diff options
Diffstat (limited to 'bsps/shared/irq/irq-entry-remove.c')
-rw-r--r-- | bsps/shared/irq/irq-entry-remove.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/bsps/shared/irq/irq-entry-remove.c b/bsps/shared/irq/irq-entry-remove.c new file mode 100644 index 0000000000..3e5fd33fbe --- /dev/null +++ b/bsps/shared/irq/irq-entry-remove.c @@ -0,0 +1,115 @@ +/* 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; +} |