board_fat_dma_alloc.c
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/****************************************************************************
*
* Copyright (C) 2016 PX4 Development Team. All rights reserved.
*
* 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.
* 3. Neither the name PX4 nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*
****************************************************************************/
/**
* @file board_dma_alloc.c
*
* Provide the board dma allocator interface.
*/
#include <px4_platform_common/px4_config.h>
#include <px4_platform/board_dma_alloc.h>
#include <board_config.h>
#if defined(CONFIG_FAT_DMAMEMORY)
# if !defined(CONFIG_GRAN)
# error microSD DMA support requires CONFIG_GRAN and CONFIG_FAT_DMAMEMORY
# endif
/*
* DMA-aware allocator stubs for the FAT filesystem.
*/
__EXPORT void *fat_dma_alloc(size_t size);
__EXPORT void fat_dma_free(FAR void *memory, size_t size);
void *
fat_dma_alloc(size_t size)
{
return board_dma_alloc(size);
}
void
fat_dma_free(FAR void *memory, size_t size)
{
return board_dma_free(memory, size);
}
#endif /* CONFIG_FAT_DMAMEMORY && CONFIG_GRAN */