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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSImplClassicRegion
*
* @brief This source file contains the implementation of
* rtems_region_create() and the Region Manager system initialization.
*/
/*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/rtems/regionimpl.h>
#include <rtems/rtems/attrimpl.h>
#include <rtems/rtems/support.h>
#include <rtems/score/apimutex.h>
#include <rtems/score/threadqimpl.h>
#include <rtems/sysinit.h>
rtems_status_code rtems_region_create(
rtems_name name,
void *starting_address,
uintptr_t length,
uintptr_t page_size,
rtems_attribute attribute_set,
rtems_id *id
)
{
rtems_status_code return_status;
Region_Control *the_region;
if ( !rtems_is_name_valid( name ) ) {
return RTEMS_INVALID_NAME;
}
if ( id == NULL ) {
return RTEMS_INVALID_ADDRESS;
}
if ( starting_address == NULL ) {
return RTEMS_INVALID_ADDRESS;
}
the_region = _Region_Allocate();
if ( !the_region )
return_status = RTEMS_TOO_MANY;
else {
_Thread_queue_Object_initialize( &the_region->Wait_queue );
if ( _Attributes_Is_priority( attribute_set ) ) {
the_region->wait_operations = &_Thread_queue_Operations_priority;
} else {
the_region->wait_operations = &_Thread_queue_Operations_FIFO;
}
the_region->maximum_segment_size = _Heap_Initialize(
&the_region->Memory, starting_address, length, page_size
);
if ( !the_region->maximum_segment_size ) {
_Region_Free( the_region );
return_status = RTEMS_INVALID_SIZE;
} else {
the_region->attribute_set = attribute_set;
*id = _Objects_Open_u32(
&_Region_Information,
&the_region->Object,
name
);
return_status = RTEMS_SUCCESSFUL;
}
}
_Objects_Allocator_unlock();
return return_status;
}
static void _Region_Manager_initialization( void )
{
_Objects_Initialize_information( &_Region_Information );
}
RTEMS_SYSINIT_ITEM(
_Region_Manager_initialization,
RTEMS_SYSINIT_CLASSIC_REGION,
RTEMS_SYSINIT_ORDER_MIDDLE
);
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