[BACK]Return to clock_subr.h CVS log [TXT][DIR] Up to [cvs.NetBSD.org] / src / sys / dev

File: [cvs.NetBSD.org] / src / sys / dev / clock_subr.h (download)

Revision 1.19, Sat Sep 16 00:50:52 2006 UTC (17 years, 6 months ago) by gdamore
Branch: MAIN
CVS Tags: yamt-x86pmap-base4, yamt-x86pmap-base3, yamt-x86pmap-base2, yamt-x86pmap-base, yamt-x86pmap, yamt-splraiseipl-base5, yamt-splraiseipl-base4, yamt-splraiseipl-base3, yamt-splraiseipl-base2, yamt-splraiseipl-base, yamt-splraiseipl, yamt-pf42-baseX, yamt-pf42-base, yamt-nfs-mp-base, yamt-lazymbuf-base15, yamt-lazymbuf-base14, yamt-kmem-base3, yamt-kmem-base2, yamt-kmem-base, yamt-kmem, yamt-idlelwp-base8, yamt-idlelwp, wrstuden-fixsa-newbase, wrstuden-fixsa-base-1, wrstuden-fixsa-base, wrstuden-fixsa, vmlocking2-base3, vmlocking2-base2, vmlocking2-base1, vmlocking2, vmlocking-nbase, vmlocking-base, vmlocking, thorpej-atomic-base, thorpej-atomic, reinoud-bufcleanup-nbase, reinoud-bufcleanup-base, reinoud-bufcleanup, post-newlock2-merge, nick-net80211-sync-base, nick-net80211-sync, nick-csl-alignment-base5, nick-csl-alignment-base, nick-csl-alignment, newlock2-nbase, newlock2-base, netbsd-4-base, netbsd-4-0-RELEASE, netbsd-4-0-RC5, netbsd-4-0-RC4, netbsd-4-0-RC3, netbsd-4-0-RC2, netbsd-4-0-RC1, netbsd-4-0-1-RELEASE, netbsd-4-0, netbsd-4, mjf-ufs-trans-base, mjf-ufs-trans, mjf-devfs-base, mjf-devfs, matt-nb4-arm-base, matt-nb4-arm, matt-mips64-base, matt-mips64, matt-armv6-prevmlocking, matt-armv6-nbase, matt-armv6-base, matt-armv6, keiichi-mipv6-nbase, keiichi-mipv6-base, keiichi-mipv6, jmcneill-pm-base, jmcneill-pm, jmcneill-base, hpcarm-cleanup-base, hpcarm-cleanup, cube-autoconf-base, cube-autoconf, bouyer-xeni386-nbase, bouyer-xeni386-merge1, bouyer-xeni386-base, bouyer-xeni386, bouyer-xenamd64-base2, bouyer-xenamd64-base, bouyer-xenamd64, ad-socklock-base1, ad-audiomp-base, ad-audiomp
Branch point for: yamt-pf42, yamt-nfs-mp, mjf-devfs2
Changes since 1.18: +3 -1 lines

Pass the filesystem time to clock drivers in the todr_chip_handle, so that
vax, and pmax can use it.

/*	$NetBSD: clock_subr.h,v 1.19 2006/09/16 00:50:52 gdamore Exp $	*/

/*-
 * 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.
 */

#ifndef _DEV_CLOCK_SUBR_H_
#define _DEV_CLOCK_SUBR_H_

/*
 * "POSIX time" to/from "YY/MM/DD/hh/mm/ss"
 */
struct clock_ymdhms {
	u_short dt_year;
	u_char dt_mon;
	u_char dt_day;
	u_char dt_wday;	/* Day of week */
	u_char dt_hour;
	u_char dt_min;
	u_char dt_sec;
};

time_t	clock_ymdhms_to_secs(struct clock_ymdhms *);
void	clock_secs_to_ymdhms(time_t, struct clock_ymdhms *);

/*
 * BCD to binary and binary to BCD.
 */
#define	FROMBCD(x)	bcdtobin((x))
#define	TOBCD(x)	bintobcd((x))

/* Some handy constants. */
#define SECDAY		(24 * 60 * 60)
#define SECYR		(SECDAY * 365)

/* Traditional POSIX base year */
#define	POSIX_BASE_YEAR	1970

/*
 * Interface to time-of-day clock devices.
 *
 * todr_gettime: convert time-of-day clock into a `struct timeval'
 * todr_settime: set time-of-day clock from a `struct timeval'
 *
 * (this is probably not so useful:)
 * todr_setwen: provide a machine-dependent TOD clock write-enable callback
 *		function which takes one boolean argument:
 *			1 to enable writes; 0 to disable writes.
 */
struct todr_chip_handle {
	void	*cookie;	/* Device specific data */
	void	*bus_cookie;	/* Bus specific data */
	time_t	base_time;	/* Base time (e.g. rootfs time) */

	int	(*todr_gettime)(struct todr_chip_handle *,
				volatile struct timeval *);
	int	(*todr_settime)(struct todr_chip_handle *,
				volatile struct timeval *);
	int	(*todr_gettime_ymdhms)(struct todr_chip_handle *,
	    			struct clock_ymdhms *);
	int	(*todr_settime_ymdhms)(struct todr_chip_handle *,
	    			struct clock_ymdhms *);
	int	(*todr_setwen)(struct todr_chip_handle *, int);

};
typedef struct todr_chip_handle *todr_chip_handle_t;

#define todr_wenable(ct, v)	if ((ct)->todr_setwen) \
					((*(ct)->todr_setwen)(ct, v))

/*
 * Probably these should evolve into internal routines in kern_todr.c.
 */
extern int todr_gettime(todr_chip_handle_t tch, volatile struct timeval *);
extern int todr_settime(todr_chip_handle_t tch, volatile struct timeval *);

/*
 * Machine-dependent function that machine-independent RTC drivers can
 * use to register their todr_chip_handle_t with inittodr()/resettodr().
 */
void	todr_attach(todr_chip_handle_t);

#endif /* _DEV_CLOCK_SUBR_H_ */