NetBSD/sys/arch/mipsco/obio/if_le.c

269 lines
6.9 KiB
C

/* $NetBSD: if_le.c,v 1.2 2000/08/15 04:56:46 wdk Exp $ */
/*-
* Copyright (c) 1996, 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Adam Glass, Gordon W. Ross and Wayne Knowles
*
* 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 <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/cpu.h>
#include <machine/mainboard.h>
#include <machine/autoconf.h>
#include <machine/bus.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 2 /* Offset to LANCE data register */
#define LEREG1_RAP 6 /* Offset to LANCE address register */
/*
* Ethernet software status per interface.
* The real stuff is in dev/ic/am7990var.h
*/
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 */
bus_dmamap_t sc_dmamap;
struct evcnt sc_intrcnt; /* Interrupt event counter */
};
static int le_match __P((struct device *, struct cfdata *, void *));
static void le_attach __P((struct device *, struct device *, void *));
struct cfattach le_ca = {
sizeof(struct le_softc), le_match, le_attach
};
#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
int le_intr __P((void *));
hide void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
hide u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t));
hide void
lewrcsr(sc, port, val)
struct lance_softc *sc;
u_int16_t port, val;
{
struct le_softc *lesc = (struct le_softc *)sc;
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);
}
hide u_int16_t
lerdcsr(sc, port)
struct lance_softc *sc;
u_int16_t port;
{
struct le_softc *lesc = (struct le_softc *)sc;
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));
}
int
le_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct confargs *ca = aux;
int addr;
if (strcmp(ca->ca_name, "le"))
return 0;
switch(cf->cf_unit) {
case 0:
addr = LANCE_PORT;
break;
default:
return 0;
}
if (badaddr((void *)addr, 1))
return 0;
return 1;
}
#define LE_MEMSIZE (32*1024)
void
le_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct le_softc *lesc = (struct le_softc *)self;
struct lance_softc *sc = &lesc->sc_am7990.lsc;
struct confargs *ca = aux;
bus_dma_tag_t dmat;
bus_dma_segment_t seg;
int rseg;
/*struct confargs *ca = aux;*/
u_char *id;
int i;
caddr_t kvaddr;
switch (sc->sc_dev.dv_unit) {
case 0:
id = (u_char *)(ETHER_ID);
break;
default:
panic("le_attach");
}
lesc->sc_bustag = ca->ca_bustag;
dmat = lesc->sc_dmatag = ca->ca_dmatag;
if (bus_space_map(ca->ca_bustag, ca->ca_addr,
8, /* size */
BUS_SPACE_MAP_LINEAR,
&lesc->sc_reg) != 0) {
printf(": cannot map registers\n");
return;
}
/*
* Allocate a physically contiguous DMA area for the chip.
*/
if (bus_dmamem_alloc(dmat, LE_MEMSIZE, 0, 0, &seg, 1,
&rseg, BUS_DMA_NOWAIT)) {
printf(": can't allocate DMA area\n");
return;
}
/* Map pages into kernel memory */
if (bus_dmamem_map(dmat, &seg, rseg, LE_MEMSIZE,
&kvaddr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
printf(": can't map DMA area\n");
bus_dmamem_free(dmat, &seg, rseg);
return;
}
/* Build DMA map so we can get physical address */
if (bus_dmamap_create(dmat, LE_MEMSIZE, 1, LE_MEMSIZE,
0, BUS_DMA_NOWAIT, &lesc->sc_dmamap)) {
printf(": can't create DMA map\n");
goto bad;
}
if (bus_dmamap_load(dmat, lesc->sc_dmamap, kvaddr, LE_MEMSIZE,
NULL, BUS_DMA_NOWAIT)) {
printf(": can't load DMA map\n");
goto bad;
}
sc->sc_memsize = LE_MEMSIZE; /* 16K Buffer space*/
sc->sc_mem = (void *) MIPS_PHYS_TO_KSEG1(kvaddr);
sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr;
sc->sc_conf3 = LE_C3_BSWP;
/* Copy Ethernet hardware address from NVRAM */
for (i=0; i < 6; i++)
sc->sc_enaddr[i] = id[i*4+3]; /* XXX */
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;
sc->sc_hwinit = NULL;
evcnt_attach_dynamic(&lesc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
self->dv_xname, "intr");
bus_intr_establish(lesc->sc_bustag, SYS_INTR_ETHER, 0, 0,
le_intr, lesc);
am7990_config(&lesc->sc_am7990);
return;
bad:
bus_dmamem_unmap(dmat, kvaddr, LE_MEMSIZE);
bus_dmamem_free(dmat, &seg, rseg);
}
int
le_intr(arg)
void *arg;
{
struct le_softc *lesc = arg;
lesc->sc_intrcnt.ev_count++;
return am7990_intr(&lesc->sc_am7990);
}