sys/dev/ic/am79900.c

   1 /*      $NetBSD: am79900.c,v 1.19 2008/04/04 12:25:07 tsutsui Exp $     */
   2
   3 /*-
   4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*-
  33  * Copyright (c) 1992, 1993
  34  *      The Regents of the University of California.  All rights reserved.
  35  *
  36  * This code is derived from software contributed to Berkeley by
  37  * Ralph Campbell and Rick Macklem.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  * 1. Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  * 2. Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in the
  46  *    documentation and/or other materials provided with the distribution.
  47  * 3. Neither the name of the University nor the names of its contributors
  48  *    may be used to endorse or promote products derived from this software
  49  *    without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  52  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  53  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  54  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  55  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  56  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  57  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  58  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  59  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  60  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  61  * SUCH DAMAGE.
  62  *
  63  *      @(#)if_le.c     8.2 (Berkeley) 11/16/93
  64  */
  65
  66 /*-
  67  * Copyright (c) 1998
  68  *      Matthias Drochner.  All rights reserved.
  69  * Copyright (c) 1995 Charles M. Hannum.  All rights reserved.
  70  *
  71  * This code is derived from software contributed to Berkeley by
  72  * Ralph Campbell and Rick Macklem.
  73  *
  74  * Redistribution and use in source and binary forms, with or without
  75  * modification, are permitted provided that the following conditions
  76  * are met:
  77  * 1. Redistributions of source code must retain the above copyright
  78  *    notice, this list of conditions and the following disclaimer.
  79  * 2. Redistributions in binary form must reproduce the above copyright
  80  *    notice, this list of conditions and the following disclaimer in the
  81  *    documentation and/or other materials provided with the distribution.
  82  * 3. All advertising materials mentioning features or use of this software
  83  *    must display the following acknowledgement:
  84  *      This product includes software developed by the University of
  85  *      California, Berkeley and its contributors.
  86  * 4. Neither the name of the University nor the names of its contributors
  87  *    may be used to endorse or promote products derived from this software
  88  *    without specific prior written permission.
  89  *
  90  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  91  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  92  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  93  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  94  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  95  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  96  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  97  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  98  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  99  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 100  * SUCH DAMAGE.
 101  *
 102  *      @(#)if_le.c     8.2 (Berkeley) 11/16/93
 103  */
 104
 105 #include <sys/cdefs.h>
 106 __KERNEL_RCSID(0, "$NetBSD: am79900.c,v 1.19 2008/04/04 12:25:07 tsutsui Exp $");
 107
 108 #include "bpfilter.h"
 109 #include "rnd.h"
 110
 111 #include <sys/param.h>
 112 #include <sys/systm.h>
 113 #include <sys/mbuf.h>
 114 #include <sys/syslog.h>
 115 #include <sys/socket.h>
 116 #include <sys/device.h>
 117 #include <sys/malloc.h>
 118 #include <sys/ioctl.h>
 119 #include <sys/errno.h>
 120 #if NRND > 0
 121 #include <sys/rnd.h>
 122 #endif
 123
 124 #include <net/if.h>
 125 #include <net/if_dl.h>
 126 #include <net/if_ether.h>
 127 #include <net/if_media.h>
 128
 129 #if NBPFILTER > 0
 130 #include <net/bpf.h>
 131 #include <net/bpfdesc.h>
 132 #endif
 133
 134 #include <dev/ic/lancereg.h>
 135 #include <dev/ic/lancevar.h>
 136 #include <dev/ic/am79900reg.h>
 137 #include <dev/ic/am79900var.h>
 138
 139 static void     am79900_meminit(struct lance_softc *);
 140 static void     am79900_start(struct ifnet *);
 141
 142 #if defined(_KERNEL_OPT)
 143 #include "opt_ddb.h"
 144 #endif
 145
 146 #ifdef LEDEBUG
 147 static void     am79900_recv_print(struct lance_softc *, int);
 148 static void     am79900_xmit_print(struct lance_softc *, int);
 149 #endif
 150
 151 #define ifp     (&sc->sc_ethercom.ec_if)
 152
 153 void
 154 am79900_config(struct am79900_softc *sc)
 155 {
 156         int mem, i;
 157
 158         sc->lsc.sc_meminit = am79900_meminit;
 159         sc->lsc.sc_start = am79900_start;
 160
 161         lance_config(&sc->lsc);
 162
 163         mem = 0;
 164         sc->lsc.sc_initaddr = mem;
 165         mem += sizeof(struct leinit);
 166         sc->lsc.sc_rmdaddr = mem;
 167         mem += sizeof(struct lermd) * sc->lsc.sc_nrbuf;
 168         sc->lsc.sc_tmdaddr = mem;
 169         mem += sizeof(struct letmd) * sc->lsc.sc_ntbuf;
 170         for (i = 0; i < sc->lsc.sc_nrbuf; i++, mem += LEBLEN)
 171                 sc->lsc.sc_rbufaddr[i] = mem;
 172         for (i = 0; i < sc->lsc.sc_ntbuf; i++, mem += LEBLEN)
 173                 sc->lsc.sc_tbufaddr[i] = mem;
 174
 175         if (mem > sc->lsc.sc_memsize)
 176                 panic("%s: memsize", device_xname(sc->lsc.sc_dev));
 177 }
 178
 179 /*
 180  * Set up the initialization block and the descriptor rings.
 181  */
 182 static void
 183 am79900_meminit(struct lance_softc *sc)
 184 {
 185         u_long a;
 186         int bix;
 187         struct leinit init;
 188         struct lermd rmd;
 189         struct letmd tmd;
 190         uint8_t *myaddr;
 191
 192 #if NBPFILTER > 0
 193         if (ifp->if_flags & IFF_PROMISC)
 194                 init.init_mode = LE_MODE_NORMAL | LE_MODE_PROM;
 195         else
 196 #endif
 197                 init.init_mode = LE_MODE_NORMAL;
 198         if (sc->sc_initmodemedia == 1)
 199                 init.init_mode |= LE_MODE_PSEL0;
 200
 201         init.init_mode |= ((ffs(sc->sc_ntbuf) - 1) << 28)
 202           | ((ffs(sc->sc_nrbuf) - 1) << 20);
 203
 204         /*
 205          * Update our private copy of the Ethernet address.
 206          * We NEED the copy so we can ensure its alignment!
 207          */
 208         memcpy(sc->sc_enaddr, CLLADDR(ifp->if_sadl), ETHER_ADDR_LEN);
 209         myaddr = sc->sc_enaddr;
 210
 211         init.init_padr[0] = myaddr[0] | (myaddr[1] << 8)
 212           | (myaddr[2] << 16) | (myaddr[3] << 24);
 213         init.init_padr[1] = myaddr[4] | (myaddr[5] << 8);
 214         lance_setladrf(&sc->sc_ethercom, init.init_ladrf);
 215
 216         sc->sc_last_rd = 0;
 217         sc->sc_first_td = sc->sc_last_td = sc->sc_no_td = 0;
 218
 219         a = sc->sc_addr + LE_RMDADDR(sc, 0);
 220         init.init_rdra = a;
 221
 222         a = sc->sc_addr + LE_TMDADDR(sc, 0);
 223         init.init_tdra = a;
 224
 225         (*sc->sc_copytodesc)(sc, &init, LE_INITADDR(sc), sizeof(init));
 226
 227         /*
 228          * Set up receive ring descriptors.
 229          */
 230         for (bix = 0; bix < sc->sc_nrbuf; bix++) {
 231                 a = sc->sc_addr + LE_RBUFADDR(sc, bix);
 232                 rmd.rmd0 = a;
 233                 rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff);
 234                 rmd.rmd2 = 0;
 235                 rmd.rmd3 = 0;
 236                 (*sc->sc_copytodesc)(sc, &rmd, LE_RMDADDR(sc, bix),
 237                     sizeof(rmd));
 238         }
 239
 240         /*
 241          * Set up transmit ring descriptors.
 242          */
 243         for (bix = 0; bix < sc->sc_ntbuf; bix++) {
 244                 a = sc->sc_addr + LE_TBUFADDR(sc, bix);
 245                 tmd.tmd0 = a;
 246                 tmd.tmd1 = LE_T1_ONES;
 247                 tmd.tmd2 = 0;
 248                 tmd.tmd3 = 0;
 249                 (*sc->sc_copytodesc)(sc, &tmd, LE_TMDADDR(sc, bix),
 250                     sizeof(tmd));
 251         }
 252 }
 253
 254 static inline void
 255 am79900_rint(struct lance_softc *sc)
 256 {
 257         int bix;
 258         int rp;
 259         struct lermd rmd;
 260
 261         bix = sc->sc_last_rd;
 262
 263         /* Process all buffers with valid data. */
 264         for (;;) {
 265                 rp = LE_RMDADDR(sc, bix);
 266                 (*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd));
 267
 268                 if (rmd.rmd1 & LE_R1_OWN)
 269                         break;
 270
 271                 if (rmd.rmd1 & LE_R1_ERR) {
 272                         if (rmd.rmd1 & LE_R1_ENP) {
 273 #ifdef LEDEBUG
 274                                 if ((rmd.rmd1 & LE_R1_OFLO) == 0) {
 275                                         if (rmd.rmd1 & LE_R1_FRAM)
 276                                                 printf("%s: framing error\n",
 277                                                     device_xname(sc->sc_dev));
 278                                         if (rmd.rmd1 & LE_R1_CRC)
 279                                                 printf("%s: crc mismatch\n",
 280                                                     device_xname(sc->sc_dev));
 281                                 }
 282 #endif
 283                         } else {
 284                                 if (rmd.rmd1 & LE_R1_OFLO)
 285                                         printf("%s: overflow\n",
 286                                             device_xname(sc->sc_dev));
 287                         }
 288                         if (rmd.rmd1 & LE_R1_BUFF)
 289                                 printf("%s: receive buffer error\n",
 290                                     device_xname(sc->sc_dev));
 291                         ifp->if_ierrors++;
 292                 } else if ((rmd.rmd1 & (LE_R1_STP | LE_R1_ENP)) !=
 293                     (LE_R1_STP | LE_R1_ENP)) {
 294                         printf("%s: dropping chained buffer\n",
 295                             device_xname(sc->sc_dev));
 296                         ifp->if_ierrors++;
 297                 } else {
 298 #ifdef LEDEBUG
 299                         if (sc->sc_debug)
 300                                 am79900_recv_print(sc, sc->sc_last_rd);
 301 #endif
 302                         lance_read(sc, LE_RBUFADDR(sc, bix),
 303                                    (rmd.rmd2  & 0xfff) - 4);
 304                 }
 305
 306                 rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff);
 307                 rmd.rmd2 = 0;
 308                 rmd.rmd3 = 0;
 309                 (*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd));
 310
 311 #ifdef LEDEBUG
 312                 if (sc->sc_debug)
 313                         printf("sc->sc_last_rd = %x, rmd: "
 314                                "adr %08x, flags/blen %08x\n",
 315                                 sc->sc_last_rd,
 316                                 rmd.rmd0, rmd.rmd1);
 317 #endif
 318
 319                 if (++bix == sc->sc_nrbuf)
 320                         bix = 0;
 321         }
 322
 323         sc->sc_last_rd = bix;
 324 }
 325
 326 static inline void
 327 am79900_tint(struct lance_softc *sc)
 328 {
 329         int bix;
 330         struct letmd tmd;
 331
 332         bix = sc->sc_first_td;
 333
 334         for (;;) {
 335                 if (sc->sc_no_td <= 0)
 336                         break;
 337
 338                 (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix),
 339                     sizeof(tmd));
 340
 341 #ifdef LEDEBUG
 342                 if (sc->sc_debug)
 343                         printf("trans tmd: "
 344                             "adr %08x, flags/blen %08x\n",
 345                             tmd.tmd0, tmd.tmd1);
 346 #endif
 347
 348                 if (tmd.tmd1 & LE_T1_OWN)
 349                         break;
 350
 351                 ifp->if_flags &= ~IFF_OACTIVE;
 352
 353                 if (tmd.tmd1 & LE_T1_ERR) {
 354                         if (tmd.tmd2 & LE_T2_BUFF)
 355                                 printf("%s: transmit buffer error\n",
 356                                     device_xname(sc->sc_dev));
 357                         else if (tmd.tmd2 & LE_T2_UFLO)
 358                                 printf("%s: underflow\n",
 359                                     device_xname(sc->sc_dev));
 360                         if (tmd.tmd2 & (LE_T2_BUFF | LE_T2_UFLO)) {
 361                                 lance_reset(sc);
 362                                 return;
 363                         }
 364                         if (tmd.tmd2 & LE_T2_LCAR) {
 365                                 sc->sc_havecarrier = 0;
 366                                 if (sc->sc_nocarrier)
 367                                         (*sc->sc_nocarrier)(sc);
 368                                 else
 369                                         printf("%s: lost carrier\n",
 370                                             device_xname(sc->sc_dev));
 371                         }
 372                         if (tmd.tmd2 & LE_T2_LCOL)
 373                                 ifp->if_collisions++;
 374                         if (tmd.tmd2 & LE_T2_RTRY) {
 375 #ifdef LEDEBUG
 376                                 printf("%s: excessive collisions\n",
 377                                     device_xname(sc->sc_dev));
 378 #endif
 379                                 ifp->if_collisions += 16;
 380                         }
 381                         ifp->if_oerrors++;
 382                 } else {
 383                         if (tmd.tmd1 & LE_T1_ONE)
 384                                 ifp->if_collisions++;
 385                         else if (tmd.tmd1 & LE_T1_MORE)
 386                                 /* Real number is unknown. */
 387                                 ifp->if_collisions += 2;
 388                         ifp->if_opackets++;
 389                 }
 390
 391                 if (++bix == sc->sc_ntbuf)
 392                         bix = 0;
 393
 394                 --sc->sc_no_td;
 395         }
 396
 397         sc->sc_first_td = bix;
 398
 399         am79900_start(ifp);
 400
 401         if (sc->sc_no_td == 0)
 402                 ifp->if_timer = 0;
 403 }
 404
 405 /*
 406  * Controller interrupt.
 407  */
 408 int
 409 am79900_intr(void *arg)
 410 {
 411         struct lance_softc *sc = arg;
 412         uint16_t isr;
 413
 414         isr = (*sc->sc_rdcsr)(sc, LE_CSR0) | sc->sc_saved_csr0;
 415         sc->sc_saved_csr0 = 0;
 416 #if defined(LEDEBUG) && LEDEBUG > 1
 417         if (sc->sc_debug)
 418                 printf("%s: am79900_intr entering with isr=%04x\n",
 419                     device_xname(sc->sc_dev), isr);
 420 #endif
 421         if ((isr & LE_C0_INTR) == 0)
 422                 return (0);
 423
 424         (*sc->sc_wrcsr)(sc, LE_CSR0,
 425             isr & (LE_C0_INEA | LE_C0_BABL | LE_C0_MISS | LE_C0_MERR |
 426                    LE_C0_RINT | LE_C0_TINT | LE_C0_IDON));
 427         if (isr & LE_C0_ERR) {
 428                 if (isr & LE_C0_BABL) {
 429 #ifdef LEDEBUG
 430                         printf("%s: babble\n", device_xname(sc->sc_dev));
 431 #endif
 432                         ifp->if_oerrors++;
 433                 }
 434 #if 0
 435                 if (isr & LE_C0_CERR) {
 436                         printf("%s: collision error\n",
 437                             device_xname(sc->sc_dev));
 438                         ifp->if_collisions++;
 439                 }
 440 #endif
 441                 if (isr & LE_C0_MISS) {
 442 #ifdef LEDEBUG
 443                         printf("%s: missed packet\n", device_xname(sc->sc_dev));
 444 #endif
 445                         ifp->if_ierrors++;
 446                 }
 447                 if (isr & LE_C0_MERR) {
 448                         printf("%s: memory error\n", device_xname(sc->sc_dev));
 449                         lance_reset(sc);
 450                         return (1);
 451                 }
 452         }
 453
 454         if ((isr & LE_C0_RXON) == 0) {
 455                 printf("%s: receiver disabled\n", device_xname(sc->sc_dev));
 456                 ifp->if_ierrors++;
 457                 lance_reset(sc);
 458                 return (1);
 459         }
 460         if ((isr & LE_C0_TXON) == 0) {
 461                 printf("%s: transmitter disabled\n", device_xname(sc->sc_dev));
 462                 ifp->if_oerrors++;
 463                 lance_reset(sc);
 464                 return (1);
 465         }
 466
 467         /*
 468          * Pretend we have carrier; if we don't this will be cleared
 469          * shortly.
 470          */
 471         sc->sc_havecarrier = 1;
 472
 473         if (isr & LE_C0_RINT)
 474                 am79900_rint(sc);
 475         if (isr & LE_C0_TINT)
 476                 am79900_tint(sc);
 477
 478 #if NRND > 0
 479         rnd_add_uint32(&sc->rnd_source, isr);
 480 #endif
 481
 482         return (1);
 483 }
 484
 485 #undef  ifp
 486
 487 /*
 488  * Setup output on interface.
 489  * Get another datagram to send off of the interface queue, and map it to the
 490  * interface before starting the output.
 491  * Called only at splnet or interrupt level.
 492  */
 493 static void
 494 am79900_start(struct ifnet *ifp)
 495 {
 496         struct lance_softc *sc = ifp->if_softc;
 497         int bix;
 498         struct mbuf *m;
 499         struct letmd tmd;
 500         int rp;
 501         int len;
 502
 503         if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
 504                 return;
 505
 506         bix = sc->sc_last_td;
 507
 508         for (;;) {
 509                 rp = LE_TMDADDR(sc, bix);
 510                 (*sc->sc_copyfromdesc)(sc, &tmd, rp, sizeof(tmd));
 511
 512                 if (tmd.tmd1 & LE_T1_OWN) {
 513                         ifp->if_flags |= IFF_OACTIVE;
 514                         printf("missing buffer, no_td = %d, last_td = %d\n",
 515                             sc->sc_no_td, sc->sc_last_td);
 516                 }
 517
 518                 IFQ_DEQUEUE(&ifp->if_snd, m);
 519                 if (m == 0)
 520                         break;
 521
 522 #if NBPFILTER > 0
 523                 /*
 524                  * If BPF is listening on this interface, let it see the packet
 525                  * before we commit it to the wire.
 526                  */
 527                 if (ifp->if_bpf)
 528                         bpf_mtap(ifp->if_bpf, m);
 529 #endif
 530
 531                 /*
 532                  * Copy the mbuf chain into the transmit buffer.
 533                  */
 534                 len = lance_put(sc, LE_TBUFADDR(sc, bix), m);
 535
 536 #ifdef LEDEBUG
 537                 if (len > ETHERMTU + sizeof(struct ether_header))
 538                         printf("packet length %d\n", len);
 539 #endif
 540
 541                 ifp->if_timer = 5;
 542
 543                 /*
 544                  * Init transmit registers, and set transmit start flag.
 545                  */
 546                 tmd.tmd1 = LE_T1_OWN | LE_T1_STP | LE_T1_ENP | LE_T1_ONES | (-len & 0xfff);
 547                 tmd.tmd2 = 0;
 548                 tmd.tmd3 = 0;
 549
 550                 (*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd));
 551
 552 #ifdef LEDEBUG
 553                 if (sc->sc_debug)
 554                         am79900_xmit_print(sc, sc->sc_last_td);
 555 #endif
 556
 557                 (*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA | LE_C0_TDMD);
 558
 559                 if (++bix == sc->sc_ntbuf)
 560                         bix = 0;
 561
 562                 if (++sc->sc_no_td == sc->sc_ntbuf) {
 563                         ifp->if_flags |= IFF_OACTIVE;
 564                         break;
 565                 }
 566
 567         }
 568
 569         sc->sc_last_td = bix;
 570 }
 571
 572 #ifdef LEDEBUG
 573 static void
 574 am79900_recv_print(struct lance_softc *sc, int no)
 575 {
 576         struct lermd rmd;
 577         uint16_t len;
 578         struct ether_header eh;
 579
 580         (*sc->sc_copyfromdesc)(sc, &rmd, LE_RMDADDR(sc, no), sizeof(rmd));
 581         len = (rmd.rmd2  & 0xfff) - 4;
 582         printf("%s: receive buffer %d, len = %d\n",
 583             device_xname(sc->sc_dev), no, len);
 584         printf("%s: status %04x\n", device_xname(sc->sc_dev),
 585             (*sc->sc_rdcsr)(sc, LE_CSR0));
 586         printf("%s: adr %08x, flags/blen %08x\n",
 587             device_xname(sc->sc_dev), rmd.rmd0, rmd.rmd1);
 588         if (len >= sizeof(eh)) {
 589                 (*sc->sc_copyfrombuf)(sc, &eh, LE_RBUFADDR(sc, no), sizeof(eh));
 590                 printf("%s: dst %s", device_xname(sc->sc_dev),
 591                         ether_sprintf(eh.ether_dhost));
 592                 printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost),
 593                         ntohs(eh.ether_type));
 594         }
 595 }
 596
 597 static void
 598 am79900_xmit_print(struct lance_softc *sc, int no)
 599 {
 600         struct letmd tmd;
 601         uint16_t len;
 602         struct ether_header eh;
 603
 604         (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, no), sizeof(tmd));
 605         len = -(tmd.tmd1 & 0xfff);
 606         printf("%s: transmit buffer %d, len = %d\n",
 607             device_xname(sc->sc_dev), no, len);
 608         printf("%s: status %04x\n", device_xname(sc->sc_dev),
 609             (*sc->sc_rdcsr)(sc, LE_CSR0));
 610         printf("%s: adr %08x, flags/blen %08x\n",
 611             device_xname(sc->sc_dev), tmd.tmd0, tmd.tmd1);
 612         if (len >= sizeof(eh)) {
 613                 (*sc->sc_copyfrombuf)(sc, &eh, LE_TBUFADDR(sc, no), sizeof(eh));
 614                 printf("%s: dst %s", device_xname(sc->sc_dev),
 615                         ether_sprintf(eh.ether_dhost));
 616                 printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost),
 617                     ntohs(eh.ether_type));
 618         }
 619 }
 620 #endif /* LEDEBUG */