/* $NetBSD: if_bah_zbus.c,v 1.18 2020/02/24 12:20:29 rin Exp $ */
/*-
* Copyright (c) 1994, 1995, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ignatios Souvatzis.
*
* 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.
*/
#ifdef __m68k__
#include "opt_m68k_arch.h"
#endif
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_bah_zbus.c,v 1.18 2020/02/24 12:20:29 rin Exp $");
/*
* Driver frontend for the Commodore Busines Machines and the
* Ameristar ARCnet card.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <machine/cpu.h>
#include <machine/intr.h>
#include <net/if.h>
#include <net/route.h>
#include <net/if_arc.h>
#include <amiga/amiga/device.h>
#include <amiga/dev/zbusvar.h>
#include <dev/ic/smc90cx6var.h>
/*
* A2060 software status per interface
*/
struct bah_zbus_softc {
struct bah_softc sc_bah;
struct bus_space_tag sc_bst;
struct isr sc_isr;
};
int bah_zbus_match(device_t, cfdata_t, void *);
void bah_zbus_attach(device_t, device_t, void *);
void bah_zbus_reset(struct bah_softc *, int);
CFATTACH_DECL_NEW(bah_zbus, sizeof(struct bah_zbus_softc),
bah_zbus_match, bah_zbus_attach, NULL, NULL);
int
bah_zbus_match(device_t parent, cfdata_t cf, void *aux)
{
struct zbus_args *zap = aux;
if ((zap->manid == 514 || zap->manid == 1053) && zap->prodid == 9)
return (1);
return (0);
}
void
bah_zbus_attach(device_t parent, device_t self, void *aux)
{
struct bah_zbus_softc *bsc = device_private(self);
struct bah_softc *sc = &bsc->sc_bah;
struct zbus_args *zap = aux;
int rv;
sc->sc_dev = self;
#if (defined(BAH_DEBUG) && (BAH_DEBUG > 2))
printf("\n%s: attach(%p, %p, %p)\n",
device_xname(self), parent, self, aux);
#endif
bsc->sc_bst.base = (bus_addr_t)zap->va;
bsc->sc_bst.absm = &amiga_bus_stride_2;
sc->sc_bst_r = &bsc->sc_bst;
sc->sc_regs = bsc->sc_bst.base + 0x4000;
sc->sc_bst_m = &bsc->sc_bst;
sc->sc_mem = bsc->sc_bst.base + 0x8000;
sc->sc_reset = bah_zbus_reset;
rv = bah_attach_subr(sc);
if (rv != 0) {
aprint_error_dev(self, "bah_attach_subr failed(%d)\n", rv);
return;
}
bsc->sc_isr.isr_intr = bahintr;
bsc->sc_isr.isr_arg = sc;
bsc->sc_isr.isr_ipl = 2;
add_isr(&bsc->sc_isr);
}
void
bah_zbus_reset(struct bah_softc *sc, int onoff)
{
struct bah_zbus_softc *bsc;
volatile u_int8_t *p;
bsc = (struct bah_zbus_softc *)sc;
p = (volatile u_int8_t *)bsc->sc_bst.base;
p[0x0000] = 0; /* A2060 reset flipflop */
p[0xc000] = 0; /* A560 reset flipflop */
if (!onoff)
return;
#ifdef M68060
/* make sure we flush the store buffer before the delay */
(void)p[0x8000];
#endif
DELAY(200);
p[0x0000] = 0xff;
p[0xc000] = 0xff;
return;
}
