL_CNT, 0); 751 bus_space_write_4(t, mac, CAS_MAC_LATE_COLL_CNT, 0); 752 bus_space_write_4(t, mac, CAS_MAC_RX_LEN_ERR_CNT, 0); 753 bus_space_write_4(t, mac, CAS_MAC_RX_ALIGN_ERR, 0); 754 bus_space_write_4(t, mac, CAS_MAC_RX_CRC_ERR_CNT, 0); 755 bus_space_write_4(t, mac, CAS_MAC_RX_CODE_VIOL, 0); 756 757 s = splnet(); 758 mii_tick(&sc->sc_mii); 759 splx(s); 760 761 callout_reset(&sc->sc_tick_ch, hz, cas_tick, sc); 762} 763 764int 765cas_bitwait(struct cas_softc *sc, bus_space_handle_t h, int r, 766 u_int32_t clr, u_int32_t set) 767{ 768 int i; 769 u_int32_t reg; 770 771 for (i = TRIES; i--; DELAY(100)) { 772 reg = bus_space_read_4(sc->sc_memt, h, r); 773 if ((reg & clr) == 0 && (reg & set) == set) 774 return (1); 775 } 776 777 return (0); 778} 779 780void 781cas_reset(struct cas_softc *sc) 782{ 783 bus_space_tag_t t = sc->sc_memt; 784 bus_space_handle_t h = sc->sc_memh; 785 int s; 786 787 s = splnet(); 788 DPRINTF(sc, ("%s: cas_reset\n", device_xname(sc->sc_dev))); 789 cas_reset_rx(sc); 790 cas_reset_tx(sc); 791 792 /* Disable interrupts */ 793 bus_space_write_4(sc->sc_memt, sc->sc_memh, CAS_INTMASK, ~(uint32_t)0); 794 795 /* Do a full reset */ 796 bus_space_write_4(t, h, CAS_RESET, 797 CAS_RESET_RX | CAS_RESET_TX | CAS_RESET_BLOCK_PCS); 798 if (!cas_bitwait(sc, h, CAS_RESET, CAS_RESET_RX | CAS_RESET_TX, 0)) 799 aprint_error_dev(sc->sc_dev, "cannot reset device\n"); 800 splx(s); 801} 802 803 804/* 805 * cas_rxdrain: 806 * 807 * Drain the receive queue. 808 */ 809void 810cas_rxdrain(struct cas_softc *sc) 811{ 812 /* Nothing to do yet. */ 813} 814 815/* 816 * Reset the whole thing. 817 */ 818void 819cas_stop(struct ifnet *ifp, int disable) 820{ 821 struct cas_softc *sc = (struct cas_softc *)ifp->if_softc; 822 struct cas_sxd *sd; 823 u_int32_t i; 824 825 DPRINTF(sc, ("%s: cas_stop\n", device_xname(sc->sc_dev))); 826 827 callout_stop(&sc->sc_tick_ch); 828 829 /* 830 * Mark the interface down and cancel the watchdog timer. 831 */ 832 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 833 ifp->if_timer = 0; 834 835 mii_down(&sc->sc_mii); 836 837 cas_reset_rx(sc); 838 cas_reset_tx(sc); 839 840 /* 841 * Release any queued transmit buffers. 842 */ 843 for (i = 0; i < CAS_NTXDESC; i++) { 844 sd = &sc->sc_txd[i]; 845 if (sd->sd_mbuf != NULL) { 846 bus_dmamap_sync(sc->sc_dmatag, sd->sd_map, 0, 847 sd->sd_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 848 bus_dmamap_unload(sc->sc_dmatag, sd->sd_map); 849 m_freem(sd->sd_mbuf); 850 sd->sd_mbuf = NULL; 851 } 852 } 853 sc->sc_tx_cnt = sc->sc_tx_prod = sc->sc_tx_cons = 0; 854 855 if (disable) 856 cas_rxdrain(sc); 857} 858 859 860/* 861 * Reset the receiver 862 */ 863int 864cas_reset_rx(struct cas_softc *sc) 865{ 866 bus_space_tag_t t = sc->sc_memt; 867 bus_space_handle_t h = sc->sc_memh; 868 869 /* 870 * Resetting while DMA is in progress can cause a bus hang, so we 871 * disable DMA first. 872 */ 873 cas_disable_rx(sc); 874 bus_space_write_4(t, h, CAS_RX_CONFIG, 0); 875 /* Wait till it finishes */ 876 if (!cas_bitwait(sc, h, CAS_RX_CONFIG, 1, 0)) 877 aprint_error_dev(sc->sc_dev, "cannot disable rx dma\n"); 878 /* Wait 5ms extra. */ 879 delay(5000); 880 881 /* Finally, reset the ERX */ 882 bus_space_write_4(t, h, CAS_RESET, CAS_RESET_RX); 883 /* Wait till it finishes */ 884 if (!cas_bitwait(sc, h, CAS_RESET, CAS_RESET_RX, 0)) { 885 aprint_error_dev(sc->sc_dev, "cannot reset receiver\n"); 886 return (1); 887 } 888 return (0); 889} 890 891 892/* 893 * Reset the transmitter 894 */ 895int 896cas_reset_tx(struct cas_softc *sc) 897{ 898 bus_space_tag_t t = sc->sc_memt; 899 bus_space_handle_t h = sc->sc_memh; 900 901 /* 902 * Resetting while DMA is in progress can cause a bus hang, so we 903 * disable DMA first. 904 */ 905 cas_disable_tx(sc); 906 bus_space_write_4(t, h, CAS_TX_CONFIG, 0); 907 /* Wait till it finishes */ 908 if (!cas_bitwait(sc, h, CAS_TX_CONFIG, 1, 0)) 909 aprint_error_dev(sc->sc_dev, "cannot disable tx dma\n"); 910 /* Wait 5ms extra. */ 911 delay(5000); 912 913 /* Finally, reset the ETX */ 914 bus_space_write_4(t, h, CAS_RESET, CAS_RESET_TX); 915 /* Wait till it finishes */ 916 if (!cas_bitwait(sc, h, CAS_RESET, CAS_RESET_TX, 0)) { 917 aprint_error_dev(sc->sc_dev, "cannot reset transmitter\n"); 918 return (1); 919 } 920 return (0); 921} 922 923/* 924 * Disable receiver. 925 */ 926int 927cas_disable_rx(struct cas_softc *sc) 928{ 929 bus_space_tag_t t = sc->sc_memt; 930 bus_space_handle_t h = sc->sc_memh; 931 u_int32_t cfg; 932 933 /* Flip the enable bit */ 934 cfg = bus_space_read_4(t, h, CAS_MAC_RX_CONFIG); 935 cfg &= ~CAS_MAC_RX_ENABLE; 936 bus_space_write_4(t, h, CAS_MAC_RX_CONFIG, cfg); 937 938 /* Wait for it to finish */ 939 return (cas_bitwait(sc, h, CAS_MAC_RX_CONFIG, CAS_MAC_RX_ENABLE, 0)); 940} 941 942/* 943 * Disable transmitter. 944 */ 945int 946cas_disable_tx(struct cas_softc *sc) 947{ 948 bus_space_tag_t t = sc->sc_memt; 949 bus_space_handle_t h = sc->sc_memh; 950 u_int32_t cfg; 951 952 /* Flip the enable bit */ 953 cfg = bus_space_read_4(t, h, CAS_MAC_TX_CONFIG); 954 cfg &= ~CAS_MAC_TX_ENABLE; 955 bus_space_write_4(t, h, CAS_MAC_TX_CONFIG, cfg); 956 957 /* Wait for it to finish */ 958 return (cas_bitwait(sc, h, CAS_MAC_TX_CONFIG, CAS_MAC_TX_ENABLE, 0)); 959} 960 961/* 962 * Initialize interface. 963 */ 964int 965cas_meminit(struct cas_softc *sc) 966{ 967 int i; 968 969 /* 970 * Initialize the transmit descriptor ring. 971 */ 972 for (i = 0; i < CAS_NTXDESC; i++) { 973 sc->sc_txdescs[i].cd_flags = 0; 974 sc->sc_txdescs[i].cd_addr = 0; 975 } 976 CAS_CDTXSYNC(sc, 0, CAS_NTXDESC, 977 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 978 979 /* 980 * Initialize the receive descriptor and receive job 981 * descriptor rings. 982 */ 983 for (i = 0; i < CAS_NRXDESC; i++) 984 CAS_INIT_RXDESC(sc, i, i); 985 sc->sc_rxdptr = 0; 986 sc->sc_rxptr = 0; 987 988 /* 989 * Initialize the receive completion ring. 990 */ 991 for (i = 0; i < CAS_NRXCOMP; i++) { 992 sc->sc_rxcomps[i].cc_word[0] = 0; 993 sc->sc_rxcomps[i].cc_word[1] = 0; 994 sc->sc_rxcomps[i].cc_word[2] = 0; 995 sc->sc_rxcomps[i].cc_word[3] = CAS_DMA_WRITE(CAS_RC3_OWN); 996 CAS_CDRXCSYNC(sc, i, 997 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 998 } 999 1000 return (0); 1001} 1002 1003int 1004cas_ringsize(int sz) 1005{ 1006 switch (sz) { 1007 case 32: 1008 return CAS_RING_SZ_32; 1009 case 64: 1010 return CAS_RING_SZ_64; 1011 case 128: 1012 return CAS_RING_SZ_128; 1013 case 256: 1014 return CAS_RING_SZ_256; 1015 case 512: 1016 return CAS_RING_SZ_512; 1017 case 1024: 1018 return CAS_RING_SZ_1024; 1019 case 2048: 1020 return CAS_RING_SZ_2048; 1021 case 4096: 1022 return CAS_RING_SZ_4096; 1023 case 8192: 1024 return CAS_RING_SZ_8192; 1025 default: 1026 aprint_error("cas: invalid Receive Descriptor ring size %d\n", 1027 sz); 1028 return CAS_RING_SZ_32; 1029 } 1030} 1031 1032int 1033cas_cringsize(int sz) 1034{ 1035 int i; 1036 1037 for (i = 0; i < 9; i++) 1038 if (sz == (128 << i)) 1039 return i; 1040 1041 aprint_error("cas: invalid completion ring size %d\n", sz); 1042 return 128; 1043} 1044 1045/* 1046 * Initialization of interface; set up initialization block 1047 * and transmit/receive descriptor rings. 1048 */ 1049int 1050cas_init(struct ifnet *ifp) 1051{ 1052 struct cas_softc *sc = (struct cas_softc *)ifp->if_softc; 1053 bus_space_tag_t t = sc->sc_memt; 1054 bus_space_handle_t h = sc->sc_memh; 1055 int s; 1056 u_int max_frame_size; 1057 u_int32_t v; 1058 1059 s = splnet(); 1060 1061 DPRINTF(sc, ("%s: cas_init: calling stop\n", device_xname(sc->sc_dev))); 1062 /* 1063 * Initialization sequence. The numbered steps below correspond 1064 * to the sequence outlined in section 6.3.5.1 in the Ethernet 1065 * Channel Engine manual (part of the PCIO manual). 1066 * See also the STP2002-STQ document from Sun Microsystems. 1067 */ 1068 1069 /* step 1 & 2. Reset the Ethernet Channel */ 1070 cas_stop(ifp, 0); 1071 cas_reset(sc); 1072 DPRINTF(sc, ("%s: cas_init: restarting\n", device_xname(sc->sc_dev))); 1073 1074 /* Re-initialize the MIF */ 1075 cas_mifinit(sc); 1076 1077 /* step 3. Setup data structures in host memory */ 1078 cas_meminit(sc); 1079 1080 /* step 4. TX MAC registers & counters */ 1081 cas_init_regs(sc); 1082 max_frame_size = ETHER_MAX_LEN + ETHER_VLAN_ENCAP_LEN; 1083 v = (max_frame_size) | (0x2000 << 16) /* Burst size */; 1084 bus_space_write_4(t, h, CAS_MAC_MAC_MAX_FRAME, v); 1085 1086 /* step 5. RX MAC registers & counters */ 1087 cas_iff(sc); 1088 1089 /* step 6 & 7. Program Descriptor Ring Base Addresses */ 1090 KASSERT((CAS_CDTXADDR(sc, 0) & 0x1fff) == 0); 1091 bus_space_write_4(t, h, CAS_TX_RING_PTR_HI, 1092 (((uint64_t)CAS_CDTXADDR(sc,0)) >> 32)); 1093 bus_space_write_4(t, h, CAS_TX_RING_PTR_LO, CAS_CDTXADDR(sc, 0)); 1094 1095 KASSERT((CAS_CDRXADDR(sc, 0) & 0x1fff) == 0); 1096 bus_space_write_4(t, h, CAS_RX_DRING_PTR_HI, 1097 (((uint64_t)CAS_CDRXADDR(sc,0)) >> 32)); 1098 bus_space_write_4(t, h, CAS_RX_DRING_PTR_LO, CAS_CDRXADDR(sc, 0)); 1099 1100 KASSERT((CAS_CDRXCADDR(sc, 0) & 0x1fff) == 0); 1101 bus_space_write_4(t, h, CAS_RX_CRING_PTR_HI, 1102 (((uint64_t)CAS_CDRXCADDR(sc,0)) >> 32)); 1103 bus_space_write_4(t, h, CAS_RX_CRING_PTR_LO, CAS_CDRXCADDR(sc, 0)); 1104 1105 if (CAS_PLUS(sc)) { 1106 KASSERT((CAS_CDRXADDR2(sc, 0) & 0x1fff) == 0); 1107 bus_space_write_4(t, h, CAS_RX_DRING_PTR_HI2, 1108 (((uint64_t)CAS_CDRXADDR2(sc,0)) >> 32)); 1109 bus_space_write_4(t, h, CAS_RX_DRING_PTR_LO2, 1110 CAS_CDRXADDR2(sc, 0)); 1111 } 1112 1113 /* step 8. Global Configuration & Interrupt Mask */ 1114 cas_estintr(sc, CAS_INTR_REG); 1115 1116 /* step 9. ETX Configuration: use mostly default values */ 1117 1118 /* Enable DMA */ 1119 v = cas_ringsize(CAS_NTXDESC /*XXX*/) << 10; 1120 bus_space_write_4(t, h, CAS_TX_CONFIG, 1121 v|CAS_TX_CONFIG_TXDMA_EN|(1<<24)|(1<<29)); 1122 bus_space_write_4(t, h, CAS_TX_KICK, 0); 1123 1124 /* step 10. ERX Configuration */ 1125 1126 /* Encode Receive Descriptor ring size */ 1127 v = cas_ringsize(CAS_NRXDESC) << CAS_RX_CONFIG_RXDRNG_SZ_SHIFT; 1128 if (CAS_PLUS(sc)) 1129 v |= cas_ringsize(32) << CAS_RX_CONFIG_RXDRNG2_SZ_SHIFT; 1130 1131 /* Encode Receive Completion ring size */ 1132 v |= cas_cringsize(CAS_NRXCOMP) << CAS_RX_CONFIG_RXCRNG_SZ_SHIFT; 1133 1134 /* Enable DMA */ 1135 bus_space_write_4(t, h, CAS_RX_CONFIG, 1136 v|(2<<CAS_RX_CONFIG_FBOFF_SHFT)|CAS_RX_CONFIG_RXDMA_EN); 1137 1138 /* 1139 * The following value is for an OFF Threshold of about 3/4 full 1140 * and an ON Threshold of 1/4 full. 1141 */ 1142 bus_space_write_4(t, h, CAS_RX_PAUSE_THRESH, 1143 (3 * sc->sc_rxfifosize / 256) | 1144 ((sc->sc_rxfifosize / 256) << 12)); 1145 bus_space_write_4(t, h, CAS_RX_BLANKING, (6 << 12) | 6); 1146 1147 /* step 11. Configure Media */ 1148 mii_ifmedia_change(&sc->sc_mii); 1149 1150 /* step 12. RX_MAC Configuration Register */ 1151 v = bus_space_read_4(t, h, CAS_MAC_RX_CONFIG); 1152 v |= CAS_MAC_RX_ENABLE | CAS_MAC_RX_STRIP_CRC; 1153 bus_space_write_4(t, h, CAS_MAC_RX_CONFIG, v); 1154 1155 /* step 14. Issue Transmit Pending command */ 1156 1157 /* step 15. Give the receiver a swift kick */ 1158 bus_space_write_4(t, h, CAS_RX_KICK, CAS_NRXDESC-4); 1159 if (CAS_PLUS(sc)) 1160 bus_space_write_4(t, h, CAS_RX_KICK2, 4); 1161 1162 /* Start the one second timer. */ 1163 callout_reset(&sc->sc_tick_ch, hz, cas_tick, sc); 1164 1165 ifp->if_flags |= IFF_RUNNING; 1166 ifp->if_flags &= ~IFF_OACTIVE; 1167 ifp->if_timer = 0; 1168 splx(s); 1169 1170 return (0); 1171} 1172 1173void 1174cas_init_regs(struct cas_softc *sc) 1175{ 1176 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1177 bus_space_tag_t t = sc->sc_memt; 1178 bus_space_handle_t h = sc->sc_memh; 1179 const u_char *laddr = CLLADDR(ifp->if_sadl); 1180 u_int32_t v, r; 1181 1182 /* These regs are not cleared on reset */ 1183 sc->sc_inited = 0; 1184 if (!sc->sc_inited) { 1185 /* Load recommended values */ 1186 bus_space_write_4(t, h, CAS_MAC_IPG0, 0x00); 1187 bus_space_write_4(t, h, CAS_MAC_IPG1, 0x08); 1188 bus_space_write_4(t, h, CAS_MAC_IPG2, 0x04); 1189 1190 bus_space_write_4(t, h, CAS_MAC_MAC_MIN_FRAME, ETHER_MIN_LEN); 1191 /* Max frame and max burst size */ 1192 v = ETHER_MAX_LEN | (0x2000 << 16) /* Burst size */; 1193 bus_space_write_4(t, h, CAS_MAC_MAC_MAX_FRAME, v); 1194 1195 bus_space_write_4(t, h, CAS_MAC_PREAMBLE_LEN, 0x07); 1196 bus_space_write_4(t, h, CAS_MAC_JAM_SIZE, 0x04); 1197 bus_space_write_4(t, h, CAS_MAC_ATTEMPT_LIMIT, 0x10); 1198 bus_space_write_4(t, h, CAS_MAC_CONTROL_TYPE, 0x8088); 1199 bus_space_write_4(t, h, CAS_MAC_RANDOM_SEED, 1200 ((laddr[5]<<8)|laddr[4])&0x3ff); 1201 1202 /* Secondary MAC addresses set to 0:0:0:0:0:0 */ 1203 for (r = CAS_MAC_ADDR3; r < CAS_MAC_ADDR42; r += 4) 1204 bus_space_write_4(t, h, r, 0); 1205 1206 /* MAC control addr set to 0:1:c2:0:1:80 */ 1207 bus_space_write_4(t, h, CAS_MAC_ADDR42, 0x0001); 1208 bus_space_write_4(t, h, CAS_MAC_ADDR43, 0xc200); 1209 bus_space_write_4(t, h, CAS_MAC_ADDR44, 0x0180); 1210 1211 /* MAC filter addr set to 0:0:0:0:0:0 */ 1212 bus_space_write_4(t, h, CAS_MAC_ADDR_FILTER0, 0); 1213 bus_space_write_4(t, h, CAS_MAC_ADDR_FILTER1, 0); 1214 bus_space_write_4(t, h, CAS_MAC_ADDR_FILTER2, 0); 1215 1216 bus_space_write_4(t, h, CAS_MAC_ADR_FLT_MASK1_2, 0); 1217 bus_space_write_4(t, h, CAS_MAC_ADR_FLT_MASK0, 0); 1218 1219 /* Hash table initialized to 0 */ 1220 for (r = CAS_MAC_HASH0; r <= CAS_MAC_HASH15; r += 4) 1221 bus_space_write_4(t, h, r, 0); 1222 1223 sc->sc_inited = 1; 1224 } 1225 1226 /* Counters need to be zeroed */ 1227 bus_space_write_4(t, h, CAS_MAC_NORM_COLL_CNT, 0); 1228 bus_space_write_4(t, h, CAS_MAC_FIRST_COLL_CNT, 0); 1229 bus_space_write_4(t, h, CAS_MAC_EXCESS_COLL_CNT, 0); 1230 bus_space_write_4(t, h, CAS_MAC_LATE_COLL_CNT, 0); 1231 bus_space_write_4(t, h, CAS_MAC_DEFER_TMR_CNT, 0); 1232 bus_space_write_4(t, h, CAS_MAC_PEAK_ATTEMPTS, 0); 1233 bus_space_write_4(t, h, CAS_MAC_RX_FRAME_COUNT, 0); 1234 bus_space_write_4(t, h, CAS_MAC_RX_LEN_ERR_CNT, 0); 1235 bus_space_write_4(t, h, CAS_MAC_RX_ALIGN_ERR, 0); 1236 bus_space_write_4(t, h, CAS_MAC_RX_CRC_ERR_CNT, 0); 1237 bus_space_write_4(t, h, CAS_MAC_RX_CODE_VIOL, 0); 1238 1239 /* Un-pause stuff */ 1240 bus_space_write_4(t, h, CAS_MAC_SEND_PAUSE_CMD, 0); 1241 1242 /* 1243 * Set the station address. 1244 */ 1245 bus_space_write_4(t, h, CAS_MAC_ADDR0, (laddr[4]<<8) | laddr[5]); 1246 bus_space_write_4(t, h, CAS_MAC_ADDR1, (laddr[2]<<8) | laddr[3]); 1247 bus_space_write_4(t, h, CAS_MAC_ADDR2, (laddr[0]<<8) | laddr[1]); 1248} 1249 1250/* 1251 * Receive interrupt. 1252 */ 1253int 1254cas_rint(struct cas_softc *sc) 1255{ 1256 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1257 bus_space_tag_t t = sc->sc_memt; 1258 bus_space_handle_t h = sc->sc_memh; 1259 struct cas_rxsoft *rxs; 1260 struct mbuf *m; 1261 u_int64_t word[4]; 1262 int len, off, idx; 1263 int i, skip; 1264 void *cp; 1265 1266 for (i = sc->sc_rxptr;; i = CAS_NEXTRX(i + skip)) { 1267 CAS_CDRXCSYNC(sc, i, 1268 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1269 1270 word[0] = CAS_DMA_READ(sc->sc_rxcomps[i].cc_word[0]); 1271 word[1] = CAS_DMA_READ(sc->sc_rxcomps[i].cc_word[1]); 1272 word[2] = CAS_DMA_READ(sc->sc_rxcomps[i].cc_word[2]); 1273 word[3] = CAS_DMA_READ(sc->sc_rxcomps[i].cc_word[3]); 1274 1275 /* Stop if the hardware still owns the descriptor. */ 1276 if ((word[0] & CAS_RC0_TYPE) == 0 || word[3] & CAS_RC3_OWN) 1277 break; 1278 1279 len = CAS_RC1_HDR_LEN(word[1]); 1280 if (len > 0) { 1281 off = CAS_RC1_HDR_OFF(word[1]); 1282 idx = CAS_RC1_HDR_IDX(word[1]); 1283 rxs = &sc->sc_rxsoft[idx]; 1284 1285 DPRINTF(sc, ("hdr at idx %d, off %d, len %d\n", 1286 idx, off, len)); 1287 1288 bus_dmamap_sync(sc->sc_dmatag, rxs->rxs_dmamap, 0, 1289 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1290 1291 cp = rxs->rxs_kva + off * 256 + ETHER_ALIGN; 1292 m = m_devget(cp, len, 0, ifp); 1293 1294 if (word[0] & CAS_RC0_RELEASE_HDR) 1295 cas_add_rxbuf(sc, idx); 1296 1297 if (m != NULL) { 1298 1299 /* 1300 * Pass this up to any BPF listeners, but only 1301 * pass it up the stack if its for us. 1302 */ 1303 m->m_pkthdr.csum_flags = 0; 1304 if_percpuq_enqueue(ifp->if_percpuq, m); 1305 } else 1306 ifp->if_ierrors++; 1307 } 1308 1309 len = CAS_RC0_DATA_LEN(word[0]); 1310 if (len > 0) { 1311 off = CAS_RC0_DATA_OFF(word[0]); 1312 idx = CAS_RC0_DATA_IDX(word[0]); 1313 rxs = &sc->sc_rxsoft[idx]; 1314 1315 DPRINTF(sc, ("data at idx %d, off %d, len %d\n", 1316 idx, off, len)); 1317 1318 bus_dmamap_sync(sc->sc_dmatag, rxs->rxs_dmamap, 0, 1319 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1320 1321 /* XXX We should not be copying the packet here. */ 1322 cp = rxs->rxs_kva + off + ETHER_ALIGN; 1323 m = m_devget(cp, len, 0, ifp); 1324 1325 if (word[0] & CAS_RC0_RELEASE_DATA) 1326 cas_add_rxbuf(sc, idx); 1327 1328 if (m != NULL) { 1329 /* 1330 * Pass this up to any BPF listeners, but only 1331 * pass it up the stack if its for us. 1332 */ 1333 m->m_pkthdr.csum_flags = 0; 1334 if_percpuq_enqueue(ifp->if_percpuq, m); 1335 } else 1336 ifp->if_ierrors++; 1337 } 1338 1339 if (word[0] & CAS_RC0_SPLIT) 1340 aprint_error_dev(sc->sc_dev, "split packet\n"); 1341 1342 skip = CAS_RC0_SKIP(word[0]); 1343 } 1344 1345 while (sc->sc_rxptr != i) { 1346 sc->sc_rxcomps[sc->sc_rxptr].cc_word[0] = 0; 1347 sc->sc_rxcomps[sc->sc_rxptr].cc_word[1] = 0; 1348 sc->sc_rxcomps[sc->sc_rxptr].cc_word[2] = 0; 1349 sc->sc_rxcomps[sc->sc_rxptr].cc_word[3] = 1350 CAS_DMA_WRITE(CAS_RC3_OWN); 1351 CAS_CDRXCSYNC(sc, sc->sc_rxptr, 1352 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1353 1354 sc->sc_rxptr = CAS_NEXTRX(sc->sc_rxptr); 1355 } 1356 1357 bus_space_write_4(t, h, CAS_RX_COMP_TAIL, sc->sc_rxptr); 1358 1359 DPRINTF(sc, ("cas_rint: done sc->rxptr %d, complete %d\n", 1360 sc->sc_rxptr, bus_space_read_4(t, h, CAS_RX_COMPLETION))); 1361 1362 return (1); 1363} 1364 1365/* 1366 * cas_add_rxbuf: 1367 * 1368 * Add a receive buffer to the indicated descriptor. 1369 */ 1370int 1371cas_add_rxbuf(struct cas_softc *sc, int idx) 1372{ 1373 bus_space_tag_t t = sc->sc_memt; 1374 bus_space_handle_t h = sc->sc_memh; 1375 1376 CAS_INIT_RXDESC(sc, sc->sc_rxdptr, idx); 1377 1378 if ((sc->sc_rxdptr % 4) == 0) 1379 bus_space_write_4(t, h, CAS_RX_KICK, sc->sc_rxdptr); 1380 1381 if (++sc->sc_rxdptr == CAS_NRXDESC) 1382 sc->sc_rxdptr = 0; 1383 1384 return (0); 1385} 1386 1387int 1388cas_eint(struct cas_softc *sc, u_int status) 1389{ 1390 char bits[128]; 1391 if ((status & CAS_INTR_MIF) != 0) { 1392 DPRINTF(sc, ("%s: link status changed\n", 1393 device_xname(sc->sc_dev))); 1394 return (1); 1395 } 1396 1397 snprintb(bits, sizeof(bits), CAS_INTR_BITS, status); 1398 printf("%s: status=%s\n", device_xname(sc->sc_dev), bits); 1399 return (1); 1400} 1401 1402int 1403cas_pint(struct cas_softc *sc) 1404{ 1405 bus_space_tag_t t = sc->sc_memt; 1406 bus_space_handle_t seb = sc->sc_memh; 1407 u_int32_t status; 1408 1409 status = bus_space_read_4(t, seb, CAS_MII_INTERRUP_STATUS); 1410 status |= bus_space_read_4(t, seb, CAS_MII_INTERRUP_STATUS); 1411#ifdef CAS_DEBUG 1412 if (status) 1413 printf("%s: link status changed\n", device_xname(sc->sc_dev)); 1414#endif 1415 return (1); 1416} 1417 1418int 1419cas_intr(void *v) 1420{ 1421 struct cas_softc *sc = (struct cas_softc *)v; 1422 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1423 bus_space_tag_t t = sc->sc_memt; 1424 bus_space_handle_t seb = sc->sc_memh; 1425 u_int32_t status; 1426 int r = 0; 1427#ifdef CAS_DEBUG 1428 char bits[128]; 1429#endif 1430 1431 sc->sc_ev_intr.ev_count++; 1432 1433 status = bus_space_read_4(t, seb, CAS_STATUS); 1434#ifdef CAS_DEBUG 1435 snprintb(bits, sizeof(bits), CAS_INTR_BITS, status); 1436#endif 1437 DPRINTF(sc, ("%s: cas_intr: cplt %x status %s\n", 1438 device_xname(sc->sc_dev), (status>>19), bits)); 1439 1440 if ((status & CAS_INTR_PCS) != 0) 1441 r |= cas_pint(sc); 1442 1443 if ((status & (CAS_INTR_TX_TAG_ERR | CAS_INTR_RX_TAG_ERR | 1444 CAS_INTR_RX_COMP_FULL | CAS_INTR_BERR)) != 0) 1445 r |= cas_eint(sc, status); 1446 1447 if ((status & (CAS_INTR_TX_EMPTY | CAS_INTR_TX_INTME)) != 0) 1448 r |= cas_tint(sc, status); 1449 1450 if ((status & (CAS_INTR_RX_DONE | CAS_INTR_RX_NOBUF)) != 0) 1451 r |= cas_rint(sc); 1452 1453 /* We should eventually do more than just print out error stats. */ 1454 if (status & CAS_INTR_TX_MAC) { 1455 int txstat = bus_space_read_4(t, seb, CAS_MAC_TX_STATUS); 1456#ifdef CAS_DEBUG 1457 if (txstat & ~CAS_MAC_TX_XMIT_DONE) 1458 printf("%s: MAC tx fault, status %x\n", 1459 device_xname(sc->sc_dev), txstat); 1460#endif 1461 if (txstat & (CAS_MAC_TX_UNDERRUN | CAS_MAC_TX_PKT_TOO_LONG)) 1462 cas_init(ifp); 1463 } 1464 if (status & CAS_INTR_RX_MAC) { 1465 int rxstat = bus_space_read_4(t, seb, CAS_MAC_RX_STATUS); 1466#ifdef CAS_DEBUG 1467 if (rxstat & ~CAS_MAC_RX_DONE) 1468 printf("%s: MAC rx fault, status %x\n", 1469 device_xname(sc->sc_dev), rxstat); 1470#endif 1471 /* 1472 * On some chip revisions CAS_MAC_RX_OVERFLOW happen often 1473 * due to a silicon bug so handle them silently. 1474 */ 1475 if (rxstat & CAS_MAC_RX_OVERFLOW) { 1476 ifp->if_ierrors++; 1477 cas_init(ifp); 1478 } 1479#ifdef CAS_DEBUG 1480 else if (rxstat & ~(CAS_MAC_RX_DONE | CAS_MAC_RX_FRAME_CNT)) 1481 printf("%s: MAC rx fault, status %x\n", 1482 device_xname(sc->sc_dev), rxstat); 1483#endif 1484 } 1485 rnd_add_uint32(&sc->rnd_source, status); 1486 return (r); 1487} 1488 1489 1490void 1491cas_watchdog(struct ifnet *ifp) 1492{ 1493 struct cas_softc *sc = ifp->if_softc; 1494 1495 DPRINTF(sc, ("cas_watchdog: CAS_RX_CONFIG %x CAS_MAC_RX_STATUS %x " 1496 "CAS_MAC_RX_CONFIG %x\n", 1497 bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_RX_CONFIG), 1498 bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_MAC_RX_STATUS), 1499 bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_MAC_RX_CONFIG))); 1500 1501 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); 1502 ++ifp->if_oerrors; 1503 1504 /* Try to get more packets going. */ 1505 cas_init(ifp); 1506} 1507 1508/* 1509 * Initialize the MII Management Interface 1510 */ 1511void 1512cas_mifinit(struct cas_softc *sc) 1513{ 1514 bus_space_tag_t t = sc->sc_memt; 1515 bus_space_handle_t mif = sc->sc_memh; 1516 1517 /* Configure the MIF in frame mode */ 1518 sc->sc_mif_config = bus_space_read_4(t, mif, CAS_MIF_CONFIG); 1519 sc->sc_mif_config &= ~CAS_MIF_CONFIG_BB_ENA; 1520 bus_space_write_4(t, mif, CAS_MIF_CONFIG, sc->sc_mif_config); 1521} 1522 1523/* 1524 * MII interface 1525 * 1526 * The Cassini MII interface supports at least three different operating modes: 1527 * 1528 * Bitbang mode is implemented using data, clock and output enable registers. 1529 * 1530 * Frame mode is implemented by loading a complete frame into the frame 1531 * register and polling the valid bit for completion. 1532 * 1533 * Polling mode uses the frame register but completion is indicated by 1534 * an interrupt. 1535 * 1536 */ 1537int 1538cas_mii_readreg(device_t self, int phy, int reg, uint16_t *val) 1539{ 1540 struct cas_softc *sc = device_private(self); 1541 bus_space_tag_t t = sc->sc_memt; 1542 bus_space_handle_t mif = sc->sc_memh; 1543 int n; 1544 u_int32_t v; 1545 1546#ifdef CAS_DEBUG 1547 if (sc->sc_debug) 1548 printf("cas_mii_readreg: phy %d reg %d\n", phy, reg); 1549#endif 1550 1551 /* Construct the frame command */ 1552 v = (reg << CAS_MIF_REG_SHIFT) | (phy << CAS_MIF_PHY_SHIFT) | 1553 CAS_MIF_FRAME_READ; 1554 1555 bus_space_write_4(t, mif, CAS_MIF_FRAME, v); 1556 for (n = 0; n < 100; n++) { 1557 DELAY(1); 1558 v = bus_space_read_4(t, mif, CAS_MIF_FRAME); 1559 if (v & CAS_MIF_FRAME_TA0) { 1560 *val = v & CAS_MIF_FRAME_DATA; 1561 return 0; 1562 } 1563 } 1564 1565 printf("%s: mii_read timeout\n", device_xname(sc->sc_dev)); 1566 return ETIMEDOUT; 1567} 1568 1569int 1570cas_mii_writereg(device_t self, int phy, int reg, uint16_t val) 1571{ 1572 struct cas_softc *sc = device_private(self); 1573 bus_space_tag_t t = sc->sc_memt; 1574 bus_space_handle_t mif = sc->sc_memh; 1575 int n; 1576 u_int32_t v; 1577 1578#ifdef CAS_DEBUG 1579 if (sc->sc_debug) 1580 printf("cas_mii_writereg: phy %d reg %d val %x\n", 1581 phy, reg, val); 1582#endif 1583 1584 /* Construct the frame command */ 1585 v = CAS_MIF_FRAME_WRITE | 1586 (phy << CAS_MIF_PHY_SHIFT) | 1587 (reg << CAS_MIF_REG_SHIFT) | 1588 (val & CAS_MIF_FRAME_DATA); 1589 1590 bus_space_write_4(t, mif, CAS_MIF_FRAME, v); 1591 for (n = 0; n < 100; n++) { 1592 DELAY(1); 1593 v = bus_space_read_4(t, mif, CAS_MIF_FRAME); 1594 if (v & CAS_MIF_FRAME_TA0) 1595 return 0; 1596 } 1597 1598 printf("%s: mii_write timeout\n", device_xname(sc->sc_dev)); 1599 return ETIMEDOUT; 1600} 1601 1602void 1603cas_mii_statchg(struct ifnet *ifp) 1604{ 1605 struct cas_softc *sc = ifp->if_softc; 1606#ifdef CAS_DEBUG 1607 int instance = IFM_INST(sc->sc_media.ifm_cur->ifm_media); 1608#endif 1609 bus_space_tag_t t = sc->sc_memt; 1610 bus_space_handle_t mac = sc->sc_memh; 1611 u_int32_t v; 1612 1613#ifdef CAS_DEBUG 1614 if (sc->sc_debug) 1615 printf("cas_mii_statchg: status change: phy = %d\n", 1616 sc->sc_phys[instance]); 1617#endif 1618 1619 /* Set tx full duplex options */ 1620 bus_space_write_4(t, mac, CAS_MAC_TX_CONFIG, 0); 1621 delay(10000); /* reg must be cleared and delay before changing. */ 1622 v = CAS_MAC_TX_ENA_IPG0|CAS_MAC_TX_NGU|CAS_MAC_TX_NGU_LIMIT| 1623 CAS_MAC_TX_ENABLE; 1624 if ((IFM_OPTIONS(sc->sc_mii.mii_media_active) & IFM_FDX) != 0) { 1625 v |= CAS_MAC_TX_IGN_CARRIER|CAS_MAC_TX_IGN_COLLIS; 1626 } 1627 bus_space_write_4(t, mac, CAS_MAC_TX_CONFIG, v); 1628 1629 /* XIF Configuration */ 1630 v = CAS_MAC_XIF_TX_MII_ENA; 1631 v |= CAS_MAC_XIF_LINK_LED; 1632 1633 /* MII needs echo disable if half duplex. */ 1634 if ((IFM_OPTIONS(sc->sc_mii.mii_media_active) & IFM_FDX) != 0) 1635 /* turn on full duplex LED */ 1636 v |= CAS_MAC_XIF_FDPLX_LED; 1637 else 1638 /* half duplex -- disable echo */ 1639 v |= CAS_MAC_XIF_ECHO_DISABL; 1640 1641 switch (IFM_SUBTYPE(sc->sc_mii.mii_media_active)) { 1642 case IFM_1000_T: /* Gigabit using GMII interface */ 1643 case IFM_1000_SX: 1644 v |= CAS_MAC_XIF_GMII_MODE; 1645 break; 1646 default: 1647 v &= ~CAS_MAC_XIF_GMII_MODE; 1648 } 1649 bus_space_write_4(t, mac, CAS_MAC_XIF_CONFIG, v); 1650} 1651 1652int 1653cas_pcs_readreg(device_t self, int phy, int reg, uint16_t *val) 1654{ 1655 struct cas_softc *sc = device_private(self); 1656 bus_space_tag_t t = sc->sc_memt; 1657 bus_space_handle_t pcs = sc->sc_memh; 1658 1659#ifdef CAS_DEBUG 1660 if (sc->sc_debug) 1661 printf("cas_pcs_readreg: phy %d reg %d\n", phy, reg); 1662#endif 1663 1664 if (phy != CAS_PHYAD_EXTERNAL) 1665 return -1; 1666 1667 switch (reg) { 1668 case MII_BMCR: 1669 reg = CAS_MII_CONTROL; 1670 break; 1671 case MII_BMSR: 1672 reg = CAS_MII_STATUS; 1673 break; 1674 case MII_ANAR: 1675 reg = CAS_MII_ANAR; 1676 break; 1677 case MII_ANLPAR: 1678 reg = CAS_MII_ANLPAR; 1679 break; 1680 case MII_EXTSR: 1681 *val = EXTSR_1000XFDX | EXTSR_1000XHDX; 1682 return 0; 1683 default: 1684 return (0); 1685 } 1686 1687 *val = bus_space_read_4(t, pcs, reg) & 0xffff; 1688 return 0; 1689} 1690 1691int 1692cas_pcs_writereg(device_t self, int phy, int reg, uint16_t 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 -1; 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 0; 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 return 0; 1739} 1740 1741int 1742cas_mediachange(struct ifnet *ifp) 1743{ 1744 struct cas_softc *sc = ifp->if_softc; 1745 struct mii_data *mii = &sc->sc_mii; 1746 1747 if (mii->mii_instance) { 1748 struct mii_softc *miisc; 1749 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 1750 mii_phy_reset(miisc); 1751 } 1752 1753 return (mii_mediachg(&sc->sc_mii)); 1754} 1755 1756void 1757cas_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 1758{ 1759 struct cas_softc *sc = ifp->if_softc; 1760 1761 mii_pollstat(&sc->sc_mii); 1762 ifmr->ifm_active = sc->sc_mii.mii_media_active; 1763 ifmr->ifm_status = sc->sc_mii.mii_media_status; 1764} 1765 1766/* 1767 * Process an ioctl request. 1768 */ 1769int 1770cas_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1771{ 1772 struct cas_softc *sc = ifp->if_softc; 1773 int s, error = 0; 1774 1775 s = splnet(); 1776 1777 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1778 error = 0; 1779 if (cmd != SIOCADDMULTI && cmd != SIOCDELMULTI) 1780 ; 1781 else if (ifp->if_flags & IFF_RUNNING) { 1782 /* 1783 * Multicast list has changed; set the hardware filter 1784 * accordingly. 1785 */ 1786 cas_iff(sc); 1787 } 1788 } 1789 1790 splx(s); 1791 return (error); 1792} 1793 1794static bool 1795cas_suspend(device_t self, const pmf_qual_t *qual) 1796{ 1797 struct cas_softc *sc = device_private(self); 1798 bus_space_tag_t t = sc->sc_memt; 1799 bus_space_handle_t h = sc->sc_memh; 1800 1801 bus_space_write_4(t, h, CAS_INTMASK, ~(uint32_t)0); 1802 if (sc->sc_ih != NULL) { 1803 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 1804 sc->sc_ih = NULL; 1805 } 1806 1807 return true; 1808} 1809 1810static bool 1811cas_resume(device_t self, const pmf_qual_t *qual) 1812{ 1813 struct cas_softc *sc = device_private(self); 1814 1815 return cas_estintr(sc, CAS_INTR_PCI | CAS_INTR_REG); 1816} 1817 1818static bool 1819cas_estintr(struct cas_softc *sc, int what) 1820{ 1821 bus_space_tag_t t = sc->sc_memt; 1822 bus_space_handle_t h = sc->sc_memh; 1823 const char *intrstr = NULL; 1824 char intrbuf[PCI_INTRSTR_LEN]; 1825 1826 /* PCI interrupts */ 1827 if (what & CAS_INTR_PCI) { 1828 intrstr = pci_intr_string(sc->sc_pc, sc->sc_handle, intrbuf, sizeof(intrbuf)); 1829 sc->sc_ih = pci_intr_establish_xname(sc->sc_pc, sc->sc_handle, 1830 IPL_NET, cas_intr, sc, device_xname(sc->sc_dev)); 1831 if (sc->sc_ih == NULL) { 1832 aprint_error_dev(sc->sc_dev, 1833 "unable to establish interrupt"); 1834 if (intrstr != NULL) 1835 aprint_error(" at %s", intrstr); 1836 aprint_error("\n"); 1837 return false; 1838 } 1839 1840 aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr); 1841 } 1842 1843 /* Interrupt register */ 1844 if (what & CAS_INTR_REG) { 1845 bus_space_write_4(t, h, CAS_INTMASK, 1846 ~(CAS_INTR_TX_INTME|CAS_INTR_TX_EMPTY| 1847 CAS_INTR_TX_TAG_ERR| 1848 CAS_INTR_RX_DONE|CAS_INTR_RX_NOBUF| 1849 CAS_INTR_RX_TAG_ERR| 1850 CAS_INTR_RX_COMP_FULL|CAS_INTR_PCS| 1851 CAS_INTR_MAC_CONTROL|CAS_INTR_MIF| 1852 CAS_INTR_BERR)); 1853 bus_space_write_4(t, h, CAS_MAC_RX_MASK, 1854 CAS_MAC_RX_DONE|CAS_MAC_RX_FRAME_CNT); 1855 bus_space_write_4(t, h, CAS_MAC_TX_MASK, CAS_MAC_TX_XMIT_DONE); 1856 bus_space_write_4(t, h, CAS_MAC_CONTROL_MASK, 0); /* XXXX */ 1857 } 1858 return true; 1859} 1860 1861bool 1862cas_shutdown(device_t self, int howto) 1863{ 1864 struct cas_softc *sc = device_private(self); 1865 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1866 1867 cas_stop(ifp, 1); 1868 1869 return true; 1870} 1871 1872void 1873cas_iff(struct cas_softc *sc) 1874{ 1875 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1876 struct ethercom *ec = &sc->sc_ethercom; 1877 struct ether_multi *enm; 1878 struct ether_multistep step; 1879 bus_space_tag_t t = sc->sc_memt; 1880 bus_space_handle_t h = sc->sc_memh; 1881 u_int32_t crc, hash[16], rxcfg; 1882 int i; 1883 1884 rxcfg = bus_space_read_4(t, h, CAS_MAC_RX_CONFIG); 1885 rxcfg &= ~(CAS_MAC_RX_HASH_FILTER | CAS_MAC_RX_PROMISCUOUS | 1886 CAS_MAC_RX_PROMISC_GRP); 1887 ifp->if_flags &= ~IFF_ALLMULTI; 1888 1889 if (ifp->if_flags & IFF_PROMISC || ec->ec_multicnt > 0) { 1890 ifp->if_flags |= IFF_ALLMULTI; 1891 if (ifp->if_flags & IFF_PROMISC) 1892 rxcfg |= CAS_MAC_RX_PROMISCUOUS; 1893 else 1894 rxcfg |= CAS_MAC_RX_PROMISC_GRP; 1895 } else { 1896 /* 1897 * Set up multicast address filter by passing all multicast 1898 * addresses through a crc generator, and then using the 1899 * high order 8 bits as an index into the 256 bit logical 1900 * address filter. The high order 4 bits selects the word, 1901 * while the other 4 bits select the bit within the word 1902 * (where bit 0 is the MSB). 1903 */ 1904 1905 rxcfg |= CAS_MAC_RX_HASH_FILTER; 1906 1907 /* Clear hash table */ 1908 for (i = 0; i < 16; i++) 1909 hash[i] = 0; 1910 1911 ETHER_FIRST_MULTI(step, ec, enm); 1912 while (enm != NULL) { 1913 crc = ether_crc32_le(enm->enm_addrlo, 1914 ETHER_ADDR_LEN); 1915 1916 /* Just want the 8 most significant bits. */ 1917 crc >>= 24; 1918 1919 /* Set the corresponding bit in the filter. */ 1920 hash[crc >> 4] |= 1 << (15 - (crc & 15)); 1921 1922 ETHER_NEXT_MULTI(step, enm); 1923 } 1924 1925 /* Now load the hash table into the chip (if we are using it) */ 1926 for (i = 0; i < 16; i++) { 1927 bus_space_write_4(t, h, 1928 CAS_MAC_HASH0 + i * (CAS_MAC_HASH1 - CAS_MAC_HASH0), 1929 hash[i]); 1930 } 1931 } 1932 1933 bus_space_write_4(t, h, CAS_MAC_RX_CONFIG, rxcfg); 1934} 1935 1936int 1937cas_encap(struct cas_softc *sc, struct mbuf *mhead, u_int32_t *bixp) 1938{ 1939 u_int64_t flags; 1940 u_int32_t cur, frag, i; 1941 bus_dmamap_t map; 1942 1943 cur = frag = *bixp; 1944 map = sc->sc_txd[cur].sd_map; 1945 1946 if (bus_dmamap_load_mbuf(sc->sc_dmatag, map, mhead, 1947 BUS_DMA_NOWAIT) != 0) { 1948 return (ENOBUFS); 1949 } 1950 1951 if ((sc->sc_tx_cnt + map->dm_nsegs) > (CAS_NTXDESC - 2)) { 1952 bus_dmamap_unload(sc->sc_dmatag, map); 1953 return (ENOBUFS); 1954 } 1955 1956 bus_dmamap_sync(sc->sc_dmatag, map, 0, map->dm_mapsize, 1957 BUS_DMASYNC_PREWRITE); 1958 1959 for (i = 0; i < map->dm_nsegs; i++) { 1960 sc->sc_txdescs[frag].cd_addr = 1961 CAS_DMA_WRITE(map->dm_segs[i].ds_addr); 1962 flags = (map->dm_segs[i].ds_len & CAS_TD_BUFSIZE) | 1963 (i == 0 ? CAS_TD_START_OF_PACKET : 0) | 1964 ((i == (map->dm_nsegs - 1)) ? CAS_TD_END_OF_PACKET : 0); 1965 sc->sc_txdescs[frag].cd_flags = CAS_DMA_WRITE(flags); 1966 bus_dmamap_sync(sc->sc_dmatag, sc->sc_cddmamap, 1967 CAS_CDTXOFF(frag), sizeof(struct cas_desc), 1968 BUS_DMASYNC_PREWRITE); 1969 cur = frag; 1970 if (++frag == CAS_NTXDESC) 1971 frag = 0; 1972 } 1973 1974 sc->sc_tx_cnt += map->dm_nsegs; 1975 sc->sc_txd[*bixp].sd_map = sc->sc_txd[cur].sd_map; 1976 sc->sc_txd[cur].sd_map = map; 1977 sc->sc_txd[cur].sd_mbuf = mhead; 1978 1979 bus_space_write_4(sc->sc_memt, sc->sc_memh, CAS_TX_KICK, frag); 1980 1981 *bixp = frag; 1982 1983 /* sync descriptors */ 1984 1985 return (0); 1986} 1987 1988/* 1989 * Transmit interrupt. 1990 */ 1991int 1992cas_tint(struct cas_softc *sc, u_int32_t status) 1993{ 1994 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 1995 struct cas_sxd *sd; 1996 u_int32_t cons, comp; 1997 1998 comp = bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_TX_COMPLETION); 1999 cons = sc->sc_tx_cons; 2000 while (cons != comp) { 2001 sd = &sc->sc_txd[cons]; 2002 if (sd->sd_mbuf != NULL) { 2003 bus_dmamap_sync(sc->sc_dmatag, sd->sd_map, 0, 2004 sd->sd_map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 2005 bus_dmamap_unload(sc->sc_dmatag, sd->sd_map); 2006 m_freem(sd->sd_mbuf); 2007 sd->sd_mbuf = NULL; 2008 ifp->if_opackets++; 2009 } 2010 sc->sc_tx_cnt--; 2011 if (++cons == CAS_NTXDESC) 2012 cons = 0; 2013 } 2014 sc->sc_tx_cons = cons; 2015 2016 if (sc->sc_tx_cnt < CAS_NTXDESC - 2) 2017 ifp->if_flags &= ~IFF_OACTIVE; 2018 if (sc->sc_tx_cnt == 0) 2019 ifp->if_timer = 0; 2020 2021 if_schedule_deferred_start(ifp); 2022 2023 return (1); 2024} 2025 2026void 2027cas_start(struct ifnet *ifp) 2028{ 2029 struct cas_softc *sc = ifp->if_softc; 2030 struct mbuf *m; 2031 u_int32_t bix; 2032 2033 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 2034 return; 2035 2036 bix = sc->sc_tx_prod; 2037 while (sc->sc_txd[bix].sd_mbuf == NULL) { 2038 IFQ_POLL(&ifp->if_snd, m); 2039 if (m == NULL) 2040 break; 2041 2042 /* 2043 * If BPF is listening on this interface, let it see the 2044 * packet before we commit it to the wire. 2045 */ 2046 bpf_mtap(ifp, m, BPF_D_OUT); 2047 2048 /* 2049 * Encapsulate this packet and start it going... 2050 * or fail... 2051 */ 2052 if (cas_encap(sc, m, &bix)) { 2053 ifp->if_flags |= IFF_OACTIVE; 2054 break; 2055 } 2056 2057 IFQ_DEQUEUE(&ifp->if_snd, m); 2058 ifp->if_timer = 5; 2059 } 2060 2061 sc->sc_tx_prod = bix; 2062} 2063 2064MODULE(MODULE_CLASS_DRIVER, if_cas, "pci"); 2065 2066#ifdef _MODULE 2067#include "ioconf.c" 2068#endif 2069 2070static int 2071if_cas_modcmd(modcmd_t cmd, void *opaque) 2072{ 2073 int error = 0; 2074 2075 switch (cmd) { 2076 case MODULE_CMD_INIT: 2077#ifdef _MODULE 2078 error = config_init_component(cfdriver_ioconf_cas, 2079 cfattach_ioconf_cas, cfdata_ioconf_cas); 2080#endif 2081 return error; 2082 case MODULE_CMD_FINI: 2083#ifdef _MODULE 2084 error = config_fini_component(cfdriver_ioconf_cas, 2085 cfattach_ioconf_cas, cfdata_ioconf_cas); 2086#endif 2087 return error; 2088 default: 2089 return ENOTTY; 2090 } 2091} 2092