1 /* $NetBSD: ioblix_zbus.c,v 1.21 2021/08/07 16:18:41 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2000 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 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: ioblix_zbus.c,v 1.21 2021/08/07 16:18:41 thorpej Exp $");
34
35 /* IOBlix Zorro driver */
36 /* XXX to be done: we need to probe the com clock speed! */
37
38 #include <sys/types.h>
39
40 #include <sys/device.h>
41 #include <sys/conf.h>
42 #include <sys/systm.h>
43 #include <sys/param.h>
44 #include <sys/bus.h>
45
46 #include <amiga/include/cpu.h>
47
48 #include <amiga/amiga/device.h>
49 #include <amiga/amiga/drcustom.h>
50
51 #include <amiga/dev/supio.h>
52 #include <amiga/dev/zbusvar.h>
53
54 #include "opt_iobzclock.h"
55
56 struct iobz_softc {
57 struct bus_space_tag sc_bst;
58 };
59
60 int iobzmatch(device_t, cfdata_t, void *);
61 void iobzattach(device_t, device_t, void *);
62 int iobzprint(void *, const char *);
63 void iobz_shutdown(void *);
64
65 CFATTACH_DECL_NEW(iobl_zbus, sizeof(struct iobz_softc),
66 iobzmatch, iobzattach, NULL, NULL);
67
68 int
iobzmatch(device_t parent,cfdata_t cf,void * aux)69 iobzmatch(device_t parent, cfdata_t cf, void *aux)
70 {
71
72 struct zbus_args *zap;
73
74 zap = aux;
75
76 if (zap->manid != 4711)
77 return (0);
78
79 if (zap->prodid != 1)
80 return (0);
81
82 return (1);
83 }
84
85 struct iobz_devs {
86 const char *name;
87 unsigned off;
88 int arg;
89 } iobzdevices[] = {
90 { "com", 0x108, 24000000 }, /* XXX see below */
91 { "com", 0x100, 24000000 },
92 { "com", 0x118, 24000000 },
93 { "com", 0x110, 24000000 },
94 { "lpt", 0x200, 0 },
95 { "lpt", 0x300, 0 },
96 { 0, 0, 0}
97 };
98
99 #ifndef IOBZCLOCK
100 #define IOBZCLOCK 22118400;
101 #endif
102 int iobzclock = IOBZCLOCK; /* patchable! */
103
104 void
iobzattach(device_t parent,device_t self,void * aux)105 iobzattach(device_t parent, device_t self, void *aux)
106 {
107 struct iobz_softc *iobzsc;
108 struct iobz_devs *iobzd;
109 struct zbus_args *zap;
110 struct supio_attach_args supa;
111 extern const struct amiga_bus_space_methods amiga_bus_stride_16;
112 volatile u_int8_t *p;
113
114
115 iobzsc = device_private(self);
116 zap = aux;
117
118 if (parent)
119 printf("\n");
120
121 iobzsc->sc_bst.base = (u_long)zap->va;
122 iobzsc->sc_bst.absm = &amiga_bus_stride_16;
123
124 supa.supio_iot = &iobzsc->sc_bst;
125 supa.supio_ipl = 6;
126
127 iobzd = iobzdevices;
128
129 while (iobzd->name) {
130 supa.supio_name = iobzd->name;
131 supa.supio_iobase = iobzd->off;
132 supa.supio_arg = iobzd->arg ? iobzclock : 0 /* XXX iobzd->arg */;
133 config_found(self, &supa, iobzprint, CFARGS_NONE); /* XXX */
134 ++iobzd;
135 }
136
137 p = (volatile u_int8_t *)zap->va + 2;
138 (void)shutdownhook_establish(iobz_shutdown, __UNVOLATILE(p));
139 *p = ((*p) & 0x1F) | 0x80;
140 }
141
142 int
iobzprint(void * aux,const char * pnp)143 iobzprint(void *aux, const char *pnp)
144 {
145 struct supio_attach_args *supa;
146 supa = aux;
147
148 if (pnp == NULL)
149 return(QUIET);
150
151 aprint_normal("%s at %s port 0x%02x",
152 supa->supio_name, pnp, supa->supio_iobase);
153
154 return(UNCONF);
155 }
156
157 /*
158 * Disable board interrupts at shutdown time.
159 */
160
161 void
iobz_shutdown(void * p)162 iobz_shutdown(void *p) {
163 volatile int8_t *q;
164
165 q = p;
166
167 *q &= 0x1F;
168 }
169