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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup bsp_interrupt
*
* @brief This source file contains the implementation of
* rtems_interrupt_entry_remove() and bsp_interrupt_entry_remove().
*/
/*
* Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de)
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
*/
#include <bsp/irq-generic.h>
void bsp_interrupt_entry_remove(
rtems_vector_number vector,
rtems_interrupt_entry *entry,
rtems_interrupt_entry **previous_next
)
{
rtems_vector_number index;
rtems_interrupt_entry *first;
rtems_interrupt_entry *entry_next;
index = bsp_interrupt_handler_index( vector );
first = bsp_interrupt_handler_table[ index ];
entry_next = entry->next;
if ( entry == first && entry_next == NULL ) {
/* We remove the last installed entry */
bsp_interrupt_vector_disable( vector );
#if defined(bsp_interrupt_vector_remove)
bsp_interrupt_vector_remove( vector );
#else
bsp_interrupt_vector_disable( vector );
#endif
bsp_interrupt_set_handler_unique( index, false );
#if defined(BSP_INTERRUPT_USE_INDEX_TABLE)
bsp_interrupt_handler_index_table[ vector ] = 0;
#endif
}
bsp_interrupt_entry_store_release( previous_next, entry_next );
}
static rtems_status_code bsp_interrupt_entry_do_remove(
rtems_vector_number vector,
rtems_interrupt_entry *entry
)
{
rtems_interrupt_entry *installed;
rtems_interrupt_entry **previous_next;
installed = bsp_interrupt_entry_find(
vector,
entry->handler,
entry->arg,
&previous_next
);
if ( installed != entry ) {
return RTEMS_UNSATISFIED;
}
bsp_interrupt_entry_remove( vector, entry, previous_next );
return RTEMS_SUCCESSFUL;
}
rtems_status_code rtems_interrupt_entry_remove(
rtems_vector_number vector,
rtems_interrupt_entry *entry
)
{
rtems_status_code sc;
if ( entry == NULL ) {
return RTEMS_INVALID_ADDRESS;
}
sc = bsp_interrupt_check_and_lock( vector, entry->handler );
if ( sc != RTEMS_SUCCESSFUL ) {
return sc;
}
sc = bsp_interrupt_entry_do_remove( vector, entry );
bsp_interrupt_unlock();
return sc;
}
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