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Diffstat (limited to 'bsps/shared/irq/irq-handler-install.c')
-rw-r--r-- | bsps/shared/irq/irq-handler-install.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/bsps/shared/irq/irq-handler-install.c b/bsps/shared/irq/irq-handler-install.c new file mode 100644 index 0000000000..2474d792e6 --- /dev/null +++ b/bsps/shared/irq/irq-handler-install.c @@ -0,0 +1,114 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + +/** + * @file + * + * @ingroup bsp_interrupt + * + * @brief This source file contains the rtems_interrupt_handler_install() + * implementation. + */ + +/* + * 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> +#include <rtems/malloc.h> + +#include <stdlib.h> + +static rtems_status_code bsp_interrupt_handler_do_replace( + rtems_vector_number vector, + const char *info, + rtems_interrupt_handler routine, + void *arg +) +{ + rtems_interrupt_entry *entry; + rtems_interrupt_entry **unused; + + entry = bsp_interrupt_entry_find( vector, routine, arg, &unused ); + + if ( entry == NULL ) { + return RTEMS_UNSATISFIED; + } + + entry->handler = routine; + entry->info = info; + + return RTEMS_SUCCESSFUL; +} + +static rtems_status_code bsp_interrupt_handler_replace( + rtems_vector_number vector, + const char *info, + rtems_interrupt_handler routine, + void *arg +) +{ + rtems_status_code sc; + + sc = bsp_interrupt_check_and_lock( vector, routine ); + + if ( sc != RTEMS_SUCCESSFUL ) { + return sc; + } + + sc = bsp_interrupt_handler_do_replace( vector, info, routine, arg ); + bsp_interrupt_unlock(); + + return sc; +} + +rtems_status_code rtems_interrupt_handler_install( + rtems_vector_number vector, + const char *info, + rtems_option options, + rtems_interrupt_handler routine, + void *arg +) +{ + rtems_interrupt_entry *entry; + rtems_status_code sc; + + if ( RTEMS_INTERRUPT_IS_REPLACE( options ) ) { + return bsp_interrupt_handler_replace( vector, info, routine, arg ); + } + + entry = rtems_malloc( sizeof( *entry ) ); + + if ( entry == NULL ) { + return RTEMS_NO_MEMORY; + } + + rtems_interrupt_entry_initialize( entry, routine, arg, info ); + sc = rtems_interrupt_entry_install( vector, options, entry ); + + if ( sc != RTEMS_SUCCESSFUL ) { + free( entry ); + } + + return sc; +} |