/* $NetBSD: if_mbe_g2.c,v 1.9 2018/07/18 23:10:27 sevan Exp $ */
/*
* Copyright (c) 2002 Christian Groessler
* All rights reserved.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/*
* All Rights Reserved, Copyright (C) Fujitsu Limited 1995
*
* This software may be used, modified, copied, distributed, and sold, in
* both source and binary form provided that the above copyright, these
* terms and the following disclaimer are retained. The name of the author
* and/or the contributor may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND THE CONTRIBUTOR ``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 AUTHOR OR THE CONTRIBUTOR 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.
*/
/*
* Portions copyright (C) 1993, David Greenman. This software may be used,
* modified, copied, distributed, and sold, in both source and binary form
* provided that the above copyright and these terms are retained. Under no
* circumstances is the author responsible for the proper functioning of this
* software, nor does the author assume any responsibility for damages
* incurred with its use.
*/
/*
* Driver for Sega LAN Adapter (HIT-0300)
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_mbe_g2.c,v 1.9 2018/07/18 23:10:27 sevan Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/bus.h>
#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <machine/intr.h>
#include <machine/sysasicvar.h>
#include <machine/cpu.h>
#include <dev/ic/mb86960reg.h>
#include <dev/ic/mb86960var.h>
#include <dreamcast/dev/g2/g2busvar.h>
int mbe_g2_match(device_t, cfdata_t, void *);
void mbe_g2_attach(device_t, device_t, void *);
static int mbe_g2_detect(bus_space_tag_t, bus_space_handle_t, uint8_t *);
struct mbe_g2_softc {
struct mb86960_softc sc_mb86960; /* real "mb86960" softc */
};
CFATTACH_DECL_NEW(mbe_g2bus, sizeof(struct mbe_g2_softc),
mbe_g2_match, mbe_g2_attach, NULL, NULL);
#define LANA_NPORTS (0x20 * 4)
#ifdef LANA_DEBUG
#define DPRINTF printf
#else
#define DPRINTF while (/* CONSTCOND */0) printf
#endif
static struct dreamcast_bus_space mbe_g2_dbs;
/*
* Determine if the device is present.
*/
int
mbe_g2_match(device_t parent, cfdata_t cf, void *aux)
{
struct g2bus_attach_args *ga = aux;
bus_space_handle_t memh;
struct dreamcast_bus_space dbs;
bus_space_tag_t memt = &dbs;
static int lanafound;
int rv;
uint8_t myea[ETHER_ADDR_LEN];
if (lanafound)
return 0;
if (strcmp("mbe", cf->cf_name))
return 0;
memcpy(memt, ga->ga_memt, sizeof(struct dreamcast_bus_space));
g2bus_set_bus_mem_sparse(memt);
/* Map i/o ports. */
if (bus_space_map(memt, 0x00600400, LANA_NPORTS, 0, &memh)) {
DPRINTF("%s: couldn't map iospace 0x%x\n",
__func__, 0x00600400);
return 0;
}
rv = 0;
if (mbe_g2_detect(memt, memh, myea) == 0) {
DPRINTF("%s: LAN Adapter detection failed\n", __func__);
goto out;
}
rv = 1;
lanafound = 1;
out:
bus_space_unmap(memt, memh, LANA_NPORTS);
return rv;
}
/*
* Determine type and ethernet address.
*/
static int
mbe_g2_detect(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t *enaddr)
{
uint8_t eeprom[FE_EEPROM_SIZE];
/* Read the chip type */
if ((bus_space_read_1(iot, ioh, FE_DLCR7) & FE_D7_IDENT) !=
FE_D7_IDENT_86967) {
DPRINTF("%s: unknown chip type\n", __func__);
return 0;
}
memset(eeprom, 0, FE_EEPROM_SIZE);
/* Get our station address from EEPROM. */
mb86965_read_eeprom(iot, ioh, eeprom);
memcpy(enaddr, eeprom, ETHER_ADDR_LEN);
DPRINTF("Ethernet address %s\n", ether_sprintf(enaddr));
/* Make sure we got a valid station address. */
if ((enaddr[0] & 0x03) != 0x00 ||
(enaddr[0] == 0x00 && enaddr[1] == 0x00 && enaddr[2] == 0x00)) {
DPRINTF("%s: invalid ethernet address\n", __func__);
return 0;
}
return 1;
}
void
mbe_g2_attach(device_t parent, device_t self, void *aux)
{
struct mbe_g2_softc *isc = device_private(self);
struct mb86960_softc *sc = &isc->sc_mb86960;
struct g2bus_attach_args *ga = aux;
bus_space_tag_t memt = &mbe_g2_dbs;
bus_space_handle_t memh;
uint8_t myea[ETHER_ADDR_LEN];
sc->sc_dev = self;
memcpy(memt, ga->ga_memt, sizeof(struct dreamcast_bus_space));
g2bus_set_bus_mem_sparse(memt);
/* Map i/o ports. */
if (bus_space_map(memt, 0x00600400, LANA_NPORTS, 0, &memh)) {
aprint_error(": can't map i/o space\n");
return;
}
sc->sc_bst = memt;
sc->sc_bsh = memh;
/* Determine the card type. */
if (mbe_g2_detect(memt, memh, myea) == 0) {
aprint_error(": where did the card go?!\n");
panic("unknown card");
}
aprint_normal(": Sega LAN-Adapter Ethernet\n");
/* This interface is always enabled. */
sc->sc_stat |= FE_STAT_ENABLED;
/* The LAN-Adapter uses 8 bit bus mode and slow SRAM. */
sc->sc_flags |= FE_FLAGS_SBW_BYTE | FE_FLAGS_SRAM_150ns;
/*
* Do generic MB86960 attach.
*/
mb86960_attach(sc, myea);
mb86960_config(sc, NULL, 0, 0);
sysasic_intr_establish(SYSASIC_EVENT_8BIT, IPL_NET, SYSASIC_IRL11,
mb86960_intr, sc);
}