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 1.7 2004/03/14 15:36:52 joerg 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);
104 hide void sncstart (struct ifnet *ifp);
105 hide void sncreset (struct snc_softc *sc);
107 hide void caminitialise (struct snc_softc *);
108 hide void camentry (struct snc_softc *, int, u_char *ea);
109 hide void camprogram (struct snc_softc *);
110 hide void initialise_tda (struct snc_softc *);
111 hide void initialise_rda (struct snc_softc *);
112 hide void initialise_rra (struct snc_softc *);
114 hide void camdump (struct snc_softc *sc);
117 hide void sonictxint (struct snc_softc *);
118 hide void sonicrxint (struct snc_softc *);
120 hide u_int sonicput (struct snc_softc *sc, struct mbuf *m0,
122 hide int sonic_read (struct snc_softc *, u_int32_t, int);
123 hide struct mbuf *sonic_get (struct snc_softc *,
126 int snc_enable (struct snc_softc *);
127 void snc_disable (struct snc_softc *);
129 int snc_mediachange (struct ifnet *);
130 void snc_mediastatus (struct ifnet *, struct ifmediareq *);
134 struct cfdriver snc_cd = {
135 NULL, "snc", DV_IFNET
144 #define assert(e) ((void)0)
145 #define _assert(e) ((void)0)
147 #define _assert(e) assert(e)
149 #define assert(e) ((e) ? (void)0 : __assert("snc ", __FILE__, __LINE__, #e))
151 #define assert(e) ((e) ? (void)0 : __assert("snc "__FILE__, __LINE__, "e"))
156 #define SNC_SHOWTXHDR 0x01 /* show tx ether_header */
157 #define SNC_SHOWRXHDR 0x02 /* show rx ether_header */
158 #define SNC_SHOWCAMENT 0x04 /* show CAM entry */
159 #endif /* SNCDEBUG */
164 sncconfig(sc, media, nmedia, defmedia, eaddr)
165 struct snc_softc *sc;
166 int *media, nmedia, defmedia;
169 struct ifnet *ifp = &sc->sc_if;
173 if ((sncdebug & SNC_SHOWCAMENT) != 0) {
177 device_printf(sc->sc_dev, "address %6D\n", eaddr, ":");
180 device_printf(sc->sc_dev,
181 "buffers: rra=0x%x cda=0x%x rda=0x%x tda=0x%x\n",
182 sc->v_rra[0], sc->v_cda,
183 sc->v_rda, sc->mtda[0].mtd_vtxp);
187 if_initname(ifp, "snc", device_get_unit(sc->sc_dev));
188 ifp->if_ioctl = sncioctl;
189 ifp->if_output = ether_output;
190 ifp->if_start = sncstart;
192 IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
193 ifp->if_watchdog = sncwatchdog;
194 ifp->if_init = sncinit;
195 ifp->if_mtu = ETHERMTU;
196 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
198 /* Initialize media goo. */
199 ifmedia_init(&sc->sc_media, 0, snc_mediachange,
202 for (i = 0; i < nmedia; i++)
203 ifmedia_add(&sc->sc_media, media[i], 0, NULL);
204 ifmedia_set(&sc->sc_media, defmedia);
206 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL);
207 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL);
210 ether_ifattach(ifp, eaddr);
213 rnd_attach_source(&sc->rnd_source, device_get_nameunit(sc->sc_dev),
223 sncstop((struct snc_softc *)arg);
227 * Media change callback.
233 struct snc_softc *sc = ifp->if_softc;
235 if (sc->sc_mediachange)
236 return ((*sc->sc_mediachange)(sc));
241 * Media status callback.
244 snc_mediastatus(ifp, ifmr)
246 struct ifmediareq *ifmr;
248 struct snc_softc *sc = ifp->if_softc;
250 if (sc->sc_enabled == 0) {
251 ifmr->ifm_active = IFM_ETHER | IFM_NONE;
252 ifmr->ifm_status = 0;
256 if (sc->sc_mediastatus)
257 (*sc->sc_mediastatus)(sc, ifmr);
262 sncioctl(ifp, cmd, data)
268 struct snc_softc *sc = ifp->if_softc;
269 int s = splhardnet(), err = 0;
277 err = ether_ioctl(ifp, cmd, data);
281 if ((ifp->if_flags & IFF_UP) == 0 &&
282 (ifp->if_flags & IFF_RUNNING) != 0) {
284 * If interface is marked down and it is running,
288 ifp->if_flags &= ~IFF_RUNNING;
290 } else if ((ifp->if_flags & IFF_UP) != 0 &&
291 (ifp->if_flags & IFF_RUNNING) == 0) {
293 * If interface is marked up and it is stopped,
296 if ((err = snc_enable(sc)) != 0)
299 } else if (sc->sc_enabled) {
301 * reset the interface to pick up any other changes
304 temp = ifp->if_flags & IFF_UP;
306 ifp->if_flags |= temp;
313 if (sc->sc_enabled == 0) {
317 temp = ifp->if_flags & IFF_UP;
319 ifp->if_flags |= temp;
324 ifr = (struct ifreq *) data;
325 err = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd);
335 * Encapsulate a packet of type family for the local net.
341 struct snc_softc *sc = ifp->if_softc;
345 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
349 /* Check for room in the xmit buffer. */
350 if ((mtd_next = (sc->mtd_free + 1)) == NTDA)
353 if (mtd_next == sc->mtd_hw) {
354 ifp->if_flags |= IFF_OACTIVE;
358 IF_DEQUEUE(&ifp->if_snd, m);
362 /* We need the header for m_pkthdr.len. */
363 if ((m->m_flags & M_PKTHDR) == 0)
364 panic("%s: sncstart: no header mbuf",
365 device_get_nameunit(sc->sc_dev));
368 * If bpf is listening on this interface, let it
369 * see the packet before we commit it to the wire.
375 * If there is nothing in the o/p queue, and there is room in
376 * the Tx ring, then send the packet directly. Otherwise append
377 * it to the o/p queue.
379 if ((sonicput(sc, m, mtd_next)) == 0) {
380 IF_PREPEND(&ifp->if_snd, m);
384 sc->mtd_prev = sc->mtd_free;
385 sc->mtd_free = mtd_next;
387 ifp->if_opackets++; /* # of pkts */
389 /* Jump back for possibly more punishment. */
394 * reset and restart the SONIC. Called in case of fatal
395 * hardware/software errors.
399 struct snc_softc *sc;
409 struct snc_softc *sc = xsc;
413 if (sc->sc_if.if_flags & IFF_RUNNING)
414 /* already running */
419 NIC_PUT(sc, SNCR_CR, CR_RST); /* DCR only accessable in reset mode! */
422 NIC_PUT(sc, SNCR_DCR, (sc->sncr_dcr |
423 (sc->bitmode ? DCR_DW32 : DCR_DW16)));
424 NIC_PUT(sc, SNCR_DCR2, sc->sncr_dcr2);
426 s_rcr = RCR_BRD | RCR_LBNONE;
427 if (sc->sc_if.if_flags & IFF_PROMISC)
429 if (sc->sc_if.if_flags & IFF_ALLMULTI)
431 NIC_PUT(sc, SNCR_RCR, s_rcr);
433 NIC_PUT(sc, SNCR_IMR, (IMR_PRXEN | IMR_PTXEN | IMR_TXEREN | IMR_LCDEN));
435 /* clear pending interrupts */
436 NIC_PUT(sc, SNCR_ISR, ISR_ALL);
438 /* clear tally counters */
439 NIC_PUT(sc, SNCR_CRCT, -1);
440 NIC_PUT(sc, SNCR_FAET, -1);
441 NIC_PUT(sc, SNCR_MPT, -1);
447 /* enable the chip */
448 NIC_PUT(sc, SNCR_CR, 0);
451 /* program the CAM */
454 /* get it to read resource descriptors */
455 NIC_PUT(sc, SNCR_CR, CR_RRRA);
457 while ((NIC_GET(sc, SNCR_CR)) & CR_RRRA)
461 NIC_PUT(sc, SNCR_CR, CR_RXEN);
464 /* flag interface as "running" */
465 sc->sc_if.if_flags |= IFF_RUNNING;
466 sc->sc_if.if_flags &= ~IFF_OACTIVE;
473 * close down an interface and free its buffers
474 * Called on final close of device, or if sncinit() fails
479 struct snc_softc *sc;
482 int s = splhardnet();
484 /* stick chip in reset */
485 NIC_PUT(sc, SNCR_CR, CR_RST);
488 /* free all receive buffers (currently static so nothing to do) */
490 /* free all pending transmit mbufs */
491 while (sc->mtd_hw != sc->mtd_free) {
492 mtd = &sc->mtda[sc->mtd_hw];
494 m_freem(mtd->mtd_mbuf);
495 if (++sc->mtd_hw == NTDA) sc->mtd_hw = 0;
498 sc->sc_if.if_timer = 0;
499 sc->sc_if.if_flags &= ~(IFF_RUNNING | IFF_UP);
506 * Called if any Tx packets remain unsent after 5 seconds,
507 * In all cases we just reset the chip, and any retransmission
508 * will be handled by higher level protocol timeouts.
514 struct snc_softc *sc = ifp->if_softc;
518 if (sc->mtd_hw != sc->mtd_free) {
519 /* something still pending for transmit */
520 mtd = &sc->mtda[sc->mtd_hw];
521 if (SRO(sc, mtd->mtd_vtxp, TXP_STATUS) == 0)
522 log(LOG_ERR, "%s: Tx - timeout\n",
523 device_get_nameunit(sc->sc_dev));
525 log(LOG_ERR, "%s: Tx - lost interrupt\n",
526 device_get_nameunit(sc->sc_dev));
527 temp = ifp->if_flags & IFF_UP;
529 ifp->if_flags |= temp;
534 * stuff packet into sonic (at splnet)
537 sonicput(sc, m0, mtd_next)
538 struct snc_softc *sc;
549 #ifdef whyonearthwouldyoudothis
550 if (NIC_GET(sc, SNCR_CR) & CR_TXP)
554 /* grab the replacement mtd */
555 mtdp = &sc->mtda[sc->mtd_free];
557 buff = mtdp->mtd_vbuf;
559 /* this packet goes to mtdnext fill in the TDA */
561 txp = mtdp->mtd_vtxp;
563 /* Write to the config word. Every (NTDA/2)+1 packets we set an intr */
564 if (sc->mtd_pint == 0) {
565 sc->mtd_pint = NTDA/2;
566 SWO(sc, txp, TXP_CONFIG, TCR_PINT);
569 SWO(sc, txp, TXP_CONFIG, 0);
572 for (m = m0; m; m = m->m_next) {
575 (*sc->sc_copytobuf)(sc, mtod(m, caddr_t), buff, len);
578 if (totlen >= TXBSIZE) {
579 panic("%s: sonicput: packet overflow",
580 device_get_nameunit(sc->sc_dev));
583 SWO(sc, txp, TXP_FRAGOFF + (0 * TXP_FRAGSIZE) + TXP_FPTRLO,
584 LOWER(mtdp->mtd_vbuf));
585 SWO(sc, txp, TXP_FRAGOFF + (0 * TXP_FRAGSIZE) + TXP_FPTRHI,
586 UPPER(mtdp->mtd_vbuf));
588 if (totlen < ETHERMIN + sizeof(struct ether_header)) {
589 int pad = ETHERMIN + sizeof(struct ether_header) - totlen;
590 (*sc->sc_zerobuf)(sc, mtdp->mtd_vbuf + totlen, pad);
591 totlen = ETHERMIN + sizeof(struct ether_header);
594 SWO(sc, txp, TXP_FRAGOFF + (0 * TXP_FRAGSIZE) + TXP_FSIZE,
596 SWO(sc, txp, TXP_FRAGCNT, 1);
597 SWO(sc, txp, TXP_PKTSIZE, totlen);
599 /* link onto the next mtd that will be used */
600 SWO(sc, txp, TXP_FRAGOFF + (1 * TXP_FRAGSIZE) + TXP_FPTRLO,
601 LOWER(sc->mtda[mtd_next].mtd_vtxp) | EOL);
604 * The previous txp.tlink currently contains a pointer to
605 * our txp | EOL. Want to clear the EOL, so write our
606 * pointer to the previous txp.
608 SWO(sc, sc->mtda[sc->mtd_prev].mtd_vtxp, sc->mtd_tlinko,
609 LOWER(mtdp->mtd_vtxp));
611 /* make sure chip is running */
613 NIC_PUT(sc, SNCR_CR, CR_TXP);
615 sc->sc_if.if_timer = 5; /* 5 seconds to watch for failing to transmit */
621 * These are called from sonicioctl() when /etc/ifconfig is run to set
622 * the address or switch the i/f on.
629 struct snc_softc *sc;
631 u_int32_t v_cda = sc->v_cda;
635 for (i = 0; i < MAXCAM; i++) {
636 camoffset = i * CDA_CAMDESC;
637 SWO(sc, v_cda, (camoffset + CDA_CAMEP), i);
638 SWO(sc, v_cda, (camoffset + CDA_CAMAP2), 0);
639 SWO(sc, v_cda, (camoffset + CDA_CAMAP1), 0);
640 SWO(sc, v_cda, (camoffset + CDA_CAMAP0), 0);
642 SWO(sc, v_cda, CDA_ENABLE, 0);
645 if ((sncdebug & SNC_SHOWCAMENT) != 0) {
652 camentry(sc, entry, ea)
655 struct snc_softc *sc;
657 u_int32_t v_cda = sc->v_cda;
658 int camoffset = entry * CDA_CAMDESC;
660 SWO(sc, v_cda, camoffset + CDA_CAMEP, entry);
661 SWO(sc, v_cda, camoffset + CDA_CAMAP2, (ea[5] << 8) | ea[4]);
662 SWO(sc, v_cda, camoffset + CDA_CAMAP1, (ea[3] << 8) | ea[2]);
663 SWO(sc, v_cda, camoffset + CDA_CAMAP0, (ea[1] << 8) | ea[0]);
664 SWO(sc, v_cda, CDA_ENABLE,
665 (SRO(sc, v_cda, CDA_ENABLE) | (1 << entry)));
670 struct snc_softc *sc;
672 struct ifmultiaddr *ifma;
681 /* Always load our own address first. */
682 camentry (sc, mcount, sc->sc_ethercom.ac_enaddr);
685 /* Assume we won't need allmulti bit. */
686 ifp->if_flags &= ~IFF_ALLMULTI;
688 /* Loop through multicast addresses */
689 for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
690 ifma = ifma->ifma_link.le_next) {
691 if (ifma->ifma_addr->sa_family != AF_LINK)
693 if (mcount == MAXCAM) {
694 ifp->if_flags |= IFF_ALLMULTI;
698 /* program the CAM with the specified entry */
700 LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
704 NIC_PUT(sc, SNCR_CDP, LOWER(sc->v_cda));
705 NIC_PUT(sc, SNCR_CDC, MAXCAM);
706 NIC_PUT(sc, SNCR_CR, CR_LCAM);
710 while ((NIC_GET(sc, SNCR_CR) & CR_LCAM) && timeout--)
714 panic("%s: CAM initialisation failed\n",
715 device_get_nameunit(sc->sc_dev));
718 while (((NIC_GET(sc, SNCR_ISR) & ISR_LCD) == 0) && timeout--)
721 if (NIC_GET(sc, SNCR_ISR) & ISR_LCD)
722 NIC_PUT(sc, SNCR_ISR, ISR_LCD);
724 device_printf(sc->sc_dev,
725 "CAM initialisation without interrupt\n");
731 struct snc_softc *sc;
735 printf("CAM entries:\n");
736 NIC_PUT(sc, SNCR_CR, CR_RST);
739 for (i = 0; i < 16; i++) {
740 ushort ap2, ap1, ap0;
741 NIC_PUT(sc, SNCR_CEP, i);
743 ap2 = NIC_GET(sc, SNCR_CAP2);
744 ap1 = NIC_GET(sc, SNCR_CAP1);
745 ap0 = NIC_GET(sc, SNCR_CAP0);
746 printf("%d: ap2=0x%x ap1=0x%x ap0=0x%x\n", i, ap2, ap1, ap0);
748 printf("CAM enable 0x%x\n", NIC_GET(sc, SNCR_CEP));
750 NIC_PUT(sc, SNCR_CR, 0);
757 struct snc_softc *sc;
762 for (i = 0; i < NTDA; i++) {
768 sc->mtd_prev = NTDA - 1;
770 sc->mtd_tlinko = TXP_FRAGOFF + 1*TXP_FRAGSIZE + TXP_FPTRLO;
771 sc->mtd_pint = NTDA/2;
773 NIC_PUT(sc, SNCR_UTDA, UPPER(sc->mtda[0].mtd_vtxp));
774 NIC_PUT(sc, SNCR_CTDA, LOWER(sc->mtda[0].mtd_vtxp));
779 struct snc_softc *sc;
782 u_int32_t vv_rda = 0;
785 /* link the RDA's together into a circular list */
786 for (i = 0; i < (sc->sc_nrda - 1); i++) {
787 v_rda = sc->v_rda + (i * RXPKT_SIZE(sc));
788 vv_rda = sc->v_rda + ((i+1) * RXPKT_SIZE(sc));
789 SWO(sc, v_rda, RXPKT_RLINK, LOWER(vv_rda));
790 SWO(sc, v_rda, RXPKT_INUSE, 1);
792 v_rda = sc->v_rda + ((sc->sc_nrda - 1) * RXPKT_SIZE(sc));
793 SWO(sc, v_rda, RXPKT_RLINK, LOWER(sc->v_rda) | EOL);
794 SWO(sc, v_rda, RXPKT_INUSE, 1);
796 /* mark end of receive descriptor list */
797 sc->sc_rdamark = sc->sc_nrda - 1;
801 NIC_PUT(sc, SNCR_URDA, UPPER(sc->v_rda));
802 NIC_PUT(sc, SNCR_CRDA, LOWER(sc->v_rda));
808 struct snc_softc *sc;
812 int bitmode = sc->bitmode;
815 NIC_PUT(sc, SNCR_EOBC, RBASIZE(sc) / 2 - 2);
817 NIC_PUT(sc, SNCR_EOBC, RBASIZE(sc) / 2 - 1);
819 NIC_PUT(sc, SNCR_URRA, UPPER(sc->v_rra[0]));
820 NIC_PUT(sc, SNCR_RSA, LOWER(sc->v_rra[0]));
821 /* rea must point just past the end of the rra space */
822 NIC_PUT(sc, SNCR_REA, LOWER(sc->v_rea));
823 NIC_PUT(sc, SNCR_RRP, LOWER(sc->v_rra[0]));
824 NIC_PUT(sc, SNCR_RSC, 0);
826 /* fill up SOME of the rra with buffers */
827 for (i = 0; i < NRBA; i++) {
828 v = SONIC_GETDMA(sc->rbuf[i]);
829 SWO(sc, sc->v_rra[i], RXRSRC_PTRHI, UPPER(v));
830 SWO(sc, sc->v_rra[i], RXRSRC_PTRLO, LOWER(v));
831 SWO(sc, sc->v_rra[i], RXRSRC_WCHI, UPPER(NBPG/2));
832 SWO(sc, sc->v_rra[i], RXRSRC_WCLO, LOWER(NBPG/2));
834 sc->sc_rramark = NRBA;
835 NIC_PUT(sc, SNCR_RWP, LOWER(sc->v_rra[sc->sc_rramark]));
843 struct snc_softc *sc = (struct snc_softc *)arg;
846 if (sc->sc_enabled == 0)
849 while ((isr = (NIC_GET(sc, SNCR_ISR) & ISR_ALL)) != 0) {
850 /* scrub the interrupts that we are going to service */
851 NIC_PUT(sc, SNCR_ISR, isr);
854 if (isr & (ISR_BR | ISR_LCD | ISR_TC))
855 device_printf(sc->sc_dev,
856 "unexpected interrupt status 0x%x\n",
859 if (isr & (ISR_TXDN | ISR_TXER | ISR_PINT))
865 if (isr & (ISR_HBL | ISR_RDE | ISR_RBE | ISR_RBAE | ISR_RFO)) {
868 * The repeater is not providing a heartbeat.
869 * In itself this isn't harmful, lots of the
870 * cheap repeater hubs don't supply a heartbeat.
871 * So ignore the lack of heartbeat. Its only
872 * if we can't detect a carrier that we have a
877 device_printf(sc->sc_dev,
878 "receive descriptors exhausted\n");
880 device_printf(sc->sc_dev,
881 "receive buffers exhausted\n");
883 device_printf(sc->sc_dev,
884 "receive buffer area exhausted\n");
886 device_printf(sc->sc_dev,
887 "receive FIFO overrun\n");
889 if (isr & (ISR_CRC | ISR_FAE | ISR_MP)) {
899 sncstart(&sc->sc_if);
903 rnd_add_uint32(&sc->rnd_source, isr);
910 * Transmit interrupt routine
914 struct snc_softc *sc;
918 unsigned short txp_status;
920 struct ifnet *ifp = &sc->sc_if;
924 if (mtd_hw == sc->mtd_free)
927 while (mtd_hw != sc->mtd_free) {
928 mtd = &sc->mtda[mtd_hw];
932 if (SRO(sc, txp, TXP_STATUS) == 0) {
933 break; /* it hasn't really gone yet */
937 if ((sncdebug & SNC_SHOWTXHDR) != 0)
939 struct ether_header eh;
941 (*sc->sc_copyfrombuf)(sc, &eh, mtd->mtd_vbuf, sizeof(eh));
942 device_printf(sc->sc_dev,
943 "xmit status=0x%x len=%d type=0x%x from %6D",
944 SRO(sc, txp, TXP_STATUS),
945 SRO(sc, txp, TXP_PKTSIZE),
946 htons(eh.ether_type),
947 eh.ether_shost, ":");
948 printf(" (to %6D)\n", eh.ether_dhost, ":");
950 #endif /* SNCDEBUG */
952 ifp->if_flags &= ~IFF_OACTIVE;
954 if (mtd->mtd_mbuf != 0) {
955 m_freem(mtd->mtd_mbuf);
958 if (++mtd_hw == NTDA) mtd_hw = 0;
960 txp_status = SRO(sc, txp, TXP_STATUS);
962 ifp->if_collisions += (txp_status & TCR_EXC) ? 16 :
963 ((txp_status & TCR_NC) >> 12);
965 if ((txp_status & TCR_PTX) == 0) {
967 device_printf(sc->sc_dev, "Tx packet status=0x%x\n",
970 /* XXX - DG This looks bogus */
971 if (mtd_hw != sc->mtd_free) {
972 printf("resubmitting remaining packets\n");
973 mtd = &sc->mtda[mtd_hw];
974 NIC_PUT(sc, SNCR_CTDA, LOWER(mtd->mtd_vtxp));
975 NIC_PUT(sc, SNCR_CR, CR_TXP);
987 * Receive interrupt routine
991 struct snc_softc *sc;
1000 rda = sc->v_rda + (sc->sc_rxmark * RXPKT_SIZE(sc));
1002 while (SRO(sc, rda, RXPKT_INUSE) == 0) {
1003 u_int status = SRO(sc, rda, RXPKT_STATUS);
1005 orra = RBASEQ(SRO(sc, rda, RXPKT_SEQNO)) & RRAMASK;
1006 rxpkt_ptr = SRO(sc, rda, RXPKT_PTRLO);
1008 * Do not trunc ether_header length.
1009 * Our sonic_read() and sonic_get() require it.
1011 len = SRO(sc, rda, RXPKT_BYTEC) - FCSSIZE;
1012 if (status & RCR_PRX) {
1013 /* XXX: Does PGOFSET require? */
1015 sc->rbuf[orra & RBAMASK] + (rxpkt_ptr & PGOFSET);
1016 if (sonic_read(sc, pkt, len))
1017 sc->sc_if.if_ipackets++;
1019 sc->sc_if.if_ierrors++;
1021 sc->sc_if.if_ierrors++;
1024 * give receive buffer area back to chip.
1026 * If this was the last packet in the RRA, give the RRA to
1028 * If sonic read didnt copy it out then we would have to
1030 * (dont bother add it back in again straight away)
1032 * Really, we're doing v_rra[rramark] = v_rra[orra] but
1033 * we have to use the macros because SONIC might be in
1034 * 16 or 32 bit mode.
1036 if (status & RCR_LPKT) {
1037 u_int32_t tmp1, tmp2;
1039 rramark = sc->sc_rramark;
1040 tmp1 = sc->v_rra[rramark];
1041 tmp2 = sc->v_rra[orra];
1042 SWO(sc, tmp1, RXRSRC_PTRLO,
1043 SRO(sc, tmp2, RXRSRC_PTRLO));
1044 SWO(sc, tmp1, RXRSRC_PTRHI,
1045 SRO(sc, tmp2, RXRSRC_PTRHI));
1046 SWO(sc, tmp1, RXRSRC_WCLO,
1047 SRO(sc, tmp2, RXRSRC_WCLO));
1048 SWO(sc, tmp1, RXRSRC_WCHI,
1049 SRO(sc, tmp2, RXRSRC_WCHI));
1051 /* zap old rra for fun */
1052 SWO(sc, tmp2, RXRSRC_WCHI, 0);
1053 SWO(sc, tmp2, RXRSRC_WCLO, 0);
1055 sc->sc_rramark = (++rramark) & RRAMASK;
1056 NIC_PUT(sc, SNCR_RWP, LOWER(sc->v_rra[rramark]));
1061 * give receive descriptor back to chip simple
1064 rdamark = sc->sc_rdamark;
1065 SWO(sc, rda, RXPKT_INUSE, 1);
1066 SWO(sc, rda, RXPKT_RLINK,
1067 SRO(sc, rda, RXPKT_RLINK) | EOL);
1068 SWO(sc, (sc->v_rda + (rdamark * RXPKT_SIZE(sc))), RXPKT_RLINK,
1069 SRO(sc, (sc->v_rda + (rdamark * RXPKT_SIZE(sc))),
1070 RXPKT_RLINK) & ~EOL);
1071 sc->sc_rdamark = sc->sc_rxmark;
1073 if (++sc->sc_rxmark >= sc->sc_nrda)
1075 rda = sc->v_rda + (sc->sc_rxmark * RXPKT_SIZE(sc));
1080 * sonic_read -- pull packet off interface and forward to
1081 * appropriate protocol handler
1084 sonic_read(sc, pkt, len)
1085 struct snc_softc *sc;
1089 struct ifnet *ifp = &sc->sc_if;
1090 struct ether_header *et;
1093 if (len <= sizeof(struct ether_header) ||
1094 len > ETHERMTU + sizeof(struct ether_header)) {
1095 device_printf(sc->sc_dev,
1096 "invalid packet length %d bytes\n", len);
1100 /* Pull packet off interface. */
1101 m = sonic_get(sc, pkt, len);
1106 /* We assume that the header fit entirely in one mbuf. */
1107 et = mtod(m, struct ether_header *);
1110 if ((sncdebug & SNC_SHOWRXHDR) != 0)
1112 device_printf(sc->sc_dev, "rcvd 0x%x len=%d type=0x%x from %6D",
1113 pkt, len, htons(et->ether_type),
1114 et->ether_shost, ":");
1115 printf(" (to %6D)\n", et->ether_dhost, ":");
1117 #endif /* SNCDEBUG */
1119 /* Pass the packet up, with the ether header sort-of removed. */
1120 m_adj(m, sizeof(struct ether_header));
1121 ether_input(ifp, et, m);
1127 * munge the received packet into an mbuf chain
1130 sonic_get(sc, pkt, datalen)
1131 struct snc_softc *sc;
1135 struct mbuf *m, *top, **mp;
1138 * Do not trunc ether_header length.
1139 * Our sonic_read() and sonic_get() require it.
1142 MGETHDR(m, M_DONTWAIT, MT_DATA);
1145 m->m_pkthdr.rcvif = &sc->sc_if;
1146 m->m_pkthdr.len = datalen;
1151 while (datalen > 0) {
1153 MGET(m, M_DONTWAIT, MT_DATA);
1160 if (datalen >= MINCLSIZE) {
1161 MCLGET(m, M_DONTWAIT);
1162 if ((m->m_flags & M_EXT) == 0) {
1163 if (top) m_freem(top);
1172 ALIGN(sizeof(struct ether_header)) -
1173 sizeof(struct ether_header);
1178 m->m_len = len = min(datalen, len);
1180 (*sc->sc_copyfrombuf)(sc, mtod(m, caddr_t), pkt, len);
1190 * Enable power on the interface.
1194 struct snc_softc *sc;
1198 device_printf(sc->sc_dev, "snc_enable()\n");
1199 #endif /* SNCDEBUG */
1201 if (sc->sc_enabled == 0 && sc->sc_enable != NULL) {
1202 if ((*sc->sc_enable)(sc) != 0) {
1203 device_printf(sc->sc_dev, "device enable failed\n");
1213 * Disable power on the interface.
1217 struct snc_softc *sc;
1221 device_printf(sc->sc_dev, "snc_disable()\n");
1222 #endif /* SNCDEBUG */
1224 if (sc->sc_enabled != 0 && sc->sc_disable != NULL) {
1225 (*sc->sc_disable)(sc);