score/src/coretodset.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  * @file
0005  *
0006  * @ingroup RTEMSScoreTOD
0007  *
0008  * @brief This source file contains the implementation of
0009  *   _TOD_Set().
0010  */
0011
0012 /*  COPYRIGHT (c) 1989-2007.
0013  *  On-Line Applications Research Corporation (OAR).
0014  *
0015  * Redistribution and use in source and binary forms, with or without
0016  * modification, are permitted provided that the following conditions
0017  * are met:
0018  * 1. Redistributions of source code must retain the above copyright
0019  *    notice, this list of conditions and the following disclaimer.
0020  * 2. Redistributions in binary form must reproduce the above copyright
0021  *    notice, this list of conditions and the following disclaimer in the
0022  *    documentation and/or other materials provided with the distribution.
0023  *
0024  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0025  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0026  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0027  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0028  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0029  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0030  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0031  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0032  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0033  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0034  * POSSIBILITY OF SUCH DAMAGE.
0035  */
0036
0037 #ifdef HAVE_CONFIG_H
0038 #include "config.h"
0039 #endif
0040
0041 #include <rtems/score/todimpl.h>
0042 #include <rtems/score/assert.h>
0043 #include <rtems/score/watchdogimpl.h>
0044
0045 Status_Control _TOD_Set(
0046   const struct timespec *tod,
0047   ISR_lock_Context      *lock_context
0048 )
0049 {
0050   struct bintime  tod_as_bintime;
0051   uint64_t        tod_as_ticks;
0052   uint32_t        cpu_max;
0053   uint32_t        cpu_index;
0054   Status_Control  status;
0055
0056   _Assert( _TOD_Is_owner() );
0057   _Assert( _TOD_Is_valid_new_time_of_day( tod ) == STATUS_SUCCESSFUL );
0058
0059   status = _TOD_Hook_Run( TOD_ACTION_SET_CLOCK, tod );
0060   if ( status != STATUS_SUCCESSFUL ) {
0061     _TOD_Release( lock_context );
0062     return status;
0063   }
0064
0065   timespec2bintime( tod, &tod_as_bintime );
0066   _Timecounter_Set_clock( &tod_as_bintime, lock_context );
0067
0068   tod_as_ticks = _Watchdog_Ticks_from_timespec( tod );
0069   cpu_max = _SMP_Get_processor_maximum();
0070
0071   for ( cpu_index = 0 ; cpu_index < cpu_max ; ++cpu_index ) {
0072     Per_CPU_Control  *cpu;
0073     Watchdog_Header  *header;
0074     ISR_lock_Context  lock_context_2;
0075     Watchdog_Control *first;
0076
0077     cpu = _Per_CPU_Get_by_index( cpu_index );
0078     header = &cpu->Watchdog.Header[ PER_CPU_WATCHDOG_REALTIME ];
0079
0080     _ISR_lock_ISR_disable_and_acquire( &cpu->Watchdog.Lock, &lock_context_2 );
0081
0082     first = _Watchdog_Header_first( header );
0083
0084     if ( first != NULL ) {
0085       _Watchdog_Tickle(
0086         header,
0087         first,
0088         tod_as_ticks,
0089         &cpu->Watchdog.Lock,
0090         &lock_context_2
0091       );
0092     }
0093
0094     _ISR_lock_Release_and_ISR_enable( &cpu->Watchdog.Lock, &lock_context_2 );
0095   }
0096
0097   _TOD.is_set = true;
0098
0099   return STATUS_SUCCESSFUL;
0100 }