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/*
* Copyright (C) 2012 by Marc Kleine-Budde <mkl@pengutronix.de>
*
* This file is released under the GPLv2
*
*/
#ifndef __ASM_DMA_H
#define __ASM_DMA_H
#include <linux/kernel.h>
#include <linux/string.h>
#include <driver.h>
#define dma_alloc dma_alloc
static inline void *dma_alloc(size_t size)
{
return xmemalign(64, ALIGN(size, 64));
}
static inline void *dma_alloc_coherent(size_t size, dma_addr_t *dma_handle)
{
void *ret = xmemalign(4096, size);
if (dma_handle)
*dma_handle = (dma_addr_t)ret;
memset(ret, 0, size);
return ret;
}
static inline void *dma_alloc_writecombine(size_t size, dma_addr_t *dma_handle)
{
return dma_alloc_coherent(size, dma_handle);
}
static inline void dma_free_coherent(void *mem, dma_addr_t dma_handle,
size_t size)
{
free(mem);
}
static inline void dma_sync_single_for_cpu(dma_addr_t address, size_t size,
enum dma_data_direction dir)
{
}
static inline void dma_sync_single_for_device(dma_addr_t address, size_t size,
enum dma_data_direction dir)
{
}
#endif /* __ASM_DMA_H */
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