Add a generic implementation of inittodr() and resettodr(), as well as

a set of helper routines to deal with real-time clocks. The generic
functions access the clock diver using a kobj interface. This is intended
to reduce code reduplication and make it easy to support more than one
clock model on a single architecture.

This code is currently only used on sparc64, but it is planned to convert
the code of the other architectures to it later.

1 files changed, 77 insertions, 0 deletions

diff --git a/sys/sys/clock.h b/sys/sys/clock.h
new file mode 100644
index 0000000..1c71d0e
--- /dev/null
+++ b/sys/sys/clock.h
@@ -0,0 +1,77 @@
+/*-
+ * Copyright (c) 1996 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Gordon W. Ross
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$NetBSD: clock_subr.h,v 1.7 2000/10/03 13:41:07 tsutsui Exp $
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _SYS_CLOCK_H_
+#define _SYS_CLOCK_H_
+
+/*
+ * Structure to hold the values typically reported by time-of-day clocks.
+ * This can be passed to the generic conversion functions to be converted
+ * to a struct timespec.
+ */
+struct clocktime {
+	int	year;			/* year - 1900 */
+	int	mon;			/* month (1 - 12) */
+	int	day;			/* day (1 - 31) */
+	int	hour;			/* hour (0 - 23) */
+	int	min;			/* minute (0 - 59) */
+	int	sec;			/* second (0 - 59) */
+	int	dow;			/* day of week (0 - 6; 0 = Sunday) */
+	long	nsec;			/* nano seconds */
+};
+
+int clock_ct_to_ts(struct clocktime *, struct timespec *);
+void clock_ts_to_ct(struct timespec *, struct clocktime *);
+void clock_register(device_t, long);
+
+/*
+ * BCD to decimal and decimal to BCD.
+ */
+#define	FROMBCD(x)	(((x) >> 4) * 10 + ((x) & 0xf))
+#define	TOBCD(x)	(((x) / 10 * 16) + ((x) % 10))
+
+/* Some handy constants. */
+#define SECDAY		(24 * 60 * 60)
+#define SECYR		(SECDAY * 365)
+
+/* Traditional POSIX base year */
+#define	POSIX_BASE_YEAR	1970
+
+#endif /* !_SYS_CLOCK_H_ */