xref: /titanic_52/usr/src/uts/i86pc/sys/machclock.h (revision a49a392f179e40c74ea8903bf2793b2aa49efdf1)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef	_SYS_MACHCLOCK_H
28 #define	_SYS_MACHCLOCK_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #ifdef __cplusplus
33 extern "C" {
34 #endif
35 
36 /*
37  * tod module name and operations
38  */
39 
40 struct tod_ops;
41 typedef struct tod_ops tod_ops_t;
42 
43 struct tod_ops {
44 	int		tod_version;
45 	timestruc_t	(*tod_get)(tod_ops_t *);
46 	void		(*tod_set)(tod_ops_t *, timestruc_t);
47 	/*
48 	 * On SPARC, additional operations include setting
49 	 * and clearing a watchdog timer, as well as power alarms.
50 	 */
51 	struct tod_ops	*tod_next;
52 };
53 
54 #define	TOD_OPS_VERSION	1
55 
56 extern tod_ops_t	*tod_ops;
57 extern char		*tod_module_name;
58 
59 #define	TODOP_GET(top)		((top)->tod_get(top))
60 #define	TODOP_SET(top, ts)	((top)->tod_set(top, ts))
61 
62 #ifdef	__cplusplus
63 }
64 #endif
65 
66 #endif	/* _SYS_MACHCLOCK_H */
67