60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright <EFBFBD> 2009 by Bob Cousins
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef _DMA_TARGET_H
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#define _DMA_TARGET_H
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#include <stdbool.h>
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#include <stdlib.h>
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/* DMA Channel assignments */
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#ifdef GIGABEAT_F
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#define DMA_CHAN_ATA 0
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#define DMA_CHAN_AUDIO_OUT 2
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#elif defined(MINI2440)
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#define DMA_CHAN_SD 0
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#define DMA_CHAN_AUDIO_OUT 2
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#else
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#error Unsupported target
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#endif
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struct dma_request
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{
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volatile void *source_addr;
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volatile void *dest_addr;
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unsigned long count;
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unsigned long source_control;
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unsigned long dest_control;
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unsigned long source_map;
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unsigned long control;
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void (*callback)(void);
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};
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void dma_init(void);
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void dma_enable_channel(int channel, struct dma_request *request);
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inline void dma_disable_channel(int channel);
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void dma_retain(void);
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void dma_release(void);
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#endif
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