Annotation of sys/arch/alpha/tc/mcclock_ioasic.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: mcclock_ioasic.c,v 1.6 2002/05/02 22:56:06 miod Exp $ */
2: /* $NetBSD: mcclock_ioasic.c,v 1.9 2000/07/04 02:37:51 nisimura Exp $ */
3:
4: /*
5: * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
6: * All rights reserved.
7: *
8: * Author: Chris G. Demetriou
9: *
10: * Permission to use, copy, modify and distribute this software and
11: * its documentation is hereby granted, provided that both the copyright
12: * notice and this permission notice appear in all copies of the
13: * software, derivative works or modified versions, and any portions
14: * thereof, and that both notices appear in supporting documentation.
15: *
16: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
17: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
18: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19: *
20: * Carnegie Mellon requests users of this software to return to
21: *
22: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
23: * School of Computer Science
24: * Carnegie Mellon University
25: * Pittsburgh PA 15213-3890
26: *
27: * any improvements or extensions that they make and grant Carnegie the
28: * rights to redistribute these changes.
29: */
30:
31: #include <sys/param.h>
32: #include <sys/kernel.h>
33: #include <sys/systm.h>
34: #include <sys/device.h>
35:
36: #include <dev/dec/clockvar.h>
37: #include <dev/dec/mcclockvar.h>
38: #include <dev/ic/mc146818reg.h>
39: #include <dev/tc/tcvar.h>
40: #include <dev/tc/ioasicvar.h> /* XXX */
41:
42: struct mcclock_ioasic_clockdatum {
43: u_char datum;
44: char pad[3];
45: };
46:
47: struct mcclock_ioasic_softc {
48: struct mcclock_softc sc_mcclock;
49:
50: struct mcclock_ioasic_clockdatum *sc_dp;
51: };
52:
53: int mcclock_ioasic_match(struct device *, void *, void *);
54: void mcclock_ioasic_attach(struct device *, struct device *, void *);
55:
56: struct cfattach mcclock_ioasic_ca = {
57: sizeof (struct mcclock_ioasic_softc), mcclock_ioasic_match,
58: mcclock_ioasic_attach,
59: };
60:
61: void mcclock_ioasic_write(struct mcclock_softc *, u_int, u_int);
62: u_int mcclock_ioasic_read(struct mcclock_softc *, u_int);
63:
64: const struct mcclock_busfns mcclock_ioasic_busfns = {
65: mcclock_ioasic_write, mcclock_ioasic_read,
66: };
67:
68: int
69: mcclock_ioasic_match(parent, match, aux)
70: struct device *parent;
71: void *match, *aux;
72: {
73: struct ioasicdev_attach_args *d = aux;
74:
75: if (strncmp("TOY_RTC ", d->iada_modname, TC_ROM_LLEN))
76: return (0);
77:
78: return (1);
79: }
80:
81: void
82: mcclock_ioasic_attach(parent, self, aux)
83: struct device *parent, *self;
84: void *aux;
85: {
86: struct ioasicdev_attach_args *ioasicdev = aux;
87: struct mcclock_ioasic_softc *sc = (struct mcclock_ioasic_softc *)self;
88:
89: sc->sc_dp = (struct mcclock_ioasic_clockdatum *)ioasicdev->iada_addr;
90:
91: mcclock_attach(&sc->sc_mcclock, &mcclock_ioasic_busfns);
92: }
93:
94: void
95: mcclock_ioasic_write(dev, reg, datum)
96: struct mcclock_softc *dev;
97: u_int reg, datum;
98: {
99: struct mcclock_ioasic_softc *sc = (struct mcclock_ioasic_softc *)dev;
100:
101: sc->sc_dp[reg].datum = datum;
102: }
103:
104: u_int
105: mcclock_ioasic_read(dev, reg)
106: struct mcclock_softc *dev;
107: u_int reg;
108: {
109: struct mcclock_ioasic_softc *sc = (struct mcclock_ioasic_softc *)dev;
110:
111: return (sc->sc_dp[reg].datum);
112: }
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