232 lines
6.6 KiB
C
232 lines
6.6 KiB
C
/* $NetBSD: if_le_lebuffer.c,v 1.3 1998/08/29 20:32:11 pk Exp $ */
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/*-
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* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace
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* Simulation Facility, NASA Ames Research Center; Paul Kranenburg.
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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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opt_inet.h"
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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 <dev/sbus/sbusvar.h>
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#include <dev/sbus/lebuffervar.h>
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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/am7990reg.h>
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#include <dev/ic/am7990var.h>
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/*
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* LANCE registers.
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*/
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#define LEREG1_RDP 0 /* Register Data port */
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#define LEREG1_RAP 2 /* Register Address port */
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struct le_softc {
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struct am7990_softc sc_am7990; /* glue to MI code */
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struct sbusdev sc_sd; /* sbus device */
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bus_space_tag_t sc_bustag;
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bus_dma_tag_t sc_dmatag;
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bus_space_handle_t sc_reg; /* LANCE registers */
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};
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int lematch_lebuffer __P((struct device *, struct cfdata *, void *));
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void leattach_lebuffer __P((struct device *, struct device *, void *));
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/*
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* Media types supported.
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*/
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static int lemedia[] = {
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IFM_ETHER|IFM_10_T,
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};
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#define NLEMEDIA (sizeof(lemedia) / sizeof(lemedia[0]))
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struct cfattach le_lebuffer_ca = {
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sizeof(struct le_softc), lematch_lebuffer, leattach_lebuffer
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};
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extern struct cfdriver le_cd;
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#if defined(_KERNEL) && !defined(_LKM)
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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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static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
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static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t));
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static void
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lewrcsr(sc, port, val)
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struct lance_softc *sc;
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u_int16_t port, val;
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{
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struct le_softc *lesc = (struct le_softc *)sc;
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bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
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bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_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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volatile u_int16_t discard;
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discard = bus_space_read_2(lesc->sc_bustag, lesc->sc_reg,
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LEREG1_RDP);
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}
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#endif
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}
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static u_int16_t
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lerdcsr(sc, port)
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struct lance_softc *sc;
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u_int16_t port;
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{
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struct le_softc *lesc = (struct le_softc *)sc;
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bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
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return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP));
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}
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int
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lematch_lebuffer(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 sbus_attach_args *sa = aux;
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return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
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}
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#define SAME_LANCE(bp, sa) \
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(bp->val[0] == sa->sa_slot && bp->val[1] == sa->sa_offset)
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void
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leattach_lebuffer(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 sbus_attach_args *sa = aux;
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struct le_softc *lesc = (struct le_softc *)self;
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struct lance_softc *sc = &lesc->sc_am7990.lsc;
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struct lebuf_softc *lebuf = (struct lebuf_softc *)parent;
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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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lesc->sc_bustag = sa->sa_bustag;
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lesc->sc_dmatag = sa->sa_dmatag;
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if (bus_space_map2(sa->sa_bustag,
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sa->sa_slot,
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sa->sa_offset,
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sa->sa_size,
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BUS_SPACE_MAP_LINEAR,
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0, &lesc->sc_reg)) {
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printf("%s @ lebuffer: cannot map registers\n", self->dv_xname);
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return;
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}
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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(sa->sa_node, "busmaster-regval",
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LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON);
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/* Assume SBus is grandparent */
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lesc->sc_sd.sd_reset = (void *)lance_reset;
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sbus_establish(&lesc->sc_sd, parent);
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if (sa->sa_bp != NULL && strcmp(sa->sa_bp->name, le_cd.cd_name) == 0 &&
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SAME_LANCE(sa->sa_bp, sa))
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sa->sa_bp->dev = &sc->sc_dev;
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sc->sc_supmedia = lemedia;
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sc->sc_nsupmedia = NLEMEDIA;
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sc->sc_defaultmedia = lemedia[0];
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myetheraddr(sc->sc_enaddr);
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sc->sc_copytodesc = lance_copytobuf_contig;
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sc->sc_copyfromdesc = lance_copyfrombuf_contig;
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sc->sc_copytobuf = lance_copytobuf_contig;
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sc->sc_copyfrombuf = lance_copyfrombuf_contig;
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sc->sc_zerobuf = lance_zerobuf_contig;
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sc->sc_rdcsr = lerdcsr;
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sc->sc_wrcsr = lewrcsr;
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am7990_config(&lesc->sc_am7990);
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(void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 0,
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am7990_intr, sc);
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}
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