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