NetBSD/sys/dev/sbus/if_le_lebuffer.c

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/* $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.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace
* Simulation Facility, NASA Ames Research Center; Paul Kranenburg.
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*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include "opt_inet.h"
#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 <dev/sbus/sbusvar.h>
#include <dev/sbus/lebuffervar.h>
#include <dev/ic/lancereg.h>
#include <dev/ic/lancevar.h>
#include <dev/ic/am7990reg.h>
#include <dev/ic/am7990var.h>
/*
* LANCE registers.
*/
#define LEREG1_RDP 0 /* Register Data port */
#define LEREG1_RAP 2 /* Register Address port */
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struct le_softc {
struct am7990_softc sc_am7990; /* glue to MI code */
struct sbusdev sc_sd; /* sbus device */
bus_space_tag_t sc_bustag;
bus_dma_tag_t sc_dmatag;
bus_space_handle_t sc_reg; /* LANCE registers */
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};
int lematch_lebuffer __P((struct device *, struct cfdata *, void *));
void leattach_lebuffer __P((struct device *, struct device *, void *));
/*
* Media types supported.
*/
static int lemedia[] = {
IFM_ETHER|IFM_10_T,
};
#define NLEMEDIA (sizeof(lemedia) / sizeof(lemedia[0]))
struct cfattach le_lebuffer_ca = {
sizeof(struct le_softc), lematch_lebuffer, leattach_lebuffer
};
extern struct cfdriver le_cd;
#if defined(_KERNEL) && !defined(_LKM)
#include "opt_ddb.h"
#endif
#ifdef DDB
#define integrate
#define hide
#else
#define integrate static __inline
#define hide static
#endif
static void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
static u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t));
static void
lewrcsr(sc, port, val)
struct lance_softc *sc;
u_int16_t port, val;
{
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);
bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val);
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#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) {
volatile u_int16_t discard;
discard = bus_space_read_2(lesc->sc_bustag, lesc->sc_reg,
LEREG1_RDP);
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}
#endif
}
static u_int16_t
lerdcsr(sc, port)
struct lance_softc *sc;
u_int16_t port;
{
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);
return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP));
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}
int
lematch_lebuffer(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct sbus_attach_args *sa = aux;
return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
}
#define SAME_LANCE(bp, sa) \
(bp->val[0] == sa->sa_slot && bp->val[1] == sa->sa_offset)
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void
leattach_lebuffer(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct sbus_attach_args *sa = aux;
struct le_softc *lesc = (struct le_softc *)self;
struct lance_softc *sc = &lesc->sc_am7990.lsc;
struct lebuf_softc *lebuf = (struct lebuf_softc *)parent;
/* XXX the following declarations should be elsewhere */
extern void myetheraddr __P((u_char *));
lesc->sc_bustag = sa->sa_bustag;
lesc->sc_dmatag = sa->sa_dmatag;
if (bus_space_map2(sa->sa_bustag,
sa->sa_slot,
sa->sa_offset,
sa->sa_size,
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BUS_SPACE_MAP_LINEAR,
0, &lesc->sc_reg)) {
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printf("%s @ lebuffer: cannot map registers\n", self->dv_xname);
return;
}
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(sa->sa_node, "busmaster-regval",
LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON);
/* Assume SBus is grandparent */
lesc->sc_sd.sd_reset = (void *)lance_reset;
sbus_establish(&lesc->sc_sd, parent);
if (sa->sa_bp != NULL && strcmp(sa->sa_bp->name, le_cd.cd_name) == 0 &&
SAME_LANCE(sa->sa_bp, sa))
sa->sa_bp->dev = &sc->sc_dev;
sc->sc_supmedia = lemedia;
sc->sc_nsupmedia = NLEMEDIA;
sc->sc_defaultmedia = lemedia[0];
myetheraddr(sc->sc_enaddr);
sc->sc_copytodesc = lance_copytobuf_contig;
sc->sc_copyfromdesc = lance_copyfrombuf_contig;
sc->sc_copytobuf = lance_copytobuf_contig;
sc->sc_copyfrombuf = lance_copyfrombuf_contig;
sc->sc_zerobuf = lance_zerobuf_contig;
sc->sc_rdcsr = lerdcsr;
sc->sc_wrcsr = lewrcsr;
am7990_config(&lesc->sc_am7990);
(void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, 0,
am7990_intr, sc);
}