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

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/* $NetBSD: if_le.c,v 1.49 1997/07/07 16:28:44 pk Exp $ */
/*-
* Copyright (c) 1997 Jason R. Thorpe. All rights reserved.
* Copyright (c) 1996
* The President and Fellows of Harvard College. All rights reserved.
* Copyright (c) 1995 Charles M. Hannum. All rights reserved.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* 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 for the NetBSD Project
* by Jason R. Thorpe.
* 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.
*
* @(#)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>
#include <sys/socket.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_inarp.h>
#endif
#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <sparc/dev/sbusvar.h>
#include <sparc/dev/dmareg.h>
#include <sparc/dev/dmavar.h>
#include <sparc/dev/lebuffervar.h>
#include <dev/ic/am7990reg.h>
#include <dev/ic/am7990var.h>
#include <sparc/dev/if_lereg.h>
#include <sparc/dev/if_levar.h>
int lematch __P((struct device *, struct cfdata *, 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);
return (am7990_intr(arg));
}
#endif
#if defined(SUN4M)
/*
* Media types supported by the Sun4m.
*/
int lemediasun4m[] = {
IFM_ETHER|IFM_10_T,
IFM_ETHER|IFM_10_5,
IFM_ETHER|IFM_AUTO,
};
#define NLEMEDIASUN4M (sizeof(lemediasun4m) / sizeof(lemediasun4m[0]))
void lesetutp __P((struct am7990_softc *));
void lesetaui __P((struct am7990_softc *));
int lemediachange __P((struct am7990_softc *));
void lemediastatus __P((struct am7990_softc *, struct ifmediareq *));
#endif /* SUN4M */
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 lehwreset __P((struct am7990_softc *));
hide void lehwinit __P((struct am7990_softc *));
hide void lenocarrier __P((struct am7990_softc *));
hide void
lewrcsr(sc, port, val)
struct am7990_softc *sc;
u_int16_t port, val;
{
register struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
#if defined(SUN4M)
volatile u_int16_t discard;
#endif
ler1->ler1_rap = port;
ler1->ler1_rdp = val;
#if defined(SUN4M)
/*
* We need to flush the Sbus->Mbus write buffers. This can most
* easily be accomplished by reading back the register that we
* just wrote (thanks to Chris Torek for this solution).
*/
if (CPU_ISSUN4M)
discard = ler1->ler1_rdp;
#endif
}
hide u_int16_t
lerdcsr(sc, port)
struct am7990_softc *sc;
u_int16_t port;
{
register struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
u_int16_t val;
ler1->ler1_rap = port;
val = ler1->ler1_rdp;
return (val);
}
#if defined(SUN4M)
void
lesetutp(sc)
struct am7990_softc *sc;
{
struct le_softc *lesc = (struct le_softc *)sc;
lesc->sc_dma->sc_regs->csr |= DE_AUI_TP;
delay(20000); /* must not touch le for 20ms */
}
void
lesetaui(sc)
struct am7990_softc *sc;
{
struct le_softc *lesc = (struct le_softc *)sc;
lesc->sc_dma->sc_regs->csr &= ~DE_AUI_TP;
delay(20000); /* must not touch le for 20ms */
}
int
lemediachange(sc)
struct am7990_softc *sc;
{
struct ifmedia *ifm = &sc->sc_media;
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
return (EINVAL);
/*
* Switch to the selected media. If autoselect is
* set, we don't really have to do anything. We'll
* switch to the other media when we detect loss of
* carrier.
*/
switch (IFM_SUBTYPE(ifm->ifm_media)) {
case IFM_10_T:
lesetutp(sc);
break;
case IFM_10_5:
lesetaui(sc);
break;
case IFM_AUTO:
break;
default:
return (EINVAL);
}
return (0);
}
void
lemediastatus(sc, ifmr)
struct am7990_softc *sc;
struct ifmediareq *ifmr;
{
struct le_softc *lesc = (struct le_softc *)sc;
if (lesc->sc_dma == NULL)
return;
/*
* Notify the world which media we're currently using.
*/
if (lesc->sc_dma->sc_regs->csr & DE_AUI_TP)
ifmr->ifm_active = IFM_ETHER|IFM_10_T;
else
ifmr->ifm_active = IFM_ETHER|IFM_10_5;
}
#endif /* SUN4M */
hide void
lehwreset(sc)
struct am7990_softc *sc;
{
#if defined(SUN4M)
struct le_softc *lesc = (struct le_softc *)sc;
/*
* Reset DMA channel.
*/
if (CPU_ISSUN4M && lesc->sc_dma) {
DMA_RESET(lesc->sc_dma);
lesc->sc_dma->sc_regs->en_bar = lesc->sc_laddr & 0xff000000;
DMA_ENINTR(lesc->sc_dma);
}
#endif
}
hide void
lehwinit(sc)
struct am7990_softc *sc;
{
#if defined(SUN4M)
struct le_softc *lesc = (struct le_softc *)sc;
/*
* Make sure we're using the currently-enabled media type.
* XXX Actually, this is probably unnecessary, now.
*/
if (CPU_ISSUN4M && lesc->sc_dma) {
switch (IFM_SUBTYPE(sc->sc_media.ifm_cur->ifm_media)) {
case IFM_10_T:
lesetutp(sc);
break;
case IFM_10_5:
lesetaui(sc);
break;
}
}
#endif
}
hide void
lenocarrier(sc)
struct am7990_softc *sc;
{
#if defined(SUN4M)
struct le_softc *lesc = (struct le_softc *)sc;
if (CPU_ISSUN4M && lesc->sc_dma) {
/*
* Check if the user has requested a certain cable type, and
* if so, honor that request.
*/
printf("%s: lost carrier on ", sc->sc_dev.dv_xname);
if (lesc->sc_dma->sc_regs->csr & DE_AUI_TP) {
printf("UTP port");
switch (IFM_SUBTYPE(sc->sc_media.ifm_media)) {
case IFM_10_5:
case IFM_AUTO:
printf(", switching to AUI port");
lesetaui(sc);
}
} else {
printf("AUI port");
switch (IFM_SUBTYPE(sc->sc_media.ifm_media)) {
case IFM_10_T:
case IFM_AUTO:
printf(", switching to UTP port");
lesetutp(sc);
}
}
printf("\n");
} else
#endif
printf("%s: lost carrier\n", sc->sc_dev.dv_xname);
}
int
lematch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct confargs *ca = aux;
register struct romaux *ra = &ca->ca_ra;
if (strcmp(cf->cf_driver->cd_name, ra->ra_name))
return (0);
if (ca->ca_bustype == BUS_SBUS)
return (1);
return (probeget(ra->ra_vaddr, 2) != -1);
}
void
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;
struct confargs *ca = aux;
int pri;
struct bootpath *bp;
#if defined(SUN4C) || defined(SUN4M)
int sbuschild = strncmp(parent->dv_xname, "sbus", 4) == 0;
int lebufchild = strncmp(parent->dv_xname, "lebuffer", 8) == 0;
int dmachild = strncmp(parent->dv_xname, "ledma", 5) == 0;
struct lebuf_softc *lebuf;
#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);
lesc->sc_r1 = (struct lereg1 *)
mapiodev(ca->ca_ra.ra_reg, 0, sizeof(struct lereg1));
#if defined(SUN4C) || defined(SUN4M)
lebuf = NULL;
if (lebufchild) {
lebuf = (struct lebuf_softc *)parent;
} else if (sbuschild) {
struct sbus_softc *sbus = (struct sbus_softc *)parent;
struct sbusdev *sd;
/*
* Find last "unallocated" lebuffer and pair it with
* this `le' device on the assumption that we're on
* a pre-historic ROM that doesn't establish le<=>lebuffer
* parent-child relationships.
*/
for (sd = sbus->sc_sbdev; sd != NULL; sd = sd->sd_bchain) {
if (strncmp("lebuffer", sd->sd_dev->dv_xname, 8) != 0)
continue;
if (((struct lebuf_softc *)sd->sd_dev)->attached == 0) {
lebuf = (struct lebuf_softc *)sd->sd_dev;
break;
}
}
}
if (lebuf != NULL) {
sc->sc_mem = lebuf->sc_buffer;
sc->sc_memsize = lebuf->sc_bufsiz;
sc->sc_addr = 0; /* Lance view is offset by buffer location */
lebuf->attached = 1;
/* That old black magic... */
sc->sc_conf3 = getpropint(ca->ca_ra.ra_node,
"busmaster-regval",
LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON);
} else
#endif
{
u_long laddr;
laddr = (u_long)dvma_malloc(MEMSIZE, &sc->sc_mem, M_NOWAIT);
#if defined (SUN4M)
if ((laddr & 0xffffff) >= (laddr & 0xffffff) + MEMSIZE)
panic("if_le: Lance buffer crosses 16MB boundary");
#endif
sc->sc_addr = laddr & 0xffffff;
sc->sc_memsize = MEMSIZE;
sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON;
#if defined(SUN4C) || defined(SUN4M)
if (dmachild) {
lesc->sc_dma = (struct dma_softc *)parent;
lesc->sc_dma->sc_le = lesc;
lesc->sc_laddr = laddr;
}
#endif
}
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))
case BUS_SBUS:
lesc->sc_sd.sd_reset = (void *)am7990_reset;
if (sbuschild) {
sbus_establish(&lesc->sc_sd, &sc->sc_dev);
} else {
/* Assume SBus is grandparent */
sbus_establish(&lesc->sc_sd, parent);
}
if (bp != NULL && strcmp(bp->name, le_cd.cd_name) == 0 &&
SAME_LANCE(bp, ca))
bp->dev = &sc->sc_dev;
break;
#endif /* SUN4C || SUN4M */
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;
break;
}
myetheraddr(sc->sc_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;
sc->sc_nocarrier = lenocarrier;
sc->sc_hwreset = lehwreset;
#if defined(SUN4M)
if (CPU_ISSUN4M && lesc->sc_dma) {
sc->sc_mediachange = lemediachange;
sc->sc_mediastatus = lemediastatus;
sc->sc_supmedia = lemediasun4m;
sc->sc_nsupmedia = NLEMEDIASUN4M;
sc->sc_defaultmedia = IFM_ETHER|IFM_AUTO;
}
#endif
am7990_config(sc);
lesc->sc_ih.ih_fun = am7990_intr;
#if defined(SUN4M) /*XXX*/
if (CPU_ISSUN4M && lesc->sc_dma)
lesc->sc_ih.ih_fun = myleintr;
#endif
lesc->sc_ih.ih_arg = sc;
intr_establish(pri, &lesc->sc_ih);
/* now initialize DMA */
lehwreset(sc);
}
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