1 /* $FreeBSD: src/sys/dev/snc/dp83932.c,v 1.1.2.2 2003/02/11 08:52:00 nyan Exp $ */
2 /* $DragonFly: src/sys/dev/netif/snc/Attic/dp83932.c,v 1.8 2004/03/23 22:19:03 hsu Exp $ */
3 /* $NecBSD: dp83932.c,v 1.5 1999/07/29 05:08:44 kmatsuda Exp $ */
4 /* $NetBSD: if_snc.c,v 1.18 1998/04/25 21:27:40 scottr Exp $ */
7 * Copyright (c) 1997, 1998, 1999
8 * Kouichi Matsuda. All rights reserved.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by Kouichi Matsuda for
22 * 4. The name of the author may not be used to endorse or promote products
23 * derived from this software without specific prior written permission
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 * Modified for FreeBSD(98) 4.0 from NetBSD/pc98 1.4.2 by Motomichi Matsuzaki.
42 * Modified for NetBSD/pc98 1.2G from NetBSD/mac68k 1.2G by Kouichi Matsuda.
43 * Make adapted for NEC PC-9801-83, 84, PC-9801-103, 104, PC-9801N-25 and
44 * PC-9801N-J02, J02R, which uses National Semiconductor DP83934AVQB as
45 * Ethernet Controller and National Semiconductor NS46C46 as
46 * (64 * 16 bits) Microwire Serial EEPROM.
50 * National Semiconductor DP8393X SONIC Driver
51 * Copyright (c) 1991 Algorithmics Ltd (http://www.algor.co.uk)
52 * You may use, copy, and modify this program so long as you retain the
55 * This driver has been substantially modified since Algorithmics donated
58 * Denton Gentry <denny1@home.com>
60 * Yanagisawa Takeshi <yanagisw@aa.ap.titech.ac.jp>
61 * did the work to get this running on the Macintosh.
66 #include <sys/param.h>
67 #include <sys/systm.h>
68 #include <sys/sockio.h>
70 #include <sys/protosw.h>
71 #include <sys/socket.h>
72 #include <sys/syslog.h>
73 #include <sys/errno.h>
78 #include <net/ethernet.h>
80 #include <net/if_arp.h>
81 #include <net/if_dl.h>
82 #include <net/if_types.h>
83 #include <net/if_media.h>
86 #include <netinet/in.h>
87 #include <netinet/in_systm.h>
88 #include <netinet/in_var.h>
89 #include <netinet/ip.h>
93 #include <net/bpfdesc.h>
96 #include <machine/bus.h>
97 #include "dp83932reg.h"
98 #include "dp83932var.h"
100 hide void sncwatchdog (struct ifnet *);
101 hide void sncinit (void *);
102 hide int sncstop (struct snc_softc *sc);
103 hide int sncioctl (struct ifnet *ifp, u_long cmd, caddr_t data,
105 hide void sncstart (struct ifnet *ifp);
106 hide void sncreset (struct snc_softc *sc);
108 hide void caminitialise (struct snc_softc *);
109 hide void camentry (struct snc_softc *, int, u_char *ea);
110 hide void camprogram (struct snc_softc *);
111 hide void initialise_tda (struct snc_softc *);
112 hide void initialise_rda (struct snc_softc *);
113 hide void initialise_rra (struct snc_softc *);
115 hide void camdump (struct snc_softc *sc);
118 hide void sonictxint (struct snc_softc *);
119 hide void sonicrxint (struct snc_softc *);
121 hide u_int sonicput (struct snc_softc *sc, struct mbuf *m0,
123 hide int sonic_read (struct snc_softc *, u_int32_t, int);
124 hide struct mbuf *sonic_get (struct snc_softc *,
127 int snc_enable (struct snc_softc *);
128 void snc_disable (struct snc_softc *);
130 int snc_mediachange (struct ifnet *);
131 void snc_mediastatus (struct ifnet *, struct ifmediareq *);
135 struct cfdriver snc_cd = {
136 NULL, "snc", DV_IFNET
145 #define assert(e) ((void)0)
146 #define _assert(e) ((void)0)
148 #define _assert(e) assert(e)
150 #define assert(e) ((e) ? (void)0 : __assert("snc ", __FILE__, __LINE__, #e))
152 #define assert(e) ((e) ? (void)0 : __assert("snc "__FILE__, __LINE__, "e"))
157 #define SNC_SHOWTXHDR 0x01 /* show tx ether_header */
158 #define SNC_SHOWRXHDR 0x02 /* show rx ether_header */
159 #define SNC_SHOWCAMENT 0x04 /* show CAM entry */
160 #endif /* SNCDEBUG */
165 sncconfig(sc, media, nmedia, defmedia, eaddr)
166 struct snc_softc *sc;
167 int *media, nmedia, defmedia;
170 struct ifnet *ifp = &sc->sc_if;
174 if ((sncdebug & SNC_SHOWCAMENT) != 0) {
178 device_printf(sc->sc_dev, "address %6D\n", eaddr, ":");
181 device_printf(sc->sc_dev,
182 "buffers: rra=0x%x cda=0x%x rda=0x%x tda=0x%x\n",
183 sc->v_rra[0], sc->v_cda,
184 sc->v_rda, sc->mtda[0].mtd_vtxp);
188 if_initname(ifp, "snc", device_get_unit(sc->sc_dev));
189 ifp->if_ioctl = sncioctl;
190 ifp->if_output = ether_output;
191 ifp->if_start = sncstart;
193 IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
194 ifp->if_watchdog = sncwatchdog;
195 ifp->if_init = sncinit;
196 ifp->if_mtu = ETHERMTU;
197 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
199 /* Initialize media goo. */
200 ifmedia_init(&sc->sc_media, 0, snc_mediachange,
203 for (i = 0; i < nmedia; i++)
204 ifmedia_add(&sc->sc_media, media[i], 0, NULL);
205 ifmedia_set(&sc->sc_media, defmedia);
207 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL);
208 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL);
211 ether_ifattach(ifp, eaddr);
214 rnd_attach_source(&sc->rnd_source, device_get_nameunit(sc->sc_dev),
224 sncstop((struct snc_softc *)arg);
228 * Media change callback.
234 struct snc_softc *sc = ifp->if_softc;
236 if (sc->sc_mediachange)
237 return ((*sc->sc_mediachange)(sc));
242 * Media status callback.
245 snc_mediastatus(ifp, ifmr)
247 struct ifmediareq *ifmr;
249 struct snc_softc *sc = ifp->if_softc;
251 if (sc->sc_enabled == 0) {
252 ifmr->ifm_active = IFM_ETHER | IFM_NONE;
253 ifmr->ifm_status = 0;
257 if (sc->sc_mediastatus)
258 (*sc->sc_mediastatus)(sc, ifmr);
263 sncioctl(ifp, cmd, data, cr)
270 struct snc_softc *sc = ifp->if_softc;
271 int s = splhardnet(), err = 0;
279 err = ether_ioctl(ifp, cmd, data);
283 if ((ifp->if_flags & IFF_UP) == 0 &&
284 (ifp->if_flags & IFF_RUNNING) != 0) {
286 * If interface is marked down and it is running,
290 ifp->if_flags &= ~IFF_RUNNING;
292 } else if ((ifp->if_flags & IFF_UP) != 0 &&
293 (ifp->if_flags & IFF_RUNNING) == 0) {
295 * If interface is marked up and it is stopped,
298 if ((err = snc_enable(sc)) != 0)
301 } else if (sc->sc_enabled) {
303 * reset the interface to pick up any other changes
306 temp = ifp->if_flags & IFF_UP;
308 ifp->if_flags |= temp;
315 if (sc->sc_enabled == 0) {
319 temp = ifp->if_flags & IFF_UP;
321 ifp->if_flags |= temp;
326 ifr = (struct ifreq *) data;
327 err = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd);
337 * Encapsulate a packet of type family for the local net.
343 struct snc_softc *sc = ifp->if_softc;
347 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
351 /* Check for room in the xmit buffer. */
352 if ((mtd_next = (sc->mtd_free + 1)) == NTDA)
355 if (mtd_next == sc->mtd_hw) {
356 ifp->if_flags |= IFF_OACTIVE;
360 IF_DEQUEUE(&ifp->if_snd, m);
364 /* We need the header for m_pkthdr.len. */
365 if ((m->m_flags & M_PKTHDR) == 0)
366 panic("%s: sncstart: no header mbuf",
367 device_get_nameunit(sc->sc_dev));
370 * If bpf is listening on this interface, let it
371 * see the packet before we commit it to the wire.
377 * If there is nothing in the o/p queue, and there is room in
378 * the Tx ring, then send the packet directly. Otherwise append
379 * it to the o/p queue.
381 if ((sonicput(sc, m, mtd_next)) == 0) {
382 IF_PREPEND(&ifp->if_snd, m);
386 sc->mtd_prev = sc->mtd_free;
387 sc->mtd_free = mtd_next;
389 ifp->if_opackets++; /* # of pkts */
391 /* Jump back for possibly more punishment. */
396 * reset and restart the SONIC. Called in case of fatal
397 * hardware/software errors.
401 struct snc_softc *sc;
411 struct snc_softc *sc = xsc;
415 if (sc->sc_if.if_flags & IFF_RUNNING)
416 /* already running */
421 NIC_PUT(sc, SNCR_CR, CR_RST); /* DCR only accessable in reset mode! */
424 NIC_PUT(sc, SNCR_DCR, (sc->sncr_dcr |
425 (sc->bitmode ? DCR_DW32 : DCR_DW16)));
426 NIC_PUT(sc, SNCR_DCR2, sc->sncr_dcr2);
428 s_rcr = RCR_BRD | RCR_LBNONE;
429 if (sc->sc_if.if_flags & IFF_PROMISC)
431 if (sc->sc_if.if_flags & IFF_ALLMULTI)
433 NIC_PUT(sc, SNCR_RCR, s_rcr);
435 NIC_PUT(sc, SNCR_IMR, (IMR_PRXEN | IMR_PTXEN | IMR_TXEREN | IMR_LCDEN));
437 /* clear pending interrupts */
438 NIC_PUT(sc, SNCR_ISR, ISR_ALL);
440 /* clear tally counters */
441 NIC_PUT(sc, SNCR_CRCT, -1);
442 NIC_PUT(sc, SNCR_FAET, -1);
443 NIC_PUT(sc, SNCR_MPT, -1);
449 /* enable the chip */
450 NIC_PUT(sc, SNCR_CR, 0);
453 /* program the CAM */
456 /* get it to read resource descriptors */
457 NIC_PUT(sc, SNCR_CR, CR_RRRA);
459 while ((NIC_GET(sc, SNCR_CR)) & CR_RRRA)
463 NIC_PUT(sc, SNCR_CR, CR_RXEN);
466 /* flag interface as "running" */
467 sc->sc_if.if_flags |= IFF_RUNNING;
468 sc->sc_if.if_flags &= ~IFF_OACTIVE;
475 * close down an interface and free its buffers
476 * Called on final close of device, or if sncinit() fails
481 struct snc_softc *sc;
484 int s = splhardnet();
486 /* stick chip in reset */
487 NIC_PUT(sc, SNCR_CR, CR_RST);
490 /* free all receive buffers (currently static so nothing to do) */
492 /* free all pending transmit mbufs */
493 while (sc->mtd_hw != sc->mtd_free) {
494 mtd = &sc->mtda[sc->mtd_hw];
496 m_freem(mtd->mtd_mbuf);
497 if (++sc->mtd_hw == NTDA) sc->mtd_hw = 0;
500 sc->sc_if.if_timer = 0;
501 sc->sc_if.if_flags &= ~(IFF_RUNNING | IFF_UP);
508 * Called if any Tx packets remain unsent after 5 seconds,
509 * In all cases we just reset the chip, and any retransmission
510 * will be handled by higher level protocol timeouts.
516 struct snc_softc *sc = ifp->if_softc;
520 if (sc->mtd_hw != sc->mtd_free) {
521 /* something still pending for transmit */
522 mtd = &sc->mtda[sc->mtd_hw];
523 if (SRO(sc, mtd->mtd_vtxp, TXP_STATUS) == 0)
524 log(LOG_ERR, "%s: Tx - timeout\n",
525 device_get_nameunit(sc->sc_dev));
527 log(LOG_ERR, "%s: Tx - lost interrupt\n",
528 device_get_nameunit(sc->sc_dev));
529 temp = ifp->if_flags & IFF_UP;
531 ifp->if_flags |= temp;
536 * stuff packet into sonic (at splnet)
539 sonicput(sc, m0, mtd_next)
540 struct snc_softc *sc;
551 #ifdef whyonearthwouldyoudothis
552 if (NIC_GET(sc, SNCR_CR) & CR_TXP)
556 /* grab the replacement mtd */
557 mtdp = &sc->mtda[sc->mtd_free];
559 buff = mtdp->mtd_vbuf;
561 /* this packet goes to mtdnext fill in the TDA */
563 txp = mtdp->mtd_vtxp;
565 /* Write to the config word. Every (NTDA/2)+1 packets we set an intr */
566 if (sc->mtd_pint == 0) {
567 sc->mtd_pint = NTDA/2;
568 SWO(sc, txp, TXP_CONFIG, TCR_PINT);
571 SWO(sc, txp, TXP_CONFIG, 0);
574 for (m = m0; m; m = m->m_next) {
577 (*sc->sc_copytobuf)(sc, mtod(m, caddr_t), buff, len);
580 if (totlen >= TXBSIZE) {
581 panic("%s: sonicput: packet overflow",
582 device_get_nameunit(sc->sc_dev));
585 SWO(sc, txp, TXP_FRAGOFF + (0 * TXP_FRAGSIZE) + TXP_FPTRLO,
586 LOWER(mtdp->mtd_vbuf));
587 SWO(sc, txp, TXP_FRAGOFF + (0 * TXP_FRAGSIZE) + TXP_FPTRHI,
588 UPPER(mtdp->mtd_vbuf));
590 if (totlen < ETHERMIN + sizeof(struct ether_header)) {
591 int pad = ETHERMIN + sizeof(struct ether_header) - totlen;
592 (*sc->sc_zerobuf)(sc, mtdp->mtd_vbuf + totlen, pad);
593 totlen = ETHERMIN + sizeof(struct ether_header);
596 SWO(sc, txp, TXP_FRAGOFF + (0 * TXP_FRAGSIZE) + TXP_FSIZE,
598 SWO(sc, txp, TXP_FRAGCNT, 1);
599 SWO(sc, txp, TXP_PKTSIZE, totlen);
601 /* link onto the next mtd that will be used */
602 SWO(sc, txp, TXP_FRAGOFF + (1 * TXP_FRAGSIZE) + TXP_FPTRLO,
603 LOWER(sc->mtda[mtd_next].mtd_vtxp) | EOL);
606 * The previous txp.tlink currently contains a pointer to
607 * our txp | EOL. Want to clear the EOL, so write our
608 * pointer to the previous txp.
610 SWO(sc, sc->mtda[sc->mtd_prev].mtd_vtxp, sc->mtd_tlinko,
611 LOWER(mtdp->mtd_vtxp));
613 /* make sure chip is running */
615 NIC_PUT(sc, SNCR_CR, CR_TXP);
617 sc->sc_if.if_timer = 5; /* 5 seconds to watch for failing to transmit */
623 * These are called from sonicioctl() when /etc/ifconfig is run to set
624 * the address or switch the i/f on.
631 struct snc_softc *sc;
633 u_int32_t v_cda = sc->v_cda;
637 for (i = 0; i < MAXCAM; i++) {
638 camoffset = i * CDA_CAMDESC;
639 SWO(sc, v_cda, (camoffset + CDA_CAMEP), i);
640 SWO(sc, v_cda, (camoffset + CDA_CAMAP2), 0);
641 SWO(sc, v_cda, (camoffset + CDA_CAMAP1), 0);
642 SWO(sc, v_cda, (camoffset + CDA_CAMAP0), 0);
644 SWO(sc, v_cda, CDA_ENABLE, 0);
647 if ((sncdebug & SNC_SHOWCAMENT) != 0) {
654 camentry(sc, entry, ea)
657 struct snc_softc *sc;
659 u_int32_t v_cda = sc->v_cda;
660 int camoffset = entry * CDA_CAMDESC;
662 SWO(sc, v_cda, camoffset + CDA_CAMEP, entry);
663 SWO(sc, v_cda, camoffset + CDA_CAMAP2, (ea[5] << 8) | ea[4]);
664 SWO(sc, v_cda, camoffset + CDA_CAMAP1, (ea[3] << 8) | ea[2]);
665 SWO(sc, v_cda, camoffset + CDA_CAMAP0, (ea[1] << 8) | ea[0]);
666 SWO(sc, v_cda, CDA_ENABLE,
667 (SRO(sc, v_cda, CDA_ENABLE) | (1 << entry)));
672 struct snc_softc *sc;
674 struct ifmultiaddr *ifma;
683 /* Always load our own address first. */
684 camentry (sc, mcount, sc->sc_ethercom.ac_enaddr);
687 /* Assume we won't need allmulti bit. */
688 ifp->if_flags &= ~IFF_ALLMULTI;
690 /* Loop through multicast addresses */
691 for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
692 ifma = ifma->ifma_link.le_next) {
693 if (ifma->ifma_addr->sa_family != AF_LINK)
695 if (mcount == MAXCAM) {
696 ifp->if_flags |= IFF_ALLMULTI;
700 /* program the CAM with the specified entry */
702 LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
706 NIC_PUT(sc, SNCR_CDP, LOWER(sc->v_cda));
707 NIC_PUT(sc, SNCR_CDC, MAXCAM);
708 NIC_PUT(sc, SNCR_CR, CR_LCAM);
712 while ((NIC_GET(sc, SNCR_CR) & CR_LCAM) && timeout--)
716 panic("%s: CAM initialisation failed\n",
717 device_get_nameunit(sc->sc_dev));
720 while (((NIC_GET(sc, SNCR_ISR) & ISR_LCD) == 0) && timeout--)
723 if (NIC_GET(sc, SNCR_ISR) & ISR_LCD)
724 NIC_PUT(sc, SNCR_ISR, ISR_LCD);
726 device_printf(sc->sc_dev,
727 "CAM initialisation without interrupt\n");
733 struct snc_softc *sc;
737 printf("CAM entries:\n");
738 NIC_PUT(sc, SNCR_CR, CR_RST);
741 for (i = 0; i < 16; i++) {
742 ushort ap2, ap1, ap0;
743 NIC_PUT(sc, SNCR_CEP, i);
745 ap2 = NIC_GET(sc, SNCR_CAP2);
746 ap1 = NIC_GET(sc, SNCR_CAP1);
747 ap0 = NIC_GET(sc, SNCR_CAP0);
748 printf("%d: ap2=0x%x ap1=0x%x ap0=0x%x\n", i, ap2, ap1, ap0);
750 printf("CAM enable 0x%x\n", NIC_GET(sc, SNCR_CEP));
752 NIC_PUT(sc, SNCR_CR, 0);
759 struct snc_softc *sc;
764 for (i = 0; i < NTDA; i++) {
770 sc->mtd_prev = NTDA - 1;
772 sc->mtd_tlinko = TXP_FRAGOFF + 1*TXP_FRAGSIZE + TXP_FPTRLO;
773 sc->mtd_pint = NTDA/2;
775 NIC_PUT(sc, SNCR_UTDA, UPPER(sc->mtda[0].mtd_vtxp));
776 NIC_PUT(sc, SNCR_CTDA, LOWER(sc->mtda[0].mtd_vtxp));
781 struct snc_softc *sc;
784 u_int32_t vv_rda = 0;
787 /* link the RDA's together into a circular list */
788 for (i = 0; i < (sc->sc_nrda - 1); i++) {
789 v_rda = sc->v_rda + (i * RXPKT_SIZE(sc));
790 vv_rda = sc->v_rda + ((i+1) * RXPKT_SIZE(sc));
791 SWO(sc, v_rda, RXPKT_RLINK, LOWER(vv_rda));
792 SWO(sc, v_rda, RXPKT_INUSE, 1);
794 v_rda = sc->v_rda + ((sc->sc_nrda - 1) * RXPKT_SIZE(sc));
795 SWO(sc, v_rda, RXPKT_RLINK, LOWER(sc->v_rda) | EOL);
796 SWO(sc, v_rda, RXPKT_INUSE, 1);
798 /* mark end of receive descriptor list */
799 sc->sc_rdamark = sc->sc_nrda - 1;
803 NIC_PUT(sc, SNCR_URDA, UPPER(sc->v_rda));
804 NIC_PUT(sc, SNCR_CRDA, LOWER(sc->v_rda));
810 struct snc_softc *sc;
814 int bitmode = sc->bitmode;
817 NIC_PUT(sc, SNCR_EOBC, RBASIZE(sc) / 2 - 2);
819 NIC_PUT(sc, SNCR_EOBC, RBASIZE(sc) / 2 - 1);
821 NIC_PUT(sc, SNCR_URRA, UPPER(sc->v_rra[0]));
822 NIC_PUT(sc, SNCR_RSA, LOWER(sc->v_rra[0]));
823 /* rea must point just past the end of the rra space */
824 NIC_PUT(sc, SNCR_REA, LOWER(sc->v_rea));
825 NIC_PUT(sc, SNCR_RRP, LOWER(sc->v_rra[0]));
826 NIC_PUT(sc, SNCR_RSC, 0);
828 /* fill up SOME of the rra with buffers */
829 for (i = 0; i < NRBA; i++) {
830 v = SONIC_GETDMA(sc->rbuf[i]);
831 SWO(sc, sc->v_rra[i], RXRSRC_PTRHI, UPPER(v));
832 SWO(sc, sc->v_rra[i], RXRSRC_PTRLO, LOWER(v));
833 SWO(sc, sc->v_rra[i], RXRSRC_WCHI, UPPER(NBPG/2));
834 SWO(sc, sc->v_rra[i], RXRSRC_WCLO, LOWER(NBPG/2));
836 sc->sc_rramark = NRBA;
837 NIC_PUT(sc, SNCR_RWP, LOWER(sc->v_rra[sc->sc_rramark]));
845 struct snc_softc *sc = (struct snc_softc *)arg;
848 if (sc->sc_enabled == 0)
851 while ((isr = (NIC_GET(sc, SNCR_ISR) & ISR_ALL)) != 0) {
852 /* scrub the interrupts that we are going to service */
853 NIC_PUT(sc, SNCR_ISR, isr);
856 if (isr & (ISR_BR | ISR_LCD | ISR_TC))
857 device_printf(sc->sc_dev,
858 "unexpected interrupt status 0x%x\n",
861 if (isr & (ISR_TXDN | ISR_TXER | ISR_PINT))
867 if (isr & (ISR_HBL | ISR_RDE | ISR_RBE | ISR_RBAE | ISR_RFO)) {
870 * The repeater is not providing a heartbeat.
871 * In itself this isn't harmful, lots of the
872 * cheap repeater hubs don't supply a heartbeat.
873 * So ignore the lack of heartbeat. Its only
874 * if we can't detect a carrier that we have a
879 device_printf(sc->sc_dev,
880 "receive descriptors exhausted\n");
882 device_printf(sc->sc_dev,
883 "receive buffers exhausted\n");
885 device_printf(sc->sc_dev,
886 "receive buffer area exhausted\n");
888 device_printf(sc->sc_dev,
889 "receive FIFO overrun\n");
891 if (isr & (ISR_CRC | ISR_FAE | ISR_MP)) {
901 sncstart(&sc->sc_if);
905 rnd_add_uint32(&sc->rnd_source, isr);
912 * Transmit interrupt routine
916 struct snc_softc *sc;
920 unsigned short txp_status;
922 struct ifnet *ifp = &sc->sc_if;
926 if (mtd_hw == sc->mtd_free)
929 while (mtd_hw != sc->mtd_free) {
930 mtd = &sc->mtda[mtd_hw];
934 if (SRO(sc, txp, TXP_STATUS) == 0) {
935 break; /* it hasn't really gone yet */
939 if ((sncdebug & SNC_SHOWTXHDR) != 0)
941 struct ether_header eh;
943 (*sc->sc_copyfrombuf)(sc, &eh, mtd->mtd_vbuf, sizeof(eh));
944 device_printf(sc->sc_dev,
945 "xmit status=0x%x len=%d type=0x%x from %6D",
946 SRO(sc, txp, TXP_STATUS),
947 SRO(sc, txp, TXP_PKTSIZE),
948 htons(eh.ether_type),
949 eh.ether_shost, ":");
950 printf(" (to %6D)\n", eh.ether_dhost, ":");
952 #endif /* SNCDEBUG */
954 ifp->if_flags &= ~IFF_OACTIVE;
956 if (mtd->mtd_mbuf != 0) {
957 m_freem(mtd->mtd_mbuf);
960 if (++mtd_hw == NTDA) mtd_hw = 0;
962 txp_status = SRO(sc, txp, TXP_STATUS);
964 ifp->if_collisions += (txp_status & TCR_EXC) ? 16 :
965 ((txp_status & TCR_NC) >> 12);
967 if ((txp_status & TCR_PTX) == 0) {
969 device_printf(sc->sc_dev, "Tx packet status=0x%x\n",
972 /* XXX - DG This looks bogus */
973 if (mtd_hw != sc->mtd_free) {
974 printf("resubmitting remaining packets\n");
975 mtd = &sc->mtda[mtd_hw];
976 NIC_PUT(sc, SNCR_CTDA, LOWER(mtd->mtd_vtxp));
977 NIC_PUT(sc, SNCR_CR, CR_TXP);
989 * Receive interrupt routine
993 struct snc_softc *sc;
1000 u_int16_t rxpkt_ptr;
1002 rda = sc->v_rda + (sc->sc_rxmark * RXPKT_SIZE(sc));
1004 while (SRO(sc, rda, RXPKT_INUSE) == 0) {
1005 u_int status = SRO(sc, rda, RXPKT_STATUS);
1007 orra = RBASEQ(SRO(sc, rda, RXPKT_SEQNO)) & RRAMASK;
1008 rxpkt_ptr = SRO(sc, rda, RXPKT_PTRLO);
1010 * Do not trunc ether_header length.
1011 * Our sonic_read() and sonic_get() require it.
1013 len = SRO(sc, rda, RXPKT_BYTEC) - FCSSIZE;
1014 if (status & RCR_PRX) {
1015 /* XXX: Does PGOFSET require? */
1017 sc->rbuf[orra & RBAMASK] + (rxpkt_ptr & PGOFSET);
1018 if (sonic_read(sc, pkt, len))
1019 sc->sc_if.if_ipackets++;
1021 sc->sc_if.if_ierrors++;
1023 sc->sc_if.if_ierrors++;
1026 * give receive buffer area back to chip.
1028 * If this was the last packet in the RRA, give the RRA to
1030 * If sonic read didnt copy it out then we would have to
1032 * (dont bother add it back in again straight away)
1034 * Really, we're doing v_rra[rramark] = v_rra[orra] but
1035 * we have to use the macros because SONIC might be in
1036 * 16 or 32 bit mode.
1038 if (status & RCR_LPKT) {
1039 u_int32_t tmp1, tmp2;
1041 rramark = sc->sc_rramark;
1042 tmp1 = sc->v_rra[rramark];
1043 tmp2 = sc->v_rra[orra];
1044 SWO(sc, tmp1, RXRSRC_PTRLO,
1045 SRO(sc, tmp2, RXRSRC_PTRLO));
1046 SWO(sc, tmp1, RXRSRC_PTRHI,
1047 SRO(sc, tmp2, RXRSRC_PTRHI));
1048 SWO(sc, tmp1, RXRSRC_WCLO,
1049 SRO(sc, tmp2, RXRSRC_WCLO));
1050 SWO(sc, tmp1, RXRSRC_WCHI,
1051 SRO(sc, tmp2, RXRSRC_WCHI));
1053 /* zap old rra for fun */
1054 SWO(sc, tmp2, RXRSRC_WCHI, 0);
1055 SWO(sc, tmp2, RXRSRC_WCLO, 0);
1057 sc->sc_rramark = (++rramark) & RRAMASK;
1058 NIC_PUT(sc, SNCR_RWP, LOWER(sc->v_rra[rramark]));
1063 * give receive descriptor back to chip simple
1066 rdamark = sc->sc_rdamark;
1067 SWO(sc, rda, RXPKT_INUSE, 1);
1068 SWO(sc, rda, RXPKT_RLINK,
1069 SRO(sc, rda, RXPKT_RLINK) | EOL);
1070 SWO(sc, (sc->v_rda + (rdamark * RXPKT_SIZE(sc))), RXPKT_RLINK,
1071 SRO(sc, (sc->v_rda + (rdamark * RXPKT_SIZE(sc))),
1072 RXPKT_RLINK) & ~EOL);
1073 sc->sc_rdamark = sc->sc_rxmark;
1075 if (++sc->sc_rxmark >= sc->sc_nrda)
1077 rda = sc->v_rda + (sc->sc_rxmark * RXPKT_SIZE(sc));
1082 * sonic_read -- pull packet off interface and forward to
1083 * appropriate protocol handler
1086 sonic_read(sc, pkt, len)
1087 struct snc_softc *sc;
1091 struct ifnet *ifp = &sc->sc_if;
1092 struct ether_header *et;
1095 if (len <= sizeof(struct ether_header) ||
1096 len > ETHERMTU + sizeof(struct ether_header)) {
1097 device_printf(sc->sc_dev,
1098 "invalid packet length %d bytes\n", len);
1102 /* Pull packet off interface. */
1103 m = sonic_get(sc, pkt, len);
1108 /* We assume that the header fit entirely in one mbuf. */
1109 et = mtod(m, struct ether_header *);
1112 if ((sncdebug & SNC_SHOWRXHDR) != 0)
1114 device_printf(sc->sc_dev, "rcvd 0x%x len=%d type=0x%x from %6D",
1115 pkt, len, htons(et->ether_type),
1116 et->ether_shost, ":");
1117 printf(" (to %6D)\n", et->ether_dhost, ":");
1119 #endif /* SNCDEBUG */
1121 /* Pass the packet up, with the ether header sort-of removed. */
1122 m_adj(m, sizeof(struct ether_header));
1123 ether_input(ifp, et, m);
1129 * munge the received packet into an mbuf chain
1132 sonic_get(sc, pkt, datalen)
1133 struct snc_softc *sc;
1137 struct mbuf *m, *top, **mp;
1140 * Do not trunc ether_header length.
1141 * Our sonic_read() and sonic_get() require it.
1144 MGETHDR(m, M_DONTWAIT, MT_DATA);
1147 m->m_pkthdr.rcvif = &sc->sc_if;
1148 m->m_pkthdr.len = datalen;
1153 while (datalen > 0) {
1155 MGET(m, M_DONTWAIT, MT_DATA);
1162 if (datalen >= MINCLSIZE) {
1163 MCLGET(m, M_DONTWAIT);
1164 if ((m->m_flags & M_EXT) == 0) {
1165 if (top) m_freem(top);
1174 ALIGN(sizeof(struct ether_header)) -
1175 sizeof(struct ether_header);
1180 m->m_len = len = min(datalen, len);
1182 (*sc->sc_copyfrombuf)(sc, mtod(m, caddr_t), pkt, len);
1192 * Enable power on the interface.
1196 struct snc_softc *sc;
1200 device_printf(sc->sc_dev, "snc_enable()\n");
1201 #endif /* SNCDEBUG */
1203 if (sc->sc_enabled == 0 && sc->sc_enable != NULL) {
1204 if ((*sc->sc_enable)(sc) != 0) {
1205 device_printf(sc->sc_dev, "device enable failed\n");
1215 * Disable power on the interface.
1219 struct snc_softc *sc;
1223 device_printf(sc->sc_dev, "snc_disable()\n");
1224 #endif /* SNCDEBUG */
1226 if (sc->sc_enabled != 0 && sc->sc_disable != NULL) {
1227 (*sc->sc_disable)(sc);