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/**
* @file
*
* @ingroup RTEMSImplClassicDPMem
*
* @brief This source file contains the implementation of
* rtems_port_create() and the Dual-Ported Memory Manager system
* initialization.
*/
/*
* COPYRIGHT (c) 1989-2014.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/rtems/dpmemimpl.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/support.h>
#include <rtems/score/address.h>
#include <rtems/score/thread.h>
#include <rtems/sysinit.h>
rtems_status_code rtems_port_create(
rtems_name name,
void *internal_start,
void *external_start,
uint32_t length,
rtems_id *id
)
{
Dual_ported_memory_Control *the_port;
if ( !rtems_is_name_valid( name ) )
return RTEMS_INVALID_NAME;
if ( !id )
return RTEMS_INVALID_ADDRESS;
if ( !_Addresses_Is_aligned( internal_start ) ||
!_Addresses_Is_aligned( external_start ) )
return RTEMS_INVALID_ADDRESS;
the_port = _Dual_ported_memory_Allocate();
if ( !the_port ) {
_Objects_Allocator_unlock();
return RTEMS_TOO_MANY;
}
the_port->internal_base = internal_start;
the_port->external_base = external_start;
the_port->length = length - 1;
*id = _Objects_Open_u32(
&_Dual_ported_memory_Information,
&the_port->Object,
name
);
_Objects_Allocator_unlock();
return RTEMS_SUCCESSFUL;
}
static void _Dual_ported_memory_Manager_initialization( void )
{
_Objects_Initialize_information( &_Dual_ported_memory_Information );
}
RTEMS_SYSINIT_ITEM(
_Dual_ported_memory_Manager_initialization,
RTEMS_SYSINIT_CLASSIC_DUAL_PORTED_MEMORY,
RTEMS_SYSINIT_ORDER_MIDDLE
);
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