269 lines
7.1 KiB
C
269 lines
7.1 KiB
C
/* $NetBSD: if_le.c,v 1.32 1996/04/22 03:57:29 abrown Exp $ */
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/*-
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* Copyright (c) 1996
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* The President and Fellows of Harvard University. 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 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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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_ether.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/if_lereg.h>
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#include <sparc/dev/if_levar.h>
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#include <dev/ic/am7990reg.h>
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#define LE_NEED_BUF_CONTIG
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#include <dev/ic/am7990var.h>
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#define LE_SOFTC(unit) le_cd.cd_devs[unit]
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#define LE_DELAY(x) DELAY(x)
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int lematch __P((struct device *, void *, void *));
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void leattach __P((struct device *, struct device *, void *));
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int leintr __P((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 *sc = arg;
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if (sc->sc_dma->sc_regs->csr & D_ERR_PEND)
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return ledmaintr(sc->sc_dma);
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/*
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* XXX There is a bug somewhere in the interrupt code that causes stray
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* ethernet interrupts under high network load. This bug has been
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* impossible to locate, so until it is found, we just ignore stray
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* interrupts, as they do not in fact correspond to dropped packets.
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*/
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/* return */ leintr(arg);
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return 1;
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}
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#endif
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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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struct cfdriver le_cd = {
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NULL, "le", DV_IFNET
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};
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integrate void
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lewrcsr(sc, port, val)
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struct le_softc *sc;
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u_int16_t port, val;
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{
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register struct lereg1 *ler1 = sc->sc_r1;
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ler1->ler1_rap = port;
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ler1->ler1_rdp = val;
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}
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integrate u_int16_t
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lerdcsr(sc, port)
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struct le_softc *sc;
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u_int16_t port;
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{
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register struct lereg1 *ler1 = 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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integrate void
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lehwinit(sc)
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struct le_softc *sc;
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{
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#if defined(SUN4M)
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if (CPU_ISSUN4M && sc->sc_dma) {
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struct ifnet *ifp = &sc->sc_arpcom.ac_if;
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if (ifp->if_flags & IFF_LINK0)
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sc->sc_dma->sc_regs->csr |= DE_AUI_TP;
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else
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sc->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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#endif
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}
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int
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lematch(parent, match, aux)
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struct device *parent;
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void *match, *aux;
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{
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struct cfdata *cf = match;
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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 *sc = (void *)self;
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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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u_long laddr;
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#if defined(SUN4C) || defined(SUN4M)
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int dmachild = strncmp(parent->dv_xname, "ledma", 5) == 0;
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#endif
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/* XXX the following declarations should be elsewhere */
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extern void myetheraddr(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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sc->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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sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON;
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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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myetheraddr(sc->sc_arpcom.ac_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_arpcom.ac_if.if_name = le_cd.cd_name;
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leconfig(sc);
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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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sc->sc_sd.sd_reset = (void *)lereset;
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if (dmachild) {
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sc->sc_dma = (struct dma_softc *)parent;
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sc->sc_dma->sc_le = sc;
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sc->sc_dma->sc_regs->en_bar = laddr & 0xff000000;
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sbus_establish(&sc->sc_sd, parent);
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} else {
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sc->sc_dma = NULL;
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sbus_establish(&sc->sc_sd, &sc->sc_dev);
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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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sc->sc_ih.ih_fun = leintr;
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#if defined(SUN4M) /*XXX*/
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if (CPU_ISSUN4M)
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sc->sc_ih.ih_fun = myleintr;
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#endif
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sc->sc_ih.ih_arg = sc;
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intr_establish(pri, &sc->sc_ih);
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/* now initialize DMA */
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if (sc->sc_dma) {
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DMA_ENINTR(sc->sc_dma);
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}
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}
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#include <dev/ic/am7990.c>
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