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, 44 insertions, 0 deletions

diff --git a/sys/kern/clock_if.m b/sys/kern/clock_if.m
new file mode 100644
index 000000000000..3ddb25eb4bca
--- /dev/null
+++ b/sys/kern/clock_if.m
@@ -0,0 +1,44 @@
+# Copyright (c) 2001 by Thomas Moestl <tmm@FreeBSD.org>.
+# All rights reserved.
+#
+# 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.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+#
+# $FreeBSD$
+
+#include <sys/bus.h>
+#include <sys/time.h>
+
+INTERFACE clock;
+
+# Interface for clock drivers. This is inspired by the NetBSD device-independent
+# clock code (by Gordon W. Ross).
+
+# An EINVAL error return from this call signifies that the clock has an illegal
+# setting.
+METHOD int gettime {
+	device_t dev;
+	struct timespec *ts;
+};
+
+METHOD int settime {
+	device_t dev;
+	struct timespec *ts;
+};