16e78eb3fb
naming conflicts between bus attachments on ports that can have multiple instances of the LANCE. Changed struct ifnet to have a pointer to the softc of the underlying device and a printable "external name" (name + unit number), thus eliminating if_name and if_unit. Updated interface to (*if_watchdog)() and (*if_start)() to take a struct ifnet *, rather than a unit number.
1311 lines
29 KiB
C
1311 lines
29 KiB
C
/* $NetBSD: am7990.c,v 1.19 1996/05/07 01:38:35 thorpej Exp $ */
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/*-
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* Copyright (c) 1995 Charles M. Hannum. All rights reserved.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell and Rick Macklem.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)if_le.c 8.2 (Berkeley) 11/16/93
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*/
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#include "bpfilter.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/syslog.h>
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#include <sys/socket.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/ioctl.h>
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#include <sys/errno.h>
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#include <net/if.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#include <netinet/in_systm.h>
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#include <netinet/in_var.h>
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#include <netinet/ip.h>
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#endif
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#ifdef NS
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#include <netns/ns.h>
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#include <netns/ns_if.h>
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#endif
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#if defined(CCITT) && defined(LLC)
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#include <sys/socketvar.h>
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#include <netccitt/x25.h>
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#include <netccitt/pk.h>
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#include <netccitt/pk_var.h>
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#include <netccitt/pk_extern.h>
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#endif
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#if NBPFILTER > 0
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#include <net/bpf.h>
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#include <net/bpfdesc.h>
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#endif
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#include <dev/ic/am7990reg.h>
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#include <dev/ic/am7990var.h>
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#ifdef LEDEBUG
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void am7990_recv_print __P((struct am7990_softc *, int));
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void am7990_xmit_print __P((struct am7990_softc *, int));
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#endif
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integrate void am7990_rint __P((struct am7990_softc *));
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integrate void am7990_tint __P((struct am7990_softc *));
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integrate int am7990_put __P((struct am7990_softc *, int, struct mbuf *));
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integrate struct mbuf *am7990_get __P((struct am7990_softc *, int, int));
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integrate void am7990_read __P((struct am7990_softc *, int, int));
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hide void am7990_shutdown __P((void *));
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#define ifp (&sc->sc_arpcom.ac_if)
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#if 0 /* XXX what do we do about this?! --thorpej */
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static inline u_int16_t ether_cmp __P((void *, void *));
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/*
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* Compare two Ether/802 addresses for equality, inlined and
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* unrolled for speed. I'd love to have an inline assembler
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* version of this... XXX: Who wanted that? mycroft?
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* I wrote one, but the following is just as efficient.
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* This expands to 10 short m68k instructions! -gwr
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* Note: use this like bcmp()
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*/
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static inline u_short
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ether_cmp(one, two)
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void *one, *two;
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{
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register u_int16_t *a = (u_short *) one;
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register u_int16_t *b = (u_short *) two;
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register u_int16_t diff;
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diff = *a++ - *b++;
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diff |= *a++ - *b++;
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diff |= *a++ - *b++;
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return (diff);
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}
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#define ETHER_CMP ether_cmp
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#endif /* XXX */
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#ifndef ETHER_CMP
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#define ETHER_CMP(a, b) bcmp((a), (b), ETHER_ADDR_LEN)
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#endif
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/*
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* am7990 configuration driver. Attachments are provided by
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* machine-dependent driver front-ends.
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*/
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struct cfdriver le_cd = {
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NULL, "le", DV_IFNET
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};
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void
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am7990_config(sc)
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struct am7990_softc *sc;
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{
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int mem;
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/* Make sure the chip is stopped. */
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am7990_stop(sc);
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/* Initialize ifnet structure. */
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bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ);
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ifp->if_softc = sc;
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ifp->if_start = am7990_start;
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ifp->if_ioctl = am7990_ioctl;
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ifp->if_watchdog = am7990_watchdog;
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ifp->if_flags =
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IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST;
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#ifdef LANCE_REVC_BUG
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ifp->if_flags &= ~IFF_MULTICAST;
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#endif
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/* Attach the interface. */
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if_attach(ifp);
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ether_ifattach(ifp);
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#if NBPFILTER > 0
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bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header));
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#endif
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switch (sc->sc_memsize) {
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case 8192:
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sc->sc_nrbuf = 4;
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sc->sc_ntbuf = 1;
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break;
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case 16384:
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sc->sc_nrbuf = 8;
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sc->sc_ntbuf = 2;
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break;
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case 32768:
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sc->sc_nrbuf = 16;
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sc->sc_ntbuf = 4;
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break;
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case 65536:
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sc->sc_nrbuf = 32;
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sc->sc_ntbuf = 8;
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break;
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default:
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panic("am7990_config: weird memory size");
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}
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printf(": address %s\n", ether_sprintf(sc->sc_arpcom.ac_enaddr));
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printf("%s: %d receive buffers, %d transmit buffers\n",
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sc->sc_dev.dv_xname, sc->sc_nrbuf, sc->sc_ntbuf);
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sc->sc_sh = shutdownhook_establish(am7990_shutdown, sc);
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if (sc->sc_sh == NULL)
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panic("am7990_config: can't establish shutdownhook");
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mem = 0;
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sc->sc_initaddr = mem;
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mem += sizeof(struct leinit);
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sc->sc_rmdaddr = mem;
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mem += sizeof(struct lermd) * sc->sc_nrbuf;
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sc->sc_tmdaddr = mem;
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mem += sizeof(struct letmd) * sc->sc_ntbuf;
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sc->sc_rbufaddr = mem;
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mem += LEBLEN * sc->sc_nrbuf;
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sc->sc_tbufaddr = mem;
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mem += LEBLEN * sc->sc_ntbuf;
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#ifdef notyet
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if (mem > ...)
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panic(...);
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#endif
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}
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void
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am7990_reset(sc)
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struct am7990_softc *sc;
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{
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int s;
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s = splimp();
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am7990_init(sc);
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splx(s);
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}
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/*
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* Set up the initialization block and the descriptor rings.
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*/
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void
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am7990_meminit(sc)
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register struct am7990_softc *sc;
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{
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u_long a;
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int bix;
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struct leinit init;
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struct lermd rmd;
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struct letmd tmd;
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#if NBPFILTER > 0
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if (ifp->if_flags & IFF_PROMISC)
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init.init_mode = LE_MODE_NORMAL | LE_MODE_PROM;
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else
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#endif
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init.init_mode = LE_MODE_NORMAL;
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init.init_padr[0] =
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(sc->sc_arpcom.ac_enaddr[1] << 8) | sc->sc_arpcom.ac_enaddr[0];
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init.init_padr[1] =
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(sc->sc_arpcom.ac_enaddr[3] << 8) | sc->sc_arpcom.ac_enaddr[2];
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init.init_padr[2] =
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(sc->sc_arpcom.ac_enaddr[5] << 8) | sc->sc_arpcom.ac_enaddr[4];
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am7990_setladrf(&sc->sc_arpcom, init.init_ladrf);
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sc->sc_last_rd = 0;
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sc->sc_first_td = sc->sc_last_td = sc->sc_no_td = 0;
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a = sc->sc_addr + LE_RMDADDR(sc, 0);
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init.init_rdra = a;
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init.init_rlen = (a >> 16) | ((ffs(sc->sc_nrbuf) - 1) << 13);
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a = sc->sc_addr + LE_TMDADDR(sc, 0);
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init.init_tdra = a;
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init.init_tlen = (a >> 16) | ((ffs(sc->sc_ntbuf) - 1) << 13);
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(*sc->sc_copytodesc)(sc, &init, LE_INITADDR(sc), sizeof(init));
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/*
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* Set up receive ring descriptors.
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*/
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for (bix = 0; bix < sc->sc_nrbuf; bix++) {
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a = sc->sc_addr + LE_RBUFADDR(sc, bix);
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rmd.rmd0 = a;
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rmd.rmd1_hadr = a >> 16;
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rmd.rmd1_bits = LE_R1_OWN;
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rmd.rmd2 = -LEBLEN | LE_XMD2_ONES;
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rmd.rmd3 = 0;
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(*sc->sc_copytodesc)(sc, &rmd, LE_RMDADDR(sc, bix),
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sizeof(rmd));
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}
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/*
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* Set up transmit ring descriptors.
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*/
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for (bix = 0; bix < sc->sc_ntbuf; bix++) {
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a = sc->sc_addr + LE_TBUFADDR(sc, bix);
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tmd.tmd0 = a;
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tmd.tmd1_hadr = a >> 16;
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tmd.tmd1_bits = 0;
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tmd.tmd2 = 0 | LE_XMD2_ONES;
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tmd.tmd3 = 0;
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(*sc->sc_copytodesc)(sc, &tmd, LE_TMDADDR(sc, bix),
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sizeof(tmd));
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}
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}
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void
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am7990_stop(sc)
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struct am7990_softc *sc;
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{
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(*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_STOP);
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}
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|
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/*
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* Initialization of interface; set up initialization block
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* and transmit/receive descriptor rings.
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*/
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void
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am7990_init(sc)
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register struct am7990_softc *sc;
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{
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register int timo;
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u_long a;
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(*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_STOP);
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DELAY(100);
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/* Set the correct byte swapping mode, etc. */
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(*sc->sc_wrcsr)(sc, LE_CSR3, sc->sc_conf3);
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/* Set up LANCE init block. */
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am7990_meminit(sc);
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/* Give LANCE the physical address of its init block. */
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a = sc->sc_addr + LE_INITADDR(sc);
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(*sc->sc_wrcsr)(sc, LE_CSR1, a);
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(*sc->sc_wrcsr)(sc, LE_CSR2, a >> 16);
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/* Try to initialize the LANCE. */
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DELAY(100);
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(*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INIT);
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|
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/* Wait for initialization to finish. */
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for (timo = 100000; timo; timo--)
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if ((*sc->sc_rdcsr)(sc, LE_CSR0) & LE_C0_IDON)
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break;
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if ((*sc->sc_rdcsr)(sc, LE_CSR0) & LE_C0_IDON) {
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/* Start the LANCE. */
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(*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA | LE_C0_STRT |
|
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LE_C0_IDON);
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ifp->if_flags |= IFF_RUNNING;
|
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ifp->if_flags &= ~IFF_OACTIVE;
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ifp->if_timer = 0;
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am7990_start(ifp);
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} else
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printf("%s: card failed to initialize\n", sc->sc_dev.dv_xname);
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if (sc->sc_hwinit)
|
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(*sc->sc_hwinit)(sc);
|
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}
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|
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/*
|
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* Routine to copy from mbuf chain to transmit buffer in
|
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* network buffer memory.
|
|
*/
|
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integrate int
|
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am7990_put(sc, boff, m)
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struct am7990_softc *sc;
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int boff;
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register struct mbuf *m;
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{
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register struct mbuf *n;
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register int len, tlen = 0;
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for (; m; m = n) {
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len = m->m_len;
|
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if (len == 0) {
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MFREE(m, n);
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continue;
|
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}
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(*sc->sc_copytobuf)(sc, mtod(m, caddr_t), boff, len);
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boff += len;
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tlen += len;
|
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MFREE(m, n);
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}
|
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if (tlen < LEMINSIZE) {
|
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(*sc->sc_zerobuf)(sc, boff, LEMINSIZE - tlen);
|
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tlen = LEMINSIZE;
|
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}
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return (tlen);
|
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}
|
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|
|
/*
|
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* Pull data off an interface.
|
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* Len is length of data, with local net header stripped.
|
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* We copy the data into mbufs. When full cluster sized units are present
|
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* we copy into clusters.
|
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*/
|
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integrate struct mbuf *
|
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am7990_get(sc, boff, totlen)
|
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struct am7990_softc *sc;
|
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int boff, totlen;
|
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{
|
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register struct mbuf *m;
|
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struct mbuf *top, **mp;
|
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int len, pad;
|
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|
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MGETHDR(m, M_DONTWAIT, MT_DATA);
|
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if (m == 0)
|
|
return (0);
|
|
m->m_pkthdr.rcvif = ifp;
|
|
m->m_pkthdr.len = totlen;
|
|
pad = ALIGN(sizeof(struct ether_header)) - sizeof(struct ether_header);
|
|
m->m_data += pad;
|
|
len = MHLEN - pad;
|
|
top = 0;
|
|
mp = ⊤
|
|
|
|
while (totlen > 0) {
|
|
if (top) {
|
|
MGET(m, M_DONTWAIT, MT_DATA);
|
|
if (m == 0) {
|
|
m_freem(top);
|
|
return 0;
|
|
}
|
|
len = MLEN;
|
|
}
|
|
if (top && totlen >= MINCLSIZE) {
|
|
MCLGET(m, M_DONTWAIT);
|
|
if (m->m_flags & M_EXT)
|
|
len = MCLBYTES;
|
|
}
|
|
m->m_len = len = min(totlen, len);
|
|
(*sc->sc_copyfrombuf)(sc, mtod(m, caddr_t), boff, len);
|
|
boff += len;
|
|
totlen -= len;
|
|
*mp = m;
|
|
mp = &m->m_next;
|
|
}
|
|
|
|
return (top);
|
|
}
|
|
|
|
/*
|
|
* Pass a packet to the higher levels.
|
|
*/
|
|
integrate void
|
|
am7990_read(sc, boff, len)
|
|
register struct am7990_softc *sc;
|
|
int boff, len;
|
|
{
|
|
struct mbuf *m;
|
|
struct ether_header *eh;
|
|
|
|
if (len <= sizeof(struct ether_header) ||
|
|
len > ETHERMTU + sizeof(struct ether_header)) {
|
|
#ifdef LEDEBUG
|
|
printf("%s: invalid packet size %d; dropping\n",
|
|
sc->sc_dev.dv_xname, len);
|
|
#endif
|
|
ifp->if_ierrors++;
|
|
return;
|
|
}
|
|
|
|
/* Pull packet off interface. */
|
|
m = am7990_get(sc, boff, len);
|
|
if (m == 0) {
|
|
ifp->if_ierrors++;
|
|
return;
|
|
}
|
|
|
|
ifp->if_ipackets++;
|
|
|
|
/* We assume that the header fit entirely in one mbuf. */
|
|
eh = mtod(m, struct ether_header *);
|
|
|
|
#if NBPFILTER > 0
|
|
/*
|
|
* Check if there's a BPF listener on this interface.
|
|
* If so, hand off the raw packet to BPF.
|
|
*/
|
|
if (ifp->if_bpf) {
|
|
bpf_mtap(ifp->if_bpf, m);
|
|
|
|
#ifndef LANCE_REVC_BUG
|
|
/*
|
|
* Note that the interface cannot be in promiscuous mode if
|
|
* there are no BPF listeners. And if we are in promiscuous
|
|
* mode, we have to check if this packet is really ours.
|
|
*/
|
|
if ((ifp->if_flags & IFF_PROMISC) != 0 &&
|
|
(eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */
|
|
ETHER_CMP(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) {
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#ifdef LANCE_REVC_BUG
|
|
/*
|
|
* The old LANCE (Rev. C) chips have a bug which causes
|
|
* garbage to be inserted in front of the received packet.
|
|
* The work-around is to ignore packets with an invalid
|
|
* destination address (garbage will usually not match).
|
|
* Of course, this precludes multicast support...
|
|
*/
|
|
if (ETHER_CMP(eh->ether_dhost, sc->sc_arpcom.ac_enaddr) &&
|
|
ETHER_CMP(eh->ether_dhost, etherbroadcastaddr)) {
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
/* Pass the packet up, with the ether header sort-of removed. */
|
|
m_adj(m, sizeof(struct ether_header));
|
|
ether_input(ifp, eh, m);
|
|
}
|
|
|
|
integrate void
|
|
am7990_rint(sc)
|
|
struct am7990_softc *sc;
|
|
{
|
|
register int bix;
|
|
int rp;
|
|
struct lermd rmd;
|
|
|
|
bix = sc->sc_last_rd;
|
|
|
|
/* Process all buffers with valid data. */
|
|
for (;;) {
|
|
rp = LE_RMDADDR(sc, bix);
|
|
(*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd));
|
|
|
|
if (rmd.rmd1_bits & LE_R1_OWN)
|
|
break;
|
|
|
|
if (rmd.rmd1_bits & LE_R1_ERR) {
|
|
if (rmd.rmd1_bits & LE_R1_ENP) {
|
|
#ifdef LEDEBUG
|
|
if ((rmd.rmd1_bits & LE_R1_OFLO) == 0) {
|
|
if (rmd.rmd1_bits & LE_R1_FRAM)
|
|
printf("%s: framing error\n",
|
|
sc->sc_dev.dv_xname);
|
|
if (rmd.rmd1_bits & LE_R1_CRC)
|
|
printf("%s: crc mismatch\n",
|
|
sc->sc_dev.dv_xname);
|
|
}
|
|
#endif
|
|
} else {
|
|
if (rmd.rmd1_bits & LE_R1_OFLO)
|
|
printf("%s: overflow\n",
|
|
sc->sc_dev.dv_xname);
|
|
}
|
|
if (rmd.rmd1_bits & LE_R1_BUFF)
|
|
printf("%s: receive buffer error\n",
|
|
sc->sc_dev.dv_xname);
|
|
ifp->if_ierrors++;
|
|
} else if ((rmd.rmd1_bits & (LE_R1_STP | LE_R1_ENP)) !=
|
|
(LE_R1_STP | LE_R1_ENP)) {
|
|
printf("%s: dropping chained buffer\n",
|
|
sc->sc_dev.dv_xname);
|
|
ifp->if_ierrors++;
|
|
} else {
|
|
#ifdef LEDEBUG
|
|
if (sc->sc_debug)
|
|
am7990_recv_print(sc, sc->sc_last_rd);
|
|
#endif
|
|
am7990_read(sc, LE_RBUFADDR(sc, bix),
|
|
(int)rmd.rmd3 - 4);
|
|
}
|
|
|
|
rmd.rmd1_bits = LE_R1_OWN;
|
|
rmd.rmd2 = -LEBLEN | LE_XMD2_ONES;
|
|
rmd.rmd3 = 0;
|
|
(*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd));
|
|
|
|
#ifdef LEDEBUG
|
|
if (sc->sc_debug)
|
|
printf("sc->sc_last_rd = %x, rmd: "
|
|
"ladr %04x, hadr %02x, flags %02x, "
|
|
"bcnt %04x, mcnt %04x\n",
|
|
sc->sc_last_rd,
|
|
rmd.rmd0, rmd.rmd1_hadr, rmd.rmd1_bits,
|
|
rmd.rmd2, rmd.rmd3);
|
|
#endif
|
|
|
|
if (++bix == sc->sc_nrbuf)
|
|
bix = 0;
|
|
}
|
|
|
|
sc->sc_last_rd = bix;
|
|
}
|
|
|
|
integrate void
|
|
am7990_tint(sc)
|
|
register struct am7990_softc *sc;
|
|
{
|
|
register int bix;
|
|
struct letmd tmd;
|
|
|
|
bix = sc->sc_first_td;
|
|
|
|
for (;;) {
|
|
if (sc->sc_no_td <= 0)
|
|
break;
|
|
|
|
#ifdef LEDEBUG
|
|
if (sc->sc_debug)
|
|
printf("trans tmd: "
|
|
"ladr %04x, hadr %02x, flags %02x, "
|
|
"bcnt %04x, mcnt %04x\n",
|
|
tmd.tmd0, tmd.tmd1_hadr, tmd.tmd1_bits,
|
|
tmd.tmd2, tmd.tmd3);
|
|
#endif
|
|
|
|
(*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix),
|
|
sizeof(tmd));
|
|
|
|
if (tmd.tmd1_bits & LE_T1_OWN)
|
|
break;
|
|
|
|
ifp->if_flags &= ~IFF_OACTIVE;
|
|
|
|
if (tmd.tmd1_bits & LE_T1_ERR) {
|
|
if (tmd.tmd3 & LE_T3_BUFF)
|
|
printf("%s: transmit buffer error\n",
|
|
sc->sc_dev.dv_xname);
|
|
else if (tmd.tmd3 & LE_T3_UFLO)
|
|
printf("%s: underflow\n", sc->sc_dev.dv_xname);
|
|
if (tmd.tmd3 & (LE_T3_BUFF | LE_T3_UFLO)) {
|
|
am7990_reset(sc);
|
|
return;
|
|
}
|
|
if (tmd.tmd3 & LE_T3_LCAR)
|
|
printf("%s: lost carrier\n",
|
|
sc->sc_dev.dv_xname);
|
|
if (tmd.tmd3 & LE_T3_LCOL)
|
|
ifp->if_collisions++;
|
|
if (tmd.tmd3 & LE_T3_RTRY) {
|
|
printf("%s: excessive collisions, tdr %d\n",
|
|
sc->sc_dev.dv_xname,
|
|
tmd.tmd3 & LE_T3_TDR_MASK);
|
|
ifp->if_collisions += 16;
|
|
}
|
|
ifp->if_oerrors++;
|
|
} else {
|
|
if (tmd.tmd1_bits & LE_T1_ONE)
|
|
ifp->if_collisions++;
|
|
else if (tmd.tmd1_bits & LE_T1_MORE)
|
|
/* Real number is unknown. */
|
|
ifp->if_collisions += 2;
|
|
ifp->if_opackets++;
|
|
}
|
|
|
|
if (++bix == sc->sc_ntbuf)
|
|
bix = 0;
|
|
|
|
--sc->sc_no_td;
|
|
}
|
|
|
|
sc->sc_first_td = bix;
|
|
|
|
am7990_start(ifp);
|
|
|
|
if (sc->sc_no_td == 0)
|
|
ifp->if_timer = 0;
|
|
}
|
|
|
|
/*
|
|
* Controller interrupt.
|
|
*/
|
|
int
|
|
am7990_intr(arg)
|
|
register void *arg;
|
|
{
|
|
register struct am7990_softc *sc = arg;
|
|
register u_int16_t isr;
|
|
|
|
isr = (*sc->sc_rdcsr)(sc, LE_CSR0);
|
|
#ifdef LEDEBUG
|
|
if (sc->sc_debug)
|
|
printf("%s: am7990_intr entering with isr=%04x\n",
|
|
sc->sc_dev.dv_xname, isr);
|
|
#endif
|
|
if ((isr & LE_C0_INTR) == 0)
|
|
return (0);
|
|
|
|
(*sc->sc_wrcsr)(sc, LE_CSR0,
|
|
isr & (LE_C0_INEA | LE_C0_BABL | LE_C0_MISS | LE_C0_MERR |
|
|
LE_C0_RINT | LE_C0_TINT | LE_C0_IDON));
|
|
if (isr & LE_C0_ERR) {
|
|
if (isr & LE_C0_BABL) {
|
|
#ifdef LEDEBUG
|
|
printf("%s: babble\n", sc->sc_dev.dv_xname);
|
|
#endif
|
|
ifp->if_oerrors++;
|
|
}
|
|
#if 0
|
|
if (isr & LE_C0_CERR) {
|
|
printf("%s: collision error\n", sc->sc_dev.dv_xname);
|
|
ifp->if_collisions++;
|
|
}
|
|
#endif
|
|
if (isr & LE_C0_MISS) {
|
|
#ifdef LEDEBUG
|
|
printf("%s: missed packet\n", sc->sc_dev.dv_xname);
|
|
#endif
|
|
ifp->if_ierrors++;
|
|
}
|
|
if (isr & LE_C0_MERR) {
|
|
printf("%s: memory error\n", sc->sc_dev.dv_xname);
|
|
am7990_reset(sc);
|
|
return (1);
|
|
}
|
|
}
|
|
|
|
if ((isr & LE_C0_RXON) == 0) {
|
|
printf("%s: receiver disabled\n", sc->sc_dev.dv_xname);
|
|
ifp->if_ierrors++;
|
|
am7990_reset(sc);
|
|
return (1);
|
|
}
|
|
if ((isr & LE_C0_TXON) == 0) {
|
|
printf("%s: transmitter disabled\n", sc->sc_dev.dv_xname);
|
|
ifp->if_oerrors++;
|
|
am7990_reset(sc);
|
|
return (1);
|
|
}
|
|
|
|
if (isr & LE_C0_RINT)
|
|
am7990_rint(sc);
|
|
if (isr & LE_C0_TINT)
|
|
am7990_tint(sc);
|
|
|
|
return (1);
|
|
}
|
|
|
|
#undef ifp
|
|
|
|
void
|
|
am7990_watchdog(ifp)
|
|
struct ifnet *ifp;
|
|
{
|
|
struct am7990_softc *sc = ifp->if_softc;
|
|
|
|
log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname);
|
|
++ifp->if_oerrors;
|
|
|
|
am7990_reset(sc);
|
|
}
|
|
|
|
/*
|
|
* Setup output on interface.
|
|
* Get another datagram to send off of the interface queue, and map it to the
|
|
* interface before starting the output.
|
|
* Called only at splimp or interrupt level.
|
|
*/
|
|
void
|
|
am7990_start(ifp)
|
|
register struct ifnet *ifp;
|
|
{
|
|
register struct am7990_softc *sc = ifp->if_softc;
|
|
register int bix;
|
|
register struct mbuf *m;
|
|
struct letmd tmd;
|
|
int rp;
|
|
int len;
|
|
|
|
if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
|
|
return;
|
|
|
|
bix = sc->sc_last_td;
|
|
|
|
for (;;) {
|
|
rp = LE_TMDADDR(sc, bix);
|
|
(*sc->sc_copyfromdesc)(sc, &tmd, rp, sizeof(tmd));
|
|
|
|
if (tmd.tmd1_bits & LE_T1_OWN) {
|
|
ifp->if_flags |= IFF_OACTIVE;
|
|
printf("missing buffer, no_td = %d, last_td = %d\n",
|
|
sc->sc_no_td, sc->sc_last_td);
|
|
}
|
|
|
|
IF_DEQUEUE(&ifp->if_snd, m);
|
|
if (m == 0)
|
|
break;
|
|
|
|
#if NBPFILTER > 0
|
|
/*
|
|
* If BPF is listening on this interface, let it see the packet
|
|
* before we commit it to the wire.
|
|
*/
|
|
if (ifp->if_bpf)
|
|
bpf_mtap(ifp->if_bpf, m);
|
|
#endif
|
|
|
|
/*
|
|
* Copy the mbuf chain into the transmit buffer.
|
|
*/
|
|
len = am7990_put(sc, LE_TBUFADDR(sc, bix), m);
|
|
|
|
#ifdef LEDEBUG
|
|
if (len > ETHERMTU + sizeof(struct ether_header))
|
|
printf("packet length %d\n", len);
|
|
#endif
|
|
|
|
ifp->if_timer = 5;
|
|
|
|
/*
|
|
* Init transmit registers, and set transmit start flag.
|
|
*/
|
|
tmd.tmd1_bits = LE_T1_OWN | LE_T1_STP | LE_T1_ENP;
|
|
tmd.tmd2 = -len | LE_XMD2_ONES;
|
|
tmd.tmd3 = 0;
|
|
|
|
(*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd));
|
|
|
|
#ifdef LEDEBUG
|
|
if (sc->sc_debug)
|
|
am7990_xmit_print(sc, sc->sc_last_td);
|
|
#endif
|
|
|
|
(*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA | LE_C0_TDMD);
|
|
|
|
if (++bix == sc->sc_ntbuf)
|
|
bix = 0;
|
|
|
|
if (++sc->sc_no_td == sc->sc_ntbuf) {
|
|
ifp->if_flags |= IFF_OACTIVE;
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
sc->sc_last_td = bix;
|
|
}
|
|
|
|
/*
|
|
* Process an ioctl request.
|
|
*/
|
|
int
|
|
am7990_ioctl(ifp, cmd, data)
|
|
register struct ifnet *ifp;
|
|
u_long cmd;
|
|
caddr_t data;
|
|
{
|
|
register struct am7990_softc *sc = ifp->if_softc;
|
|
struct ifaddr *ifa = (struct ifaddr *)data;
|
|
struct ifreq *ifr = (struct ifreq *)data;
|
|
int s, error = 0;
|
|
|
|
s = splimp();
|
|
|
|
switch (cmd) {
|
|
|
|
case SIOCSIFADDR:
|
|
ifp->if_flags |= IFF_UP;
|
|
|
|
switch (ifa->ifa_addr->sa_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
am7990_init(sc);
|
|
arp_ifinit(&sc->sc_arpcom, ifa);
|
|
break;
|
|
#endif
|
|
#ifdef NS
|
|
case AF_NS:
|
|
{
|
|
register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr;
|
|
|
|
if (ns_nullhost(*ina))
|
|
ina->x_host =
|
|
*(union ns_host *)(sc->sc_arpcom.ac_enaddr);
|
|
else
|
|
bcopy(ina->x_host.c_host,
|
|
sc->sc_arpcom.ac_enaddr,
|
|
sizeof(sc->sc_arpcom.ac_enaddr));
|
|
/* Set new address. */
|
|
am7990_init(sc);
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
am7990_init(sc);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
#if defined(CCITT) && defined(LLC)
|
|
case SIOCSIFCONF_X25:
|
|
ifp->if_flags |= IFF_UP;
|
|
ifa->ifa_rtrequest = cons_rtrequest; /* XXX */
|
|
error = x25_llcglue(PRC_IFUP, ifa->ifa_addr);
|
|
if (error == 0)
|
|
am7990_init(sc);
|
|
break;
|
|
#endif /* CCITT && LLC */
|
|
|
|
case SIOCSIFFLAGS:
|
|
if ((ifp->if_flags & IFF_UP) == 0 &&
|
|
(ifp->if_flags & IFF_RUNNING) != 0) {
|
|
/*
|
|
* If interface is marked down and it is running, then
|
|
* stop it.
|
|
*/
|
|
am7990_stop(sc);
|
|
ifp->if_flags &= ~IFF_RUNNING;
|
|
} else if ((ifp->if_flags & IFF_UP) != 0 &&
|
|
(ifp->if_flags & IFF_RUNNING) == 0) {
|
|
/*
|
|
* If interface is marked up and it is stopped, then
|
|
* start it.
|
|
*/
|
|
am7990_init(sc);
|
|
} else {
|
|
/*
|
|
* Reset the interface to pick up changes in any other
|
|
* flags that affect hardware registers.
|
|
*/
|
|
/*am7990_stop(sc);*/
|
|
am7990_init(sc);
|
|
}
|
|
#ifdef LEDEBUG
|
|
if (ifp->if_flags & IFF_DEBUG)
|
|
sc->sc_debug = 1;
|
|
else
|
|
sc->sc_debug = 0;
|
|
#endif
|
|
break;
|
|
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
error = (cmd == SIOCADDMULTI) ?
|
|
ether_addmulti(ifr, &sc->sc_arpcom) :
|
|
ether_delmulti(ifr, &sc->sc_arpcom);
|
|
|
|
if (error == ENETRESET) {
|
|
/*
|
|
* Multicast list has changed; set the hardware filter
|
|
* accordingly.
|
|
*/
|
|
am7990_reset(sc);
|
|
error = 0;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
|
|
splx(s);
|
|
return (error);
|
|
}
|
|
|
|
hide void
|
|
am7990_shutdown(arg)
|
|
void *arg;
|
|
{
|
|
|
|
am7990_stop((struct am7990_softc *)arg);
|
|
}
|
|
|
|
#ifdef LEDEBUG
|
|
void
|
|
am7990_recv_print(sc, no)
|
|
struct am7990_softc *sc;
|
|
int no;
|
|
{
|
|
struct lermd rmd;
|
|
u_int16_t len;
|
|
struct ether_header eh;
|
|
|
|
(*sc->sc_copyfromdesc)(sc, &rmd, LE_RMDADDR(sc, no), sizeof(rmd));
|
|
len = rmd.rmd3;
|
|
printf("%s: receive buffer %d, len = %d\n", sc->sc_dev.dv_xname, no,
|
|
len);
|
|
printf("%s: status %04x\n", sc->sc_dev.dv_xname,
|
|
(*sc->sc_rdcsr)(sc, LE_CSR0));
|
|
printf("%s: ladr %04x, hadr %02x, flags %02x, bcnt %04x, mcnt %04x\n",
|
|
sc->sc_dev.dv_xname,
|
|
rmd.rmd0, rmd.rmd1_hadr, rmd.rmd1_bits, rmd.rmd2, rmd.rmd3);
|
|
if (len >= sizeof(eh)) {
|
|
(*sc->sc_copyfrombuf)(sc, &eh, LE_RBUFADDR(sc, no), sizeof(eh));
|
|
printf("%s: dst %s", sc->sc_dev.dv_xname,
|
|
ether_sprintf(eh.ether_dhost));
|
|
printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost),
|
|
ntohs(eh.ether_type));
|
|
}
|
|
}
|
|
|
|
void
|
|
am7990_xmit_print(sc, no)
|
|
struct am7990_softc *sc;
|
|
int no;
|
|
{
|
|
struct letmd tmd;
|
|
u_int16_t len;
|
|
struct ether_header eh;
|
|
|
|
(*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, no), sizeof(tmd));
|
|
len = -tmd.tmd2;
|
|
printf("%s: transmit buffer %d, len = %d\n", sc->sc_dev.dv_xname, no,
|
|
len);
|
|
printf("%s: status %04x\n", sc->sc_dev.dv_xname,
|
|
(*sc->sc_rdcsr)(sc, LE_CSR0));
|
|
printf("%s: ladr %04x, hadr %02x, flags %02x, bcnt %04x, mcnt %04x\n",
|
|
sc->sc_dev.dv_xname,
|
|
tmd.tmd0, tmd.tmd1_hadr, tmd.tmd1_bits, tmd.tmd2, tmd.tmd3);
|
|
if (len >= sizeof(eh)) {
|
|
(*sc->sc_copyfrombuf)(sc, &eh, LE_TBUFADDR(sc, no), sizeof(eh));
|
|
printf("%s: dst %s", sc->sc_dev.dv_xname,
|
|
ether_sprintf(eh.ether_dhost));
|
|
printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost),
|
|
ntohs(eh.ether_type));
|
|
}
|
|
}
|
|
#endif /* LEDEBUG */
|
|
|
|
/*
|
|
* Set up the logical address filter.
|
|
*/
|
|
void
|
|
am7990_setladrf(ac, af)
|
|
struct arpcom *ac;
|
|
u_int16_t *af;
|
|
{
|
|
struct ifnet *ifp = &ac->ac_if;
|
|
struct ether_multi *enm;
|
|
register u_char *cp, c;
|
|
register u_int32_t crc;
|
|
register int i, len;
|
|
struct ether_multistep step;
|
|
|
|
/*
|
|
* Set up multicast address filter by passing all multicast addresses
|
|
* through a crc generator, and then using the high order 6 bits as an
|
|
* index into the 64 bit logical address filter. The high order bit
|
|
* selects the word, while the rest of the bits select the bit within
|
|
* the word.
|
|
*/
|
|
|
|
if (ifp->if_flags & IFF_PROMISC)
|
|
goto allmulti;
|
|
|
|
af[0] = af[1] = af[2] = af[3] = 0x0000;
|
|
ETHER_FIRST_MULTI(step, ac, enm);
|
|
while (enm != NULL) {
|
|
if (ETHER_CMP(enm->enm_addrlo, enm->enm_addrhi)) {
|
|
/*
|
|
* We must listen to a range of multicast addresses.
|
|
* For now, just accept all multicasts, rather than
|
|
* trying to set only those filter bits needed to match
|
|
* the range. (At this time, the only use of address
|
|
* ranges is for IP multicast routing, for which the
|
|
* range is big enough to require all bits set.)
|
|
*/
|
|
goto allmulti;
|
|
}
|
|
|
|
cp = enm->enm_addrlo;
|
|
crc = 0xffffffff;
|
|
for (len = sizeof(enm->enm_addrlo); --len >= 0;) {
|
|
c = *cp++;
|
|
for (i = 8; --i >= 0;) {
|
|
if ((crc & 0x01) ^ (c & 0x01)) {
|
|
crc >>= 1;
|
|
crc ^= 0xedb88320;
|
|
} else
|
|
crc >>= 1;
|
|
c >>= 1;
|
|
}
|
|
}
|
|
/* Just want the 6 most significant bits. */
|
|
crc >>= 26;
|
|
|
|
/* Set the corresponding bit in the filter. */
|
|
af[crc >> 4] |= 1 << (crc & 0xf);
|
|
|
|
ETHER_NEXT_MULTI(step, enm);
|
|
}
|
|
ifp->if_flags &= ~IFF_ALLMULTI;
|
|
return;
|
|
|
|
allmulti:
|
|
ifp->if_flags |= IFF_ALLMULTI;
|
|
af[0] = af[1] = af[2] = af[3] = 0xffff;
|
|
}
|
|
|
|
|
|
/*
|
|
* Routines for accessing the transmit and receive buffers.
|
|
* The various CPU and adapter configurations supported by this
|
|
* driver require three different access methods for buffers
|
|
* and descriptors:
|
|
* (1) contig (contiguous data; no padding),
|
|
* (2) gap2 (two bytes of data followed by two bytes of padding),
|
|
* (3) gap16 (16 bytes of data followed by 16 bytes of padding).
|
|
*/
|
|
|
|
/*
|
|
* contig: contiguous data with no padding.
|
|
*
|
|
* Buffers may have any alignment.
|
|
*/
|
|
|
|
void
|
|
am7990_copytobuf_contig(sc, from, boff, len)
|
|
struct am7990_softc *sc;
|
|
void *from;
|
|
int boff, len;
|
|
{
|
|
volatile caddr_t buf = sc->sc_mem;
|
|
|
|
/*
|
|
* Just call bcopy() to do the work.
|
|
*/
|
|
bcopy(from, buf + boff, len);
|
|
}
|
|
|
|
void
|
|
am7990_copyfrombuf_contig(sc, to, boff, len)
|
|
struct am7990_softc *sc;
|
|
void *to;
|
|
int boff, len;
|
|
{
|
|
volatile caddr_t buf = sc->sc_mem;
|
|
|
|
/*
|
|
* Just call bcopy() to do the work.
|
|
*/
|
|
bcopy(buf + boff, to, len);
|
|
}
|
|
|
|
void
|
|
am7990_zerobuf_contig(sc, boff, len)
|
|
struct am7990_softc *sc;
|
|
int boff, len;
|
|
{
|
|
volatile caddr_t buf = sc->sc_mem;
|
|
|
|
/*
|
|
* Just let bzero() do the work
|
|
*/
|
|
bzero(buf + boff, len);
|
|
}
|
|
|
|
#if 0
|
|
/*
|
|
* Examples only; duplicate these and tweak (if necessary) in
|
|
* machine-specific front-ends.
|
|
*/
|
|
|
|
/*
|
|
* gap2: two bytes of data followed by two bytes of pad.
|
|
*
|
|
* Buffers must be 4-byte aligned. The code doesn't worry about
|
|
* doing an extra byte.
|
|
*/
|
|
|
|
void
|
|
am7990_copytobuf_gap2(sc, fromv, boff, len)
|
|
struct am7990_softc *sc;
|
|
void *fromv;
|
|
int boff;
|
|
register int len;
|
|
{
|
|
volatile caddr_t buf = sc->sc_mem;
|
|
register caddr_t from = fromv;
|
|
register volatile u_int16_t *bptr;
|
|
|
|
if (boff & 0x1) {
|
|
/* handle unaligned first byte */
|
|
bptr = ((volatile u_int16_t *)buf) + (boff - 1);
|
|
*bptr = (*from++ << 8) | (*bptr & 0xff);
|
|
bptr += 2;
|
|
len--;
|
|
} else
|
|
bptr = ((volatile u_int16_t *)buf) + boff;
|
|
while (len > 1) {
|
|
*bptr = (from[1] << 8) | (from[0] & 0xff);
|
|
bptr += 2;
|
|
from += 2;
|
|
len -= 2;
|
|
}
|
|
if (len == 1)
|
|
*bptr = (u_int16_t)*from;
|
|
}
|
|
|
|
void
|
|
am7990_copyfrombuf_gap2(sc, tov, boff, len)
|
|
struct am7990_softc *sc;
|
|
void *tov;
|
|
int boff, len;
|
|
{
|
|
volatile caddr_t buf = sc->sc_mem;
|
|
register caddr_t to = tov;
|
|
register volatile u_int16_t *bptr;
|
|
register u_int16_t tmp;
|
|
|
|
if (boff & 0x1) {
|
|
/* handle unaligned first byte */
|
|
bptr = ((volatile u_int16_t *)buf) + (boff - 1);
|
|
*to++ = (*bptr >> 8) & 0xff;
|
|
bptr += 2;
|
|
len--;
|
|
} else
|
|
bptr = ((volatile u_int16_t *)buf) + boff;
|
|
while (len > 1) {
|
|
tmp = *bptr;
|
|
*to++ = tmp & 0xff;
|
|
*to++ = (tmp >> 8) & 0xff;
|
|
bptr += 2;
|
|
len -= 2;
|
|
}
|
|
if (len == 1)
|
|
*to = *bptr & 0xff;
|
|
}
|
|
|
|
void
|
|
am7990_zerobuf_gap2(sc, boff, len)
|
|
struct am7990_softc *sc;
|
|
int boff, len;
|
|
{
|
|
volatile caddr_t buf = sc->sc_mem;
|
|
register volatile u_int16_t *bptr;
|
|
|
|
if ((unsigned)boff & 0x1) {
|
|
bptr = ((volatile u_int16_t *)buf) + (boff - 1);
|
|
*bptr &= 0xff;
|
|
bptr += 2;
|
|
len--;
|
|
} else
|
|
bptr = ((volatile u_int16_t *)buf) + boff;
|
|
while (len > 0) {
|
|
*bptr = 0;
|
|
bptr += 2;
|
|
len -= 2;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* gap16: 16 bytes of data followed by 16 bytes of pad.
|
|
*
|
|
* Buffers must be 32-byte aligned.
|
|
*/
|
|
|
|
void
|
|
am7990_copytobuf_gap16(sc, fromv, boff, len)
|
|
struct am7990_softc *sc;
|
|
void *fromv;
|
|
int boff;
|
|
register int len;
|
|
{
|
|
volatile caddr_t buf = sc->sc_mem;
|
|
register caddr_t from = fromv;
|
|
register caddr_t bptr;
|
|
register int xfer;
|
|
|
|
bptr = buf + ((boff << 1) & ~0x1f);
|
|
boff &= 0xf;
|
|
xfer = min(len, 16 - boff);
|
|
while (len > 0) {
|
|
bcopy(from, bptr + boff, xfer);
|
|
from += xfer;
|
|
bptr += 32;
|
|
boff = 0;
|
|
len -= xfer;
|
|
xfer = min(len, 16);
|
|
}
|
|
}
|
|
|
|
void
|
|
am7990_copyfrombuf_gap16(sc, tov, boff, len)
|
|
struct am7990_softc *sc;
|
|
void *tov;
|
|
int boff, len;
|
|
{
|
|
volatile caddr_t buf = sc->sc_mem;
|
|
register caddr_t to = tov;
|
|
register caddr_t bptr;
|
|
register int xfer;
|
|
|
|
bptr = buf + ((boff << 1) & ~0x1f);
|
|
boff &= 0xf;
|
|
xfer = min(len, 16 - boff);
|
|
while (len > 0) {
|
|
bcopy(bptr + boff, to, xfer);
|
|
to += xfer;
|
|
bptr += 32;
|
|
boff = 0;
|
|
len -= xfer;
|
|
xfer = min(len, 16);
|
|
}
|
|
}
|
|
|
|
void
|
|
am7990_zerobuf_gap16(sc, boff, len)
|
|
struct am7990_softc *sc;
|
|
int boff, len;
|
|
{
|
|
volatile caddr_t buf = sc->sc_mem;
|
|
register caddr_t bptr;
|
|
register int xfer;
|
|
|
|
bptr = buf + ((boff << 1) & ~0x1f);
|
|
boff &= 0xf;
|
|
xfer = min(len, 16 - boff);
|
|
while (len > 0) {
|
|
bzero(bptr + boff, xfer);
|
|
bptr += 32;
|
|
boff = 0;
|
|
len -= xfer;
|
|
xfer = min(len, 16);
|
|
}
|
|
}
|
|
#endif /* Example only */
|