1/*	$NetBSD: if_bah_zbus.c,v 1.13 2010/10/18 22:02:25 phx Exp $ */
2
3/*-
4 * Copyright (c) 1994, 1995, 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Ignatios Souvatzis.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifdef __m68k__
33#include "opt_m68k_arch.h"
34#endif
35
36#include <sys/cdefs.h>
37__KERNEL_RCSID(0, "$NetBSD: if_bah_zbus.c,v 1.13 2010/10/18 22:02:25 phx Exp $");
38
39/*
40 * Driver frontend for the Commodore Busines Machines and the
41 * Ameristar ARCnet card.
42 */
43
44#include <sys/types.h>
45#include <sys/param.h>
46
47#include <sys/conf.h>
48#include <sys/device.h>
49#include <sys/mbuf.h>
50#include <sys/socket.h>
51#include <sys/systm.h>
52#include <sys/kernel.h>
53#include <sys/bus.h>
54
55#include <machine/cpu.h>
56#include <machine/intr.h>
57
58#include <net/if.h>
59#include <net/route.h>
60
61#include <net/if_arc.h>
62
63#include <amiga/amiga/device.h>
64#include <amiga/dev/zbusvar.h>
65
66#include <dev/ic/smc90cx6var.h>
67
68/*
69 * A2060 software status per interface
70 */
71struct bah_zbus_softc {
72	struct	bah_softc	sc_bah;
73	struct	bus_space_tag	sc_bst;
74	struct	isr		sc_isr;
75};
76
77int	bah_zbus_match(struct device *, struct cfdata *, void *);
78void	bah_zbus_attach(struct device *, struct device *, void *);
79void	bah_zbus_reset(struct bah_softc *, int);
80
81CFATTACH_DECL(bah_zbus, sizeof(struct bah_zbus_softc),
82    bah_zbus_match, bah_zbus_attach, NULL, NULL);
83
84int
85bah_zbus_match(struct device *parent, struct cfdata *cfp, void *aux)
86{
87	struct zbus_args *zap = aux;
88
89	if ((zap->manid == 514 || zap->manid == 1053) && zap->prodid == 9)
90		return (1);
91
92	return (0);
93}
94
95void
96bah_zbus_attach(struct device *parent, struct device *self, void *aux)
97{
98	struct bah_zbus_softc *bsc = (void *)self;
99	struct bah_softc *sc = &bsc->sc_bah;
100	struct zbus_args *zap = aux;
101
102#if (defined(BAH_DEBUG) && (BAH_DEBUG > 2))
103	printf("\n%s: attach(0x%x, 0x%x, 0x%x)\n",
104	    sc->sc_dev.dv_xname, parent, self, aux);
105#endif
106	bsc->sc_bst.base = (bus_addr_t)zap->va;
107	bsc->sc_bst.absm = &amiga_bus_stride_2;
108
109	sc->sc_bst_r = &bsc->sc_bst;
110	sc->sc_regs = bsc->sc_bst.base + 0x4000;
111
112	sc->sc_bst_m = &bsc->sc_bst;
113	sc->sc_mem = bsc->sc_bst.base + 0x8000;
114
115	sc->sc_reset = bah_zbus_reset;
116
117	bah_attach_subr(sc);
118
119	bsc->sc_isr.isr_intr = bahintr;
120	bsc->sc_isr.isr_arg = sc;
121	bsc->sc_isr.isr_ipl = 2;
122	add_isr(&bsc->sc_isr);
123}
124
125void
126bah_zbus_reset(struct bah_softc *sc, int onoff)
127{
128	struct bah_zbus_softc *bsc;
129	volatile u_int8_t *p;
130
131	bsc = (struct bah_zbus_softc *)sc;
132
133	p = (volatile u_int8_t *)bsc->sc_bst.base;
134
135	p[0x0000] = 0;	/* A2060 reset flipflop */
136	p[0xc000] = 0;	/* A560 reset flipflop */
137
138	if (!onoff)
139		return;
140
141#ifdef M68060
142	/* make sure we flush the store buffer before the delay */
143	(void)p[0x8000];
144#endif
145	DELAY(200);
146
147	p[0x0000] = 0xff;
148	p[0xc000] = 0xff;
149
150	return;
151}
152