NetBSD/sys/arch/sparc/dev/if_le.c

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/* $NetBSD: if_le.c,v 1.34 1996/05/16 15:56:54 abrown Exp $ */
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/*-
* Copyright (c) 1996
* The President and Fellows of Harvard College. All rights reserved.
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* Copyright (c) 1995 Charles M. Hannum. All rights reserved.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
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* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Aaron Brown and
* Harvard University.
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
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* @(#)if_le.c 8.2 (Berkeley) 11/16/93
*/
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/syslog.h>
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#include <sys/socket.h>
#include <sys/device.h>
#include <sys/malloc.h>
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#include <net/if.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif
#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <sparc/dev/sbusvar.h>
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#include <sparc/dev/dmareg.h>
#include <sparc/dev/dmavar.h>
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#include <dev/ic/am7990reg.h>
#include <dev/ic/am7990var.h>
#include <sparc/dev/if_lereg.h>
#include <sparc/dev/if_levar.h>
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int lematch __P((struct device *, void *, void *));
void leattach __P((struct device *, struct device *, void *));
#if defined(SUN4M) /* XXX */
int myleintr __P((void *));
int ledmaintr __P((struct dma_softc *));
int
myleintr(arg)
void *arg;
{
register struct le_softc *lesc = arg;
if (lesc->sc_dma->sc_regs->csr & D_ERR_PEND)
return ledmaintr(lesc->sc_dma);
/*
* XXX There is a bug somewhere in the interrupt code that causes stray
* ethernet interrupts under high network load. This bug has been
* impossible to locate, so until it is found, we just ignore stray
* interrupts, as they do not in fact correspond to dropped packets.
*/
/* return */ am7990_intr(arg);
return 1;
}
#endif
struct cfattach le_ca = {
sizeof(struct le_softc), lematch, leattach
};
hide void lewrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t));
hide u_int16_t lerdcsr __P((struct am7990_softc *, u_int16_t));
hide void lehwinit __P((struct am7990_softc *));
hide void
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lewrcsr(sc, port, val)
struct am7990_softc *sc;
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u_int16_t port, val;
{
register struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
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ler1->ler1_rap = port;
ler1->ler1_rdp = val;
}
hide u_int16_t
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lerdcsr(sc, port)
struct am7990_softc *sc;
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u_int16_t port;
{
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;
val = ler1->ler1_rdp;
return (val);
}
hide void
lehwinit(sc)
struct am7990_softc *sc;
{
#if defined(SUN4M)
struct le_softc *lesc = (struct le_softc *)sc;
if (CPU_ISSUN4M && lesc->sc_dma) {
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
if (ifp->if_flags & IFF_LINK0)
lesc->sc_dma->sc_regs->csr |= DE_AUI_TP;
else
lesc->sc_dma->sc_regs->csr &= ~DE_AUI_TP;
delay(20000); /* must not touch le for 20ms */
}
#endif
}
int
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lematch(parent, match, aux)
struct device *parent;
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void *match, *aux;
{
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struct cfdata *cf = match;
struct confargs *ca = aux;
register struct romaux *ra = &ca->ca_ra;
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if (strcmp(cf->cf_driver->cd_name, ra->ra_name))
return (0);
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if (ca->ca_bustype == BUS_SBUS)
return (1);
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return (probeget(ra->ra_vaddr, 2) != -1);
}
void
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leattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct le_softc *lesc = (struct le_softc *)self;
struct am7990_softc *sc = &lesc->sc_am7990;
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struct confargs *ca = aux;
int pri;
struct bootpath *bp;
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u_long laddr;
#if defined(SUN4C) || defined(SUN4M)
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int dmachild = strncmp(parent->dv_xname, "ledma", 5) == 0;
#endif
/* XXX the following declarations should be elsewhere */
extern void myetheraddr __P((u_char *));
if (ca->ca_ra.ra_nintr != 1) {
printf(": expected 1 interrupt, got %d\n", ca->ca_ra.ra_nintr);
return;
}
pri = ca->ca_ra.ra_intr[0].int_pri;
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),
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);
#if defined (SUN4M)
if ((laddr & 0xffffff) >= (laddr & 0xffffff) + MEMSIZE)
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panic("if_le: Lance buffer crosses 16MB boundary");
#endif
sc->sc_addr = laddr & 0xffffff;
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sc->sc_memsize = MEMSIZE;
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myetheraddr(sc->sc_arpcom.ac_enaddr);
sc->sc_copytodesc = am7990_copytobuf_contig;
sc->sc_copyfromdesc = am7990_copyfrombuf_contig;
sc->sc_copytobuf = am7990_copytobuf_contig;
sc->sc_copyfrombuf = am7990_copyfrombuf_contig;
sc->sc_zerobuf = am7990_zerobuf_contig;
sc->sc_rdcsr = lerdcsr;
sc->sc_wrcsr = lewrcsr;
sc->sc_hwinit = lehwinit;
am7990_config(sc);
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bp = ca->ca_ra.ra_bp;
switch (ca->ca_bustype) {
#if defined(SUN4C) || defined(SUN4M)
#define SAME_LANCE(bp, ca) \
((bp->val[0] == ca->ca_slot && bp->val[1] == ca->ca_offset) || \
(bp->val[0] == -1 && bp->val[1] == sc->sc_dev.dv_unit))
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case BUS_SBUS:
lesc->sc_sd.sd_reset = (void *)am7990_reset;
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if (dmachild) {
lesc->sc_dma = (struct dma_softc *)parent;
lesc->sc_dma->sc_le = lesc;
lesc->sc_dma->sc_regs->en_bar = laddr & 0xff000000;
sbus_establish(&lesc->sc_sd, parent);
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} else {
lesc->sc_dma = NULL;
sbus_establish(&lesc->sc_sd, &sc->sc_dev);
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}
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if (bp != NULL && strcmp(bp->name, le_cd.cd_name) == 0 &&
SAME_LANCE(bp, ca))
bp->dev = &sc->sc_dev;
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break;
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#endif /* SUN4C || SUN4M */
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default:
if (bp != NULL && strcmp(bp->name, le_cd.cd_name) == 0 &&
sc->sc_dev.dv_unit == bp->val[1])
bp->dev = &sc->sc_dev;
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break;
}
lesc->sc_ih.ih_fun = am7990_intr;
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#if defined(SUN4M) /*XXX*/
if (CPU_ISSUN4M)
lesc->sc_ih.ih_fun = myleintr;
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#endif
lesc->sc_ih.ih_arg = sc;
intr_establish(pri, &lesc->sc_ih);
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/* now initialize DMA */
if (lesc->sc_dma) {
DMA_ENINTR(lesc->sc_dma);
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}
}