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 1.13 2005/02/20 02:54:21 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/ifq_var.h>
81 #include <net/if_arp.h>
82 #include <net/if_dl.h>
83 #include <net/if_types.h>
84 #include <net/if_media.h>
87 #include <netinet/in.h>
88 #include <netinet/in_systm.h>
89 #include <netinet/in_var.h>
90 #include <netinet/ip.h>
94 #include <net/bpfdesc.h>
97 #include <machine/bus.h>
98 #include "dp83932reg.h"
99 #include "dp83932var.h"
101 hide void sncwatchdog (struct ifnet *);
102 hide void sncinit (void *);
103 hide int sncstop (struct snc_softc *sc);
104 hide int sncioctl (struct ifnet *ifp, u_long cmd, caddr_t data,
106 hide void sncstart (struct ifnet *ifp);
107 hide void sncreset (struct snc_softc *sc);
109 hide void caminitialise (struct snc_softc *);
110 hide void camentry (struct snc_softc *, int, u_char *ea);
111 hide void camprogram (struct snc_softc *);
112 hide void initialise_tda (struct snc_softc *);
113 hide void initialise_rda (struct snc_softc *);
114 hide void initialise_rra (struct snc_softc *);
116 hide void camdump (struct snc_softc *sc);
119 hide void sonictxint (struct snc_softc *);
120 hide void sonicrxint (struct snc_softc *);
122 hide u_int sonicput (struct snc_softc *sc, struct mbuf *m0,
124 hide int sonic_read (struct snc_softc *, u_int32_t, int);
125 hide struct mbuf *sonic_get (struct snc_softc *,
128 int snc_enable (struct snc_softc *);
129 void snc_disable (struct snc_softc *);
131 int snc_mediachange (struct ifnet *);
132 void snc_mediastatus (struct ifnet *, struct ifmediareq *);
136 struct cfdriver snc_cd = {
137 NULL, "snc", DV_IFNET
146 #define assert(e) ((void)0)
147 #define _assert(e) ((void)0)
149 #define _assert(e) assert(e)
151 #define assert(e) ((e) ? (void)0 : __assert("snc ", __FILE__, __LINE__, #e))
153 #define assert(e) ((e) ? (void)0 : __assert("snc "__FILE__, __LINE__, "e"))
158 #define SNC_SHOWTXHDR 0x01 /* show tx ether_header */
159 #define SNC_SHOWRXHDR 0x02 /* show rx ether_header */
160 #define SNC_SHOWCAMENT 0x04 /* show CAM entry */
161 #endif /* SNCDEBUG */
166 sncconfig(sc, media, nmedia, defmedia, eaddr)
167 struct snc_softc *sc;
168 int *media, nmedia, defmedia;
171 struct ifnet *ifp = &sc->sc_if;
175 if ((sncdebug & SNC_SHOWCAMENT) != 0) {
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_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 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
197 ifq_set_ready(&ifp->if_snd);
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 m = ifq_poll(&ifp->if_snd);
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 there is nothing in the o/p queue, and there is room in
371 * the Tx ring, then send the packet directly. Otherwise append
372 * it to the o/p queue.
374 if ((sonicput(sc, m, mtd_next)) == 0)
376 m = ifq_dequeue(&ifp->if_snd);
380 sc->mtd_prev = sc->mtd_free;
381 sc->mtd_free = mtd_next;
383 ifp->if_opackets++; /* # of pkts */
385 /* Jump back for possibly more punishment. */
390 * reset and restart the SONIC. Called in case of fatal
391 * hardware/software errors.
395 struct snc_softc *sc;
405 struct snc_softc *sc = xsc;
409 if (sc->sc_if.if_flags & IFF_RUNNING)
410 /* already running */
415 NIC_PUT(sc, SNCR_CR, CR_RST); /* DCR only accessable in reset mode! */
418 NIC_PUT(sc, SNCR_DCR, (sc->sncr_dcr |
419 (sc->bitmode ? DCR_DW32 : DCR_DW16)));
420 NIC_PUT(sc, SNCR_DCR2, sc->sncr_dcr2);
422 s_rcr = RCR_BRD | RCR_LBNONE;
423 if (sc->sc_if.if_flags & IFF_PROMISC)
425 if (sc->sc_if.if_flags & IFF_ALLMULTI)
427 NIC_PUT(sc, SNCR_RCR, s_rcr);
429 NIC_PUT(sc, SNCR_IMR, (IMR_PRXEN | IMR_PTXEN | IMR_TXEREN | IMR_LCDEN));
431 /* clear pending interrupts */
432 NIC_PUT(sc, SNCR_ISR, ISR_ALL);
434 /* clear tally counters */
435 NIC_PUT(sc, SNCR_CRCT, -1);
436 NIC_PUT(sc, SNCR_FAET, -1);
437 NIC_PUT(sc, SNCR_MPT, -1);
443 /* enable the chip */
444 NIC_PUT(sc, SNCR_CR, 0);
447 /* program the CAM */
450 /* get it to read resource descriptors */
451 NIC_PUT(sc, SNCR_CR, CR_RRRA);
453 while ((NIC_GET(sc, SNCR_CR)) & CR_RRRA)
457 NIC_PUT(sc, SNCR_CR, CR_RXEN);
460 /* flag interface as "running" */
461 sc->sc_if.if_flags |= IFF_RUNNING;
462 sc->sc_if.if_flags &= ~IFF_OACTIVE;
469 * close down an interface and free its buffers
470 * Called on final close of device, or if sncinit() fails
475 struct snc_softc *sc;
478 int s = splhardnet();
480 /* stick chip in reset */
481 NIC_PUT(sc, SNCR_CR, CR_RST);
484 /* free all receive buffers (currently static so nothing to do) */
486 /* free all pending transmit mbufs */
487 while (sc->mtd_hw != sc->mtd_free) {
488 mtd = &sc->mtda[sc->mtd_hw];
490 m_freem(mtd->mtd_mbuf);
491 if (++sc->mtd_hw == NTDA) sc->mtd_hw = 0;
494 sc->sc_if.if_timer = 0;
495 sc->sc_if.if_flags &= ~(IFF_RUNNING | IFF_UP);
502 * Called if any Tx packets remain unsent after 5 seconds,
503 * In all cases we just reset the chip, and any retransmission
504 * will be handled by higher level protocol timeouts.
510 struct snc_softc *sc = ifp->if_softc;
514 if (sc->mtd_hw != sc->mtd_free) {
515 /* something still pending for transmit */
516 mtd = &sc->mtda[sc->mtd_hw];
517 if (SRO(sc, mtd->mtd_vtxp, TXP_STATUS) == 0)
518 log(LOG_ERR, "%s: Tx - timeout\n",
519 device_get_nameunit(sc->sc_dev));
521 log(LOG_ERR, "%s: Tx - lost interrupt\n",
522 device_get_nameunit(sc->sc_dev));
523 temp = ifp->if_flags & IFF_UP;
525 ifp->if_flags |= temp;
530 * stuff packet into sonic (at splnet)
533 sonicput(sc, m0, mtd_next)
534 struct snc_softc *sc;
545 #ifdef whyonearthwouldyoudothis
546 if (NIC_GET(sc, SNCR_CR) & CR_TXP)
550 /* grab the replacement mtd */
551 mtdp = &sc->mtda[sc->mtd_free];
553 buff = mtdp->mtd_vbuf;
555 /* this packet goes to mtdnext fill in the TDA */
557 txp = mtdp->mtd_vtxp;
559 /* Write to the config word. Every (NTDA/2)+1 packets we set an intr */
560 if (sc->mtd_pint == 0) {
561 sc->mtd_pint = NTDA/2;
562 SWO(sc, txp, TXP_CONFIG, TCR_PINT);
565 SWO(sc, txp, TXP_CONFIG, 0);
568 for (m = m0; m; m = m->m_next) {
571 (*sc->sc_copytobuf)(sc, mtod(m, caddr_t), buff, len);
574 if (totlen >= TXBSIZE) {
575 panic("%s: sonicput: packet overflow",
576 device_get_nameunit(sc->sc_dev));
579 SWO(sc, txp, TXP_FRAGOFF + (0 * TXP_FRAGSIZE) + TXP_FPTRLO,
580 LOWER(mtdp->mtd_vbuf));
581 SWO(sc, txp, TXP_FRAGOFF + (0 * TXP_FRAGSIZE) + TXP_FPTRHI,
582 UPPER(mtdp->mtd_vbuf));
584 if (totlen < ETHERMIN + sizeof(struct ether_header)) {
585 int pad = ETHERMIN + sizeof(struct ether_header) - totlen;
586 (*sc->sc_zerobuf)(sc, mtdp->mtd_vbuf + totlen, pad);
587 totlen = ETHERMIN + sizeof(struct ether_header);
590 SWO(sc, txp, TXP_FRAGOFF + (0 * TXP_FRAGSIZE) + TXP_FSIZE,
592 SWO(sc, txp, TXP_FRAGCNT, 1);
593 SWO(sc, txp, TXP_PKTSIZE, totlen);
595 /* link onto the next mtd that will be used */
596 SWO(sc, txp, TXP_FRAGOFF + (1 * TXP_FRAGSIZE) + TXP_FPTRLO,
597 LOWER(sc->mtda[mtd_next].mtd_vtxp) | EOL);
600 * The previous txp.tlink currently contains a pointer to
601 * our txp | EOL. Want to clear the EOL, so write our
602 * pointer to the previous txp.
604 SWO(sc, sc->mtda[sc->mtd_prev].mtd_vtxp, sc->mtd_tlinko,
605 LOWER(mtdp->mtd_vtxp));
607 /* make sure chip is running */
609 NIC_PUT(sc, SNCR_CR, CR_TXP);
611 sc->sc_if.if_timer = 5; /* 5 seconds to watch for failing to transmit */
617 * These are called from sonicioctl() when /etc/ifconfig is run to set
618 * the address or switch the i/f on.
625 struct snc_softc *sc;
627 u_int32_t v_cda = sc->v_cda;
631 for (i = 0; i < MAXCAM; i++) {
632 camoffset = i * CDA_CAMDESC;
633 SWO(sc, v_cda, (camoffset + CDA_CAMEP), i);
634 SWO(sc, v_cda, (camoffset + CDA_CAMAP2), 0);
635 SWO(sc, v_cda, (camoffset + CDA_CAMAP1), 0);
636 SWO(sc, v_cda, (camoffset + CDA_CAMAP0), 0);
638 SWO(sc, v_cda, CDA_ENABLE, 0);
641 if ((sncdebug & SNC_SHOWCAMENT) != 0) {
648 camentry(sc, entry, ea)
651 struct snc_softc *sc;
653 u_int32_t v_cda = sc->v_cda;
654 int camoffset = entry * CDA_CAMDESC;
656 SWO(sc, v_cda, camoffset + CDA_CAMEP, entry);
657 SWO(sc, v_cda, camoffset + CDA_CAMAP2, (ea[5] << 8) | ea[4]);
658 SWO(sc, v_cda, camoffset + CDA_CAMAP1, (ea[3] << 8) | ea[2]);
659 SWO(sc, v_cda, camoffset + CDA_CAMAP0, (ea[1] << 8) | ea[0]);
660 SWO(sc, v_cda, CDA_ENABLE,
661 (SRO(sc, v_cda, CDA_ENABLE) | (1 << entry)));
666 struct snc_softc *sc;
668 struct ifmultiaddr *ifma;
677 /* Always load our own address first. */
678 camentry (sc, mcount, sc->sc_ethercom.ac_enaddr);
681 /* Assume we won't need allmulti bit. */
682 ifp->if_flags &= ~IFF_ALLMULTI;
684 /* Loop through multicast addresses */
685 for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
686 ifma = ifma->ifma_link.le_next) {
687 if (ifma->ifma_addr->sa_family != AF_LINK)
689 if (mcount == MAXCAM) {
690 ifp->if_flags |= IFF_ALLMULTI;
694 /* program the CAM with the specified entry */
696 LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
700 NIC_PUT(sc, SNCR_CDP, LOWER(sc->v_cda));
701 NIC_PUT(sc, SNCR_CDC, MAXCAM);
702 NIC_PUT(sc, SNCR_CR, CR_LCAM);
706 while ((NIC_GET(sc, SNCR_CR) & CR_LCAM) && timeout--)
710 panic("%s: CAM initialisation failed\n",
711 device_get_nameunit(sc->sc_dev));
714 while (((NIC_GET(sc, SNCR_ISR) & ISR_LCD) == 0) && timeout--)
717 if (NIC_GET(sc, SNCR_ISR) & ISR_LCD)
718 NIC_PUT(sc, SNCR_ISR, ISR_LCD);
720 device_printf(sc->sc_dev,
721 "CAM initialisation without interrupt\n");
727 struct snc_softc *sc;
731 printf("CAM entries:\n");
732 NIC_PUT(sc, SNCR_CR, CR_RST);
735 for (i = 0; i < 16; i++) {
736 ushort ap2, ap1, ap0;
737 NIC_PUT(sc, SNCR_CEP, i);
739 ap2 = NIC_GET(sc, SNCR_CAP2);
740 ap1 = NIC_GET(sc, SNCR_CAP1);
741 ap0 = NIC_GET(sc, SNCR_CAP0);
742 printf("%d: ap2=0x%x ap1=0x%x ap0=0x%x\n", i, ap2, ap1, ap0);
744 printf("CAM enable 0x%x\n", NIC_GET(sc, SNCR_CEP));
746 NIC_PUT(sc, SNCR_CR, 0);
753 struct snc_softc *sc;
758 for (i = 0; i < NTDA; i++) {
764 sc->mtd_prev = NTDA - 1;
766 sc->mtd_tlinko = TXP_FRAGOFF + 1*TXP_FRAGSIZE + TXP_FPTRLO;
767 sc->mtd_pint = NTDA/2;
769 NIC_PUT(sc, SNCR_UTDA, UPPER(sc->mtda[0].mtd_vtxp));
770 NIC_PUT(sc, SNCR_CTDA, LOWER(sc->mtda[0].mtd_vtxp));
775 struct snc_softc *sc;
778 u_int32_t vv_rda = 0;
781 /* link the RDA's together into a circular list */
782 for (i = 0; i < (sc->sc_nrda - 1); i++) {
783 v_rda = sc->v_rda + (i * RXPKT_SIZE(sc));
784 vv_rda = sc->v_rda + ((i+1) * RXPKT_SIZE(sc));
785 SWO(sc, v_rda, RXPKT_RLINK, LOWER(vv_rda));
786 SWO(sc, v_rda, RXPKT_INUSE, 1);
788 v_rda = sc->v_rda + ((sc->sc_nrda - 1) * RXPKT_SIZE(sc));
789 SWO(sc, v_rda, RXPKT_RLINK, LOWER(sc->v_rda) | EOL);
790 SWO(sc, v_rda, RXPKT_INUSE, 1);
792 /* mark end of receive descriptor list */
793 sc->sc_rdamark = sc->sc_nrda - 1;
797 NIC_PUT(sc, SNCR_URDA, UPPER(sc->v_rda));
798 NIC_PUT(sc, SNCR_CRDA, LOWER(sc->v_rda));
804 struct snc_softc *sc;
808 int bitmode = sc->bitmode;
811 NIC_PUT(sc, SNCR_EOBC, RBASIZE(sc) / 2 - 2);
813 NIC_PUT(sc, SNCR_EOBC, RBASIZE(sc) / 2 - 1);
815 NIC_PUT(sc, SNCR_URRA, UPPER(sc->v_rra[0]));
816 NIC_PUT(sc, SNCR_RSA, LOWER(sc->v_rra[0]));
817 /* rea must point just past the end of the rra space */
818 NIC_PUT(sc, SNCR_REA, LOWER(sc->v_rea));
819 NIC_PUT(sc, SNCR_RRP, LOWER(sc->v_rra[0]));
820 NIC_PUT(sc, SNCR_RSC, 0);
822 /* fill up SOME of the rra with buffers */
823 for (i = 0; i < NRBA; i++) {
824 v = SONIC_GETDMA(sc->rbuf[i]);
825 SWO(sc, sc->v_rra[i], RXRSRC_PTRHI, UPPER(v));
826 SWO(sc, sc->v_rra[i], RXRSRC_PTRLO, LOWER(v));
827 SWO(sc, sc->v_rra[i], RXRSRC_WCHI, UPPER(NBPG/2));
828 SWO(sc, sc->v_rra[i], RXRSRC_WCLO, LOWER(NBPG/2));
830 sc->sc_rramark = NRBA;
831 NIC_PUT(sc, SNCR_RWP, LOWER(sc->v_rra[sc->sc_rramark]));
839 struct snc_softc *sc = (struct snc_softc *)arg;
842 if (sc->sc_enabled == 0)
845 while ((isr = (NIC_GET(sc, SNCR_ISR) & ISR_ALL)) != 0) {
846 /* scrub the interrupts that we are going to service */
847 NIC_PUT(sc, SNCR_ISR, isr);
850 if (isr & (ISR_BR | ISR_LCD | ISR_TC))
851 device_printf(sc->sc_dev,
852 "unexpected interrupt status 0x%x\n",
855 if (isr & (ISR_TXDN | ISR_TXER | ISR_PINT))
861 if (isr & (ISR_HBL | ISR_RDE | ISR_RBE | ISR_RBAE | ISR_RFO)) {
864 * The repeater is not providing a heartbeat.
865 * In itself this isn't harmful, lots of the
866 * cheap repeater hubs don't supply a heartbeat.
867 * So ignore the lack of heartbeat. Its only
868 * if we can't detect a carrier that we have a
873 device_printf(sc->sc_dev,
874 "receive descriptors exhausted\n");
876 device_printf(sc->sc_dev,
877 "receive buffers exhausted\n");
879 device_printf(sc->sc_dev,
880 "receive buffer area exhausted\n");
882 device_printf(sc->sc_dev,
883 "receive FIFO overrun\n");
885 if (isr & (ISR_CRC | ISR_FAE | ISR_MP)) {
895 sncstart(&sc->sc_if);
899 rnd_add_uint32(&sc->rnd_source, isr);
906 * Transmit interrupt routine
910 struct snc_softc *sc;
914 unsigned short txp_status;
916 struct ifnet *ifp = &sc->sc_if;
920 if (mtd_hw == sc->mtd_free)
923 while (mtd_hw != sc->mtd_free) {
924 mtd = &sc->mtda[mtd_hw];
928 if (SRO(sc, txp, TXP_STATUS) == 0) {
929 break; /* it hasn't really gone yet */
933 if ((sncdebug & SNC_SHOWTXHDR) != 0)
935 struct ether_header eh;
937 (*sc->sc_copyfrombuf)(sc, &eh, mtd->mtd_vbuf, sizeof(eh));
938 device_printf(sc->sc_dev,
939 "xmit status=0x%x len=%d type=0x%x from %6D",
940 SRO(sc, txp, TXP_STATUS),
941 SRO(sc, txp, TXP_PKTSIZE),
942 htons(eh.ether_type),
943 eh.ether_shost, ":");
944 printf(" (to %6D)\n", eh.ether_dhost, ":");
946 #endif /* SNCDEBUG */
948 ifp->if_flags &= ~IFF_OACTIVE;
950 if (mtd->mtd_mbuf != 0) {
951 m_freem(mtd->mtd_mbuf);
954 if (++mtd_hw == NTDA) mtd_hw = 0;
956 txp_status = SRO(sc, txp, TXP_STATUS);
958 ifp->if_collisions += (txp_status & TCR_EXC) ? 16 :
959 ((txp_status & TCR_NC) >> 12);
961 if ((txp_status & TCR_PTX) == 0) {
963 device_printf(sc->sc_dev, "Tx packet status=0x%x\n",
966 /* XXX - DG This looks bogus */
967 if (mtd_hw != sc->mtd_free) {
968 printf("resubmitting remaining packets\n");
969 mtd = &sc->mtda[mtd_hw];
970 NIC_PUT(sc, SNCR_CTDA, LOWER(mtd->mtd_vtxp));
971 NIC_PUT(sc, SNCR_CR, CR_TXP);
983 * Receive interrupt routine
987 struct snc_softc *sc;
996 rda = sc->v_rda + (sc->sc_rxmark * RXPKT_SIZE(sc));
998 while (SRO(sc, rda, RXPKT_INUSE) == 0) {
999 u_int status = SRO(sc, rda, RXPKT_STATUS);
1001 orra = RBASEQ(SRO(sc, rda, RXPKT_SEQNO)) & RRAMASK;
1002 rxpkt_ptr = SRO(sc, rda, RXPKT_PTRLO);
1004 * Do not trunc ether_header length.
1005 * Our sonic_read() and sonic_get() require it.
1007 len = SRO(sc, rda, RXPKT_BYTEC) - FCSSIZE;
1008 if (status & RCR_PRX) {
1009 /* XXX: Does PGOFSET require? */
1011 sc->rbuf[orra & RBAMASK] + (rxpkt_ptr & PGOFSET);
1012 if (sonic_read(sc, pkt, len))
1013 sc->sc_if.if_ipackets++;
1015 sc->sc_if.if_ierrors++;
1017 sc->sc_if.if_ierrors++;
1020 * give receive buffer area back to chip.
1022 * If this was the last packet in the RRA, give the RRA to
1024 * If sonic read didnt copy it out then we would have to
1026 * (dont bother add it back in again straight away)
1028 * Really, we're doing v_rra[rramark] = v_rra[orra] but
1029 * we have to use the macros because SONIC might be in
1030 * 16 or 32 bit mode.
1032 if (status & RCR_LPKT) {
1033 u_int32_t tmp1, tmp2;
1035 rramark = sc->sc_rramark;
1036 tmp1 = sc->v_rra[rramark];
1037 tmp2 = sc->v_rra[orra];
1038 SWO(sc, tmp1, RXRSRC_PTRLO,
1039 SRO(sc, tmp2, RXRSRC_PTRLO));
1040 SWO(sc, tmp1, RXRSRC_PTRHI,
1041 SRO(sc, tmp2, RXRSRC_PTRHI));
1042 SWO(sc, tmp1, RXRSRC_WCLO,
1043 SRO(sc, tmp2, RXRSRC_WCLO));
1044 SWO(sc, tmp1, RXRSRC_WCHI,
1045 SRO(sc, tmp2, RXRSRC_WCHI));
1047 /* zap old rra for fun */
1048 SWO(sc, tmp2, RXRSRC_WCHI, 0);
1049 SWO(sc, tmp2, RXRSRC_WCLO, 0);
1051 sc->sc_rramark = (++rramark) & RRAMASK;
1052 NIC_PUT(sc, SNCR_RWP, LOWER(sc->v_rra[rramark]));
1057 * give receive descriptor back to chip simple
1060 rdamark = sc->sc_rdamark;
1061 SWO(sc, rda, RXPKT_INUSE, 1);
1062 SWO(sc, rda, RXPKT_RLINK,
1063 SRO(sc, rda, RXPKT_RLINK) | EOL);
1064 SWO(sc, (sc->v_rda + (rdamark * RXPKT_SIZE(sc))), RXPKT_RLINK,
1065 SRO(sc, (sc->v_rda + (rdamark * RXPKT_SIZE(sc))),
1066 RXPKT_RLINK) & ~EOL);
1067 sc->sc_rdamark = sc->sc_rxmark;
1069 if (++sc->sc_rxmark >= sc->sc_nrda)
1071 rda = sc->v_rda + (sc->sc_rxmark * RXPKT_SIZE(sc));
1076 * sonic_read -- pull packet off interface and forward to
1077 * appropriate protocol handler
1080 sonic_read(sc, pkt, len)
1081 struct snc_softc *sc;
1085 struct ifnet *ifp = &sc->sc_if;
1088 if (len <= sizeof(struct ether_header) ||
1089 len > ETHERMTU + sizeof(struct ether_header)) {
1090 device_printf(sc->sc_dev,
1091 "invalid packet length %d bytes\n", len);
1095 /* Pull packet off interface. */
1096 m = sonic_get(sc, pkt, len);
1101 (*ifp->if_input)(ifp, m);
1107 * munge the received packet into an mbuf chain
1110 sonic_get(sc, pkt, datalen)
1111 struct snc_softc *sc;
1115 struct mbuf *m, *top, **mp;
1118 * Do not trunc ether_header length.
1119 * Our sonic_read() and sonic_get() require it.
1122 MGETHDR(m, MB_DONTWAIT, MT_DATA);
1125 m->m_pkthdr.rcvif = &sc->sc_if;
1126 m->m_pkthdr.len = datalen;
1131 while (datalen > 0) {
1133 MGET(m, MB_DONTWAIT, MT_DATA);
1140 if (datalen >= MINCLSIZE) {
1141 MCLGET(m, MB_DONTWAIT);
1142 if ((m->m_flags & M_EXT) == 0) {
1143 if (top) m_freem(top);
1152 ALIGN(sizeof(struct ether_header)) -
1153 sizeof(struct ether_header);
1158 m->m_len = len = min(datalen, len);
1160 (*sc->sc_copyfrombuf)(sc, mtod(m, caddr_t), pkt, len);
1170 * Enable power on the interface.
1174 struct snc_softc *sc;
1178 device_printf(sc->sc_dev, "snc_enable()\n");
1179 #endif /* SNCDEBUG */
1181 if (sc->sc_enabled == 0 && sc->sc_enable != NULL) {
1182 if ((*sc->sc_enable)(sc) != 0) {
1183 device_printf(sc->sc_dev, "device enable failed\n");
1193 * Disable power on the interface.
1197 struct snc_softc *sc;
1201 device_printf(sc->sc_dev, "snc_disable()\n");
1202 #endif /* SNCDEBUG */
1204 if (sc->sc_enabled != 0 && sc->sc_disable != NULL) {
1205 (*sc->sc_disable)(sc);