File: [local] / sys / sys / time.h (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:16:14 2008 UTC (16 years, 2 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: time.h,v 1.25 2007/05/09 17:42:19 deraadt Exp $ */
/* $NetBSD: time.h,v 1.18 1996/04/23 10:29:33 mycroft Exp $ */
/*
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. 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.
* 3. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* @(#)time.h 8.2 (Berkeley) 7/10/94
*/
#ifndef _SYS_TIME_H_
#define _SYS_TIME_H_
#include <sys/cdefs.h>
#include <sys/types.h>
#if __XPG_VISIBLE >= 420 && __XPG_VISIBLE < 600
#include <sys/select.h>
#endif
/*
* Structure returned by gettimeofday(2) system call,
* and used in other calls.
*/
struct timeval {
long tv_sec; /* seconds */
long tv_usec; /* and microseconds */
};
#ifndef _TIMESPEC_DECLARED
#define _TIMESPEC_DECLARED
/*
* Structure defined by POSIX.1b to be like a timeval.
*/
struct timespec {
time_t tv_sec; /* seconds */
long tv_nsec; /* and nanoseconds */
};
#endif
#define TIMEVAL_TO_TIMESPEC(tv, ts) { \
(ts)->tv_sec = (tv)->tv_sec; \
(ts)->tv_nsec = (tv)->tv_usec * 1000; \
}
#define TIMESPEC_TO_TIMEVAL(tv, ts) { \
(tv)->tv_sec = (ts)->tv_sec; \
(tv)->tv_usec = (ts)->tv_nsec / 1000; \
}
struct timezone {
int tz_minuteswest; /* minutes west of Greenwich */
int tz_dsttime; /* type of dst correction */
};
#define DST_NONE 0 /* not on dst */
#define DST_USA 1 /* USA style dst */
#define DST_AUST 2 /* Australian style dst */
#define DST_WET 3 /* Western European dst */
#define DST_MET 4 /* Middle European dst */
#define DST_EET 5 /* Eastern European dst */
#define DST_CAN 6 /* Canada */
/* Operations on timevals. */
#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
#define timercmp(tvp, uvp, cmp) \
(((tvp)->tv_sec == (uvp)->tv_sec) ? \
((tvp)->tv_usec cmp (uvp)->tv_usec) : \
((tvp)->tv_sec cmp (uvp)->tv_sec))
#define timeradd(tvp, uvp, vvp) \
do { \
(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
if ((vvp)->tv_usec >= 1000000) { \
(vvp)->tv_sec++; \
(vvp)->tv_usec -= 1000000; \
} \
} while (0)
#define timersub(tvp, uvp, vvp) \
do { \
(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
if ((vvp)->tv_usec < 0) { \
(vvp)->tv_sec--; \
(vvp)->tv_usec += 1000000; \
} \
} while (0)
/* Operations on timespecs. */
#define timespecclear(tsp) (tsp)->tv_sec = (tsp)->tv_nsec = 0
#define timespecisset(tsp) ((tsp)->tv_sec || (tsp)->tv_nsec)
#define timespeccmp(tsp, usp, cmp) \
(((tsp)->tv_sec == (usp)->tv_sec) ? \
((tsp)->tv_nsec cmp (usp)->tv_nsec) : \
((tsp)->tv_sec cmp (usp)->tv_sec))
#define timespecadd(tsp, usp, vsp) \
do { \
(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec; \
(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec; \
if ((vsp)->tv_nsec >= 1000000000L) { \
(vsp)->tv_sec++; \
(vsp)->tv_nsec -= 1000000000L; \
} \
} while (0)
#define timespecsub(tsp, usp, vsp) \
do { \
(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec; \
(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec; \
if ((vsp)->tv_nsec < 0) { \
(vsp)->tv_sec--; \
(vsp)->tv_nsec += 1000000000L; \
} \
} while (0)
/* Time expressed as seconds and fractions of a second + operations on it. */
struct bintime {
time_t sec;
uint64_t frac;
};
static __inline void
bintime_addx(struct bintime *bt, uint64_t x)
{
uint64_t u;
u = bt->frac;
bt->frac += x;
if (u > bt->frac)
bt->sec++;
}
static __inline void
bintime_add(struct bintime *bt, struct bintime *bt2)
{
uint64_t u;
u = bt->frac;
bt->frac += bt2->frac;
if (u > bt->frac)
bt->sec++;
bt->sec += bt2->sec;
}
static __inline void
bintime_sub(struct bintime *bt, struct bintime *bt2)
{
uint64_t u;
u = bt->frac;
bt->frac -= bt2->frac;
if (u < bt->frac)
bt->sec--;
bt->sec -= bt2->sec;
}
/*-
* Background information:
*
* When converting between timestamps on parallel timescales of differing
* resolutions it is historical and scientific practice to round down rather
* than doing 4/5 rounding.
*
* The date changes at midnight, not at noon.
*
* Even at 15:59:59.999999999 it's not four'o'clock.
*
* time_second ticks after N.999999999 not after N.4999999999
*/
static __inline void
bintime2timespec(struct bintime *bt, struct timespec *ts)
{
ts->tv_sec = bt->sec;
ts->tv_nsec = (long)(((uint64_t)1000000000 * (uint32_t)(bt->frac >> 32)) >> 32);
}
static __inline void
timespec2bintime(struct timespec *ts, struct bintime *bt)
{
bt->sec = ts->tv_sec;
/* 18446744073 = int(2^64 / 1000000000) */
bt->frac = (uint64_t)ts->tv_nsec * (uint64_t)18446744073ULL;
}
static __inline void
bintime2timeval(struct bintime *bt, struct timeval *tv)
{
tv->tv_sec = bt->sec;
tv->tv_usec = (long)(((uint64_t)1000000 * (uint32_t)(bt->frac >> 32)) >> 32);
}
static __inline void
timeval2bintime(struct timeval *tv, struct bintime *bt)
{
bt->sec = (time_t)tv->tv_sec;
/* 18446744073709 = int(2^64 / 1000000) */
bt->frac = (uint64_t)tv->tv_usec * (uint64_t)18446744073709ULL;
}
/*
* Names of the interval timers, and structure
* defining a timer setting.
*/
#define ITIMER_REAL 0
#define ITIMER_VIRTUAL 1
#define ITIMER_PROF 2
struct itimerval {
struct timeval it_interval; /* timer interval */
struct timeval it_value; /* current value */
};
/*
* Structure defined by POSIX 1003.1b to be like a itimerval,
* but with timespecs. Used in the timer_*() system calls.
*/
struct itimerspec {
struct timespec it_interval; /* timer interval */
struct timespec it_value; /* timer expiration */
};
/*
* Getkerninfo clock information structure
*/
struct clockinfo {
int hz; /* clock frequency */
int tick; /* micro-seconds per hz tick */
int tickadj; /* clock skew rate for adjtime() */
int stathz; /* statistics clock frequency */
int profhz; /* profiling clock frequency */
};
#define CLOCK_REALTIME 0
#define CLOCK_VIRTUAL 1
#define CLOCK_PROF 2
#define CLOCK_MONOTONIC 3
#define TIMER_RELTIME 0x0 /* relative timer */
#define TIMER_ABSTIME 0x1 /* absolute timer */
#if defined(_KERNEL) || defined(_STANDALONE)
extern volatile time_t time_second; /* Seconds since epoch, wall time. */
extern volatile time_t time_uptime; /* Seconds since reboot. */
/*
* Functions for looking at our clock: [get]{bin,nano,micro}[up]time()
*
* Functions without the "get" prefix returns the best timestamp
* we can produce in the given format.
*
* "bin" == struct bintime == seconds + 64 bit fraction of seconds.
* "nano" == struct timespec == seconds + nanoseconds.
* "micro" == struct timeval == seconds + microseconds.
*
* Functions containing "up" returns time relative to boot and
* should be used for calculating time intervals.
*
* Functions without "up" returns GMT time.
*
* Functions with the "get" prefix returns a less precise result
* much faster than the functions without "get" prefix and should
* be used where a precision of 10 msec is acceptable or where
* performance is priority. (NB: "precision", _not_ "resolution" !)
*/
void bintime(struct bintime *);
void nanotime(struct timespec *);
void microtime(struct timeval *);
void getnanotime(struct timespec *);
void getmicrotime(struct timeval *);
void binuptime(struct bintime *);
void nanouptime(struct timespec *);
void microuptime(struct timeval *);
void getnanouptime(struct timespec *);
void getmicrouptime(struct timeval *);
int itimerfix(struct timeval *);
int itimerdecr(struct itimerval *itp, int usec);
int settime(struct timespec *);
int ratecheck(struct timeval *, const struct timeval *);
int ppsratecheck(struct timeval *, int *, int);
/*
* "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 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 86400L
#define SECYR (SECDAY * 365)
/* Traditional POSIX base year */
#define POSIX_BASE_YEAR 1970
#else /* !_KERNEL */
#include <time.h>
#if __BSD_VISIBLE || __XPG_VISIBLE
__BEGIN_DECLS
#if __BSD_VISIBLE
int adjtime(const struct timeval *, struct timeval *);
int adjfreq(const int64_t *, int64_t *);
#endif
#if __XPG_VISIBLE
int clock_getres(clockid_t, struct timespec *);
int clock_gettime(clockid_t, struct timespec *);
int clock_settime(clockid_t, const struct timespec *);
int futimes(int, const struct timeval *);
int getitimer(int, struct itimerval *);
int gettimeofday(struct timeval *, struct timezone *);
int setitimer(int, const struct itimerval *, struct itimerval *);
int settimeofday(const struct timeval *, const struct timezone *);
int utimes(const char *, const struct timeval *);
#endif /* __XPG_VISIBLE */
__END_DECLS
#endif /* __BSD_VISIBLE || __XPG_VISIBLE */
#endif /* !_KERNEL */
#endif /* !_SYS_TIME_H_ */