X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/378393581903b274cb7a4d18e0d978071a6b592d..4a3eedf9ecc9bbe3f3a5c6ce5e53ad199d639d32:/osfmk/ppc/rtclock.c diff --git a/osfmk/ppc/rtclock.c b/osfmk/ppc/rtclock.c index ecd5ee24f..90a5754ae 100644 --- a/osfmk/ppc/rtclock.c +++ b/osfmk/ppc/rtclock.c @@ -1,23 +1,29 @@ /* - * Copyright (c) 2004-2005 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ @@ -35,95 +41,24 @@ #include #include +#include #include #include - -#include +#include #include #include #include #include -#include #include -#include - #include -int sysclk_config(void); - -int sysclk_init(void); - -kern_return_t sysclk_gettime( - mach_timespec_t *cur_time); - -kern_return_t sysclk_getattr( - clock_flavor_t flavor, - clock_attr_t attr, - mach_msg_type_number_t *count); - -void sysclk_setalarm( - mach_timespec_t *deadline); - -struct clock_ops sysclk_ops = { - sysclk_config, sysclk_init, - sysclk_gettime, 0, - sysclk_getattr, 0, - sysclk_setalarm, -}; - -int calend_config(void); - -kern_return_t calend_gettime( - mach_timespec_t *cur_time); - -kern_return_t calend_getattr( - clock_flavor_t flavor, - clock_attr_t attr, - mach_msg_type_number_t *count); - -struct clock_ops calend_ops = { - calend_config, 0, - calend_gettime, 0, - calend_getattr, 0, - 0, -}; +int rtclock_config(void); -/* local data declarations */ - -static struct rtclock_calend { - uint32_t epoch; - uint32_t microepoch; - - uint64_t epoch1; - - int64_t adjtotal; - int32_t adjdelta; -} rtclock_calend; - -static uint32_t rtclock_boottime; - -#define TIME_ADD(rsecs, secs, rfrac, frac, unit) \ -MACRO_BEGIN \ - if (((rfrac) += (frac)) >= (unit)) { \ - (rfrac) -= (unit); \ - (rsecs) += 1; \ - } \ - (rsecs) += (secs); \ -MACRO_END - -#define TIME_SUB(rsecs, secs, rfrac, frac, unit) \ -MACRO_BEGIN \ - if ((int32_t)((rfrac) -= (frac)) < 0) { \ - (rfrac) += (unit); \ - (rsecs) -= 1; \ - } \ - (rsecs) -= (secs); \ -MACRO_END +int rtclock_init(void); #define NSEC_PER_HZ (NSEC_PER_SEC / 100) -static uint32_t rtclock_tick_interval; static uint32_t rtclock_sec_divisor; @@ -131,20 +66,8 @@ static mach_timebase_info_data_t rtclock_timebase_const; static boolean_t rtclock_timebase_initialized; -static clock_timer_func_t rtclock_timer_expire; - -static timer_call_data_t rtclock_alarm_timer; - -static void nanotime_to_absolutetime( - uint32_t secs, - uint32_t nanosecs, - uint64_t *result); - -static void rtclock_alarm_expire( - timer_call_param_t p0, - timer_call_param_t p1); - -/* global data declarations */ +/* XXX this should really be in a header somewhere */ +extern clock_timer_func_t rtclock_timer_expire; decl_simple_lock_data(static,rtclock_lock) @@ -168,12 +91,11 @@ timebase_callback( struct timebase_freq_t *freq) { uint32_t numer, denom; - uint64_t abstime; spl_t s; if ( freq->timebase_den < 1 || freq->timebase_den > 4 || freq->timebase_num < freq->timebase_den ) - panic("rtclock timebase_callback: invalid constant %d / %d", + panic("rtclock timebase_callback: invalid constant %lu / %lu", freq->timebase_num, freq->timebase_den); denom = freq->timebase_num; @@ -181,15 +103,12 @@ timebase_callback( LOCK_RTC(s); if (!rtclock_timebase_initialized) { - commpage_set_timestamp(0,0,0,0); + commpage_set_timestamp(0,0,0); rtclock_timebase_const.numer = numer; rtclock_timebase_const.denom = denom; rtclock_sec_divisor = freq->timebase_num / freq->timebase_den; - nanoseconds_to_absolutetime(NSEC_PER_HZ, &abstime); - rtclock_tick_interval = abstime; - ml_init_lock_timeout(); } else { @@ -205,13 +124,11 @@ timebase_callback( } /* - * Configure the real-time clock device. + * Configure the system clock device. */ int -sysclk_config(void) +rtclock_config(void) { - timer_call_setup(&rtclock_alarm_timer, rtclock_alarm_expire, NULL); - simple_lock_init(&rtclock_lock, 0); PE_register_timebase_callback(timebase_callback); @@ -223,38 +140,13 @@ sysclk_config(void) * Initialize the system clock device. */ int -sysclk_init(void) +rtclock_init(void) { - uint64_t abstime; - struct per_proc_info *pp; - - pp = getPerProc(); - - abstime = mach_absolute_time(); - pp->rtclock_tick_deadline = abstime + rtclock_tick_interval; /* Get the time we need to pop */ - pp->rtcPop = pp->rtclock_tick_deadline; /* Set the rtc pop time the same for now */ - - (void)setTimerReq(); /* Start the timers going */ + etimer_resync_deadlines(); /* Start the timers going */ return (1); } -kern_return_t -sysclk_gettime( - mach_timespec_t *time) /* OUT */ -{ - uint64_t now, t64; - uint32_t divisor; - - now = mach_absolute_time(); - - time->tv_sec = t64 = now / (divisor = rtclock_sec_divisor); - now -= (t64 * divisor); - time->tv_nsec = (now * NSEC_PER_SEC) / divisor; - - return (KERN_SUCCESS); -} - void clock_get_system_microtime( uint32_t *secs, @@ -285,590 +177,29 @@ clock_get_system_nanotime( *nanosecs = (now * NSEC_PER_SEC) / divisor; } -/* - * Get clock device attributes. - */ -kern_return_t -sysclk_getattr( - clock_flavor_t flavor, - clock_attr_t attr, /* OUT */ - mach_msg_type_number_t *count) /* IN/OUT */ -{ - spl_t s; - - if (*count != 1) - return (KERN_FAILURE); - - switch (flavor) { - - case CLOCK_GET_TIME_RES: /* >0 res */ - case CLOCK_ALARM_CURRES: /* =0 no alarm */ - case CLOCK_ALARM_MINRES: - case CLOCK_ALARM_MAXRES: - LOCK_RTC(s); - *(clock_res_t *) attr = NSEC_PER_HZ; - UNLOCK_RTC(s); - break; - - default: - return (KERN_INVALID_VALUE); - } - - return (KERN_SUCCESS); -} - -/* - * Set deadline for the next alarm on the clock device. This call - * always resets the time to deliver an alarm for the clock. - */ void -sysclk_setalarm( - mach_timespec_t *deadline) +clock_gettimeofday_set_commpage( + uint64_t abstime, + uint64_t epoch, + uint64_t offset, + uint32_t *secs, + uint32_t *microsecs) { - uint64_t abstime; - - nanotime_to_absolutetime(deadline->tv_sec, deadline->tv_nsec, &abstime); - timer_call_enter(&rtclock_alarm_timer, abstime); -} - -/* - * Configure the calendar clock. - */ -int -calend_config(void) -{ - return (1); -} - -/* - * Get the current clock time. - */ -kern_return_t -calend_gettime( - mach_timespec_t *time) /* OUT */ -{ - clock_get_calendar_nanotime( - &time->tv_sec, &time->tv_nsec); - - return (KERN_SUCCESS); -} - -/* - * Get clock device attributes. - */ -kern_return_t -calend_getattr( - clock_flavor_t flavor, - clock_attr_t attr, /* OUT */ - mach_msg_type_number_t *count) /* IN/OUT */ -{ - spl_t s; - - if (*count != 1) - return (KERN_FAILURE); - - switch (flavor) { - - case CLOCK_GET_TIME_RES: /* >0 res */ - LOCK_RTC(s); - *(clock_res_t *) attr = NSEC_PER_HZ; - UNLOCK_RTC(s); - break; - - case CLOCK_ALARM_CURRES: /* =0 no alarm */ - case CLOCK_ALARM_MINRES: - case CLOCK_ALARM_MAXRES: - *(clock_res_t *) attr = 0; - break; - - default: - return (KERN_INVALID_VALUE); - } - - return (KERN_SUCCESS); -} - -void -clock_get_calendar_microtime( - uint32_t *secs, - uint32_t *microsecs) -{ - uint32_t epoch, microepoch; - uint64_t now, t64; - spl_t s = splclock(); + uint64_t t64, now = abstime; simple_lock(&rtclock_lock); - if (rtclock_calend.adjdelta >= 0) { - uint32_t divisor; + now += offset; - now = mach_absolute_time(); + *secs = t64 = now / rtclock_sec_divisor; + now -= (t64 * rtclock_sec_divisor); + *microsecs = (now * USEC_PER_SEC) / rtclock_sec_divisor; - epoch = rtclock_calend.epoch; - microepoch = rtclock_calend.microepoch; + *secs += epoch; - simple_unlock(&rtclock_lock); - - *secs = t64 = now / (divisor = rtclock_sec_divisor); - now -= (t64 * divisor); - *microsecs = (now * USEC_PER_SEC) / divisor; - - TIME_ADD(*secs, epoch, *microsecs, microepoch, USEC_PER_SEC); - } - else { - uint32_t delta, t32; - - delta = -rtclock_calend.adjdelta; - - now = mach_absolute_time(); - - *secs = rtclock_calend.epoch; - *microsecs = rtclock_calend.microepoch; - - if (now > rtclock_calend.epoch1) { - t64 = now - rtclock_calend.epoch1; - - t32 = (t64 * USEC_PER_SEC) / rtclock_sec_divisor; - - if (t32 > delta) - TIME_ADD(*secs, 0, *microsecs, (t32 - delta), USEC_PER_SEC); - } - - simple_unlock(&rtclock_lock); - } - - splx(s); -} - -/* This is only called from the gettimeofday() syscall. As a side - * effect, it updates the commpage timestamp. Otherwise it is - * identical to clock_get_calendar_microtime(). Because most - * gettimeofday() calls are handled by the commpage in user mode, - * this routine should be infrequently used except when slowing down - * the clock. - */ -void -clock_gettimeofday( - uint32_t *secs_p, - uint32_t *microsecs_p) -{ - uint32_t epoch, microepoch; - uint32_t secs, microsecs; - uint64_t now, t64, secs_64, usec_64; - spl_t s = splclock(); - - simple_lock(&rtclock_lock); - - if (rtclock_calend.adjdelta >= 0) { - now = mach_absolute_time(); - - epoch = rtclock_calend.epoch; - microepoch = rtclock_calend.microepoch; - - secs = secs_64 = now / rtclock_sec_divisor; - t64 = now - (secs_64 * rtclock_sec_divisor); - microsecs = usec_64 = (t64 * USEC_PER_SEC) / rtclock_sec_divisor; - - TIME_ADD(secs, epoch, microsecs, microepoch, USEC_PER_SEC); - - /* adjust "now" to be absolute time at _start_ of usecond */ - now -= t64 - ((usec_64 * rtclock_sec_divisor) / USEC_PER_SEC); - - commpage_set_timestamp(now,secs,microsecs,rtclock_sec_divisor); - } - else { - uint32_t delta, t32; - - delta = -rtclock_calend.adjdelta; - - now = mach_absolute_time(); - - secs = rtclock_calend.epoch; - microsecs = rtclock_calend.microepoch; - - if (now > rtclock_calend.epoch1) { - t64 = now - rtclock_calend.epoch1; - - t32 = (t64 * USEC_PER_SEC) / rtclock_sec_divisor; - - if (t32 > delta) - TIME_ADD(secs, 0, microsecs, (t32 - delta), USEC_PER_SEC); - } - - /* no need to disable timestamp, it is already off */ - } - - simple_unlock(&rtclock_lock); - splx(s); - - *secs_p = secs; - *microsecs_p = microsecs; -} - -void -clock_get_calendar_nanotime( - uint32_t *secs, - uint32_t *nanosecs) -{ - uint32_t epoch, nanoepoch; - uint64_t now, t64; - spl_t s = splclock(); - - simple_lock(&rtclock_lock); - - if (rtclock_calend.adjdelta >= 0) { - uint32_t divisor; - - now = mach_absolute_time(); - - epoch = rtclock_calend.epoch; - nanoepoch = rtclock_calend.microepoch * NSEC_PER_USEC; - - simple_unlock(&rtclock_lock); - - *secs = t64 = now / (divisor = rtclock_sec_divisor); - now -= (t64 * divisor); - *nanosecs = ((now * USEC_PER_SEC) / divisor) * NSEC_PER_USEC; - - TIME_ADD(*secs, epoch, *nanosecs, nanoepoch, NSEC_PER_SEC); - } - else { - uint32_t delta, t32; - - delta = -rtclock_calend.adjdelta; - - now = mach_absolute_time(); - - *secs = rtclock_calend.epoch; - *nanosecs = rtclock_calend.microepoch * NSEC_PER_USEC; - - if (now > rtclock_calend.epoch1) { - t64 = now - rtclock_calend.epoch1; - - t32 = (t64 * USEC_PER_SEC) / rtclock_sec_divisor; - - if (t32 > delta) - TIME_ADD(*secs, 0, *nanosecs, ((t32 - delta) * NSEC_PER_USEC), NSEC_PER_SEC); - } - - simple_unlock(&rtclock_lock); - } - - splx(s); -} - -void -clock_set_calendar_microtime( - uint32_t secs, - uint32_t microsecs) -{ - uint32_t sys, microsys; - uint32_t newsecs; - spl_t s; - - newsecs = (microsecs < 500*USEC_PER_SEC)? - secs: secs + 1; - - s = splclock(); - simple_lock(&rtclock_lock); - - commpage_set_timestamp(0,0,0,0); - - /* - * Cancel any adjustment in progress. - */ - if (rtclock_calend.adjdelta < 0) { - uint64_t now, t64; - uint32_t delta, t32; - - delta = -rtclock_calend.adjdelta; - - sys = rtclock_calend.epoch; - microsys = rtclock_calend.microepoch; - - now = mach_absolute_time(); - - if (now > rtclock_calend.epoch1) - t64 = now - rtclock_calend.epoch1; - else - t64 = 0; - - t32 = (t64 * USEC_PER_SEC) / rtclock_sec_divisor; - - if (t32 > delta) - TIME_ADD(sys, 0, microsys, (t32 - delta), USEC_PER_SEC); - - rtclock_calend.epoch = sys; - rtclock_calend.microepoch = microsys; - - sys = t64 = now / rtclock_sec_divisor; - now -= (t64 * rtclock_sec_divisor); - microsys = (now * USEC_PER_SEC) / rtclock_sec_divisor; - - TIME_SUB(rtclock_calend.epoch, sys, rtclock_calend.microepoch, microsys, USEC_PER_SEC); - } - - rtclock_calend.epoch1 = 0; - rtclock_calend.adjdelta = rtclock_calend.adjtotal = 0; - - /* - * Calculate the new calendar epoch based on - * the new value and the system clock. - */ - clock_get_system_microtime(&sys, µsys); - TIME_SUB(secs, sys, microsecs, microsys, USEC_PER_SEC); - - /* - * Adjust the boottime based on the delta. - */ - rtclock_boottime += secs - rtclock_calend.epoch; - - /* - * Set the new calendar epoch. - */ - rtclock_calend.epoch = secs; - rtclock_calend.microepoch = microsecs; + commpage_set_timestamp(abstime - now, *secs, rtclock_sec_divisor); simple_unlock(&rtclock_lock); - - /* - * Set the new value for the platform clock. - */ - PESetGMTTimeOfDay(newsecs); - - splx(s); - - /* - * Send host notifications. - */ - host_notify_calendar_change(); -} - -#define tickadj (40) /* "standard" skew, us / tick */ -#define bigadj (USEC_PER_SEC) /* use 10x skew above bigadj us */ - -uint32_t -clock_set_calendar_adjtime( - int32_t *secs, - int32_t *microsecs) -{ - int64_t total, ototal; - uint32_t interval = 0; - spl_t s; - - total = (int64_t)*secs * USEC_PER_SEC + *microsecs; - - LOCK_RTC(s); - commpage_set_timestamp(0,0,0,0); - - ototal = rtclock_calend.adjtotal; - - if (rtclock_calend.adjdelta < 0) { - uint64_t now, t64; - uint32_t delta, t32; - uint32_t sys, microsys; - - delta = -rtclock_calend.adjdelta; - - sys = rtclock_calend.epoch; - microsys = rtclock_calend.microepoch; - - now = mach_absolute_time(); - - if (now > rtclock_calend.epoch1) - t64 = now - rtclock_calend.epoch1; - else - t64 = 0; - - t32 = (t64 * USEC_PER_SEC) / rtclock_sec_divisor; - - if (t32 > delta) - TIME_ADD(sys, 0, microsys, (t32 - delta), USEC_PER_SEC); - - rtclock_calend.epoch = sys; - rtclock_calend.microepoch = microsys; - - sys = t64 = now / rtclock_sec_divisor; - now -= (t64 * rtclock_sec_divisor); - microsys = (now * USEC_PER_SEC) / rtclock_sec_divisor; - - TIME_SUB(rtclock_calend.epoch, sys, rtclock_calend.microepoch, microsys, USEC_PER_SEC); - } - - if (total != 0) { - int32_t delta = tickadj; - - if (total > 0) { - if (total > bigadj) - delta *= 10; - if (delta > total) - delta = total; - - rtclock_calend.epoch1 = 0; - } - else { - uint64_t now, t64; - uint32_t sys, microsys; - - if (total < -bigadj) - delta *= 10; - delta = -delta; - if (delta < total) - delta = total; - - rtclock_calend.epoch1 = now = mach_absolute_time(); - - sys = t64 = now / rtclock_sec_divisor; - now -= (t64 * rtclock_sec_divisor); - microsys = (now * USEC_PER_SEC) / rtclock_sec_divisor; - - TIME_ADD(rtclock_calend.epoch, sys, rtclock_calend.microepoch, microsys, USEC_PER_SEC); - } - - rtclock_calend.adjtotal = total; - rtclock_calend.adjdelta = delta; - - interval = rtclock_tick_interval; - } - else { - rtclock_calend.epoch1 = 0; - rtclock_calend.adjdelta = rtclock_calend.adjtotal = 0; - } - - UNLOCK_RTC(s); - - if (ototal == 0) - *secs = *microsecs = 0; - else { - *secs = ototal / USEC_PER_SEC; - *microsecs = ototal % USEC_PER_SEC; - } - - return (interval); -} - -uint32_t -clock_adjust_calendar(void) -{ - uint32_t interval = 0; - int32_t delta; - spl_t s; - - LOCK_RTC(s); - commpage_set_timestamp(0,0,0,0); - - delta = rtclock_calend.adjdelta; - - if (delta > 0) { - TIME_ADD(rtclock_calend.epoch, 0, rtclock_calend.microepoch, delta, USEC_PER_SEC); - - rtclock_calend.adjtotal -= delta; - if (delta > rtclock_calend.adjtotal) - rtclock_calend.adjdelta = rtclock_calend.adjtotal; - } - else - if (delta < 0) { - uint64_t now, t64; - uint32_t t32; - - now = mach_absolute_time(); - - if (now > rtclock_calend.epoch1) - t64 = now - rtclock_calend.epoch1; - else - t64 = 0; - - rtclock_calend.epoch1 = now; - - t32 = (t64 * USEC_PER_SEC) / rtclock_sec_divisor; - - TIME_ADD(rtclock_calend.epoch, 0, rtclock_calend.microepoch, (t32 + delta), USEC_PER_SEC); - - rtclock_calend.adjtotal -= delta; - if (delta < rtclock_calend.adjtotal) - rtclock_calend.adjdelta = rtclock_calend.adjtotal; - - if (rtclock_calend.adjdelta == 0) { - uint32_t sys, microsys; - - sys = t64 = now / rtclock_sec_divisor; - now -= (t64 * rtclock_sec_divisor); - microsys = (now * USEC_PER_SEC) / rtclock_sec_divisor; - - TIME_SUB(rtclock_calend.epoch, sys, rtclock_calend.microepoch, microsys, USEC_PER_SEC); - - rtclock_calend.epoch1 = 0; - } - } - - if (rtclock_calend.adjdelta != 0) - interval = rtclock_tick_interval; - - UNLOCK_RTC(s); - - return (interval); -} - -/* - * clock_initialize_calendar: - * - * Set the calendar and related clocks - * from the platform clock at boot or - * wake event. - */ -void -clock_initialize_calendar(void) -{ - uint32_t sys, microsys; - uint32_t microsecs = 0, secs = PEGetGMTTimeOfDay(); - spl_t s; - - LOCK_RTC(s); - commpage_set_timestamp(0,0,0,0); - - if ((int32_t)secs >= (int32_t)rtclock_boottime) { - /* - * Initialize the boot time based on the platform clock. - */ - if (rtclock_boottime == 0) - rtclock_boottime = secs; - - /* - * Calculate the new calendar epoch based - * on the platform clock and the system - * clock. - */ - clock_get_system_microtime(&sys, µsys); - TIME_SUB(secs, sys, microsecs, microsys, USEC_PER_SEC); - - /* - * Set the new calendar epoch. - */ - rtclock_calend.epoch = secs; - rtclock_calend.microepoch = microsecs; - - /* - * Cancel any adjustment in progress. - */ - rtclock_calend.epoch1 = 0; - rtclock_calend.adjdelta = rtclock_calend.adjtotal = 0; - } - - UNLOCK_RTC(s); - - /* - * Send host notifications. - */ - host_notify_calendar_change(); -} - -void -clock_get_boottime_nanotime( - uint32_t *secs, - uint32_t *nanosecs) -{ - *secs = rtclock_boottime; - *nanosecs = 0; } void @@ -878,37 +209,11 @@ clock_timebase_info( spl_t s; LOCK_RTC(s); - rtclock_timebase_initialized = TRUE; *info = rtclock_timebase_const; + rtclock_timebase_initialized = TRUE; UNLOCK_RTC(s); } -void -clock_set_timer_deadline( - uint64_t deadline) -{ - int decr; - uint64_t abstime; - rtclock_timer_t *mytimer; - struct per_proc_info *pp; - spl_t s; - - s = splclock(); - pp = getPerProc(); - mytimer = &pp->rtclock_timer; - mytimer->deadline = deadline; - - if (!mytimer->has_expired && (deadline < pp->rtclock_tick_deadline)) { /* Has the timer already expired or is less that set? */ - pp->rtcPop = deadline; /* Yes, set the new rtc pop time */ - decr = setTimerReq(); /* Start the timers going */ - - KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_DECI, 1) - | DBG_FUNC_NONE, decr, 2, 0, 0, 0); - } - - splx(s); -} - void clock_set_timer_func( clock_timer_func_t func) @@ -921,91 +226,20 @@ clock_set_timer_func( UNLOCK_RTC(s); } -/* - * Real-time clock device interrupt. - */ void -rtclock_intr(struct savearea *ssp) { - - uint64_t abstime; - int decr; - rtclock_timer_t *mytimer; - struct per_proc_info *pp; - - pp = getPerProc(); - mytimer = &pp->rtclock_timer; - - abstime = mach_absolute_time(); - if (pp->rtclock_tick_deadline <= abstime) { /* Have we passed the pop time? */ - clock_deadline_for_periodic_event(rtclock_tick_interval, abstime, - &pp->rtclock_tick_deadline); - hertz_tick(USER_MODE(ssp->save_srr1), ssp->save_srr0); - abstime = mach_absolute_time(); /* Refresh the current time since we went away */ - } - - if (mytimer->deadline <= abstime) { /* Have we expired the deadline? */ - mytimer->has_expired = TRUE; /* Remember that we popped */ - mytimer->deadline = EndOfAllTime; /* Set timer request to the end of all time in case we have no more events */ - (*rtclock_timer_expire)(abstime); /* Process pop */ - mytimer->has_expired = FALSE; - } - - pp->rtcPop = (pp->rtclock_tick_deadline < mytimer->deadline) ? /* Get shortest pop */ - pp->rtclock_tick_deadline : /* It was the periodic timer */ - mytimer->deadline; /* Actually, an event request */ - - decr = setTimerReq(); /* Request the timer pop */ - - KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_EXCP_DECI, 1) - | DBG_FUNC_NONE, decr, 3, 0, 0, 0); -} - -/* - * Request an interruption at a specific time - * - * Sets the decrementer to pop at the right time based on the timebase. - * The value is chosen by comparing the rtc request with the power management. - * request. We may add other values at a future time. - * - */ - -int setTimerReq(void) { - - struct per_proc_info *pp; - int decr; - uint64_t nexttime; - - pp = getPerProc(); /* Get per_proc */ - - nexttime = pp->rtcPop; /* Assume main timer */ - - decr = setPop((pp->pms.pmsPop < nexttime) ? pp->pms.pmsPop : nexttime); /* Schedule timer pop */ - - return decr; /* Pass back what we actually set */ -} - -static void -rtclock_alarm_expire( - __unused void *p0, - __unused void *p1) -{ - mach_timespec_t timestamp; - - (void) sysclk_gettime(×tamp); - - clock_alarm_intr(SYSTEM_CLOCK, ×tamp); -} - -static void -nanotime_to_absolutetime( - uint32_t secs, - uint32_t nanosecs, +clock_interval_to_absolutetime_interval( + uint32_t interval, + uint32_t scale_factor, uint64_t *result) { - uint32_t divisor = rtclock_sec_divisor; + uint64_t nanosecs = (uint64_t)interval * scale_factor; + uint64_t t64; + uint32_t divisor; - *result = ((uint64_t)secs * divisor) + - ((uint64_t)nanosecs * divisor) / NSEC_PER_SEC; + *result = (t64 = nanosecs / NSEC_PER_SEC) * + (divisor = rtclock_sec_divisor); + nanosecs -= (t64 * NSEC_PER_SEC); + *result += (nanosecs * divisor) / NSEC_PER_SEC; } void @@ -1023,44 +257,29 @@ absolutetime_to_microtime( } void -clock_interval_to_deadline( - uint32_t interval, - uint32_t scale_factor, - uint64_t *result) -{ - uint64_t abstime; - - clock_get_uptime(result); - - clock_interval_to_absolutetime_interval(interval, scale_factor, &abstime); - - *result += abstime; -} - -void -clock_interval_to_absolutetime_interval( - uint32_t interval, - uint32_t scale_factor, - uint64_t *result) +absolutetime_to_nanotime( + uint64_t abstime, + uint32_t *secs, + uint32_t *nanosecs) { - uint64_t nanosecs = (uint64_t)interval * scale_factor; - uint64_t t64; - uint32_t divisor; + uint64_t t64; + uint32_t divisor; - *result = (t64 = nanosecs / NSEC_PER_SEC) * - (divisor = rtclock_sec_divisor); - nanosecs -= (t64 * NSEC_PER_SEC); - *result += (nanosecs * divisor) / NSEC_PER_SEC; + *secs = t64 = abstime / (divisor = rtclock_sec_divisor); + abstime -= (t64 * divisor); + *nanosecs = (abstime * NSEC_PER_SEC) / divisor; } void -clock_absolutetime_interval_to_deadline( - uint64_t abstime, +nanotime_to_absolutetime( + uint32_t secs, + uint32_t nanosecs, uint64_t *result) { - clock_get_uptime(result); + uint32_t divisor = rtclock_sec_divisor; - *result += abstime; + *result = ((uint64_t)secs * divisor) + + ((uint64_t)nanosecs * divisor) / NSEC_PER_SEC; } void @@ -1100,4 +319,3 @@ machine_delay_until( now = mach_absolute_time(); } while (now < deadline); } -