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 1.6 2004/01/06 01:40:49 dillon 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, myea)
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", myea, ":");
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;
197 bcopy(myea, sc->sc_ethercom.ac_enaddr, ETHER_ADDR_LEN);
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, ETHER_BPF_SUPPORTED);
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)
269 struct snc_softc *sc = ifp->if_softc;
270 int s = splhardnet(), err = 0;
278 err = ether_ioctl(ifp, cmd, data);
282 if ((ifp->if_flags & IFF_UP) == 0 &&
283 (ifp->if_flags & IFF_RUNNING) != 0) {
285 * If interface is marked down and it is running,
289 ifp->if_flags &= ~IFF_RUNNING;
291 } else if ((ifp->if_flags & IFF_UP) != 0 &&
292 (ifp->if_flags & IFF_RUNNING) == 0) {
294 * If interface is marked up and it is stopped,
297 if ((err = snc_enable(sc)) != 0)
300 } else if (sc->sc_enabled) {
302 * reset the interface to pick up any other changes
305 temp = ifp->if_flags & IFF_UP;
307 ifp->if_flags |= temp;
314 if (sc->sc_enabled == 0) {
318 temp = ifp->if_flags & IFF_UP;
320 ifp->if_flags |= temp;
325 ifr = (struct ifreq *) data;
326 err = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd);
336 * Encapsulate a packet of type family for the local net.
342 struct snc_softc *sc = ifp->if_softc;
346 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
350 /* Check for room in the xmit buffer. */
351 if ((mtd_next = (sc->mtd_free + 1)) == NTDA)
354 if (mtd_next == sc->mtd_hw) {
355 ifp->if_flags |= IFF_OACTIVE;
359 IF_DEQUEUE(&ifp->if_snd, m);
363 /* We need the header for m_pkthdr.len. */
364 if ((m->m_flags & M_PKTHDR) == 0)
365 panic("%s: sncstart: no header mbuf",
366 device_get_nameunit(sc->sc_dev));
369 * If bpf is listening on this interface, let it
370 * see the packet before we commit it to the wire.
376 * If there is nothing in the o/p queue, and there is room in
377 * the Tx ring, then send the packet directly. Otherwise append
378 * it to the o/p queue.
380 if ((sonicput(sc, m, mtd_next)) == 0) {
381 IF_PREPEND(&ifp->if_snd, m);
385 sc->mtd_prev = sc->mtd_free;
386 sc->mtd_free = mtd_next;
388 ifp->if_opackets++; /* # of pkts */
390 /* Jump back for possibly more punishment. */
395 * reset and restart the SONIC. Called in case of fatal
396 * hardware/software errors.
400 struct snc_softc *sc;
410 struct snc_softc *sc = xsc;
414 if (sc->sc_if.if_flags & IFF_RUNNING)
415 /* already running */
420 NIC_PUT(sc, SNCR_CR, CR_RST); /* DCR only accessable in reset mode! */
423 NIC_PUT(sc, SNCR_DCR, (sc->sncr_dcr |
424 (sc->bitmode ? DCR_DW32 : DCR_DW16)));
425 NIC_PUT(sc, SNCR_DCR2, sc->sncr_dcr2);
427 s_rcr = RCR_BRD | RCR_LBNONE;
428 if (sc->sc_if.if_flags & IFF_PROMISC)
430 if (sc->sc_if.if_flags & IFF_ALLMULTI)
432 NIC_PUT(sc, SNCR_RCR, s_rcr);
434 NIC_PUT(sc, SNCR_IMR, (IMR_PRXEN | IMR_PTXEN | IMR_TXEREN | IMR_LCDEN));
436 /* clear pending interrupts */
437 NIC_PUT(sc, SNCR_ISR, ISR_ALL);
439 /* clear tally counters */
440 NIC_PUT(sc, SNCR_CRCT, -1);
441 NIC_PUT(sc, SNCR_FAET, -1);
442 NIC_PUT(sc, SNCR_MPT, -1);
448 /* enable the chip */
449 NIC_PUT(sc, SNCR_CR, 0);
452 /* program the CAM */
455 /* get it to read resource descriptors */
456 NIC_PUT(sc, SNCR_CR, CR_RRRA);
458 while ((NIC_GET(sc, SNCR_CR)) & CR_RRRA)
462 NIC_PUT(sc, SNCR_CR, CR_RXEN);
465 /* flag interface as "running" */
466 sc->sc_if.if_flags |= IFF_RUNNING;
467 sc->sc_if.if_flags &= ~IFF_OACTIVE;
474 * close down an interface and free its buffers
475 * Called on final close of device, or if sncinit() fails
480 struct snc_softc *sc;
483 int s = splhardnet();
485 /* stick chip in reset */
486 NIC_PUT(sc, SNCR_CR, CR_RST);
489 /* free all receive buffers (currently static so nothing to do) */
491 /* free all pending transmit mbufs */
492 while (sc->mtd_hw != sc->mtd_free) {
493 mtd = &sc->mtda[sc->mtd_hw];
495 m_freem(mtd->mtd_mbuf);
496 if (++sc->mtd_hw == NTDA) sc->mtd_hw = 0;
499 sc->sc_if.if_timer = 0;
500 sc->sc_if.if_flags &= ~(IFF_RUNNING | IFF_UP);
507 * Called if any Tx packets remain unsent after 5 seconds,
508 * In all cases we just reset the chip, and any retransmission
509 * will be handled by higher level protocol timeouts.
515 struct snc_softc *sc = ifp->if_softc;
519 if (sc->mtd_hw != sc->mtd_free) {
520 /* something still pending for transmit */
521 mtd = &sc->mtda[sc->mtd_hw];
522 if (SRO(sc, mtd->mtd_vtxp, TXP_STATUS) == 0)
523 log(LOG_ERR, "%s: Tx - timeout\n",
524 device_get_nameunit(sc->sc_dev));
526 log(LOG_ERR, "%s: Tx - lost interrupt\n",
527 device_get_nameunit(sc->sc_dev));
528 temp = ifp->if_flags & IFF_UP;
530 ifp->if_flags |= temp;
535 * stuff packet into sonic (at splnet)
538 sonicput(sc, m0, mtd_next)
539 struct snc_softc *sc;
550 #ifdef whyonearthwouldyoudothis
551 if (NIC_GET(sc, SNCR_CR) & CR_TXP)
555 /* grab the replacement mtd */
556 mtdp = &sc->mtda[sc->mtd_free];
558 buff = mtdp->mtd_vbuf;
560 /* this packet goes to mtdnext fill in the TDA */
562 txp = mtdp->mtd_vtxp;
564 /* Write to the config word. Every (NTDA/2)+1 packets we set an intr */
565 if (sc->mtd_pint == 0) {
566 sc->mtd_pint = NTDA/2;
567 SWO(sc, txp, TXP_CONFIG, TCR_PINT);
570 SWO(sc, txp, TXP_CONFIG, 0);
573 for (m = m0; m; m = m->m_next) {
576 (*sc->sc_copytobuf)(sc, mtod(m, caddr_t), buff, len);
579 if (totlen >= TXBSIZE) {
580 panic("%s: sonicput: packet overflow",
581 device_get_nameunit(sc->sc_dev));
584 SWO(sc, txp, TXP_FRAGOFF + (0 * TXP_FRAGSIZE) + TXP_FPTRLO,
585 LOWER(mtdp->mtd_vbuf));
586 SWO(sc, txp, TXP_FRAGOFF + (0 * TXP_FRAGSIZE) + TXP_FPTRHI,
587 UPPER(mtdp->mtd_vbuf));
589 if (totlen < ETHERMIN + sizeof(struct ether_header)) {
590 int pad = ETHERMIN + sizeof(struct ether_header) - totlen;
591 (*sc->sc_zerobuf)(sc, mtdp->mtd_vbuf + totlen, pad);
592 totlen = ETHERMIN + sizeof(struct ether_header);
595 SWO(sc, txp, TXP_FRAGOFF + (0 * TXP_FRAGSIZE) + TXP_FSIZE,
597 SWO(sc, txp, TXP_FRAGCNT, 1);
598 SWO(sc, txp, TXP_PKTSIZE, totlen);
600 /* link onto the next mtd that will be used */
601 SWO(sc, txp, TXP_FRAGOFF + (1 * TXP_FRAGSIZE) + TXP_FPTRLO,
602 LOWER(sc->mtda[mtd_next].mtd_vtxp) | EOL);
605 * The previous txp.tlink currently contains a pointer to
606 * our txp | EOL. Want to clear the EOL, so write our
607 * pointer to the previous txp.
609 SWO(sc, sc->mtda[sc->mtd_prev].mtd_vtxp, sc->mtd_tlinko,
610 LOWER(mtdp->mtd_vtxp));
612 /* make sure chip is running */
614 NIC_PUT(sc, SNCR_CR, CR_TXP);
616 sc->sc_if.if_timer = 5; /* 5 seconds to watch for failing to transmit */
622 * These are called from sonicioctl() when /etc/ifconfig is run to set
623 * the address or switch the i/f on.
630 struct snc_softc *sc;
632 u_int32_t v_cda = sc->v_cda;
636 for (i = 0; i < MAXCAM; i++) {
637 camoffset = i * CDA_CAMDESC;
638 SWO(sc, v_cda, (camoffset + CDA_CAMEP), i);
639 SWO(sc, v_cda, (camoffset + CDA_CAMAP2), 0);
640 SWO(sc, v_cda, (camoffset + CDA_CAMAP1), 0);
641 SWO(sc, v_cda, (camoffset + CDA_CAMAP0), 0);
643 SWO(sc, v_cda, CDA_ENABLE, 0);
646 if ((sncdebug & SNC_SHOWCAMENT) != 0) {
653 camentry(sc, entry, ea)
656 struct snc_softc *sc;
658 u_int32_t v_cda = sc->v_cda;
659 int camoffset = entry * CDA_CAMDESC;
661 SWO(sc, v_cda, camoffset + CDA_CAMEP, entry);
662 SWO(sc, v_cda, camoffset + CDA_CAMAP2, (ea[5] << 8) | ea[4]);
663 SWO(sc, v_cda, camoffset + CDA_CAMAP1, (ea[3] << 8) | ea[2]);
664 SWO(sc, v_cda, camoffset + CDA_CAMAP0, (ea[1] << 8) | ea[0]);
665 SWO(sc, v_cda, CDA_ENABLE,
666 (SRO(sc, v_cda, CDA_ENABLE) | (1 << entry)));
671 struct snc_softc *sc;
673 struct ifmultiaddr *ifma;
682 /* Always load our own address first. */
683 camentry (sc, mcount, sc->sc_ethercom.ac_enaddr);
686 /* Assume we won't need allmulti bit. */
687 ifp->if_flags &= ~IFF_ALLMULTI;
689 /* Loop through multicast addresses */
690 for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
691 ifma = ifma->ifma_link.le_next) {
692 if (ifma->ifma_addr->sa_family != AF_LINK)
694 if (mcount == MAXCAM) {
695 ifp->if_flags |= IFF_ALLMULTI;
699 /* program the CAM with the specified entry */
701 LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
705 NIC_PUT(sc, SNCR_CDP, LOWER(sc->v_cda));
706 NIC_PUT(sc, SNCR_CDC, MAXCAM);
707 NIC_PUT(sc, SNCR_CR, CR_LCAM);
711 while ((NIC_GET(sc, SNCR_CR) & CR_LCAM) && timeout--)
715 panic("%s: CAM initialisation failed\n",
716 device_get_nameunit(sc->sc_dev));
719 while (((NIC_GET(sc, SNCR_ISR) & ISR_LCD) == 0) && timeout--)
722 if (NIC_GET(sc, SNCR_ISR) & ISR_LCD)
723 NIC_PUT(sc, SNCR_ISR, ISR_LCD);
725 device_printf(sc->sc_dev,
726 "CAM initialisation without interrupt\n");
732 struct snc_softc *sc;
736 printf("CAM entries:\n");
737 NIC_PUT(sc, SNCR_CR, CR_RST);
740 for (i = 0; i < 16; i++) {
741 ushort ap2, ap1, ap0;
742 NIC_PUT(sc, SNCR_CEP, i);
744 ap2 = NIC_GET(sc, SNCR_CAP2);
745 ap1 = NIC_GET(sc, SNCR_CAP1);
746 ap0 = NIC_GET(sc, SNCR_CAP0);
747 printf("%d: ap2=0x%x ap1=0x%x ap0=0x%x\n", i, ap2, ap1, ap0);
749 printf("CAM enable 0x%x\n", NIC_GET(sc, SNCR_CEP));
751 NIC_PUT(sc, SNCR_CR, 0);
758 struct snc_softc *sc;
763 for (i = 0; i < NTDA; i++) {
769 sc->mtd_prev = NTDA - 1;
771 sc->mtd_tlinko = TXP_FRAGOFF + 1*TXP_FRAGSIZE + TXP_FPTRLO;
772 sc->mtd_pint = NTDA/2;
774 NIC_PUT(sc, SNCR_UTDA, UPPER(sc->mtda[0].mtd_vtxp));
775 NIC_PUT(sc, SNCR_CTDA, LOWER(sc->mtda[0].mtd_vtxp));
780 struct snc_softc *sc;
783 u_int32_t vv_rda = 0;
786 /* link the RDA's together into a circular list */
787 for (i = 0; i < (sc->sc_nrda - 1); i++) {
788 v_rda = sc->v_rda + (i * RXPKT_SIZE(sc));
789 vv_rda = sc->v_rda + ((i+1) * RXPKT_SIZE(sc));
790 SWO(sc, v_rda, RXPKT_RLINK, LOWER(vv_rda));
791 SWO(sc, v_rda, RXPKT_INUSE, 1);
793 v_rda = sc->v_rda + ((sc->sc_nrda - 1) * RXPKT_SIZE(sc));
794 SWO(sc, v_rda, RXPKT_RLINK, LOWER(sc->v_rda) | EOL);
795 SWO(sc, v_rda, RXPKT_INUSE, 1);
797 /* mark end of receive descriptor list */
798 sc->sc_rdamark = sc->sc_nrda - 1;
802 NIC_PUT(sc, SNCR_URDA, UPPER(sc->v_rda));
803 NIC_PUT(sc, SNCR_CRDA, LOWER(sc->v_rda));
809 struct snc_softc *sc;
813 int bitmode = sc->bitmode;
816 NIC_PUT(sc, SNCR_EOBC, RBASIZE(sc) / 2 - 2);
818 NIC_PUT(sc, SNCR_EOBC, RBASIZE(sc) / 2 - 1);
820 NIC_PUT(sc, SNCR_URRA, UPPER(sc->v_rra[0]));
821 NIC_PUT(sc, SNCR_RSA, LOWER(sc->v_rra[0]));
822 /* rea must point just past the end of the rra space */
823 NIC_PUT(sc, SNCR_REA, LOWER(sc->v_rea));
824 NIC_PUT(sc, SNCR_RRP, LOWER(sc->v_rra[0]));
825 NIC_PUT(sc, SNCR_RSC, 0);
827 /* fill up SOME of the rra with buffers */
828 for (i = 0; i < NRBA; i++) {
829 v = SONIC_GETDMA(sc->rbuf[i]);
830 SWO(sc, sc->v_rra[i], RXRSRC_PTRHI, UPPER(v));
831 SWO(sc, sc->v_rra[i], RXRSRC_PTRLO, LOWER(v));
832 SWO(sc, sc->v_rra[i], RXRSRC_WCHI, UPPER(NBPG/2));
833 SWO(sc, sc->v_rra[i], RXRSRC_WCLO, LOWER(NBPG/2));
835 sc->sc_rramark = NRBA;
836 NIC_PUT(sc, SNCR_RWP, LOWER(sc->v_rra[sc->sc_rramark]));
844 struct snc_softc *sc = (struct snc_softc *)arg;
847 if (sc->sc_enabled == 0)
850 while ((isr = (NIC_GET(sc, SNCR_ISR) & ISR_ALL)) != 0) {
851 /* scrub the interrupts that we are going to service */
852 NIC_PUT(sc, SNCR_ISR, isr);
855 if (isr & (ISR_BR | ISR_LCD | ISR_TC))
856 device_printf(sc->sc_dev,
857 "unexpected interrupt status 0x%x\n",
860 if (isr & (ISR_TXDN | ISR_TXER | ISR_PINT))
866 if (isr & (ISR_HBL | ISR_RDE | ISR_RBE | ISR_RBAE | ISR_RFO)) {
869 * The repeater is not providing a heartbeat.
870 * In itself this isn't harmful, lots of the
871 * cheap repeater hubs don't supply a heartbeat.
872 * So ignore the lack of heartbeat. Its only
873 * if we can't detect a carrier that we have a
878 device_printf(sc->sc_dev,
879 "receive descriptors exhausted\n");
881 device_printf(sc->sc_dev,
882 "receive buffers exhausted\n");
884 device_printf(sc->sc_dev,
885 "receive buffer area exhausted\n");
887 device_printf(sc->sc_dev,
888 "receive FIFO overrun\n");
890 if (isr & (ISR_CRC | ISR_FAE | ISR_MP)) {
900 sncstart(&sc->sc_if);
904 rnd_add_uint32(&sc->rnd_source, isr);
911 * Transmit interrupt routine
915 struct snc_softc *sc;
919 unsigned short txp_status;
921 struct ifnet *ifp = &sc->sc_if;
925 if (mtd_hw == sc->mtd_free)
928 while (mtd_hw != sc->mtd_free) {
929 mtd = &sc->mtda[mtd_hw];
933 if (SRO(sc, txp, TXP_STATUS) == 0) {
934 break; /* it hasn't really gone yet */
938 if ((sncdebug & SNC_SHOWTXHDR) != 0)
940 struct ether_header eh;
942 (*sc->sc_copyfrombuf)(sc, &eh, mtd->mtd_vbuf, sizeof(eh));
943 device_printf(sc->sc_dev,
944 "xmit status=0x%x len=%d type=0x%x from %6D",
945 SRO(sc, txp, TXP_STATUS),
946 SRO(sc, txp, TXP_PKTSIZE),
947 htons(eh.ether_type),
948 eh.ether_shost, ":");
949 printf(" (to %6D)\n", eh.ether_dhost, ":");
951 #endif /* SNCDEBUG */
953 ifp->if_flags &= ~IFF_OACTIVE;
955 if (mtd->mtd_mbuf != 0) {
956 m_freem(mtd->mtd_mbuf);
959 if (++mtd_hw == NTDA) mtd_hw = 0;
961 txp_status = SRO(sc, txp, TXP_STATUS);
963 ifp->if_collisions += (txp_status & TCR_EXC) ? 16 :
964 ((txp_status & TCR_NC) >> 12);
966 if ((txp_status & TCR_PTX) == 0) {
968 device_printf(sc->sc_dev, "Tx packet status=0x%x\n",
971 /* XXX - DG This looks bogus */
972 if (mtd_hw != sc->mtd_free) {
973 printf("resubmitting remaining packets\n");
974 mtd = &sc->mtda[mtd_hw];
975 NIC_PUT(sc, SNCR_CTDA, LOWER(mtd->mtd_vtxp));
976 NIC_PUT(sc, SNCR_CR, CR_TXP);
988 * Receive interrupt routine
992 struct snc_softc *sc;
1001 rda = sc->v_rda + (sc->sc_rxmark * RXPKT_SIZE(sc));
1003 while (SRO(sc, rda, RXPKT_INUSE) == 0) {
1004 u_int status = SRO(sc, rda, RXPKT_STATUS);
1006 orra = RBASEQ(SRO(sc, rda, RXPKT_SEQNO)) & RRAMASK;
1007 rxpkt_ptr = SRO(sc, rda, RXPKT_PTRLO);
1009 * Do not trunc ether_header length.
1010 * Our sonic_read() and sonic_get() require it.
1012 len = SRO(sc, rda, RXPKT_BYTEC) - FCSSIZE;
1013 if (status & RCR_PRX) {
1014 /* XXX: Does PGOFSET require? */
1016 sc->rbuf[orra & RBAMASK] + (rxpkt_ptr & PGOFSET);
1017 if (sonic_read(sc, pkt, len))
1018 sc->sc_if.if_ipackets++;
1020 sc->sc_if.if_ierrors++;
1022 sc->sc_if.if_ierrors++;
1025 * give receive buffer area back to chip.
1027 * If this was the last packet in the RRA, give the RRA to
1029 * If sonic read didnt copy it out then we would have to
1031 * (dont bother add it back in again straight away)
1033 * Really, we're doing v_rra[rramark] = v_rra[orra] but
1034 * we have to use the macros because SONIC might be in
1035 * 16 or 32 bit mode.
1037 if (status & RCR_LPKT) {
1038 u_int32_t tmp1, tmp2;
1040 rramark = sc->sc_rramark;
1041 tmp1 = sc->v_rra[rramark];
1042 tmp2 = sc->v_rra[orra];
1043 SWO(sc, tmp1, RXRSRC_PTRLO,
1044 SRO(sc, tmp2, RXRSRC_PTRLO));
1045 SWO(sc, tmp1, RXRSRC_PTRHI,
1046 SRO(sc, tmp2, RXRSRC_PTRHI));
1047 SWO(sc, tmp1, RXRSRC_WCLO,
1048 SRO(sc, tmp2, RXRSRC_WCLO));
1049 SWO(sc, tmp1, RXRSRC_WCHI,
1050 SRO(sc, tmp2, RXRSRC_WCHI));
1052 /* zap old rra for fun */
1053 SWO(sc, tmp2, RXRSRC_WCHI, 0);
1054 SWO(sc, tmp2, RXRSRC_WCLO, 0);
1056 sc->sc_rramark = (++rramark) & RRAMASK;
1057 NIC_PUT(sc, SNCR_RWP, LOWER(sc->v_rra[rramark]));
1062 * give receive descriptor back to chip simple
1065 rdamark = sc->sc_rdamark;
1066 SWO(sc, rda, RXPKT_INUSE, 1);
1067 SWO(sc, rda, RXPKT_RLINK,
1068 SRO(sc, rda, RXPKT_RLINK) | EOL);
1069 SWO(sc, (sc->v_rda + (rdamark * RXPKT_SIZE(sc))), RXPKT_RLINK,
1070 SRO(sc, (sc->v_rda + (rdamark * RXPKT_SIZE(sc))),
1071 RXPKT_RLINK) & ~EOL);
1072 sc->sc_rdamark = sc->sc_rxmark;
1074 if (++sc->sc_rxmark >= sc->sc_nrda)
1076 rda = sc->v_rda + (sc->sc_rxmark * RXPKT_SIZE(sc));
1081 * sonic_read -- pull packet off interface and forward to
1082 * appropriate protocol handler
1085 sonic_read(sc, pkt, len)
1086 struct snc_softc *sc;
1090 struct ifnet *ifp = &sc->sc_if;
1091 struct ether_header *et;
1094 if (len <= sizeof(struct ether_header) ||
1095 len > ETHERMTU + sizeof(struct ether_header)) {
1096 device_printf(sc->sc_dev,
1097 "invalid packet length %d bytes\n", len);
1101 /* Pull packet off interface. */
1102 m = sonic_get(sc, pkt, len);
1107 /* We assume that the header fit entirely in one mbuf. */
1108 et = mtod(m, struct ether_header *);
1111 if ((sncdebug & SNC_SHOWRXHDR) != 0)
1113 device_printf(sc->sc_dev, "rcvd 0x%x len=%d type=0x%x from %6D",
1114 pkt, len, htons(et->ether_type),
1115 et->ether_shost, ":");
1116 printf(" (to %6D)\n", et->ether_dhost, ":");
1118 #endif /* SNCDEBUG */
1120 /* Pass the packet up, with the ether header sort-of removed. */
1121 m_adj(m, sizeof(struct ether_header));
1122 ether_input(ifp, et, m);
1128 * munge the received packet into an mbuf chain
1131 sonic_get(sc, pkt, datalen)
1132 struct snc_softc *sc;
1136 struct mbuf *m, *top, **mp;
1139 * Do not trunc ether_header length.
1140 * Our sonic_read() and sonic_get() require it.
1143 MGETHDR(m, M_DONTWAIT, MT_DATA);
1146 m->m_pkthdr.rcvif = &sc->sc_if;
1147 m->m_pkthdr.len = datalen;
1152 while (datalen > 0) {
1154 MGET(m, M_DONTWAIT, MT_DATA);
1161 if (datalen >= MINCLSIZE) {
1162 MCLGET(m, M_DONTWAIT);
1163 if ((m->m_flags & M_EXT) == 0) {
1164 if (top) m_freem(top);
1173 ALIGN(sizeof(struct ether_header)) -
1174 sizeof(struct ether_header);
1179 m->m_len = len = min(datalen, len);
1181 (*sc->sc_copyfrombuf)(sc, mtod(m, caddr_t), pkt, len);
1191 * Enable power on the interface.
1195 struct snc_softc *sc;
1199 device_printf(sc->sc_dev, "snc_enable()\n");
1200 #endif /* SNCDEBUG */
1202 if (sc->sc_enabled == 0 && sc->sc_enable != NULL) {
1203 if ((*sc->sc_enable)(sc) != 0) {
1204 device_printf(sc->sc_dev, "device enable failed\n");
1214 * Disable power on the interface.
1218 struct snc_softc *sc;
1222 device_printf(sc->sc_dev, "snc_disable()\n");
1223 #endif /* SNCDEBUG */
1225 if (sc->sc_enabled != 0 && sc->sc_disable != NULL) {
1226 (*sc->sc_disable)(sc);