1 /* $NetBSD: if_bah_zbus.c,v 1.18 2020/02/24 12:20:29 rin 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 1.18 2020/02/24 12:20:29 rin 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 */
71 struct bah_zbus_softc {
72 struct bah_softc sc_bah;
73 struct bus_space_tag sc_bst;
74 struct isr sc_isr;
75 };
76
77 int bah_zbus_match(device_t, cfdata_t, void *);
78 void bah_zbus_attach(device_t, device_t, void *);
79 void bah_zbus_reset(struct bah_softc *, int);
80
81 CFATTACH_DECL_NEW(bah_zbus, sizeof(struct bah_zbus_softc),
82 bah_zbus_match, bah_zbus_attach, NULL, NULL);
83
84 int
bah_zbus_match(device_t parent,cfdata_t cf,void * aux)85 bah_zbus_match(device_t parent, cfdata_t cf, 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
95 void
bah_zbus_attach(device_t parent,device_t self,void * aux)96 bah_zbus_attach(device_t parent, device_t self, void *aux)
97 {
98 struct bah_zbus_softc *bsc = device_private(self);
99 struct bah_softc *sc = &bsc->sc_bah;
100 struct zbus_args *zap = aux;
101 int rv;
102
103 sc->sc_dev = self;
104 #if (defined(BAH_DEBUG) && (BAH_DEBUG > 2))
105 printf("\n%s: attach(%p, %p, %p)\n",
106 device_xname(self), parent, self, aux);
107 #endif
108 bsc->sc_bst.base = (bus_addr_t)zap->va;
109 bsc->sc_bst.absm = &amiga_bus_stride_2;
110
111 sc->sc_bst_r = &bsc->sc_bst;
112 sc->sc_regs = bsc->sc_bst.base + 0x4000;
113
114 sc->sc_bst_m = &bsc->sc_bst;
115 sc->sc_mem = bsc->sc_bst.base + 0x8000;
116
117 sc->sc_reset = bah_zbus_reset;
118
119 rv = bah_attach_subr(sc);
120 if (rv != 0) {
121 aprint_error_dev(self, "bah_attach_subr failed(%d)\n", rv);
122 return;
123 }
124
125 bsc->sc_isr.isr_intr = bahintr;
126 bsc->sc_isr.isr_arg = sc;
127 bsc->sc_isr.isr_ipl = 2;
128 add_isr(&bsc->sc_isr);
129 }
130
131 void
bah_zbus_reset(struct bah_softc * sc,int onoff)132 bah_zbus_reset(struct bah_softc *sc, int onoff)
133 {
134 struct bah_zbus_softc *bsc;
135 volatile u_int8_t *p;
136
137 bsc = (struct bah_zbus_softc *)sc;
138
139 p = (volatile u_int8_t *)bsc->sc_bst.base;
140
141 p[0x0000] = 0; /* A2060 reset flipflop */
142 p[0xc000] = 0; /* A560 reset flipflop */
143
144 if (!onoff)
145 return;
146
147 #ifdef M68060
148 /* make sure we flush the store buffer before the delay */
149 (void)p[0x8000];
150 #endif
151 DELAY(200);
152
153 p[0x0000] = 0xff;
154 p[0xc000] = 0xff;
155
156 return;
157 }
158