forked from Imagelibrary/rtems
123 lines
2.1 KiB
C
123 lines
2.1 KiB
C
/**
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* @file
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*
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* @ingroup ClassicCache
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*/
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/*
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* Copyright (c) 2014 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Dornierstr. 4
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rtems.h>
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#include <rtems/malloc.h>
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#include <rtems/score/apimutex.h>
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#include <rtems/score/heapimpl.h>
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#include <rtems/score/sysstate.h>
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static Heap_Control cache_coherent_heap_instance;
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static Heap_Control *cache_coherent_heap;
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void *rtems_cache_coherent_allocate(
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size_t size,
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uintptr_t alignment,
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uintptr_t boundary
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)
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{
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void *ptr;
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Heap_Control *heap;
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_RTEMS_Lock_allocator();
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heap = cache_coherent_heap;
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if ( heap == NULL ) {
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heap = RTEMS_Malloc_Heap;
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}
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ptr = _Heap_Allocate_aligned_with_boundary(
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heap,
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size,
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alignment,
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boundary
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);
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_RTEMS_Unlock_allocator();
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return ptr;
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}
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void rtems_cache_coherent_free( void *ptr )
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{
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Heap_Control *heap;
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_RTEMS_Lock_allocator();
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heap = cache_coherent_heap;
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if ( heap != NULL ) {
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if ( _Heap_Free( heap, ptr ) ) {
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heap = NULL;
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} else {
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heap = RTEMS_Malloc_Heap;
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}
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} else {
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heap = RTEMS_Malloc_Heap;
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}
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if ( heap != NULL ) {
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_Heap_Free( heap, ptr );
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}
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_RTEMS_Unlock_allocator();
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}
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static void add_area(
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void *area_begin,
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uintptr_t area_size
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)
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{
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Heap_Control *heap = cache_coherent_heap;
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if ( heap == NULL ) {
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bool ok;
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heap = &cache_coherent_heap_instance;
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ok = _Heap_Initialize( heap, area_begin, area_size, 0 );
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if ( ok ) {
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cache_coherent_heap = heap;
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}
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} else {
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_Heap_Extend( heap, area_begin, area_size, 0 );
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}
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}
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void rtems_cache_coherent_add_area(
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void *area_begin,
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uintptr_t area_size
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)
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{
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if ( _System_state_Is_up( _System_state_Get()) ) {
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_RTEMS_Lock_allocator();
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add_area( area_begin, area_size );
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_RTEMS_Unlock_allocator();
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} else {
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add_area( area_begin, area_size );
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}
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}
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