xref: /netbsd-src/sys/dev/ic/am79900.c (revision c38e7cc395b1472a774ff828e46123de44c628e9)
1 /*	$NetBSD: am79900.c,v 1.26 2017/05/23 04:51:31 ozaki-r 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 1.26 2017/05/23 04:51:31 ozaki-r Exp $");
107 
108 #include <sys/param.h>
109 #include <sys/systm.h>
110 #include <sys/mbuf.h>
111 #include <sys/syslog.h>
112 #include <sys/socket.h>
113 #include <sys/device.h>
114 #include <sys/malloc.h>
115 #include <sys/ioctl.h>
116 #include <sys/errno.h>
117 #include <sys/rndsource.h>
118 
119 #include <net/if.h>
120 #include <net/if_dl.h>
121 #include <net/if_ether.h>
122 #include <net/if_media.h>
123 
124 #include <net/bpf.h>
125 #include <net/bpfdesc.h>
126 
127 #include <dev/ic/lancereg.h>
128 #include <dev/ic/lancevar.h>
129 #include <dev/ic/am79900reg.h>
130 #include <dev/ic/am79900var.h>
131 
132 static void	am79900_meminit(struct lance_softc *);
133 static void	am79900_start(struct ifnet *);
134 
135 #if defined(_KERNEL_OPT)
136 #include "opt_ddb.h"
137 #endif
138 
139 #ifdef LEDEBUG
140 static void	am79900_recv_print(struct lance_softc *, int);
141 static void	am79900_xmit_print(struct lance_softc *, int);
142 #endif
143 
144 #define	ifp	(&sc->sc_ethercom.ec_if)
145 
146 void
147 am79900_config(struct am79900_softc *sc)
148 {
149 	int mem, i;
150 
151 	sc->lsc.sc_meminit = am79900_meminit;
152 	sc->lsc.sc_start = am79900_start;
153 
154 	lance_config(&sc->lsc);
155 	if_deferred_start_init(&sc->lsc.sc_ethercom.ec_if, NULL);
156 
157 	mem = 0;
158 	sc->lsc.sc_initaddr = mem;
159 	mem += sizeof(struct leinit);
160 	sc->lsc.sc_rmdaddr = mem;
161 	mem += sizeof(struct lermd) * sc->lsc.sc_nrbuf;
162 	sc->lsc.sc_tmdaddr = mem;
163 	mem += sizeof(struct letmd) * sc->lsc.sc_ntbuf;
164 	for (i = 0; i < sc->lsc.sc_nrbuf; i++, mem += LEBLEN)
165 		sc->lsc.sc_rbufaddr[i] = mem;
166 	for (i = 0; i < sc->lsc.sc_ntbuf; i++, mem += LEBLEN)
167 		sc->lsc.sc_tbufaddr[i] = mem;
168 
169 	if (mem > sc->lsc.sc_memsize)
170 		panic("%s: memsize", device_xname(sc->lsc.sc_dev));
171 }
172 
173 /*
174  * Set up the initialization block and the descriptor rings.
175  */
176 static void
177 am79900_meminit(struct lance_softc *sc)
178 {
179 	u_long a;
180 	int bix;
181 	struct leinit init;
182 	struct lermd rmd;
183 	struct letmd tmd;
184 	uint8_t *myaddr;
185 
186 	if (ifp->if_flags & IFF_PROMISC)
187 		init.init_mode = LE_MODE_NORMAL | LE_MODE_PROM;
188 	else
189 		init.init_mode = LE_MODE_NORMAL;
190 	if (sc->sc_initmodemedia == 1)
191 		init.init_mode |= LE_MODE_PSEL0;
192 
193 	init.init_mode |= ((ffs(sc->sc_ntbuf) - 1) << 28)
194 	  | ((ffs(sc->sc_nrbuf) - 1) << 20);
195 
196 	/*
197 	 * Update our private copy of the Ethernet address.
198 	 * We NEED the copy so we can ensure its alignment!
199 	 */
200 	memcpy(sc->sc_enaddr, CLLADDR(ifp->if_sadl), ETHER_ADDR_LEN);
201 	myaddr = sc->sc_enaddr;
202 
203 	init.init_padr[0] = myaddr[0] | (myaddr[1] << 8)
204 	  | (myaddr[2] << 16) | (myaddr[3] << 24);
205 	init.init_padr[1] = myaddr[4] | (myaddr[5] << 8);
206 	lance_setladrf(&sc->sc_ethercom, init.init_ladrf);
207 
208 	sc->sc_last_rd = 0;
209 	sc->sc_first_td = sc->sc_last_td = sc->sc_no_td = 0;
210 
211 	a = sc->sc_addr + LE_RMDADDR(sc, 0);
212 	init.init_rdra = a;
213 
214 	a = sc->sc_addr + LE_TMDADDR(sc, 0);
215 	init.init_tdra = a;
216 
217 	(*sc->sc_copytodesc)(sc, &init, LE_INITADDR(sc), sizeof(init));
218 
219 	/*
220 	 * Set up receive ring descriptors.
221 	 */
222 	for (bix = 0; bix < sc->sc_nrbuf; bix++) {
223 		a = sc->sc_addr + LE_RBUFADDR(sc, bix);
224 		rmd.rmd0 = a;
225 		rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff);
226 		rmd.rmd2 = 0;
227 		rmd.rmd3 = 0;
228 		(*sc->sc_copytodesc)(sc, &rmd, LE_RMDADDR(sc, bix),
229 		    sizeof(rmd));
230 	}
231 
232 	/*
233 	 * Set up transmit ring descriptors.
234 	 */
235 	for (bix = 0; bix < sc->sc_ntbuf; bix++) {
236 		a = sc->sc_addr + LE_TBUFADDR(sc, bix);
237 		tmd.tmd0 = a;
238 		tmd.tmd1 = LE_T1_ONES;
239 		tmd.tmd2 = 0;
240 		tmd.tmd3 = 0;
241 		(*sc->sc_copytodesc)(sc, &tmd, LE_TMDADDR(sc, bix),
242 		    sizeof(tmd));
243 	}
244 }
245 
246 static inline void
247 am79900_rint(struct lance_softc *sc)
248 {
249 	int bix;
250 	int rp;
251 	struct lermd rmd;
252 
253 	bix = sc->sc_last_rd;
254 
255 	/* Process all buffers with valid data. */
256 	for (;;) {
257 		rp = LE_RMDADDR(sc, bix);
258 		(*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd));
259 
260 		if (rmd.rmd1 & LE_R1_OWN)
261 			break;
262 
263 		if (rmd.rmd1 & LE_R1_ERR) {
264 			if (rmd.rmd1 & LE_R1_ENP) {
265 #ifdef LEDEBUG
266 				if ((rmd.rmd1 & LE_R1_OFLO) == 0) {
267 					if (rmd.rmd1 & LE_R1_FRAM)
268 						printf("%s: framing error\n",
269 						    device_xname(sc->sc_dev));
270 					if (rmd.rmd1 & LE_R1_CRC)
271 						printf("%s: crc mismatch\n",
272 						    device_xname(sc->sc_dev));
273 				}
274 #endif
275 			} else {
276 				if (rmd.rmd1 & LE_R1_OFLO)
277 					printf("%s: overflow\n",
278 					    device_xname(sc->sc_dev));
279 			}
280 			if (rmd.rmd1 & LE_R1_BUFF)
281 				printf("%s: receive buffer error\n",
282 				    device_xname(sc->sc_dev));
283 			ifp->if_ierrors++;
284 		} else if ((rmd.rmd1 & (LE_R1_STP | LE_R1_ENP)) !=
285 		    (LE_R1_STP | LE_R1_ENP)) {
286 			printf("%s: dropping chained buffer\n",
287 			    device_xname(sc->sc_dev));
288 			ifp->if_ierrors++;
289 		} else {
290 #ifdef LEDEBUG
291 			if (sc->sc_debug)
292 				am79900_recv_print(sc, sc->sc_last_rd);
293 #endif
294 			lance_read(sc, LE_RBUFADDR(sc, bix),
295 				   (rmd.rmd2  & 0xfff) - 4);
296 		}
297 
298 		rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff);
299 		rmd.rmd2 = 0;
300 		rmd.rmd3 = 0;
301 		(*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd));
302 
303 #ifdef LEDEBUG
304 		if (sc->sc_debug)
305 			printf("sc->sc_last_rd = %x, rmd: "
306 			       "adr %08x, flags/blen %08x\n",
307 				sc->sc_last_rd,
308 				rmd.rmd0, rmd.rmd1);
309 #endif
310 
311 		if (++bix == sc->sc_nrbuf)
312 			bix = 0;
313 	}
314 
315 	sc->sc_last_rd = bix;
316 }
317 
318 static inline void
319 am79900_tint(struct lance_softc *sc)
320 {
321 	int bix;
322 	struct letmd tmd;
323 
324 	bix = sc->sc_first_td;
325 
326 	for (;;) {
327 		if (sc->sc_no_td <= 0)
328 			break;
329 
330 		(*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix),
331 		    sizeof(tmd));
332 
333 #ifdef LEDEBUG
334 		if (sc->sc_debug)
335 			printf("trans tmd: "
336 			    "adr %08x, flags/blen %08x\n",
337 			    tmd.tmd0, tmd.tmd1);
338 #endif
339 
340 		if (tmd.tmd1 & LE_T1_OWN)
341 			break;
342 
343 		ifp->if_flags &= ~IFF_OACTIVE;
344 
345 		if (tmd.tmd1 & LE_T1_ERR) {
346 			if (tmd.tmd2 & LE_T2_BUFF)
347 				printf("%s: transmit buffer error\n",
348 				    device_xname(sc->sc_dev));
349 			else if (tmd.tmd2 & LE_T2_UFLO)
350 				printf("%s: underflow\n",
351 				    device_xname(sc->sc_dev));
352 			if (tmd.tmd2 & (LE_T2_BUFF | LE_T2_UFLO)) {
353 				lance_reset(sc);
354 				return;
355 			}
356 			if (tmd.tmd2 & LE_T2_LCAR) {
357 				sc->sc_havecarrier = 0;
358 				if (sc->sc_nocarrier)
359 					(*sc->sc_nocarrier)(sc);
360 				else
361 					printf("%s: lost carrier\n",
362 					    device_xname(sc->sc_dev));
363 			}
364 			if (tmd.tmd2 & LE_T2_LCOL)
365 				ifp->if_collisions++;
366 			if (tmd.tmd2 & LE_T2_RTRY) {
367 #ifdef LEDEBUG
368 				printf("%s: excessive collisions\n",
369 				    device_xname(sc->sc_dev));
370 #endif
371 				ifp->if_collisions += 16;
372 			}
373 			ifp->if_oerrors++;
374 		} else {
375 			if (tmd.tmd1 & LE_T1_ONE)
376 				ifp->if_collisions++;
377 			else if (tmd.tmd1 & LE_T1_MORE)
378 				/* Real number is unknown. */
379 				ifp->if_collisions += 2;
380 			ifp->if_opackets++;
381 		}
382 
383 		if (++bix == sc->sc_ntbuf)
384 			bix = 0;
385 
386 		--sc->sc_no_td;
387 	}
388 
389 	sc->sc_first_td = bix;
390 
391 	if_schedule_deferred_start(ifp);
392 
393 	if (sc->sc_no_td == 0)
394 		ifp->if_timer = 0;
395 }
396 
397 /*
398  * Controller interrupt.
399  */
400 int
401 am79900_intr(void *arg)
402 {
403 	struct lance_softc *sc = arg;
404 	uint16_t isr;
405 
406 	isr = (*sc->sc_rdcsr)(sc, LE_CSR0) | sc->sc_saved_csr0;
407 	sc->sc_saved_csr0 = 0;
408 #if defined(LEDEBUG) && LEDEBUG > 1
409 	if (sc->sc_debug)
410 		printf("%s: am79900_intr entering with isr=%04x\n",
411 		    device_xname(sc->sc_dev), isr);
412 #endif
413 	if ((isr & LE_C0_INTR) == 0)
414 		return (0);
415 
416 	(*sc->sc_wrcsr)(sc, LE_CSR0,
417 	    isr & (LE_C0_INEA | LE_C0_BABL | LE_C0_MISS | LE_C0_MERR |
418 		   LE_C0_RINT | LE_C0_TINT | LE_C0_IDON));
419 	if (isr & LE_C0_ERR) {
420 		if (isr & LE_C0_BABL) {
421 #ifdef LEDEBUG
422 			printf("%s: babble\n", device_xname(sc->sc_dev));
423 #endif
424 			ifp->if_oerrors++;
425 		}
426 #if 0
427 		if (isr & LE_C0_CERR) {
428 			printf("%s: collision error\n",
429 			    device_xname(sc->sc_dev));
430 			ifp->if_collisions++;
431 		}
432 #endif
433 		if (isr & LE_C0_MISS) {
434 #ifdef LEDEBUG
435 			printf("%s: missed packet\n", device_xname(sc->sc_dev));
436 #endif
437 			ifp->if_ierrors++;
438 		}
439 		if (isr & LE_C0_MERR) {
440 			printf("%s: memory error\n", device_xname(sc->sc_dev));
441 			lance_reset(sc);
442 			return (1);
443 		}
444 	}
445 
446 	if ((isr & LE_C0_RXON) == 0) {
447 		printf("%s: receiver disabled\n", device_xname(sc->sc_dev));
448 		ifp->if_ierrors++;
449 		lance_reset(sc);
450 		return (1);
451 	}
452 	if ((isr & LE_C0_TXON) == 0) {
453 		printf("%s: transmitter disabled\n", device_xname(sc->sc_dev));
454 		ifp->if_oerrors++;
455 		lance_reset(sc);
456 		return (1);
457 	}
458 
459 	/*
460 	 * Pretend we have carrier; if we don't this will be cleared
461 	 * shortly.
462 	 */
463 	sc->sc_havecarrier = 1;
464 
465 	if (isr & LE_C0_RINT)
466 		am79900_rint(sc);
467 	if (isr & LE_C0_TINT)
468 		am79900_tint(sc);
469 
470 	rnd_add_uint32(&sc->rnd_source, isr);
471 
472 	return (1);
473 }
474 
475 #undef	ifp
476 
477 /*
478  * Setup output on interface.
479  * Get another datagram to send off of the interface queue, and map it to the
480  * interface before starting the output.
481  * Called only at splnet or interrupt level.
482  */
483 static void
484 am79900_start(struct ifnet *ifp)
485 {
486 	struct lance_softc *sc = ifp->if_softc;
487 	int bix;
488 	struct mbuf *m;
489 	struct letmd tmd;
490 	int rp;
491 	int len;
492 
493 	if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
494 		return;
495 
496 	bix = sc->sc_last_td;
497 
498 	for (;;) {
499 		rp = LE_TMDADDR(sc, bix);
500 		(*sc->sc_copyfromdesc)(sc, &tmd, rp, sizeof(tmd));
501 
502 		if (tmd.tmd1 & LE_T1_OWN) {
503 			ifp->if_flags |= IFF_OACTIVE;
504 			printf("missing buffer, no_td = %d, last_td = %d\n",
505 			    sc->sc_no_td, sc->sc_last_td);
506 		}
507 
508 		IFQ_DEQUEUE(&ifp->if_snd, m);
509 		if (m == 0)
510 			break;
511 
512 		/*
513 		 * If BPF is listening on this interface, let it see the packet
514 		 * before we commit it to the wire.
515 		 */
516 		bpf_mtap(ifp, m);
517 
518 		/*
519 		 * Copy the mbuf chain into the transmit buffer.
520 		 */
521 		len = lance_put(sc, LE_TBUFADDR(sc, bix), m);
522 
523 #ifdef LEDEBUG
524 		if (len > ETHERMTU + sizeof(struct ether_header))
525 			printf("packet length %d\n", len);
526 #endif
527 
528 		ifp->if_timer = 5;
529 
530 		/*
531 		 * Init transmit registers, and set transmit start flag.
532 		 */
533 		tmd.tmd1 = LE_T1_OWN | LE_T1_STP | LE_T1_ENP | LE_T1_ONES | (-len & 0xfff);
534 		tmd.tmd2 = 0;
535 		tmd.tmd3 = 0;
536 
537 		(*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd));
538 
539 #ifdef LEDEBUG
540 		if (sc->sc_debug)
541 			am79900_xmit_print(sc, sc->sc_last_td);
542 #endif
543 
544 		(*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA | LE_C0_TDMD);
545 
546 		if (++bix == sc->sc_ntbuf)
547 			bix = 0;
548 
549 		if (++sc->sc_no_td == sc->sc_ntbuf) {
550 			ifp->if_flags |= IFF_OACTIVE;
551 			break;
552 		}
553 
554 	}
555 
556 	sc->sc_last_td = bix;
557 }
558 
559 #ifdef LEDEBUG
560 static void
561 am79900_recv_print(struct lance_softc *sc, int no)
562 {
563 	struct lermd rmd;
564 	uint16_t len;
565 	struct ether_header eh;
566 
567 	(*sc->sc_copyfromdesc)(sc, &rmd, LE_RMDADDR(sc, no), sizeof(rmd));
568 	len = (rmd.rmd2  & 0xfff) - 4;
569 	printf("%s: receive buffer %d, len = %d\n",
570 	    device_xname(sc->sc_dev), no, len);
571 	printf("%s: status %04x\n", device_xname(sc->sc_dev),
572 	    (*sc->sc_rdcsr)(sc, LE_CSR0));
573 	printf("%s: adr %08x, flags/blen %08x\n",
574 	    device_xname(sc->sc_dev), rmd.rmd0, rmd.rmd1);
575 	if (len >= sizeof(eh)) {
576 		(*sc->sc_copyfrombuf)(sc, &eh, LE_RBUFADDR(sc, no), sizeof(eh));
577 		printf("%s: dst %s", device_xname(sc->sc_dev),
578 			ether_sprintf(eh.ether_dhost));
579 		printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost),
580 			ntohs(eh.ether_type));
581 	}
582 }
583 
584 static void
585 am79900_xmit_print(struct lance_softc *sc, int no)
586 {
587 	struct letmd tmd;
588 	uint16_t len;
589 	struct ether_header eh;
590 
591 	(*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, no), sizeof(tmd));
592 	len = -(tmd.tmd1 & 0xfff);
593 	printf("%s: transmit buffer %d, len = %d\n",
594 	    device_xname(sc->sc_dev), no, len);
595 	printf("%s: status %04x\n", device_xname(sc->sc_dev),
596 	    (*sc->sc_rdcsr)(sc, LE_CSR0));
597 	printf("%s: adr %08x, flags/blen %08x\n",
598 	    device_xname(sc->sc_dev), tmd.tmd0, tmd.tmd1);
599 	if (len >= sizeof(eh)) {
600 		(*sc->sc_copyfrombuf)(sc, &eh, LE_TBUFADDR(sc, no), sizeof(eh));
601 		printf("%s: dst %s", device_xname(sc->sc_dev),
602 			ether_sprintf(eh.ether_dhost));
603 		printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost),
604 		    ntohs(eh.ether_type));
605 	}
606 }
607 #endif /* LEDEBUG */
608