xref: /netbsd-src/sys/dev/ic/am79900.c (revision 6a493d6bc668897c91594964a732d38505b70cbb)
1 /*	$NetBSD: am79900.c,v 1.23 2012/02/02 19:43:02 tls 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 1.23 2012/02/02 19:43:02 tls 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/rnd.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 
156 	mem = 0;
157 	sc->lsc.sc_initaddr = mem;
158 	mem += sizeof(struct leinit);
159 	sc->lsc.sc_rmdaddr = mem;
160 	mem += sizeof(struct lermd) * sc->lsc.sc_nrbuf;
161 	sc->lsc.sc_tmdaddr = mem;
162 	mem += sizeof(struct letmd) * sc->lsc.sc_ntbuf;
163 	for (i = 0; i < sc->lsc.sc_nrbuf; i++, mem += LEBLEN)
164 		sc->lsc.sc_rbufaddr[i] = mem;
165 	for (i = 0; i < sc->lsc.sc_ntbuf; i++, mem += LEBLEN)
166 		sc->lsc.sc_tbufaddr[i] = mem;
167 
168 	if (mem > sc->lsc.sc_memsize)
169 		panic("%s: memsize", device_xname(sc->lsc.sc_dev));
170 }
171 
172 /*
173  * Set up the initialization block and the descriptor rings.
174  */
175 static void
176 am79900_meminit(struct lance_softc *sc)
177 {
178 	u_long a;
179 	int bix;
180 	struct leinit init;
181 	struct lermd rmd;
182 	struct letmd tmd;
183 	uint8_t *myaddr;
184 
185 	if (ifp->if_flags & IFF_PROMISC)
186 		init.init_mode = LE_MODE_NORMAL | LE_MODE_PROM;
187 	else
188 		init.init_mode = LE_MODE_NORMAL;
189 	if (sc->sc_initmodemedia == 1)
190 		init.init_mode |= LE_MODE_PSEL0;
191 
192 	init.init_mode |= ((ffs(sc->sc_ntbuf) - 1) << 28)
193 	  | ((ffs(sc->sc_nrbuf) - 1) << 20);
194 
195 	/*
196 	 * Update our private copy of the Ethernet address.
197 	 * We NEED the copy so we can ensure its alignment!
198 	 */
199 	memcpy(sc->sc_enaddr, CLLADDR(ifp->if_sadl), ETHER_ADDR_LEN);
200 	myaddr = sc->sc_enaddr;
201 
202 	init.init_padr[0] = myaddr[0] | (myaddr[1] << 8)
203 	  | (myaddr[2] << 16) | (myaddr[3] << 24);
204 	init.init_padr[1] = myaddr[4] | (myaddr[5] << 8);
205 	lance_setladrf(&sc->sc_ethercom, init.init_ladrf);
206 
207 	sc->sc_last_rd = 0;
208 	sc->sc_first_td = sc->sc_last_td = sc->sc_no_td = 0;
209 
210 	a = sc->sc_addr + LE_RMDADDR(sc, 0);
211 	init.init_rdra = a;
212 
213 	a = sc->sc_addr + LE_TMDADDR(sc, 0);
214 	init.init_tdra = a;
215 
216 	(*sc->sc_copytodesc)(sc, &init, LE_INITADDR(sc), sizeof(init));
217 
218 	/*
219 	 * Set up receive ring descriptors.
220 	 */
221 	for (bix = 0; bix < sc->sc_nrbuf; bix++) {
222 		a = sc->sc_addr + LE_RBUFADDR(sc, bix);
223 		rmd.rmd0 = a;
224 		rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff);
225 		rmd.rmd2 = 0;
226 		rmd.rmd3 = 0;
227 		(*sc->sc_copytodesc)(sc, &rmd, LE_RMDADDR(sc, bix),
228 		    sizeof(rmd));
229 	}
230 
231 	/*
232 	 * Set up transmit ring descriptors.
233 	 */
234 	for (bix = 0; bix < sc->sc_ntbuf; bix++) {
235 		a = sc->sc_addr + LE_TBUFADDR(sc, bix);
236 		tmd.tmd0 = a;
237 		tmd.tmd1 = LE_T1_ONES;
238 		tmd.tmd2 = 0;
239 		tmd.tmd3 = 0;
240 		(*sc->sc_copytodesc)(sc, &tmd, LE_TMDADDR(sc, bix),
241 		    sizeof(tmd));
242 	}
243 }
244 
245 static inline void
246 am79900_rint(struct lance_softc *sc)
247 {
248 	int bix;
249 	int rp;
250 	struct lermd rmd;
251 
252 	bix = sc->sc_last_rd;
253 
254 	/* Process all buffers with valid data. */
255 	for (;;) {
256 		rp = LE_RMDADDR(sc, bix);
257 		(*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd));
258 
259 		if (rmd.rmd1 & LE_R1_OWN)
260 			break;
261 
262 		if (rmd.rmd1 & LE_R1_ERR) {
263 			if (rmd.rmd1 & LE_R1_ENP) {
264 #ifdef LEDEBUG
265 				if ((rmd.rmd1 & LE_R1_OFLO) == 0) {
266 					if (rmd.rmd1 & LE_R1_FRAM)
267 						printf("%s: framing error\n",
268 						    device_xname(sc->sc_dev));
269 					if (rmd.rmd1 & LE_R1_CRC)
270 						printf("%s: crc mismatch\n",
271 						    device_xname(sc->sc_dev));
272 				}
273 #endif
274 			} else {
275 				if (rmd.rmd1 & LE_R1_OFLO)
276 					printf("%s: overflow\n",
277 					    device_xname(sc->sc_dev));
278 			}
279 			if (rmd.rmd1 & LE_R1_BUFF)
280 				printf("%s: receive buffer error\n",
281 				    device_xname(sc->sc_dev));
282 			ifp->if_ierrors++;
283 		} else if ((rmd.rmd1 & (LE_R1_STP | LE_R1_ENP)) !=
284 		    (LE_R1_STP | LE_R1_ENP)) {
285 			printf("%s: dropping chained buffer\n",
286 			    device_xname(sc->sc_dev));
287 			ifp->if_ierrors++;
288 		} else {
289 #ifdef LEDEBUG
290 			if (sc->sc_debug)
291 				am79900_recv_print(sc, sc->sc_last_rd);
292 #endif
293 			lance_read(sc, LE_RBUFADDR(sc, bix),
294 				   (rmd.rmd2  & 0xfff) - 4);
295 		}
296 
297 		rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff);
298 		rmd.rmd2 = 0;
299 		rmd.rmd3 = 0;
300 		(*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd));
301 
302 #ifdef LEDEBUG
303 		if (sc->sc_debug)
304 			printf("sc->sc_last_rd = %x, rmd: "
305 			       "adr %08x, flags/blen %08x\n",
306 				sc->sc_last_rd,
307 				rmd.rmd0, rmd.rmd1);
308 #endif
309 
310 		if (++bix == sc->sc_nrbuf)
311 			bix = 0;
312 	}
313 
314 	sc->sc_last_rd = bix;
315 }
316 
317 static inline void
318 am79900_tint(struct lance_softc *sc)
319 {
320 	int bix;
321 	struct letmd tmd;
322 
323 	bix = sc->sc_first_td;
324 
325 	for (;;) {
326 		if (sc->sc_no_td <= 0)
327 			break;
328 
329 		(*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix),
330 		    sizeof(tmd));
331 
332 #ifdef LEDEBUG
333 		if (sc->sc_debug)
334 			printf("trans tmd: "
335 			    "adr %08x, flags/blen %08x\n",
336 			    tmd.tmd0, tmd.tmd1);
337 #endif
338 
339 		if (tmd.tmd1 & LE_T1_OWN)
340 			break;
341 
342 		ifp->if_flags &= ~IFF_OACTIVE;
343 
344 		if (tmd.tmd1 & LE_T1_ERR) {
345 			if (tmd.tmd2 & LE_T2_BUFF)
346 				printf("%s: transmit buffer error\n",
347 				    device_xname(sc->sc_dev));
348 			else if (tmd.tmd2 & LE_T2_UFLO)
349 				printf("%s: underflow\n",
350 				    device_xname(sc->sc_dev));
351 			if (tmd.tmd2 & (LE_T2_BUFF | LE_T2_UFLO)) {
352 				lance_reset(sc);
353 				return;
354 			}
355 			if (tmd.tmd2 & LE_T2_LCAR) {
356 				sc->sc_havecarrier = 0;
357 				if (sc->sc_nocarrier)
358 					(*sc->sc_nocarrier)(sc);
359 				else
360 					printf("%s: lost carrier\n",
361 					    device_xname(sc->sc_dev));
362 			}
363 			if (tmd.tmd2 & LE_T2_LCOL)
364 				ifp->if_collisions++;
365 			if (tmd.tmd2 & LE_T2_RTRY) {
366 #ifdef LEDEBUG
367 				printf("%s: excessive collisions\n",
368 				    device_xname(sc->sc_dev));
369 #endif
370 				ifp->if_collisions += 16;
371 			}
372 			ifp->if_oerrors++;
373 		} else {
374 			if (tmd.tmd1 & LE_T1_ONE)
375 				ifp->if_collisions++;
376 			else if (tmd.tmd1 & LE_T1_MORE)
377 				/* Real number is unknown. */
378 				ifp->if_collisions += 2;
379 			ifp->if_opackets++;
380 		}
381 
382 		if (++bix == sc->sc_ntbuf)
383 			bix = 0;
384 
385 		--sc->sc_no_td;
386 	}
387 
388 	sc->sc_first_td = bix;
389 
390 	am79900_start(ifp);
391 
392 	if (sc->sc_no_td == 0)
393 		ifp->if_timer = 0;
394 }
395 
396 /*
397  * Controller interrupt.
398  */
399 int
400 am79900_intr(void *arg)
401 {
402 	struct lance_softc *sc = arg;
403 	uint16_t isr;
404 
405 	isr = (*sc->sc_rdcsr)(sc, LE_CSR0) | sc->sc_saved_csr0;
406 	sc->sc_saved_csr0 = 0;
407 #if defined(LEDEBUG) && LEDEBUG > 1
408 	if (sc->sc_debug)
409 		printf("%s: am79900_intr entering with isr=%04x\n",
410 		    device_xname(sc->sc_dev), isr);
411 #endif
412 	if ((isr & LE_C0_INTR) == 0)
413 		return (0);
414 
415 	(*sc->sc_wrcsr)(sc, LE_CSR0,
416 	    isr & (LE_C0_INEA | LE_C0_BABL | LE_C0_MISS | LE_C0_MERR |
417 		   LE_C0_RINT | LE_C0_TINT | LE_C0_IDON));
418 	if (isr & LE_C0_ERR) {
419 		if (isr & LE_C0_BABL) {
420 #ifdef LEDEBUG
421 			printf("%s: babble\n", device_xname(sc->sc_dev));
422 #endif
423 			ifp->if_oerrors++;
424 		}
425 #if 0
426 		if (isr & LE_C0_CERR) {
427 			printf("%s: collision error\n",
428 			    device_xname(sc->sc_dev));
429 			ifp->if_collisions++;
430 		}
431 #endif
432 		if (isr & LE_C0_MISS) {
433 #ifdef LEDEBUG
434 			printf("%s: missed packet\n", device_xname(sc->sc_dev));
435 #endif
436 			ifp->if_ierrors++;
437 		}
438 		if (isr & LE_C0_MERR) {
439 			printf("%s: memory error\n", device_xname(sc->sc_dev));
440 			lance_reset(sc);
441 			return (1);
442 		}
443 	}
444 
445 	if ((isr & LE_C0_RXON) == 0) {
446 		printf("%s: receiver disabled\n", device_xname(sc->sc_dev));
447 		ifp->if_ierrors++;
448 		lance_reset(sc);
449 		return (1);
450 	}
451 	if ((isr & LE_C0_TXON) == 0) {
452 		printf("%s: transmitter disabled\n", device_xname(sc->sc_dev));
453 		ifp->if_oerrors++;
454 		lance_reset(sc);
455 		return (1);
456 	}
457 
458 	/*
459 	 * Pretend we have carrier; if we don't this will be cleared
460 	 * shortly.
461 	 */
462 	sc->sc_havecarrier = 1;
463 
464 	if (isr & LE_C0_RINT)
465 		am79900_rint(sc);
466 	if (isr & LE_C0_TINT)
467 		am79900_tint(sc);
468 
469 	rnd_add_uint32(&sc->rnd_source, isr);
470 
471 	return (1);
472 }
473 
474 #undef	ifp
475 
476 /*
477  * Setup output on interface.
478  * Get another datagram to send off of the interface queue, and map it to the
479  * interface before starting the output.
480  * Called only at splnet or interrupt level.
481  */
482 static void
483 am79900_start(struct ifnet *ifp)
484 {
485 	struct lance_softc *sc = ifp->if_softc;
486 	int bix;
487 	struct mbuf *m;
488 	struct letmd tmd;
489 	int rp;
490 	int len;
491 
492 	if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
493 		return;
494 
495 	bix = sc->sc_last_td;
496 
497 	for (;;) {
498 		rp = LE_TMDADDR(sc, bix);
499 		(*sc->sc_copyfromdesc)(sc, &tmd, rp, sizeof(tmd));
500 
501 		if (tmd.tmd1 & LE_T1_OWN) {
502 			ifp->if_flags |= IFF_OACTIVE;
503 			printf("missing buffer, no_td = %d, last_td = %d\n",
504 			    sc->sc_no_td, sc->sc_last_td);
505 		}
506 
507 		IFQ_DEQUEUE(&ifp->if_snd, m);
508 		if (m == 0)
509 			break;
510 
511 		/*
512 		 * If BPF is listening on this interface, let it see the packet
513 		 * before we commit it to the wire.
514 		 */
515 		bpf_mtap(ifp, m);
516 
517 		/*
518 		 * Copy the mbuf chain into the transmit buffer.
519 		 */
520 		len = lance_put(sc, LE_TBUFADDR(sc, bix), m);
521 
522 #ifdef LEDEBUG
523 		if (len > ETHERMTU + sizeof(struct ether_header))
524 			printf("packet length %d\n", len);
525 #endif
526 
527 		ifp->if_timer = 5;
528 
529 		/*
530 		 * Init transmit registers, and set transmit start flag.
531 		 */
532 		tmd.tmd1 = LE_T1_OWN | LE_T1_STP | LE_T1_ENP | LE_T1_ONES | (-len & 0xfff);
533 		tmd.tmd2 = 0;
534 		tmd.tmd3 = 0;
535 
536 		(*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd));
537 
538 #ifdef LEDEBUG
539 		if (sc->sc_debug)
540 			am79900_xmit_print(sc, sc->sc_last_td);
541 #endif
542 
543 		(*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA | LE_C0_TDMD);
544 
545 		if (++bix == sc->sc_ntbuf)
546 			bix = 0;
547 
548 		if (++sc->sc_no_td == sc->sc_ntbuf) {
549 			ifp->if_flags |= IFF_OACTIVE;
550 			break;
551 		}
552 
553 	}
554 
555 	sc->sc_last_td = bix;
556 }
557 
558 #ifdef LEDEBUG
559 static void
560 am79900_recv_print(struct lance_softc *sc, int no)
561 {
562 	struct lermd rmd;
563 	uint16_t len;
564 	struct ether_header eh;
565 
566 	(*sc->sc_copyfromdesc)(sc, &rmd, LE_RMDADDR(sc, no), sizeof(rmd));
567 	len = (rmd.rmd2  & 0xfff) - 4;
568 	printf("%s: receive buffer %d, len = %d\n",
569 	    device_xname(sc->sc_dev), no, len);
570 	printf("%s: status %04x\n", device_xname(sc->sc_dev),
571 	    (*sc->sc_rdcsr)(sc, LE_CSR0));
572 	printf("%s: adr %08x, flags/blen %08x\n",
573 	    device_xname(sc->sc_dev), rmd.rmd0, rmd.rmd1);
574 	if (len >= sizeof(eh)) {
575 		(*sc->sc_copyfrombuf)(sc, &eh, LE_RBUFADDR(sc, no), sizeof(eh));
576 		printf("%s: dst %s", device_xname(sc->sc_dev),
577 			ether_sprintf(eh.ether_dhost));
578 		printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost),
579 			ntohs(eh.ether_type));
580 	}
581 }
582 
583 static void
584 am79900_xmit_print(struct lance_softc *sc, int no)
585 {
586 	struct letmd tmd;
587 	uint16_t len;
588 	struct ether_header eh;
589 
590 	(*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, no), sizeof(tmd));
591 	len = -(tmd.tmd1 & 0xfff);
592 	printf("%s: transmit buffer %d, len = %d\n",
593 	    device_xname(sc->sc_dev), no, len);
594 	printf("%s: status %04x\n", device_xname(sc->sc_dev),
595 	    (*sc->sc_rdcsr)(sc, LE_CSR0));
596 	printf("%s: adr %08x, flags/blen %08x\n",
597 	    device_xname(sc->sc_dev), tmd.tmd0, tmd.tmd1);
598 	if (len >= sizeof(eh)) {
599 		(*sc->sc_copyfrombuf)(sc, &eh, LE_TBUFADDR(sc, no), sizeof(eh));
600 		printf("%s: dst %s", device_xname(sc->sc_dev),
601 			ether_sprintf(eh.ether_dhost));
602 		printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost),
603 		    ntohs(eh.ether_type));
604 	}
605 }
606 #endif /* LEDEBUG */
607