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/* $OpenBSD: if_le_lebuffer.c,v 1.14 2022/03/13 13:34:54 mpi Exp $ */
/* $NetBSD: if_le_lebuffer.c,v 1.10 2002/03/11 16:00:56 pk Exp $ */
/*-
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
* 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.
*
* 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.
*
* 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 "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_media.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <machine/autoconf.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 */
struct le_softc {
struct am7990_softc sc_am7990; /* glue to MI code */
bus_space_tag_t sc_bustag;
bus_dma_tag_t sc_dmatag;
bus_space_handle_t sc_reg; /* LANCE registers */
};
int lematch_lebuffer(struct device *, void *, void *);
void leattach_lebuffer(struct device *, struct device *, void *);
/*
* Media types supported.
*/
static uint64_t lemedia[] = {
IFM_ETHER | IFM_10_T
};
const struct cfattach le_lebuffer_ca = {
sizeof(struct le_softc), lematch_lebuffer, leattach_lebuffer
};
extern struct cfdriver le_cd;
struct cfdriver lebuffer_cd = {
NULL, "lebuffer", DV_DULL
};
void le_lebuffer_wrcsr(struct lance_softc *, uint16_t, uint16_t);
uint16_t le_lebuffer_rdcsr(struct lance_softc *, uint16_t);
void
le_lebuffer_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
{
struct le_softc *lesc = (struct le_softc *)sc;
bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
bus_space_barrier(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, 2,
BUS_SPACE_BARRIER_WRITE);
bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val);
bus_space_barrier(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, 2,
BUS_SPACE_BARRIER_WRITE);
#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 uint16_t discard;
discard = bus_space_read_2(lesc->sc_bustag, lesc->sc_reg,
LEREG1_RDP);
}
#endif
}
uint16_t
le_lebuffer_rdcsr(struct lance_softc *sc, uint16_t port)
{
struct le_softc *lesc = (struct le_softc *)sc;
bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port);
bus_space_barrier(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, 2,
BUS_SPACE_BARRIER_WRITE);
return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP));
}
int
lematch_lebuffer(struct device *parent, void *vcf, void *aux)
{
struct sbus_attach_args *sa = aux;
struct cfdata *cf = vcf;
return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
}
void
leattach_lebuffer(struct device *parent, struct device *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(u_char *);
lesc->sc_bustag = sa->sa_bustag;
lesc->sc_dmatag = sa->sa_dmatag;
if (sbus_bus_map(sa->sa_bustag,
sa->sa_slot, sa->sa_offset, sa->sa_size,
0, 0, &lesc->sc_reg)) {
printf(": cannot map registers\n");
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);
myetheraddr(sc->sc_arpcom.ac_enaddr);
sc->sc_supmedia = lemedia;
sc->sc_nsupmedia = nitems(lemedia);
sc->sc_defaultmedia = sc->sc_supmedia[sc->sc_nsupmedia - 1];
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 = le_lebuffer_rdcsr;
sc->sc_wrcsr = le_lebuffer_wrcsr;
am7990_config(&lesc->sc_am7990);
/* Establish interrupt handler */
if (sa->sa_nintr != 0)
(void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri,
IPL_NET, 0, am7990_intr, sc, self->dv_xname);
}
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