1 /* $NetBSD: a2kbbc.c,v 1.26 2013/01/27 19:58:04 rkujawa Exp $ */
2
3 /*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1982, 1990 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: Utah $Hdr: clock.c 1.18 91/01/21$
37 *
38 * @(#)clock.c 7.6 (Berkeley) 5/7/91
39 */
40
41 #include <sys/cdefs.h>
42 __KERNEL_RCSID(0, "$NetBSD: a2kbbc.c,v 1.26 2013/01/27 19:58:04 rkujawa Exp $");
43
44 #include <sys/param.h>
45 #include <sys/kernel.h>
46 #include <sys/device.h>
47 #include <sys/systm.h>
48 #include <sys/bus.h>
49 #include <machine/psl.h>
50 #include <machine/cpu.h>
51 #include <amiga/amiga/device.h>
52 #include <amiga/amiga/custom.h>
53 #include <amiga/amiga/cia.h>
54 #include <amiga/dev/zbusvar.h>
55
56 #include <dev/clock_subr.h>
57
58 #include <dev/ic/msm6242bvar.h>
59 #include <dev/ic/msm6242breg.h>
60
61 #define A2KBBC_ADDR 0xDC0000 /* XXX: possible D80000 on A2000 "A"? */
62
63 static int a2kbbc_match(device_t, cfdata_t, void *);
64 static void a2kbbc_attach(device_t, device_t, void *);
65
66 struct a2kbbc_softc {
67 struct msm6242b_softc sc_msm6242b;
68 struct bus_space_tag sc_bst;
69 };
70
71 CFATTACH_DECL_NEW(a2kbbc, sizeof(struct a2kbbc_softc),
72 a2kbbc_match, a2kbbc_attach, NULL, NULL);
73
74 static int
a2kbbc_match(device_t parent,cfdata_t cf,void * aux)75 a2kbbc_match(device_t parent, cfdata_t cf, void *aux)
76 {
77 static int a2kbbc_matched = 0;
78
79 if (!matchname("a2kbbc", aux))
80 return (0);
81
82 /* Allow only one instance. */
83 if (a2kbbc_matched)
84 return (0);
85
86 if (/* is_a1200() || */ is_a3000() || is_a4000()
87 #ifdef DRACO
88 || is_draco()
89 #endif
90 )
91 return (0);
92
93 a2kbbc_matched = 1;
94 return (1);
95 }
96
97 /*
98 * Attach us to the rtc function pointers.
99 */
100 void
a2kbbc_attach(device_t parent,device_t self,void * aux)101 a2kbbc_attach(device_t parent, device_t self, void *aux)
102 {
103 struct a2kbbc_softc *sc;
104 struct msm6242b_softc *msc;
105
106 sc = device_private(self);
107 msc = &sc->sc_msm6242b;
108 msc->sc_dev = self;
109
110 sc->sc_bst.base = (bus_addr_t) __UNVOLATILE(ztwomap(A2KBBC_ADDR+1));
111 sc->sc_bst.absm = &amiga_bus_stride_4;
112
113 msc->sc_iot = &sc->sc_bst;
114
115 if (bus_space_map(msc->sc_iot, 0, MSM6242B_SIZE, 0, &msc->sc_ioh)) {
116 aprint_error_dev(msc->sc_dev, "couldn't map registers\n");
117 return;
118 }
119
120 msm6242b_attach(msc);
121 }
122
123
124