1 /* $NetBSD: if_bm.c,v 1.34 2007/10/17 19:55:18 garbled Exp $ */ 2 3 /*- 4 * Copyright (C) 1998, 1999, 2000 Tsubai Masanari. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: if_bm.c,v 1.34 2007/10/17 19:55:18 garbled Exp $"); 31 32 #include "opt_inet.h" 33 #include "bpfilter.h" 34 35 #include <sys/param.h> 36 #include <sys/device.h> 37 #include <sys/ioctl.h> 38 #include <sys/kernel.h> 39 #include <sys/mbuf.h> 40 #include <sys/socket.h> 41 #include <sys/systm.h> 42 #include <sys/callout.h> 43 44 #include <uvm/uvm_extern.h> 45 46 #include <net/if.h> 47 #include <net/if_dl.h> 48 #include <net/if_ether.h> 49 #include <net/if_media.h> 50 51 #if NBPFILTER > 0 52 #include <net/bpf.h> 53 #endif 54 55 #ifdef INET 56 #include <netinet/in.h> 57 #include <netinet/if_inarp.h> 58 #endif 59 60 61 #include <dev/ofw/openfirm.h> 62 63 #include <dev/mii/mii.h> 64 #include <dev/mii/miivar.h> 65 #include <dev/mii/mii_bitbang.h> 66 67 #include <powerpc/spr.h> 68 69 #include <machine/autoconf.h> 70 #include <machine/pio.h> 71 72 #include <macppc/dev/dbdma.h> 73 #include <macppc/dev/if_bmreg.h> 74 75 #define BMAC_TXBUFS 2 76 #define BMAC_RXBUFS 16 77 #define BMAC_BUFLEN 2048 78 79 struct bmac_softc { 80 struct device sc_dev; 81 struct ethercom sc_ethercom; 82 #define sc_if sc_ethercom.ec_if 83 struct callout sc_tick_ch; 84 bus_space_tag_t sc_iot; 85 bus_space_handle_t sc_ioh; 86 dbdma_regmap_t *sc_txdma; 87 dbdma_regmap_t *sc_rxdma; 88 dbdma_command_t *sc_txcmd; 89 dbdma_command_t *sc_rxcmd; 90 void *sc_txbuf; 91 void *sc_rxbuf; 92 int sc_rxlast; 93 int sc_flags; 94 struct mii_data sc_mii; 95 u_char sc_enaddr[6]; 96 }; 97 98 #define BMAC_BMACPLUS 0x01 99 #define BMAC_DEBUGFLAG 0x02 100 101 extern volatile uint32_t *heathrow_FCR; 102 103 int bmac_match __P((struct device *, struct cfdata *, void *)); 104 void bmac_attach __P((struct device *, struct device *, void *)); 105 void bmac_reset_chip __P((struct bmac_softc *)); 106 void bmac_init __P((struct bmac_softc *)); 107 void bmac_init_dma __P((struct bmac_softc *)); 108 int bmac_intr __P((void *)); 109 int bmac_rint __P((void *)); 110 void bmac_reset __P((struct bmac_softc *)); 111 void bmac_stop __P((struct bmac_softc *)); 112 void bmac_start __P((struct ifnet *)); 113 void bmac_transmit_packet __P((struct bmac_softc *, void *, int)); 114 int bmac_put __P((struct bmac_softc *, void *, struct mbuf *)); 115 struct mbuf *bmac_get __P((struct bmac_softc *, void *, int)); 116 void bmac_watchdog __P((struct ifnet *)); 117 int bmac_ioctl __P((struct ifnet *, u_long, void *)); 118 int bmac_mediachange __P((struct ifnet *)); 119 void bmac_mediastatus __P((struct ifnet *, struct ifmediareq *)); 120 void bmac_setladrf __P((struct bmac_softc *)); 121 122 int bmac_mii_readreg __P((struct device *, int, int)); 123 void bmac_mii_writereg __P((struct device *, int, int, int)); 124 void bmac_mii_statchg __P((struct device *)); 125 void bmac_mii_tick __P((void *)); 126 u_int32_t bmac_mbo_read __P((struct device *)); 127 void bmac_mbo_write __P((struct device *, u_int32_t)); 128 129 CFATTACH_DECL(bm, sizeof(struct bmac_softc), 130 bmac_match, bmac_attach, NULL, NULL); 131 132 const struct mii_bitbang_ops bmac_mbo = { 133 bmac_mbo_read, bmac_mbo_write, 134 { MIFDO, MIFDI, MIFDC, MIFDIR, 0 } 135 }; 136 137 static inline uint16_t 138 bmac_read_reg(struct bmac_softc *sc, bus_size_t off) 139 { 140 return bus_space_read_2(sc->sc_iot, sc->sc_ioh, off); 141 } 142 143 static inline void 144 bmac_write_reg(struct bmac_softc *sc, bus_size_t off, uint16_t val) 145 { 146 bus_space_write_2(sc->sc_iot, sc->sc_ioh, off, val); 147 } 148 149 static inline void 150 bmac_set_bits(struct bmac_softc *sc, bus_size_t off, uint16_t val) 151 { 152 val |= bmac_read_reg(sc, off); 153 bmac_write_reg(sc, off, val); 154 } 155 156 static inline void 157 bmac_reset_bits(struct bmac_softc *sc, bus_size_t off, uint16_t val) 158 { 159 bmac_write_reg(sc, off, bmac_read_reg(sc, off) & ~val); 160 } 161 162 int 163 bmac_match(struct device *parent, struct cfdata *cf, void *aux) 164 { 165 struct confargs *ca = aux; 166 167 if (ca->ca_nreg < 24 || ca->ca_nintr < 12) 168 return 0; 169 170 if (strcmp(ca->ca_name, "bmac") == 0) /* bmac */ 171 return 1; 172 if (strcmp(ca->ca_name, "ethernet") == 0) /* bmac+ */ 173 return 1; 174 175 return 0; 176 } 177 178 void 179 bmac_attach(struct device *parent, struct device *self, void *aux) 180 { 181 struct confargs *ca = aux; 182 struct bmac_softc *sc = (void *)self; 183 struct ifnet *ifp = &sc->sc_if; 184 struct mii_data *mii = &sc->sc_mii; 185 u_char laddr[6]; 186 187 callout_init(&sc->sc_tick_ch, 0); 188 189 sc->sc_flags =0; 190 if (strcmp(ca->ca_name, "ethernet") == 0) { 191 char name[64]; 192 193 memset(name, 0, 64); 194 OF_package_to_path(ca->ca_node, name, sizeof(name)); 195 OF_open(name); 196 sc->sc_flags |= BMAC_BMACPLUS; 197 } 198 199 ca->ca_reg[0] += ca->ca_baseaddr; 200 ca->ca_reg[2] += ca->ca_baseaddr; 201 ca->ca_reg[4] += ca->ca_baseaddr; 202 203 sc->sc_iot = ca->ca_tag; 204 if (bus_space_map(sc->sc_iot, ca->ca_reg[0], ca->ca_reg[1], 0, 205 &sc->sc_ioh) != 0) { 206 aprint_error(": couldn't map %#x", ca->ca_reg[0]); 207 return; 208 } 209 210 bmac_write_reg(sc, INTDISABLE, NoEventsMask); 211 212 if (OF_getprop(ca->ca_node, "local-mac-address", laddr, 6) == -1 && 213 OF_getprop(ca->ca_node, "mac-address", laddr, 6) == -1) { 214 printf(": cannot get mac-address\n"); 215 return; 216 } 217 memcpy(sc->sc_enaddr, laddr, 6); 218 219 sc->sc_txdma = mapiodev(ca->ca_reg[2], PAGE_SIZE); 220 sc->sc_rxdma = mapiodev(ca->ca_reg[4], PAGE_SIZE); 221 sc->sc_txcmd = dbdma_alloc(BMAC_TXBUFS * sizeof(dbdma_command_t)); 222 sc->sc_rxcmd = dbdma_alloc((BMAC_RXBUFS + 1) * sizeof(dbdma_command_t)); 223 sc->sc_txbuf = malloc(BMAC_BUFLEN * BMAC_TXBUFS, M_DEVBUF, M_NOWAIT); 224 sc->sc_rxbuf = malloc(BMAC_BUFLEN * BMAC_RXBUFS, M_DEVBUF, M_NOWAIT); 225 if (sc->sc_txbuf == NULL || sc->sc_rxbuf == NULL || 226 sc->sc_txcmd == NULL || sc->sc_rxcmd == NULL) { 227 printf("cannot allocate memory\n"); 228 return; 229 } 230 231 printf(" irq %d,%d: address %s\n", ca->ca_intr[0], ca->ca_intr[2], 232 ether_sprintf(laddr)); 233 234 intr_establish(ca->ca_intr[0], IST_EDGE, IPL_NET, bmac_intr, sc); 235 intr_establish(ca->ca_intr[2], IST_EDGE, IPL_NET, bmac_rint, sc); 236 237 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 238 ifp->if_softc = sc; 239 ifp->if_ioctl = bmac_ioctl; 240 ifp->if_start = bmac_start; 241 ifp->if_flags = 242 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 243 ifp->if_watchdog = bmac_watchdog; 244 IFQ_SET_READY(&ifp->if_snd); 245 246 mii->mii_ifp = ifp; 247 mii->mii_readreg = bmac_mii_readreg; 248 mii->mii_writereg = bmac_mii_writereg; 249 mii->mii_statchg = bmac_mii_statchg; 250 251 ifmedia_init(&mii->mii_media, 0, bmac_mediachange, bmac_mediastatus); 252 mii_attach(&sc->sc_dev, mii, 0xffffffff, MII_PHY_ANY, 253 MII_OFFSET_ANY, 0); 254 255 /* Choose a default media. */ 256 if (LIST_FIRST(&mii->mii_phys) == NULL) { 257 ifmedia_add(&mii->mii_media, IFM_ETHER|IFM_10_T, 0, NULL); 258 ifmedia_set(&mii->mii_media, IFM_ETHER|IFM_10_T); 259 } else 260 ifmedia_set(&mii->mii_media, IFM_ETHER|IFM_AUTO); 261 262 bmac_reset_chip(sc); 263 264 if_attach(ifp); 265 ether_ifattach(ifp, sc->sc_enaddr); 266 } 267 268 /* 269 * Reset and enable bmac by heathrow FCR. 270 */ 271 void 272 bmac_reset_chip(sc) 273 struct bmac_softc *sc; 274 { 275 u_int v; 276 277 dbdma_reset(sc->sc_txdma); 278 dbdma_reset(sc->sc_rxdma); 279 280 v = in32rb(heathrow_FCR); 281 282 v |= EnetEnable; 283 out32rb(heathrow_FCR, v); 284 delay(50000); 285 286 v |= ResetEnetCell; 287 out32rb(heathrow_FCR, v); 288 delay(50000); 289 290 v &= ~ResetEnetCell; 291 out32rb(heathrow_FCR, v); 292 delay(50000); 293 294 out32rb(heathrow_FCR, v); 295 } 296 297 void 298 bmac_init(sc) 299 struct bmac_softc *sc; 300 { 301 struct ifnet *ifp = &sc->sc_if; 302 struct ether_header *eh; 303 void *data; 304 int i, tb, bmcr; 305 u_short *p; 306 307 bmac_reset_chip(sc); 308 309 /* XXX */ 310 bmcr = bmac_mii_readreg((struct device *)sc, 0, MII_BMCR); 311 bmcr &= ~BMCR_ISO; 312 bmac_mii_writereg((struct device *)sc, 0, MII_BMCR, bmcr); 313 314 bmac_write_reg(sc, RXRST, RxResetValue); 315 bmac_write_reg(sc, TXRST, TxResetBit); 316 317 /* Wait for reset completion. */ 318 for (i = 1000; i > 0; i -= 10) { 319 if ((bmac_read_reg(sc, TXRST) & TxResetBit) == 0) 320 break; 321 delay(10); 322 } 323 if (i <= 0) 324 printf("%s: reset timeout\n", ifp->if_xname); 325 326 if (! (sc->sc_flags & BMAC_BMACPLUS)) 327 bmac_set_bits(sc, XCVRIF, ClkBit|SerialMode|COLActiveLow); 328 329 if ((mfpvr() >> 16) == MPC601) 330 tb = mfrtcl(); 331 else 332 tb = mftbl(); 333 bmac_write_reg(sc, RSEED, tb); 334 bmac_set_bits(sc, XIFC, TxOutputEnable); 335 bmac_read_reg(sc, PAREG); 336 337 /* Reset various counters. */ 338 bmac_write_reg(sc, NCCNT, 0); 339 bmac_write_reg(sc, NTCNT, 0); 340 bmac_write_reg(sc, EXCNT, 0); 341 bmac_write_reg(sc, LTCNT, 0); 342 bmac_write_reg(sc, FRCNT, 0); 343 bmac_write_reg(sc, LECNT, 0); 344 bmac_write_reg(sc, AECNT, 0); 345 bmac_write_reg(sc, FECNT, 0); 346 bmac_write_reg(sc, RXCV, 0); 347 348 /* Set tx fifo information. */ 349 bmac_write_reg(sc, TXTH, 4); /* 4 octets before tx starts */ 350 351 bmac_write_reg(sc, TXFIFOCSR, 0); 352 bmac_write_reg(sc, TXFIFOCSR, TxFIFOEnable); 353 354 /* Set rx fifo information. */ 355 bmac_write_reg(sc, RXFIFOCSR, 0); 356 bmac_write_reg(sc, RXFIFOCSR, RxFIFOEnable); 357 358 /* Clear status register. */ 359 bmac_read_reg(sc, STATUS); 360 361 bmac_write_reg(sc, HASH3, 0); 362 bmac_write_reg(sc, HASH2, 0); 363 bmac_write_reg(sc, HASH1, 0); 364 bmac_write_reg(sc, HASH0, 0); 365 366 /* Set MAC address. */ 367 p = (u_short *)sc->sc_enaddr; 368 bmac_write_reg(sc, MADD0, *p++); 369 bmac_write_reg(sc, MADD1, *p++); 370 bmac_write_reg(sc, MADD2, *p); 371 372 bmac_write_reg(sc, RXCFG, 373 RxCRCEnable | RxHashFilterEnable | RxRejectOwnPackets); 374 375 if (ifp->if_flags & IFF_PROMISC) 376 bmac_set_bits(sc, RXCFG, RxPromiscEnable); 377 378 bmac_init_dma(sc); 379 380 /* Enable TX/RX */ 381 bmac_set_bits(sc, RXCFG, RxMACEnable); 382 bmac_set_bits(sc, TXCFG, TxMACEnable); 383 384 bmac_write_reg(sc, INTDISABLE, NormalIntEvents); 385 386 ifp->if_flags |= IFF_RUNNING; 387 ifp->if_flags &= ~IFF_OACTIVE; 388 ifp->if_timer = 0; 389 390 data = sc->sc_txbuf; 391 eh = (struct ether_header *)data; 392 393 memset(data, 0, sizeof(eh) + ETHERMIN); 394 memcpy(eh->ether_dhost, sc->sc_enaddr, ETHER_ADDR_LEN); 395 memcpy(eh->ether_shost, sc->sc_enaddr, ETHER_ADDR_LEN); 396 bmac_transmit_packet(sc, data, sizeof(eh) + ETHERMIN); 397 398 bmac_start(ifp); 399 400 callout_reset(&sc->sc_tick_ch, hz, bmac_mii_tick, sc); 401 } 402 403 void 404 bmac_init_dma(sc) 405 struct bmac_softc *sc; 406 { 407 dbdma_command_t *cmd = sc->sc_rxcmd; 408 int i; 409 410 dbdma_reset(sc->sc_txdma); 411 dbdma_reset(sc->sc_rxdma); 412 413 memset(sc->sc_txcmd, 0, BMAC_TXBUFS * sizeof(dbdma_command_t)); 414 memset(sc->sc_rxcmd, 0, (BMAC_RXBUFS + 1) * sizeof(dbdma_command_t)); 415 416 for (i = 0; i < BMAC_RXBUFS; i++) { 417 DBDMA_BUILD(cmd, DBDMA_CMD_IN_LAST, 0, BMAC_BUFLEN, 418 vtophys((vaddr_t)sc->sc_rxbuf + BMAC_BUFLEN * i), 419 DBDMA_INT_ALWAYS, DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER); 420 cmd++; 421 } 422 DBDMA_BUILD(cmd, DBDMA_CMD_NOP, 0, 0, 0, 423 DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, DBDMA_BRANCH_ALWAYS); 424 out32rb(&cmd->d_cmddep, vtophys((vaddr_t)sc->sc_rxcmd)); 425 426 sc->sc_rxlast = 0; 427 428 dbdma_start(sc->sc_rxdma, sc->sc_rxcmd); 429 } 430 431 int 432 bmac_intr(v) 433 void *v; 434 { 435 struct bmac_softc *sc = v; 436 int stat; 437 438 stat = bmac_read_reg(sc, STATUS); 439 if (stat == 0) 440 return 0; 441 442 #ifdef BMAC_DEBUG 443 printf("bmac_intr status = 0x%x\n", stat); 444 #endif 445 446 if (stat & IntFrameSent) { 447 sc->sc_if.if_flags &= ~IFF_OACTIVE; 448 sc->sc_if.if_timer = 0; 449 sc->sc_if.if_opackets++; 450 bmac_start(&sc->sc_if); 451 } 452 453 /* XXX should do more! */ 454 455 return 1; 456 } 457 458 int 459 bmac_rint(v) 460 void *v; 461 { 462 struct bmac_softc *sc = v; 463 struct ifnet *ifp = &sc->sc_if; 464 struct mbuf *m; 465 dbdma_command_t *cmd; 466 int status, resid, count, datalen; 467 int i, n; 468 void *data; 469 470 i = sc->sc_rxlast; 471 for (n = 0; n < BMAC_RXBUFS; n++, i++) { 472 if (i == BMAC_RXBUFS) 473 i = 0; 474 cmd = &sc->sc_rxcmd[i]; 475 status = in16rb(&cmd->d_status); 476 resid = in16rb(&cmd->d_resid); 477 478 #ifdef BMAC_DEBUG 479 if (status != 0 && status != 0x8440 && status != 0x9440) 480 printf("bmac_rint status = 0x%x\n", status); 481 #endif 482 483 if ((status & DBDMA_CNTRL_ACTIVE) == 0) /* 0x9440 | 0x8440 */ 484 continue; 485 count = in16rb(&cmd->d_count); 486 datalen = count - resid - 2; /* 2 == framelen */ 487 if (datalen < sizeof(struct ether_header)) { 488 printf("%s: short packet len = %d\n", 489 ifp->if_xname, datalen); 490 goto next; 491 } 492 DBDMA_BUILD_CMD(cmd, DBDMA_CMD_STOP, 0, 0, 0, 0); 493 data = (char *)sc->sc_rxbuf + BMAC_BUFLEN * i; 494 495 /* XXX Sometimes bmac reads one extra byte. */ 496 if (datalen == ETHER_MAX_LEN + 1) 497 datalen--; 498 499 /* Trim the CRC. */ 500 datalen -= ETHER_CRC_LEN; 501 502 m = bmac_get(sc, data, datalen); 503 if (m == NULL) { 504 ifp->if_ierrors++; 505 goto next; 506 } 507 508 #if NBPFILTER > 0 509 /* 510 * Check if there's a BPF listener on this interface. 511 * If so, hand off the raw packet to BPF. 512 */ 513 if (ifp->if_bpf) 514 bpf_mtap(ifp->if_bpf, m); 515 #endif 516 (*ifp->if_input)(ifp, m); 517 ifp->if_ipackets++; 518 519 next: 520 DBDMA_BUILD_CMD(cmd, DBDMA_CMD_IN_LAST, 0, DBDMA_INT_ALWAYS, 521 DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER); 522 523 cmd->d_status = 0; 524 cmd->d_resid = 0; 525 sc->sc_rxlast = i + 1; 526 } 527 bmac_mediachange(ifp); 528 529 dbdma_continue(sc->sc_rxdma); 530 531 return 1; 532 } 533 534 void 535 bmac_reset(sc) 536 struct bmac_softc *sc; 537 { 538 int s; 539 540 s = splnet(); 541 bmac_init(sc); 542 splx(s); 543 } 544 545 void 546 bmac_stop(sc) 547 struct bmac_softc *sc; 548 { 549 struct ifnet *ifp = &sc->sc_if; 550 int s; 551 552 s = splnet(); 553 554 callout_stop(&sc->sc_tick_ch); 555 mii_down(&sc->sc_mii); 556 557 /* Disable TX/RX. */ 558 bmac_reset_bits(sc, TXCFG, TxMACEnable); 559 bmac_reset_bits(sc, RXCFG, RxMACEnable); 560 561 /* Disable all interrupts. */ 562 bmac_write_reg(sc, INTDISABLE, NoEventsMask); 563 564 dbdma_stop(sc->sc_txdma); 565 dbdma_stop(sc->sc_rxdma); 566 567 ifp->if_flags &= ~(IFF_UP | IFF_RUNNING); 568 ifp->if_timer = 0; 569 570 splx(s); 571 } 572 573 void 574 bmac_start(ifp) 575 struct ifnet *ifp; 576 { 577 struct bmac_softc *sc = ifp->if_softc; 578 struct mbuf *m; 579 int tlen; 580 581 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 582 return; 583 584 while (1) { 585 if (ifp->if_flags & IFF_OACTIVE) 586 return; 587 588 IFQ_DEQUEUE(&ifp->if_snd, m); 589 if (m == 0) 590 break; 591 #if NBPFILTER > 0 592 /* 593 * If BPF is listening on this interface, let it see the 594 * packet before we commit it to the wire. 595 */ 596 if (ifp->if_bpf) 597 bpf_mtap(ifp->if_bpf, m); 598 #endif 599 600 ifp->if_flags |= IFF_OACTIVE; 601 tlen = bmac_put(sc, sc->sc_txbuf, m); 602 603 /* 5 seconds to watch for failing to transmit */ 604 ifp->if_timer = 5; 605 ifp->if_opackets++; /* # of pkts */ 606 607 bmac_transmit_packet(sc, sc->sc_txbuf, tlen); 608 } 609 } 610 611 void 612 bmac_transmit_packet(sc, buff, len) 613 struct bmac_softc *sc; 614 void *buff; 615 int len; 616 { 617 dbdma_command_t *cmd = sc->sc_txcmd; 618 vaddr_t va = (vaddr_t)buff; 619 620 #ifdef BMAC_DEBUG 621 if (vtophys(va) + len - 1 != vtophys(va + len - 1)) 622 panic("bmac_transmit_packet"); 623 #endif 624 625 DBDMA_BUILD(cmd, DBDMA_CMD_OUT_LAST, 0, len, vtophys(va), 626 DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER); 627 cmd++; 628 DBDMA_BUILD(cmd, DBDMA_CMD_STOP, 0, 0, 0, 629 DBDMA_INT_ALWAYS, DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER); 630 631 dbdma_start(sc->sc_txdma, sc->sc_txcmd); 632 } 633 634 int 635 bmac_put(sc, buff, m) 636 struct bmac_softc *sc; 637 void *buff; 638 struct mbuf *m; 639 { 640 struct mbuf *n; 641 int len, tlen = 0; 642 643 for (; m; m = n) { 644 len = m->m_len; 645 if (len == 0) { 646 MFREE(m, n); 647 continue; 648 } 649 memcpy(buff, mtod(m, void *), len); 650 buff = (char *)buff + len; 651 tlen += len; 652 MFREE(m, n); 653 } 654 if (tlen > PAGE_SIZE) 655 panic("%s: putpacket packet overflow", sc->sc_dev.dv_xname); 656 657 return tlen; 658 } 659 660 struct mbuf * 661 bmac_get(sc, pkt, totlen) 662 struct bmac_softc *sc; 663 void *pkt; 664 int totlen; 665 { 666 struct mbuf *m; 667 struct mbuf *top, **mp; 668 int len; 669 670 MGETHDR(m, M_DONTWAIT, MT_DATA); 671 if (m == 0) 672 return 0; 673 m->m_pkthdr.rcvif = &sc->sc_if; 674 m->m_pkthdr.len = totlen; 675 len = MHLEN; 676 top = 0; 677 mp = ⊤ 678 679 while (totlen > 0) { 680 if (top) { 681 MGET(m, M_DONTWAIT, MT_DATA); 682 if (m == 0) { 683 m_freem(top); 684 return 0; 685 } 686 len = MLEN; 687 } 688 if (totlen >= MINCLSIZE) { 689 MCLGET(m, M_DONTWAIT); 690 if ((m->m_flags & M_EXT) == 0) { 691 m_free(m); 692 m_freem(top); 693 return 0; 694 } 695 len = MCLBYTES; 696 } 697 m->m_len = len = min(totlen, len); 698 memcpy(mtod(m, void *), pkt, len); 699 pkt = (char *)pkt + len; 700 totlen -= len; 701 *mp = m; 702 mp = &m->m_next; 703 } 704 705 return top; 706 } 707 708 void 709 bmac_watchdog(ifp) 710 struct ifnet *ifp; 711 { 712 struct bmac_softc *sc = ifp->if_softc; 713 714 bmac_reset_bits(sc, RXCFG, RxMACEnable); 715 bmac_reset_bits(sc, TXCFG, TxMACEnable); 716 717 printf("%s: device timeout\n", ifp->if_xname); 718 ifp->if_oerrors++; 719 720 bmac_reset(sc); 721 } 722 723 int 724 bmac_ioctl(ifp, cmd, data) 725 struct ifnet *ifp; 726 u_long cmd; 727 void *data; 728 { 729 struct bmac_softc *sc = ifp->if_softc; 730 struct ifaddr *ifa = (struct ifaddr *)data; 731 struct ifreq *ifr = (struct ifreq *)data; 732 int s, error = 0; 733 734 s = splnet(); 735 736 switch (cmd) { 737 738 case SIOCSIFADDR: 739 ifp->if_flags |= IFF_UP; 740 741 switch (ifa->ifa_addr->sa_family) { 742 #ifdef INET 743 case AF_INET: 744 bmac_init(sc); 745 arp_ifinit(ifp, ifa); 746 break; 747 #endif 748 default: 749 bmac_init(sc); 750 break; 751 } 752 break; 753 754 case SIOCSIFFLAGS: 755 if ((ifp->if_flags & IFF_UP) == 0 && 756 (ifp->if_flags & IFF_RUNNING) != 0) { 757 /* 758 * If interface is marked down and it is running, then 759 * stop it. 760 */ 761 bmac_stop(sc); 762 ifp->if_flags &= ~IFF_RUNNING; 763 } else if ((ifp->if_flags & IFF_UP) != 0 && 764 (ifp->if_flags & IFF_RUNNING) == 0) { 765 /* 766 * If interface is marked up and it is stopped, then 767 * start it. 768 */ 769 bmac_init(sc); 770 } else { 771 /* 772 * Reset the interface to pick up changes in any other 773 * flags that affect hardware registers. 774 */ 775 /*bmac_stop(sc);*/ 776 bmac_init(sc); 777 } 778 #ifdef BMAC_DEBUG 779 if (ifp->if_flags & IFF_DEBUG) 780 sc->sc_flags |= BMAC_DEBUGFLAG; 781 #endif 782 break; 783 784 case SIOCADDMULTI: 785 case SIOCDELMULTI: 786 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 787 /* 788 * Multicast list has changed; set the hardware filter 789 * accordingly. 790 */ 791 if (ifp->if_flags & IFF_RUNNING) { 792 bmac_init(sc); 793 bmac_setladrf(sc); 794 } 795 error = 0; 796 } 797 break; 798 799 case SIOCGIFMEDIA: 800 case SIOCSIFMEDIA: 801 error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd); 802 break; 803 804 default: 805 error = EINVAL; 806 } 807 808 splx(s); 809 return error; 810 } 811 812 int 813 bmac_mediachange(ifp) 814 struct ifnet *ifp; 815 { 816 struct bmac_softc *sc = ifp->if_softc; 817 818 return mii_mediachg(&sc->sc_mii); 819 } 820 821 void 822 bmac_mediastatus(ifp, ifmr) 823 struct ifnet *ifp; 824 struct ifmediareq *ifmr; 825 { 826 struct bmac_softc *sc = ifp->if_softc; 827 828 mii_pollstat(&sc->sc_mii); 829 830 ifmr->ifm_status = sc->sc_mii.mii_media_status; 831 ifmr->ifm_active = sc->sc_mii.mii_media_active; 832 } 833 834 /* 835 * Set up the logical address filter. 836 */ 837 void 838 bmac_setladrf(sc) 839 struct bmac_softc *sc; 840 { 841 struct ifnet *ifp = &sc->sc_if; 842 struct ether_multi *enm; 843 struct ether_multistep step; 844 u_int32_t crc; 845 u_int16_t hash[4]; 846 int x; 847 848 /* 849 * Set up multicast address filter by passing all multicast addresses 850 * through a crc generator, and then using the high order 6 bits as an 851 * index into the 64 bit logical address filter. The high order bit 852 * selects the word, while the rest of the bits select the bit within 853 * the word. 854 */ 855 856 if (ifp->if_flags & IFF_PROMISC) { 857 bmac_set_bits(sc, RXCFG, RxPromiscEnable); 858 return; 859 } 860 861 if (ifp->if_flags & IFF_ALLMULTI) { 862 hash[3] = hash[2] = hash[1] = hash[0] = 0xffff; 863 goto chipit; 864 } 865 866 hash[3] = hash[2] = hash[1] = hash[0] = 0; 867 868 ETHER_FIRST_MULTI(step, &sc->sc_ethercom, enm); 869 while (enm != NULL) { 870 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) { 871 /* 872 * We must listen to a range of multicast addresses. 873 * For now, just accept all multicasts, rather than 874 * trying to set only those filter bits needed to match 875 * the range. (At this time, the only use of address 876 * ranges is for IP multicast routing, for which the 877 * range is big enough to require all bits set.) 878 */ 879 hash[3] = hash[2] = hash[1] = hash[0] = 0xffff; 880 ifp->if_flags |= IFF_ALLMULTI; 881 goto chipit; 882 } 883 884 crc = ether_crc32_le(enm->enm_addrlo, ETHER_ADDR_LEN); 885 886 /* Just want the 6 most significant bits. */ 887 crc >>= 26; 888 889 /* Set the corresponding bit in the filter. */ 890 hash[crc >> 4] |= 1 << (crc & 0xf); 891 892 ETHER_NEXT_MULTI(step, enm); 893 } 894 895 ifp->if_flags &= ~IFF_ALLMULTI; 896 897 chipit: 898 bmac_write_reg(sc, HASH0, hash[0]); 899 bmac_write_reg(sc, HASH1, hash[1]); 900 bmac_write_reg(sc, HASH2, hash[2]); 901 bmac_write_reg(sc, HASH3, hash[3]); 902 x = bmac_read_reg(sc, RXCFG); 903 x &= ~RxPromiscEnable; 904 x |= RxHashFilterEnable; 905 bmac_write_reg(sc, RXCFG, x); 906 } 907 908 int 909 bmac_mii_readreg(dev, phy, reg) 910 struct device *dev; 911 int phy, reg; 912 { 913 return mii_bitbang_readreg(dev, &bmac_mbo, phy, reg); 914 } 915 916 void 917 bmac_mii_writereg(dev, phy, reg, val) 918 struct device *dev; 919 int phy, reg, val; 920 { 921 mii_bitbang_writereg(dev, &bmac_mbo, phy, reg, val); 922 } 923 924 u_int32_t 925 bmac_mbo_read(dev) 926 struct device *dev; 927 { 928 struct bmac_softc *sc = (void *)dev; 929 930 return bmac_read_reg(sc, MIFCSR); 931 } 932 933 void 934 bmac_mbo_write(dev, val) 935 struct device *dev; 936 u_int32_t val; 937 { 938 struct bmac_softc *sc = (void *)dev; 939 940 bmac_write_reg(sc, MIFCSR, val); 941 } 942 943 void 944 bmac_mii_statchg(dev) 945 struct device *dev; 946 { 947 struct bmac_softc *sc = (void *)dev; 948 int x; 949 950 /* Update duplex mode in TX configuration */ 951 x = bmac_read_reg(sc, TXCFG); 952 if ((IFM_OPTIONS(sc->sc_mii.mii_media_active) & IFM_FDX) != 0) 953 x |= TxFullDuplex; 954 else 955 x &= ~TxFullDuplex; 956 bmac_write_reg(sc, TXCFG, x); 957 958 #ifdef BMAC_DEBUG 959 printf("bmac_mii_statchg 0x%x\n", 960 IFM_OPTIONS(sc->sc_mii.mii_media_active)); 961 #endif 962 } 963 964 void 965 bmac_mii_tick(v) 966 void *v; 967 { 968 struct bmac_softc *sc = v; 969 int s; 970 971 s = splnet(); 972 mii_tick(&sc->sc_mii); 973 splx(s); 974 975 callout_reset(&sc->sc_tick_ch, hz, bmac_mii_tick, sc); 976 } 977