612 lines
15 KiB
C
612 lines
15 KiB
C
/* $NetBSD: am79900.c,v 1.12 2003/08/07 16:30:58 agc Exp $ */
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/*-
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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. 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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/*-
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* Copyright (c) 1998
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* Matthias Drochner. All rights reserved.
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* Copyright (c) 1997 Jason R. Thorpe. All rights reserved.
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* Copyright (c) 1995 Charles M. Hannum. 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 <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: am79900.c,v 1.12 2003/08/07 16:30:58 agc Exp $");
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#include "bpfilter.h"
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#include "rnd.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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#if NRND > 0
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#include <sys/rnd.h>
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#endif
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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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/lancereg.h>
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#include <dev/ic/lancevar.h>
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#include <dev/ic/am79900reg.h>
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#include <dev/ic/am79900var.h>
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void am79900_meminit __P((struct lance_softc *));
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void am79900_start __P((struct ifnet *));
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#if defined(_KERNEL_OPT)
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#include "opt_ddb.h"
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#endif
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#ifdef DDB
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#define integrate
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#define hide
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#else
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#define integrate static __inline
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#define hide static
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#endif
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integrate void am79900_rint __P((struct lance_softc *));
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integrate void am79900_tint __P((struct lance_softc *));
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#ifdef LEDEBUG
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void am79900_recv_print __P((struct lance_softc *, int));
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void am79900_xmit_print __P((struct lance_softc *, int));
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#endif
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#define ifp (&sc->sc_ethercom.ec_if)
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void
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am79900_config(sc)
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struct am79900_softc *sc;
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{
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int mem, i;
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sc->lsc.sc_meminit = am79900_meminit;
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sc->lsc.sc_start = am79900_start;
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lance_config(&sc->lsc);
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mem = 0;
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sc->lsc.sc_initaddr = mem;
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mem += sizeof(struct leinit);
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sc->lsc.sc_rmdaddr = mem;
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mem += sizeof(struct lermd) * sc->lsc.sc_nrbuf;
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sc->lsc.sc_tmdaddr = mem;
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mem += sizeof(struct letmd) * sc->lsc.sc_ntbuf;
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for (i = 0; i < sc->lsc.sc_nrbuf; i++, mem += LEBLEN)
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sc->lsc.sc_rbufaddr[i] = mem;
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for (i = 0; i < sc->lsc.sc_ntbuf; i++, mem += LEBLEN)
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sc->lsc.sc_tbufaddr[i] = mem;
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if (mem > sc->lsc.sc_memsize)
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panic("%s: memsize", sc->lsc.sc_dev.dv_xname);
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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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am79900_meminit(sc)
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struct lance_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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u_int8_t *myaddr;
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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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if (sc->sc_initmodemedia == 1)
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init.init_mode |= LE_MODE_PSEL0;
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init.init_mode |= ((ffs(sc->sc_ntbuf) - 1) << 28)
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| ((ffs(sc->sc_nrbuf) - 1) << 20);
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/*
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* Update our private copy of the Ethernet address.
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* We NEED the copy so we can ensure its alignment!
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*/
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memcpy(sc->sc_enaddr, LLADDR(ifp->if_sadl), ETHER_ADDR_LEN);
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myaddr = sc->sc_enaddr;
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init.init_padr[0] = myaddr[0] | (myaddr[1] << 8)
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| (myaddr[2] << 16) | (myaddr[3] << 24);
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init.init_padr[1] = myaddr[4] | (myaddr[5] << 8);
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lance_setladrf(&sc->sc_ethercom, 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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a = sc->sc_addr + LE_TMDADDR(sc, 0);
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init.init_tdra = a;
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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 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff);
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rmd.rmd2 = 0;
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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 = LE_T1_ONES;
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tmd.tmd2 = 0;
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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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integrate void
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am79900_rint(sc)
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struct lance_softc *sc;
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{
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int bix;
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int rp;
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struct lermd rmd;
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bix = sc->sc_last_rd;
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/* Process all buffers with valid data. */
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for (;;) {
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rp = LE_RMDADDR(sc, bix);
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(*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd));
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if (rmd.rmd1 & LE_R1_OWN)
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break;
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if (rmd.rmd1 & LE_R1_ERR) {
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if (rmd.rmd1 & LE_R1_ENP) {
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#ifdef LEDEBUG
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if ((rmd.rmd1 & LE_R1_OFLO) == 0) {
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if (rmd.rmd1 & LE_R1_FRAM)
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printf("%s: framing error\n",
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sc->sc_dev.dv_xname);
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if (rmd.rmd1 & LE_R1_CRC)
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printf("%s: crc mismatch\n",
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sc->sc_dev.dv_xname);
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}
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#endif
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} else {
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if (rmd.rmd1 & LE_R1_OFLO)
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printf("%s: overflow\n",
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sc->sc_dev.dv_xname);
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}
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if (rmd.rmd1 & LE_R1_BUFF)
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printf("%s: receive buffer error\n",
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sc->sc_dev.dv_xname);
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ifp->if_ierrors++;
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} else if ((rmd.rmd1 & (LE_R1_STP | LE_R1_ENP)) !=
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(LE_R1_STP | LE_R1_ENP)) {
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printf("%s: dropping chained buffer\n",
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sc->sc_dev.dv_xname);
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ifp->if_ierrors++;
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} else {
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#ifdef LEDEBUG
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if (sc->sc_debug)
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am79900_recv_print(sc, sc->sc_last_rd);
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#endif
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lance_read(sc, LE_RBUFADDR(sc, bix),
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(rmd.rmd2 & 0xfff) - 4);
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}
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rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff);
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rmd.rmd2 = 0;
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rmd.rmd3 = 0;
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(*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd));
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#ifdef LEDEBUG
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if (sc->sc_debug)
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printf("sc->sc_last_rd = %x, rmd: "
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"adr %08x, flags/blen %08x\n",
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sc->sc_last_rd,
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rmd.rmd0, rmd.rmd1);
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#endif
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if (++bix == sc->sc_nrbuf)
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bix = 0;
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}
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sc->sc_last_rd = bix;
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}
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integrate void
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am79900_tint(sc)
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struct lance_softc *sc;
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{
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int bix;
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struct letmd tmd;
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bix = sc->sc_first_td;
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for (;;) {
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if (sc->sc_no_td <= 0)
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break;
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(*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix),
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sizeof(tmd));
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#ifdef LEDEBUG
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if (sc->sc_debug)
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printf("trans tmd: "
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"adr %08x, flags/blen %08x\n",
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tmd.tmd0, tmd.tmd1);
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#endif
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if (tmd.tmd1 & LE_T1_OWN)
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break;
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ifp->if_flags &= ~IFF_OACTIVE;
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if (tmd.tmd1 & LE_T1_ERR) {
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if (tmd.tmd2 & LE_T2_BUFF)
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printf("%s: transmit buffer error\n",
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sc->sc_dev.dv_xname);
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else if (tmd.tmd2 & LE_T2_UFLO)
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printf("%s: underflow\n", sc->sc_dev.dv_xname);
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if (tmd.tmd2 & (LE_T2_BUFF | LE_T2_UFLO)) {
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lance_reset(sc);
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return;
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}
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if (tmd.tmd2 & LE_T2_LCAR) {
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sc->sc_havecarrier = 0;
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if (sc->sc_nocarrier)
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(*sc->sc_nocarrier)(sc);
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else
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printf("%s: lost carrier\n",
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sc->sc_dev.dv_xname);
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}
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if (tmd.tmd2 & LE_T2_LCOL)
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ifp->if_collisions++;
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if (tmd.tmd2 & LE_T2_RTRY) {
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#ifdef LEDEBUG
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printf("%s: excessive collisions\n",
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sc->sc_dev.dv_xname);
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#endif
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ifp->if_collisions += 16;
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}
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ifp->if_oerrors++;
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} else {
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if (tmd.tmd1 & LE_T1_ONE)
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ifp->if_collisions++;
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else if (tmd.tmd1 & LE_T1_MORE)
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/* Real number is unknown. */
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ifp->if_collisions += 2;
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ifp->if_opackets++;
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}
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if (++bix == sc->sc_ntbuf)
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bix = 0;
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--sc->sc_no_td;
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}
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sc->sc_first_td = bix;
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am79900_start(ifp);
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if (sc->sc_no_td == 0)
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ifp->if_timer = 0;
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}
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/*
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* Controller interrupt.
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*/
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int
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am79900_intr(arg)
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void *arg;
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{
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struct lance_softc *sc = arg;
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u_int16_t isr;
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isr = (*sc->sc_rdcsr)(sc, LE_CSR0) | sc->sc_saved_csr0;
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sc->sc_saved_csr0 = 0;
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#if defined(LEDEBUG) && LEDEBUG > 1
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if (sc->sc_debug)
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printf("%s: am79900_intr entering with isr=%04x\n",
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sc->sc_dev.dv_xname, isr);
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#endif
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if ((isr & LE_C0_INTR) == 0)
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return (0);
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(*sc->sc_wrcsr)(sc, LE_CSR0,
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isr & (LE_C0_INEA | LE_C0_BABL | LE_C0_MISS | LE_C0_MERR |
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LE_C0_RINT | LE_C0_TINT | LE_C0_IDON));
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if (isr & LE_C0_ERR) {
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if (isr & LE_C0_BABL) {
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#ifdef LEDEBUG
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printf("%s: babble\n", sc->sc_dev.dv_xname);
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#endif
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ifp->if_oerrors++;
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}
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#if 0
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if (isr & LE_C0_CERR) {
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printf("%s: collision error\n", sc->sc_dev.dv_xname);
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ifp->if_collisions++;
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}
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#endif
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if (isr & LE_C0_MISS) {
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#ifdef LEDEBUG
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printf("%s: missed packet\n", sc->sc_dev.dv_xname);
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#endif
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ifp->if_ierrors++;
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}
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if (isr & LE_C0_MERR) {
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printf("%s: memory error\n", sc->sc_dev.dv_xname);
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lance_reset(sc);
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return (1);
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}
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}
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if ((isr & LE_C0_RXON) == 0) {
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printf("%s: receiver disabled\n", sc->sc_dev.dv_xname);
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ifp->if_ierrors++;
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lance_reset(sc);
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return (1);
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}
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if ((isr & LE_C0_TXON) == 0) {
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printf("%s: transmitter disabled\n", sc->sc_dev.dv_xname);
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ifp->if_oerrors++;
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lance_reset(sc);
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return (1);
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}
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/*
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* Pretend we have carrier; if we don't this will be cleared
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* shortly.
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*/
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sc->sc_havecarrier = 1;
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if (isr & LE_C0_RINT)
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am79900_rint(sc);
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if (isr & LE_C0_TINT)
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am79900_tint(sc);
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#if NRND > 0
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rnd_add_uint32(&sc->rnd_source, isr);
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#endif
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return (1);
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}
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#undef ifp
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/*
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* Setup output on interface.
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* Get another datagram to send off of the interface queue, and map it to the
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* interface before starting the output.
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* Called only at splnet or interrupt level.
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*/
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void
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am79900_start(ifp)
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struct ifnet *ifp;
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{
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struct lance_softc *sc = ifp->if_softc;
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int bix;
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struct mbuf *m;
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struct letmd tmd;
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int rp;
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int len;
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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 & 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);
|
|
}
|
|
|
|
IFQ_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 = lance_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 = LE_T1_OWN | LE_T1_STP | LE_T1_ENP | LE_T1_ONES | (-len & 0xfff);
|
|
tmd.tmd2 = 0;
|
|
tmd.tmd3 = 0;
|
|
|
|
(*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd));
|
|
|
|
#ifdef LEDEBUG
|
|
if (sc->sc_debug)
|
|
am79900_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;
|
|
}
|
|
|
|
#ifdef LEDEBUG
|
|
void
|
|
am79900_recv_print(sc, no)
|
|
struct lance_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.rmd2 & 0xfff) - 4;
|
|
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: adr %08x, flags/blen %08x\n",
|
|
sc->sc_dev.dv_xname, rmd.rmd0, rmd.rmd1);
|
|
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
|
|
am79900_xmit_print(sc, no)
|
|
struct lance_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.tmd1 & 0xfff);
|
|
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: adr %08x, flags/blen %08x\n",
|
|
sc->sc_dev.dv_xname, tmd.tmd0, tmd.tmd1);
|
|
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 */
|