1409 	 * PPS events, so instead we poll them.  There is a finite risk that  in tc_windup()
1577  * RFC 2783 PPS-API implementation.
1585 abi_aware(struct pps_state *pps, int vers)  in abi_aware()  argument
1588 	return ((pps->kcmode & KCMODE_ABIFLAG) && pps->driver_abi >= vers);  in abi_aware()
1592 pps_fetch(struct pps_fetch_args *fapi, struct pps_state *pps)  in pps_fetch()  argument
1616 		aseq = atomic_load_int(&pps->ppsinfo.assert_sequence);  in pps_fetch()
1617 		cseq = atomic_load_int(&pps->ppsinfo.clear_sequence);  in pps_fetch()
1618 		while (aseq == atomic_load_int(&pps->ppsinfo.assert_sequence) &&  in pps_fetch()
1619 		    cseq == atomic_load_int(&pps->ppsinfo.clear_sequence)) {  in pps_fetch()
1620 			if (abi_aware(pps, 1) && pps->driver_mtx != NULL) {  in pps_fetch()
1621 				if (pps->flags & PPSFLAG_MTX_SPIN) {  in pps_fetch()
1622 					err = msleep_spin(pps, pps->driver_mtx,  in pps_fetch()
1625 					err = msleep(pps, pps->driver_mtx, PCATCH,  in pps_fetch()
1629 				err = tsleep(pps, PCATCH, "ppsfch", timo);  in pps_fetch()
1643 	pps->ppsinfo.current_mode = pps->ppsparam.mode;  in pps_fetch()
1644 	fapi->pps_info_buf = pps->ppsinfo;  in pps_fetch()
1650 pps_ioctl(u_long cmd, caddr_t data, struct pps_state *pps)  in pps_ioctl()  argument
1661 	KASSERT(pps != NULL, ("NULL pps pointer in pps_ioctl"));  in pps_ioctl()
1669 		if (app->mode & ~pps->ppscap)  in pps_ioctl()
1676 		pps->ppsparam = *app;  in pps_ioctl()
1680 		*app = pps->ppsparam;  in pps_ioctl()
1684 		*(int*)data = pps->ppscap;  in pps_ioctl()
1688 		return (pps_fetch(fapi, pps));  in pps_ioctl()
1697 		pps->ppsinfo_ffc.current_mode = pps->ppsparam.mode;  in pps_ioctl()
1698 		fapi_ffc->pps_info_buf_ffc = pps->ppsinfo_ffc;  in pps_ioctl()
1700 		switch (pps->ppsparam.mode & PPS_TSCLK_MASK) {  in pps_ioctl()
1703 			    pps->ppsinfo.assert_timestamp;  in pps_ioctl()
1705 			    pps->ppsinfo.clear_timestamp;  in pps_ioctl()
1722 		if (kapi->edge & ~pps->ppscap)  in pps_ioctl()
1724 		pps->kcmode = (kapi->edge & KCMODE_EDGEMASK) |  in pps_ioctl()
1725 		    (pps->kcmode & KCMODE_ABIFLAG);  in pps_ioctl()
1736 pps_init(struct pps_state *pps)  in pps_init()  argument
1738 	pps->ppscap |= PPS_TSFMT_TSPEC | PPS_CANWAIT;  in pps_init()
1739 	if (pps->ppscap & PPS_CAPTUREASSERT)  in pps_init()
1740 		pps->ppscap |= PPS_OFFSETASSERT;  in pps_init()
1741 	if (pps->ppscap & PPS_CAPTURECLEAR)  in pps_init()
1742 		pps->ppscap |= PPS_OFFSETCLEAR;  in pps_init()
1744 	pps->ppscap |= PPS_TSCLK_MASK;  in pps_init()
1746 	pps->kcmode &= ~KCMODE_ABIFLAG;  in pps_init()
1750 pps_init_abi(struct pps_state *pps)  in pps_init_abi()  argument
1753 	pps_init(pps);  in pps_init_abi()
1754 	if (pps->driver_abi > 0) {  in pps_init_abi()
1755 		pps->kcmode |= KCMODE_ABIFLAG;  in pps_init_abi()
1756 		pps->kernel_abi = PPS_ABI_VERSION;  in pps_init_abi()
1761 pps_capture(struct pps_state *pps)  in pps_capture()  argument
1766 	KASSERT(pps != NULL, ("NULL pps pointer in pps_capture"));  in pps_capture()
1768 	pps->capgen = atomic_load_acq_int(&th->th_generation);  in pps_capture()
1769 	pps->capth = th;  in pps_capture()
1771 	pps->capffth = fftimehands;  in pps_capture()
1774 	pps->capcount = tc->tc_get_timecount(tc);  in pps_capture()
1778 pps_event(struct pps_state *pps, int event)  in pps_event()  argument
1797 	KASSERT(pps != NULL, ("NULL pps pointer in pps_event"));  in pps_event()
1799 	if ((event & pps->ppsparam.mode) == 0)  in pps_event()
1803 	capth = pps->capth;  in pps_event()
1811 	if (pps->capgen == 0 || pps->capgen != capth->th_generation)  in pps_event()
1816 		tsp = &pps->ppsinfo.assert_timestamp;  in pps_event()
1817 		osp = &pps->ppsparam.assert_offset;  in pps_event()
1818 		foff = pps->ppsparam.mode & PPS_OFFSETASSERT;  in pps_event()
1820 		fhard = pps->kcmode & PPS_CAPTUREASSERT;  in pps_event()
1822 		pcount = &pps->ppscount[0];  in pps_event()
1823 		pseq = &pps->ppsinfo.assert_sequence;  in pps_event()
1825 		ffcount = &pps->ppsinfo_ffc.assert_ffcount;  in pps_event()
1826 		tsp_ffc = &pps->ppsinfo_ffc.assert_timestamp;  in pps_event()
1827 		pseq_ffc = &pps->ppsinfo_ffc.assert_sequence;  in pps_event()
1830 		tsp = &pps->ppsinfo.clear_timestamp;  in pps_event()
1831 		osp = &pps->ppsparam.clear_offset;  in pps_event()
1832 		foff = pps->ppsparam.mode & PPS_OFFSETCLEAR;  in pps_event()
1834 		fhard = pps->kcmode & PPS_CAPTURECLEAR;  in pps_event()
1836 		pcount = &pps->ppscount[1];  in pps_event()
1837 		pseq = &pps->ppsinfo.clear_sequence;  in pps_event()
1839 		ffcount = &pps->ppsinfo_ffc.clear_ffcount;  in pps_event()
1840 		tsp_ffc = &pps->ppsinfo_ffc.clear_timestamp;  in pps_event()
1841 		pseq_ffc = &pps->ppsinfo_ffc.clear_sequence;  in pps_event()
1845 	*pcount = pps->capcount;  in pps_event()
1849 	 * we have to drop the rest of the PPS-stuff until the next event.  in pps_event()
1851 	if (__predict_false(pps->ppstc != captc)) {  in pps_event()
1852 		pps->ppstc = captc;  in pps_event()
1853 		pps->ppscount[2] = pps->capcount;  in pps_event()
1860 	tcount = pps->capcount - tcount;  in pps_event()
1874 	*ffcount = pps->capffth->tick_ffcount + tcount;  in pps_event()
1875 	bt = pps->capffth->tick_time;  in pps_event()
1876 	ffclock_convert_delta(tcount, pps->capffth->cest.period, &bt);  in pps_event()
1877 	bintime_add(&bt, &pps->capffth->tick_time);  in pps_event()
1892 		tcount = pps->capcount - pps->ppscount[2];  in pps_event()
1893 		pps->ppscount[2] = pps->capcount;  in pps_event()
1904 	wakeup(pps);  in pps_event()