/*
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* Written by Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _COBALT_POSIX_CLOCK_H
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#define _COBALT_POSIX_CLOCK_H
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#include <linux/types.h>
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#include <linux/time.h>
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#include <linux/cpumask.h>
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#include <cobalt/uapi/time.h>
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#include <xenomai/posix/syscall.h>
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#define ONE_BILLION 1000000000
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struct xnclock;
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static inline void ns2ts(struct timespec64 *ts, xnticks_t nsecs)
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{
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ts->tv_sec = xnclock_divrem_billion(nsecs, &ts->tv_nsec);
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}
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static inline void u_ns2ts(struct __user_old_timespec *ts, xnticks_t nsecs)
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{
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ts->tv_sec = xnclock_divrem_billion(nsecs, &ts->tv_nsec);
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}
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static inline xnticks_t ts2ns(const struct timespec64 *ts)
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{
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xnticks_t nsecs = ts->tv_nsec;
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if (ts->tv_sec)
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nsecs += (xnticks_t)ts->tv_sec * ONE_BILLION;
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return nsecs;
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}
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static inline xnticks_t u_ts2ns(const struct __user_old_timespec *ts)
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{
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xnticks_t nsecs = ts->tv_nsec;
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if (ts->tv_sec)
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nsecs += (xnticks_t)ts->tv_sec * ONE_BILLION;
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return nsecs;
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}
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static inline xnticks_t tv2ns(const struct __kernel_old_timeval *tv)
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{
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xnticks_t nsecs = tv->tv_usec * 1000;
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if (tv->tv_sec)
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nsecs += (xnticks_t)tv->tv_sec * ONE_BILLION;
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return nsecs;
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}
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static inline void ticks2tv(struct __kernel_old_timeval *tv, xnticks_t ticks)
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{
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unsigned long nsecs;
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tv->tv_sec = xnclock_divrem_billion(ticks, &nsecs);
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tv->tv_usec = nsecs / 1000;
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}
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static inline xnticks_t clock_get_ticks(clockid_t clock_id)
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{
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return clock_id == CLOCK_REALTIME ?
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xnclock_read_realtime(&nkclock) :
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xnclock_read_monotonic(&nkclock);
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}
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static inline int clock_flag(int flag, clockid_t clock_id)
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{
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if ((flag & TIMER_ABSTIME) == 0)
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return XN_RELATIVE;
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if (clock_id == CLOCK_REALTIME)
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return XN_REALTIME;
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return XN_ABSOLUTE;
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}
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int __cobalt_clock_getres(clockid_t clock_id,
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struct timespec64 *ts);
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int __cobalt_clock_getres64(clockid_t clock_id,
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struct __kernel_timespec __user *u_ts);
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int __cobalt_clock_gettime(clockid_t clock_id,
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struct timespec64 *ts);
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int __cobalt_clock_gettime64(clockid_t clock_id,
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struct __kernel_timespec __user *u_ts);
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int __cobalt_clock_settime(clockid_t clock_id,
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const struct timespec64 *ts);
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int __cobalt_clock_settime64(clockid_t clock_id,
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const struct __kernel_timespec __user *u_ts);
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int __cobalt_clock_adjtime(clockid_t clock_id,
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struct __kernel_timex *tx);
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int __cobalt_clock_adjtime64(clockid_t clock_id,
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struct __kernel_timex __user *u_tx);
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int __cobalt_clock_nanosleep(clockid_t clock_id, int flags,
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const struct timespec64 *rqt,
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struct timespec64 *rmt);
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int __cobalt_clock_nanosleep64(clockid_t clock_id, int flags,
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const struct __kernel_timespec __user *u_rqt,
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struct __kernel_timespec __user *u_rmt);
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COBALT_SYSCALL_DECL(clock_getres,
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(clockid_t clock_id, struct __user_old_timespec __user *u_ts));
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COBALT_SYSCALL_DECL(clock_getres64,
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(clockid_t clock_id, struct __kernel_timespec __user *u_ts));
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COBALT_SYSCALL_DECL(clock_gettime,
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(clockid_t clock_id, struct __user_old_timespec __user *u_ts));
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COBALT_SYSCALL_DECL(clock_gettime64,
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(clockid_t clock_id, struct __kernel_timespec __user *u_ts));
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COBALT_SYSCALL_DECL(clock_settime,
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(clockid_t clock_id, const struct __user_old_timespec __user *u_ts));
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COBALT_SYSCALL_DECL(clock_settime64,
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(clockid_t clock_id,
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const struct __kernel_timespec __user *u_ts));
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COBALT_SYSCALL_DECL(clock_adjtime,
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(clockid_t clock_id, struct __user_old_timex __user *u_tx));
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COBALT_SYSCALL_DECL(clock_adjtime64,
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(clockid_t clock_id, struct __kernel_timex __user *u_tx));
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COBALT_SYSCALL_DECL(clock_nanosleep,
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(clockid_t clock_id, int flags,
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const struct __user_old_timespec __user *u_rqt,
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struct __user_old_timespec __user *u_rmt));
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COBALT_SYSCALL_DECL(clock_nanosleep64,
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(clockid_t clock_id, int flags,
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const struct __kernel_timespec __user *u_rqt,
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struct __kernel_timespec __user *u_rmt));
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int cobalt_clock_register(struct xnclock *clock,
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const cpumask_t *affinity,
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clockid_t *clk_id);
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void cobalt_clock_deregister(struct xnclock *clock);
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struct xnclock *cobalt_clock_find(clockid_t clock_id);
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extern DECLARE_BITMAP(cobalt_clock_extids, COBALT_MAX_EXTCLOCKS);
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#endif /* !_COBALT_POSIX_CLOCK_H */
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