467 lines
12 KiB
C
467 lines
12 KiB
C
/* $NetBSD: if_le.c,v 1.46 1997/03/23 22:54:27 pk Exp $ */
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/*-
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* Copyright (c) 1997 Jason R. Thorpe. All rights reserved.
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* Copyright (c) 1996
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* The President and Fellows of Harvard College. All rights reserved.
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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 Aaron Brown and
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* Harvard University.
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* This product includes software developed for the NetBSD Project
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* by Jason R. Thorpe.
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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 <net/if.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_inarp.h>
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#endif
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#include <machine/autoconf.h>
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#include <machine/cpu.h>
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#include <sparc/dev/sbusvar.h>
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#include <sparc/dev/dmareg.h>
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#include <sparc/dev/dmavar.h>
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#include <sparc/dev/lebuffervar.h>
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#include <dev/ic/am7990reg.h>
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#include <dev/ic/am7990var.h>
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#include <sparc/dev/if_lereg.h>
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#include <sparc/dev/if_levar.h>
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int lematch __P((struct device *, struct cfdata *, void *));
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void leattach __P((struct device *, struct device *, void *));
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#if defined(SUN4M) /* XXX */
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int myleintr __P((void *));
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int ledmaintr __P((struct dma_softc *));
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int
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myleintr(arg)
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void *arg;
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{
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register struct le_softc *lesc = arg;
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if (lesc->sc_dma->sc_regs->csr & D_ERR_PEND)
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return ledmaintr(lesc->sc_dma);
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return (am7990_intr(arg));
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}
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#endif
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#if defined(SUN4M)
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/*
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* Media types supported by the Sun4m.
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*/
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int lemediasun4m[] = {
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IFM_ETHER|IFM_10_T,
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IFM_ETHER|IFM_10_5,
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IFM_ETHER|IFM_AUTO,
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};
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#define NLEMEDIASUN4M (sizeof(lemediasun4m) / sizeof(lemediasun4m[0]))
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void lesetutp __P((struct am7990_softc *));
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void lesetaui __P((struct am7990_softc *));
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int lemediachange __P((struct am7990_softc *));
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void lemediastatus __P((struct am7990_softc *, struct ifmediareq *));
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#endif /* SUN4M */
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struct cfattach le_ca = {
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sizeof(struct le_softc), lematch, leattach
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};
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hide void lewrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t));
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hide u_int16_t lerdcsr __P((struct am7990_softc *, u_int16_t));
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hide void lehwinit __P((struct am7990_softc *));
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hide void lenocarrier __P((struct am7990_softc *));
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hide void
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lewrcsr(sc, port, val)
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struct am7990_softc *sc;
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u_int16_t port, val;
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{
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register struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
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#if defined(SUN4M)
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volatile u_int16_t discard;
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#endif
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ler1->ler1_rap = port;
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ler1->ler1_rdp = val;
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#if defined(SUN4M)
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/*
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* We need to flush the Sbus->Mbus write buffers. This can most
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* easily be accomplished by reading back the register that we
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* just wrote (thanks to Chris Torek for this solution).
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*/
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if (CPU_ISSUN4M)
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discard = ler1->ler1_rdp;
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#endif
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}
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hide u_int16_t
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lerdcsr(sc, port)
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struct am7990_softc *sc;
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u_int16_t port;
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{
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register struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
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u_int16_t val;
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ler1->ler1_rap = port;
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val = ler1->ler1_rdp;
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return (val);
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}
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#if defined(SUN4M)
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void
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lesetutp(sc)
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struct am7990_softc *sc;
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{
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struct le_softc *lesc = (struct le_softc *)sc;
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lesc->sc_dma->sc_regs->csr |= DE_AUI_TP;
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delay(20000); /* must not touch le for 20ms */
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}
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void
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lesetaui(sc)
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struct am7990_softc *sc;
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{
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struct le_softc *lesc = (struct le_softc *)sc;
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lesc->sc_dma->sc_regs->csr &= ~DE_AUI_TP;
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delay(20000); /* must not touch le for 20ms */
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}
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int
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lemediachange(sc)
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struct am7990_softc *sc;
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{
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struct ifmedia *ifm = &sc->sc_media;
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if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
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return (EINVAL);
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/*
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* Switch to the selected media. If autoselect is
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* set, we don't really have to do anything. We'll
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* switch to the other media when we detect loss of
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* carrier.
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*/
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switch (IFM_SUBTYPE(ifm->ifm_media)) {
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case IFM_10_T:
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lesetutp(sc);
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break;
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case IFM_10_5:
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lesetaui(sc);
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break;
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case IFM_AUTO:
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break;
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default:
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return (EINVAL);
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}
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return (0);
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}
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void
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lemediastatus(sc, ifmr)
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struct am7990_softc *sc;
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struct ifmediareq *ifmr;
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{
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struct le_softc *lesc = (struct le_softc *)sc;
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/*
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* Notify the world which media we're currently using.
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*/
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if (lesc->sc_dma->sc_regs->csr & DE_AUI_TP)
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ifmr->ifm_active = IFM_ETHER|IFM_10_T;
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else
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ifmr->ifm_active = IFM_ETHER|IFM_10_5;
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}
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#endif /* SUN4M */
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hide void
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lehwinit(sc)
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struct am7990_softc *sc;
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{
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#if defined(SUN4M)
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struct le_softc *lesc = (struct le_softc *)sc;
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/*
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* Make sure we're using the currently-enabled media type.
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* XXX Actually, this is probably unnecessary, now.
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*/
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if (CPU_ISSUN4M && lesc->sc_dma) {
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switch (IFM_SUBTYPE(sc->sc_media.ifm_cur->ifm_media)) {
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case IFM_10_T:
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lesetutp(sc);
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break;
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case IFM_10_5:
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lesetaui(sc);
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break;
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}
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}
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#endif
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}
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hide void
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lenocarrier(sc)
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struct am7990_softc *sc;
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{
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#if defined(SUN4M)
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struct le_softc *lesc = (struct le_softc *)sc;
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if (CPU_ISSUN4M && lesc->sc_dma) {
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/*
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* Check if the user has requested a certain cable type, and
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* if so, honor that request.
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*/
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printf("%s: lost carrier on ", sc->sc_dev.dv_xname);
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if (lesc->sc_dma->sc_regs->csr & DE_AUI_TP) {
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printf("UTP port");
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switch (IFM_SUBTYPE(sc->sc_media.ifm_media)) {
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case IFM_10_5:
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case IFM_AUTO:
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printf(", switching to AUI port");
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lesetaui(sc);
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}
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} else {
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printf("AUI port");
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switch (IFM_SUBTYPE(sc->sc_media.ifm_media)) {
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case IFM_10_T:
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case IFM_AUTO:
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printf(", switching to UTP port");
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lesetutp(sc);
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}
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}
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printf("\n");
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} else
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#endif
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printf("%s: lost carrier\n", sc->sc_dev.dv_xname);
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}
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int
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lematch(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct confargs *ca = aux;
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register struct romaux *ra = &ca->ca_ra;
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if (strcmp(cf->cf_driver->cd_name, ra->ra_name))
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return (0);
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if (ca->ca_bustype == BUS_SBUS)
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return (1);
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return (probeget(ra->ra_vaddr, 2) != -1);
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}
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void
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leattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct le_softc *lesc = (struct le_softc *)self;
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struct am7990_softc *sc = &lesc->sc_am7990;
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struct confargs *ca = aux;
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int pri;
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struct bootpath *bp;
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#if defined(SUN4C) || defined(SUN4M)
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int sbuschild = strncmp(parent->dv_xname, "sbus", 4) == 0;
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int lebufchild = strncmp(parent->dv_xname, "lebuffer", 8) == 0;
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int dmachild = strncmp(parent->dv_xname, "ledma", 5) == 0;
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struct lebuf_softc *lebuf;
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#endif
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/* XXX the following declarations should be elsewhere */
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extern void myetheraddr __P((u_char *));
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if (ca->ca_ra.ra_nintr != 1) {
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printf(": expected 1 interrupt, got %d\n", ca->ca_ra.ra_nintr);
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return;
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}
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pri = ca->ca_ra.ra_intr[0].int_pri;
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printf(" pri %d", pri);
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lesc->sc_r1 = (struct lereg1 *)mapiodev(ca->ca_ra.ra_reg, 0,
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sizeof(struct lereg1),
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ca->ca_bustype);
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#if defined(SUN4C) || defined(SUN4M)
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lebuf = NULL;
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if (lebufchild) {
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lebuf = (struct lebuf_softc *)parent;
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} else if (sbuschild) {
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struct sbus_softc *sbus = (struct sbus_softc *)parent;
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struct sbusdev *sd;
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/*
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* Find last "unallocated" lebuffer and pair it with
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* this `le' device on the assumption that we're on
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* a pre-historic ROM that doesn't establish le<=>lebuffer
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* parent-child relationships.
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*/
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for (sd = sbus->sc_sbdev; sd != NULL; sd = sd->sd_bchain) {
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if (strncmp("lebuffer", sd->sd_dev->dv_xname, 8) != 0)
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continue;
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if (((struct lebuf_softc *)sd->sd_dev)->attached == 0) {
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lebuf = (struct lebuf_softc *)sd->sd_dev;
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break;
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}
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}
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}
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if (lebuf != NULL) {
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sc->sc_mem = lebuf->sc_buffer;
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sc->sc_memsize = lebuf->sc_bufsiz;
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sc->sc_addr = 0; /* Lance view is offset by buffer location */
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lebuf->attached = 1;
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/* That old black magic... */
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sc->sc_conf3 = getpropint(ca->ca_ra.ra_node,
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"busmaster-regval",
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LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON);
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} else
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#endif
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{
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u_long laddr;
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laddr = (u_long)dvma_malloc(MEMSIZE, &sc->sc_mem, M_NOWAIT);
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#if defined (SUN4M)
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if ((laddr & 0xffffff) >= (laddr & 0xffffff) + MEMSIZE)
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panic("if_le: Lance buffer crosses 16MB boundary");
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#endif
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sc->sc_addr = laddr & 0xffffff;
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sc->sc_memsize = MEMSIZE;
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sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON;
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#if defined(SUN4C) || defined(SUN4M)
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if (dmachild) {
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lesc->sc_dma = (struct dma_softc *)parent;
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lesc->sc_dma->sc_le = lesc;
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DMA_RESET(lesc->sc_dma);
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lesc->sc_dma->sc_regs->en_bar = laddr & 0xff000000;
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}
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#endif
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}
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bp = ca->ca_ra.ra_bp;
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switch (ca->ca_bustype) {
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#if defined(SUN4C) || defined(SUN4M)
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#define SAME_LANCE(bp, ca) \
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((bp->val[0] == ca->ca_slot && bp->val[1] == ca->ca_offset) || \
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(bp->val[0] == -1 && bp->val[1] == sc->sc_dev.dv_unit))
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case BUS_SBUS:
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lesc->sc_sd.sd_reset = (void *)am7990_reset;
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if (sbuschild) {
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sbus_establish(&lesc->sc_sd, &sc->sc_dev);
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} else {
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/* Assume SBus is grandparent */
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sbus_establish(&lesc->sc_sd, parent);
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}
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if (bp != NULL && strcmp(bp->name, le_cd.cd_name) == 0 &&
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SAME_LANCE(bp, ca))
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bp->dev = &sc->sc_dev;
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break;
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#endif /* SUN4C || SUN4M */
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default:
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if (bp != NULL && strcmp(bp->name, le_cd.cd_name) == 0 &&
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sc->sc_dev.dv_unit == bp->val[1])
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bp->dev = &sc->sc_dev;
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break;
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}
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myetheraddr(sc->sc_enaddr);
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sc->sc_copytodesc = am7990_copytobuf_contig;
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sc->sc_copyfromdesc = am7990_copyfrombuf_contig;
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sc->sc_copytobuf = am7990_copytobuf_contig;
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sc->sc_copyfrombuf = am7990_copyfrombuf_contig;
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sc->sc_zerobuf = am7990_zerobuf_contig;
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sc->sc_rdcsr = lerdcsr;
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sc->sc_wrcsr = lewrcsr;
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sc->sc_hwinit = lehwinit;
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sc->sc_nocarrier = lenocarrier;
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#if defined(SUN4M)
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if (CPU_ISSUN4M) {
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sc->sc_mediachange = lemediachange;
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sc->sc_mediastatus = lemediastatus;
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sc->sc_supmedia = lemediasun4m;
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sc->sc_nsupmedia = NLEMEDIASUN4M;
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sc->sc_defaultmedia = IFM_ETHER|IFM_AUTO;
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}
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#endif
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am7990_config(sc);
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lesc->sc_ih.ih_fun = am7990_intr;
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#if defined(SUN4M) /*XXX*/
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if (CPU_ISSUN4M && lesc->sc_dma)
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lesc->sc_ih.ih_fun = myleintr;
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#endif
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lesc->sc_ih.ih_arg = sc;
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intr_establish(pri, &lesc->sc_ih);
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/* now initialize DMA */
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if (lesc->sc_dma) {
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DMA_ENINTR(lesc->sc_dma);
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}
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}
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