1 /* $NetBSD: if_el.c,v 1.102 2022/09/17 17:15:02 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 1994, Matthew E. Kimmel. Permission is hereby granted
5 * to use, copy, modify and distribute this software provided that both
6 * the copyright notice and this permission notice appear in all copies
7 * of the software, derivative works or modified versions, and any
8 * portions thereof.
9 */
10
11 /*
12 * 3COM Etherlink 3C501 device driver
13 */
14
15 /*
16 * Bugs/possible improvements:
17 * - Does not currently support DMA
18 * - Does not currently support multicasts
19 */
20
21 #include <sys/cdefs.h>
22 __KERNEL_RCSID(0, "$NetBSD: if_el.c,v 1.102 2022/09/17 17:15:02 thorpej Exp $");
23
24 #include "opt_inet.h"
25
26 #include <sys/param.h>
27 #include <sys/systm.h>
28 #include <sys/errno.h>
29 #include <sys/ioctl.h>
30 #include <sys/mbuf.h>
31 #include <sys/socket.h>
32 #include <sys/syslog.h>
33 #include <sys/device.h>
34 #include <sys/rndsource.h>
35
36 #include <net/if.h>
37 #include <net/if_dl.h>
38 #include <net/if_types.h>
39 #include <net/bpf.h>
40
41 #include <net/if_ether.h>
42
43 #ifdef INET
44 #include <netinet/in.h>
45 #include <netinet/in_systm.h>
46 #include <netinet/in_var.h>
47 #include <netinet/ip.h>
48 #include <netinet/if_inarp.h>
49 #endif
50
51 #include <sys/cpu.h>
52 #include <sys/intr.h>
53 #include <sys/bus.h>
54
55 #include <dev/isa/isavar.h>
56 #include <dev/isa/if_elreg.h>
57
58 /* for debugging convenience */
59 #ifdef EL_DEBUG
60 #define DPRINTF(x) printf x
61 #else
62 #define DPRINTF(x)
63 #endif
64
65 /*
66 * per-line info and status
67 */
68 struct el_softc {
69 device_t sc_dev;
70 void *sc_ih;
71
72 struct ethercom sc_ethercom; /* ethernet common */
73 bus_space_tag_t sc_iot; /* bus space identifier */
74 bus_space_handle_t sc_ioh; /* i/o handle */
75 bool sc_txbusy; /* transmitter is busy */
76
77 krndsource_t rnd_source;
78 };
79
80 /*
81 * prototypes
82 */
83 static int elintr(void *);
84 static void elinit(struct el_softc *);
85 static int elioctl(struct ifnet *, u_long, void *);
86 static void elstart(struct ifnet *);
87 static void elwatchdog(struct ifnet *);
88 static void elreset(struct el_softc *);
89 static void elstop(struct el_softc *);
90 static int el_xmit(struct el_softc *);
91 static void elread(struct el_softc *, int);
92 static struct mbuf *elget(struct el_softc *sc, int);
93 static inline void el_hardreset(struct el_softc *);
94
95 static int elprobe(device_t, cfdata_t, void *);
96 static void elattach(device_t, device_t, void *);
97
98 CFATTACH_DECL_NEW(el, sizeof(struct el_softc),
99 elprobe, elattach, NULL, NULL);
100
101 /*
102 * Probe routine.
103 *
104 * See if the card is there and at the right place.
105 * (XXX - cgd -- needs help)
106 */
107 static int
elprobe(device_t parent,cfdata_t match,void * aux)108 elprobe(device_t parent, cfdata_t match, void *aux)
109 {
110 struct isa_attach_args *ia = aux;
111 bus_space_tag_t iot = ia->ia_iot;
112 bus_space_handle_t ioh;
113 int iobase;
114 uint8_t station_addr[ETHER_ADDR_LEN];
115 uint8_t i;
116 int rval;
117
118 rval = 0;
119
120 if (ia->ia_nio < 1)
121 return (0);
122 if (ia->ia_nirq < 1)
123 return (0);
124
125 if (ISA_DIRECT_CONFIG(ia))
126 return (0);
127
128 iobase = ia->ia_io[0].ir_addr;
129
130 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
131 return (0);
132 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
133 return (0);
134
135 /* First check the base. */
136 if (iobase < 0x200 || iobase > 0x3f0)
137 return 0;
138
139 /* Map i/o space. */
140 if (bus_space_map(iot, iobase, 16, 0, &ioh))
141 return 0;
142
143 /*
144 * Now attempt to grab the station address from the PROM and see if it
145 * contains the 3com vendor code.
146 */
147 DPRINTF(("Probing 3c501 at 0x%x...\n", iobase));
148
149 /* Reset the board. */
150 DPRINTF(("Resetting board...\n"));
151 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RESET);
152 delay(5);
153 bus_space_write_1(iot, ioh, EL_AC, 0);
154
155 /* Now read the address. */
156 DPRINTF(("Reading station address...\n"));
157 for (i = 0; i < ETHER_ADDR_LEN; i++) {
158 bus_space_write_1(iot, ioh, EL_GPBL, i);
159 station_addr[i] = bus_space_read_1(iot, ioh, EL_EAW);
160 }
161 DPRINTF(("Address is %s\n", ether_sprintf(station_addr)));
162
163 /*
164 * If the vendor code is ok, return a 1. We'll assume that whoever
165 * configured this system is right about the IRQ.
166 */
167 if (station_addr[0] != 0x02 || station_addr[1] != 0x60 ||
168 station_addr[2] != 0x8c) {
169 DPRINTF(("Bad vendor code.\n"));
170 goto out;
171 }
172 DPRINTF(("Vendor code ok.\n"));
173
174 ia->ia_nio = 1;
175 ia->ia_io[0].ir_size = 16;
176
177 ia->ia_nirq = 1;
178
179 ia->ia_niomem = 0;
180 ia->ia_ndrq = 0;
181
182 rval = 1;
183
184 out:
185 bus_space_unmap(iot, ioh, 16);
186 return rval;
187 }
188
189 /*
190 * Attach the interface to the kernel data structures. By the time this is
191 * called, we know that the card exists at the given I/O address. We still
192 * assume that the IRQ given is correct.
193 */
194 static void
elattach(device_t parent,device_t self,void * aux)195 elattach(device_t parent, device_t self, void *aux)
196 {
197 struct el_softc *sc = device_private(self);
198 struct isa_attach_args *ia = aux;
199 bus_space_tag_t iot = ia->ia_iot;
200 bus_space_handle_t ioh;
201 struct ifnet *ifp = &sc->sc_ethercom.ec_if;
202 uint8_t myaddr[ETHER_ADDR_LEN];
203 uint8_t i;
204
205 sc->sc_dev = self;
206
207 printf("\n");
208
209 DPRINTF(("Attaching %s...\n", device_xname(sc->sc_dev)));
210
211 /* Map i/o space. */
212 if (bus_space_map(iot, ia->ia_io[0].ir_addr, 16, 0, &ioh)) {
213 aprint_error_dev(self, "can't map i/o space\n");
214 return;
215 }
216
217 sc->sc_iot = iot;
218 sc->sc_ioh = ioh;
219
220 /* Reset the board. */
221 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RESET);
222 delay(5);
223 bus_space_write_1(iot, ioh, EL_AC, 0);
224
225 /* Now read the address. */
226 for (i = 0; i < ETHER_ADDR_LEN; i++) {
227 bus_space_write_1(iot, ioh, EL_GPBL, i);
228 myaddr[i] = bus_space_read_1(iot, ioh, EL_EAW);
229 }
230
231 /* Stop the board. */
232 elstop(sc);
233
234 /* Initialize ifnet structure. */
235 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ);
236 ifp->if_softc = sc;
237 ifp->if_start = elstart;
238 ifp->if_ioctl = elioctl;
239 ifp->if_watchdog = elwatchdog;
240 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX;
241 IFQ_SET_READY(&ifp->if_snd);
242
243 /* Now we can attach the interface. */
244 DPRINTF(("Attaching interface...\n"));
245 if_attach(ifp);
246 ether_ifattach(ifp, myaddr);
247
248 /* Print out some information for the user. */
249 printf("%s: address %s\n", device_xname(self), ether_sprintf(myaddr));
250
251 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
252 IST_EDGE, IPL_NET, elintr, sc);
253
254 DPRINTF(("Attaching to random...\n"));
255 rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev),
256 RND_TYPE_NET, RND_FLAG_DEFAULT);
257
258 DPRINTF(("elattach() finished.\n"));
259 }
260
261 /*
262 * Reset interface.
263 */
264 static void
elreset(struct el_softc * sc)265 elreset(struct el_softc *sc)
266 {
267 int s;
268
269 DPRINTF(("elreset()\n"));
270 s = splnet();
271 elstop(sc);
272 elinit(sc);
273 splx(s);
274 }
275
276 /*
277 * Stop interface.
278 */
279 static void
elstop(struct el_softc * sc)280 elstop(struct el_softc *sc)
281 {
282
283 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EL_AC, 0);
284 }
285
286 /*
287 * Do a hardware reset of the board, and upload the ethernet address again in
288 * case the board forgets.
289 */
290 static inline void
el_hardreset(struct el_softc * sc)291 el_hardreset(struct el_softc *sc)
292 {
293 bus_space_tag_t iot = sc->sc_iot;
294 bus_space_handle_t ioh = sc->sc_ioh;
295 int i;
296
297 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RESET);
298 delay(5);
299 bus_space_write_1(iot, ioh, EL_AC, 0);
300
301 for (i = 0; i < ETHER_ADDR_LEN; i++)
302 bus_space_write_1(iot, ioh, i,
303 CLLADDR(sc->sc_ethercom.ec_if.if_sadl)[i]);
304 }
305
306 /*
307 * Initialize interface.
308 */
309 static void
elinit(struct el_softc * sc)310 elinit(struct el_softc *sc)
311 {
312 struct ifnet *ifp = &sc->sc_ethercom.ec_if;
313 bus_space_tag_t iot = sc->sc_iot;
314 bus_space_handle_t ioh = sc->sc_ioh;
315
316 /* First, reset the board. */
317 el_hardreset(sc);
318
319 /* Configure rx. */
320 DPRINTF(("Configuring rx...\n"));
321 if (ifp->if_flags & IFF_PROMISC)
322 bus_space_write_1(iot, ioh, EL_RXC,
323 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB |
324 EL_RXC_DOFLOW | EL_RXC_PROMISC);
325 else
326 bus_space_write_1(iot, ioh, EL_RXC,
327 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB |
328 EL_RXC_DOFLOW | EL_RXC_ABROAD);
329 bus_space_write_1(iot, ioh, EL_RBC, 0);
330
331 /* Configure TX. */
332 DPRINTF(("Configuring tx...\n"));
333 bus_space_write_1(iot, ioh, EL_TXC, 0);
334
335 /* Start reception. */
336 DPRINTF(("Starting reception...\n"));
337 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX);
338
339 /* Set flags appropriately. */
340 ifp->if_flags |= IFF_RUNNING;
341 sc->sc_txbusy = false;
342
343 /* And start output. */
344 elstart(ifp);
345 }
346
347 /*
348 * Start output on interface. Get datagrams from the queue and output them,
349 * giving the receiver a chance between datagrams. Call only from splnet or
350 * interrupt level!
351 */
352 static void
elstart(struct ifnet * ifp)353 elstart(struct ifnet *ifp)
354 {
355 struct el_softc *sc = ifp->if_softc;
356 bus_space_tag_t iot = sc->sc_iot;
357 bus_space_handle_t ioh = sc->sc_ioh;
358 struct mbuf *m, *m0;
359 int s, i, off, retries;
360
361 DPRINTF(("elstart()...\n"));
362 s = splnet();
363
364 /* Don't do anything if output is active. */
365 if (sc->sc_txbusy) {
366 splx(s);
367 return;
368 }
369
370 sc->sc_txbusy = true;
371
372 /*
373 * The main loop. They warned me against endless loops, but would I
374 * listen? NOOO....
375 */
376 for (;;) {
377 /* Dequeue the next datagram. */
378 IFQ_DEQUEUE(&ifp->if_snd, m0);
379
380 /* If there's nothing to send, return. */
381 if (m0 == 0)
382 break;
383
384 /* Give the packet to the bpf, if any. */
385 bpf_mtap(ifp, m0, BPF_D_OUT);
386
387 /* Disable the receiver. */
388 bus_space_write_1(iot, ioh, EL_AC, EL_AC_HOST);
389 bus_space_write_1(iot, ioh, EL_RBC, 0);
390
391 /* Transfer datagram to board. */
392 DPRINTF(("el: xfr pkt length=%d...\n", m0->m_pkthdr.len));
393 off = EL_BUFSIZ - uimax(m0->m_pkthdr.len,
394 ETHER_MIN_LEN - ETHER_CRC_LEN);
395 #ifdef DIAGNOSTIC
396 if ((off & 0xffff) != off)
397 printf("%s: bogus off 0x%x\n",
398 device_xname(sc->sc_dev), off);
399 #endif
400 bus_space_write_1(iot, ioh, EL_GPBL, off & 0xff);
401 bus_space_write_1(iot, ioh, EL_GPBH, (off >> 8) & 0xff);
402
403 /* Copy the datagram to the buffer. */
404 for (m = m0; m != 0; m = m->m_next)
405 bus_space_write_multi_1(iot, ioh, EL_BUF,
406 mtod(m, uint8_t *), m->m_len);
407 for (i = 0;
408 i < ETHER_MIN_LEN - ETHER_CRC_LEN - m0->m_pkthdr.len; i++)
409 bus_space_write_1(iot, ioh, EL_BUF, 0);
410
411 m_freem(m0);
412
413 /* Now transmit the datagram. */
414 retries = 0;
415 for (;;) {
416 bus_space_write_1(iot, ioh, EL_GPBL, off & 0xff);
417 bus_space_write_1(iot, ioh, EL_GPBH, (off >> 8) & 0xff);
418 if (el_xmit(sc)) {
419 if_statinc(ifp, if_oerrors);
420 break;
421 }
422 /* Check out status. */
423 i = bus_space_read_1(iot, ioh, EL_TXS);
424 DPRINTF(("tx status=0x%x\n", i));
425 if ((i & EL_TXS_READY) == 0) {
426 DPRINTF(("el: err txs=%x\n", i));
427 if (i & (EL_TXS_COLL | EL_TXS_COLL16)) {
428 if_statinc(ifp, if_collisions);
429 if ((i & EL_TXC_DCOLL16) == 0 &&
430 retries < 15) {
431 retries++;
432 bus_space_write_1(iot, ioh,
433 EL_AC, EL_AC_HOST);
434 }
435 } else {
436 if_statinc(ifp, if_oerrors);
437 break;
438 }
439 } else {
440 if_statinc(ifp, if_opackets);
441 break;
442 }
443 }
444
445 /*
446 * Now give the card a chance to receive.
447 * Gotta love 3c501s...
448 */
449 (void)bus_space_read_1(iot, ioh, EL_AS);
450 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX);
451 splx(s);
452 /* (Maybe) interrupt here. */
453 s = splnet();
454 }
455
456 (void)bus_space_read_1(iot, ioh, EL_AS);
457 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX);
458 sc->sc_txbusy = false;
459 splx(s);
460 }
461
462 /*
463 * This function actually attempts to transmit a datagram downloaded to the
464 * board. Call at splnet or interrupt, after downloading data! Returns 0 on
465 * success, non-0 on failure.
466 */
467 static int
el_xmit(struct el_softc * sc)468 el_xmit(struct el_softc *sc)
469 {
470 bus_space_tag_t iot = sc->sc_iot;
471 bus_space_handle_t ioh = sc->sc_ioh;
472 int i;
473
474 /*
475 * XXX
476 * This busy-waits for the tx completion. Can we get an interrupt
477 * instead?
478 */
479
480 DPRINTF(("el: xmit..."));
481 bus_space_write_1(iot, ioh, EL_AC, EL_AC_TXFRX);
482 i = 20000;
483 while ((bus_space_read_1(iot, ioh, EL_AS) & EL_AS_TXBUSY) && (i > 0))
484 i--;
485 if (i == 0) {
486 DPRINTF(("tx not ready\n"));
487 return -1;
488 }
489 DPRINTF(("%d cycles.\n", 20000 - i));
490 return 0;
491 }
492
493 /*
494 * Controller interrupt.
495 */
496 static int
elintr(void * arg)497 elintr(void *arg)
498 {
499 struct el_softc *sc = arg;
500 bus_space_tag_t iot = sc->sc_iot;
501 bus_space_handle_t ioh = sc->sc_ioh;
502 uint8_t rxstat;
503 int len;
504
505 DPRINTF(("elintr: "));
506
507 /* Check board status. */
508 if ((bus_space_read_1(iot, ioh, EL_AS) & EL_AS_RXBUSY) != 0) {
509 (void)bus_space_read_1(iot, ioh, EL_RXC);
510 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX);
511 return 0;
512 }
513
514 for (;;) {
515 rxstat = bus_space_read_1(iot, ioh, EL_RXS);
516 if (rxstat & EL_RXS_STALE)
517 break;
518
519 /* If there's an overflow, reinit the board. */
520 if ((rxstat & EL_RXS_NOFLOW) == 0) {
521 DPRINTF(("overflow.\n"));
522 el_hardreset(sc);
523 /* Put board back into receive mode. */
524 if (sc->sc_ethercom.ec_if.if_flags & IFF_PROMISC)
525 bus_space_write_1(iot, ioh, EL_RXC,
526 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB |
527 EL_RXC_DOFLOW | EL_RXC_PROMISC);
528 else
529 bus_space_write_1(iot, ioh, EL_RXC,
530 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB |
531 EL_RXC_DOFLOW | EL_RXC_ABROAD);
532 (void)bus_space_read_1(iot, ioh, EL_AS);
533 bus_space_write_1(iot, ioh, EL_RBC, 0);
534 break;
535 }
536
537 /* Incoming packet. */
538 len = bus_space_read_1(iot, ioh, EL_RBL);
539 len |= bus_space_read_1(iot, ioh, EL_RBH) << 8;
540 DPRINTF(("receive len=%d rxstat=%x ", len, rxstat));
541 bus_space_write_1(iot, ioh, EL_AC, EL_AC_HOST);
542
543 /* Pass data up to upper levels. */
544 elread(sc, len);
545
546 /* Is there another packet? */
547 if ((bus_space_read_1(iot, ioh, EL_AS) & EL_AS_RXBUSY) != 0)
548 break;
549
550 rnd_add_uint32(&sc->rnd_source, rxstat);
551
552 DPRINTF(("<rescan> "));
553 }
554
555 (void)bus_space_read_1(iot, ioh, EL_RXC);
556 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX);
557 return 1;
558 }
559
560 /*
561 * Pass a packet to the higher levels.
562 */
563 static void
elread(struct el_softc * sc,int len)564 elread(struct el_softc *sc, int len)
565 {
566 struct ifnet *ifp = &sc->sc_ethercom.ec_if;
567 struct mbuf *m;
568
569 if (len <= sizeof(struct ether_header) ||
570 len > ETHER_MAX_LEN) {
571 printf("%s: invalid packet size %d; dropping\n",
572 device_xname(sc->sc_dev), len);
573 if_statinc(ifp, if_ierrors);
574 return;
575 }
576
577 /* Pull packet off interface. */
578 m = elget(sc, len);
579 if (m == 0) {
580 if_statinc(ifp, if_ierrors);
581 return;
582 }
583
584 if_percpuq_enqueue(ifp->if_percpuq, m);
585 }
586
587 /*
588 * Pull read data off a interface. Len is length of data, with local net
589 * header stripped. We copy the data into mbufs. When full cluster sized
590 * units are present we copy into clusters.
591 */
592 static struct mbuf *
elget(struct el_softc * sc,int totlen)593 elget(struct el_softc *sc, int totlen)
594 {
595 struct ifnet *ifp = &sc->sc_ethercom.ec_if;
596 bus_space_tag_t iot = sc->sc_iot;
597 bus_space_handle_t ioh = sc->sc_ioh;
598 struct mbuf *m, *m0, *newm;
599 int len;
600
601 MGETHDR(m0, M_DONTWAIT, MT_DATA);
602 if (m0 == 0)
603 return (0);
604 m_set_rcvif(m0, ifp);
605 m0->m_pkthdr.len = totlen;
606 len = MHLEN;
607 m = m0;
608
609 bus_space_write_1(iot, ioh, EL_GPBL, 0);
610 bus_space_write_1(iot, ioh, EL_GPBH, 0);
611
612 while (totlen > 0) {
613 if (totlen >= MINCLSIZE) {
614 MCLGET(m, M_DONTWAIT);
615 if ((m->m_flags & M_EXT) == 0)
616 goto bad;
617 len = MCLBYTES;
618 }
619
620 m->m_len = len = uimin(totlen, len);
621 bus_space_read_multi_1(iot, ioh, EL_BUF, mtod(m, uint8_t *), len);
622
623 totlen -= len;
624 if (totlen > 0) {
625 MGET(newm, M_DONTWAIT, MT_DATA);
626 if (newm == 0)
627 goto bad;
628 len = MLEN;
629 m = m->m_next = newm;
630 }
631 }
632
633 bus_space_write_1(iot, ioh, EL_RBC, 0);
634 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RX);
635
636 return (m0);
637
638 bad:
639 m_freem(m0);
640 return (0);
641 }
642
643 /*
644 * Process an ioctl request. This code needs some work - it looks pretty ugly.
645 */
646 static int
elioctl(struct ifnet * ifp,u_long cmd,void * data)647 elioctl(struct ifnet *ifp, u_long cmd, void *data)
648 {
649 struct el_softc *sc = ifp->if_softc;
650 struct ifaddr *ifa = (struct ifaddr *)data;
651 int s, error = 0;
652
653 s = splnet();
654
655 switch (cmd) {
656
657 case SIOCINITIFADDR:
658 ifp->if_flags |= IFF_UP;
659
660 elinit(sc);
661 switch (ifa->ifa_addr->sa_family) {
662 #ifdef INET
663 case AF_INET:
664 arp_ifinit(ifp, ifa);
665 break;
666 #endif
667 default:
668 break;
669 }
670 break;
671
672 case SIOCSIFFLAGS:
673 if ((error = ifioctl_common(ifp, cmd, data)) != 0)
674 break;
675 /* XXX re-use ether_ioctl() */
676 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) {
677 case IFF_RUNNING:
678 /*
679 * If interface is marked down and it is running, then
680 * stop it.
681 */
682 elstop(sc);
683 ifp->if_flags &= ~IFF_RUNNING;
684 break;
685 case IFF_UP:
686 /*
687 * If interface is marked up and it is stopped, then
688 * start it.
689 */
690 elinit(sc);
691 break;
692 default:
693 /*
694 * Some other important flag might have changed, so
695 * reset.
696 */
697 elreset(sc);
698 break;
699 }
700 break;
701
702 default:
703 error = ether_ioctl(ifp, cmd, data);
704 break;
705 }
706
707 splx(s);
708 return error;
709 }
710
711 /*
712 * Device timeout routine.
713 */
714 static void
elwatchdog(struct ifnet * ifp)715 elwatchdog(struct ifnet *ifp)
716 {
717 struct el_softc *sc = ifp->if_softc;
718
719 log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev));
720 if_statinc(ifp, if_oerrors);
721
722 elreset(sc);
723 }
724