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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2012 by Marc Kleine-Budde <mkl@pengutronix.de>
*/
#ifndef __DMA_H
#define __DMA_H
#include <malloc.h>
#include <xfuncs.h>
#include <dma-dir.h>
#include <asm/dma.h>
#include <driver.h>
#define DMA_ADDRESS_BROKEN NULL
#ifndef dma_alloc
static inline void *dma_alloc(size_t size)
{
return xmalloc(size);
}
#endif
#ifndef dma_free
static inline void dma_free(void *mem)
{
free(mem);
}
#endif
dma_addr_t dma_map_single(struct device_d *dev, void *ptr, size_t size,
enum dma_data_direction dir);
void dma_unmap_single(struct device_d *dev, dma_addr_t addr, size_t size,
enum dma_data_direction dir);
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
#define DMA_MASK_NONE 0x0ULL
static inline void dma_set_mask(struct device_d *dev, u64 dma_mask)
{
dev->dma_mask = dma_mask;
}
#define DMA_ERROR_CODE (~(dma_addr_t)0)
static inline int dma_mapping_error(struct device_d *dev, dma_addr_t dma_addr)
{
return dma_addr == DMA_ERROR_CODE ||
(dev->dma_mask && dma_addr > dev->dma_mask);
}
/* streaming DMA - implement the below calls to support HAS_DMA */
void dma_sync_single_for_cpu(dma_addr_t address, size_t size,
enum dma_data_direction dir);
void dma_sync_single_for_device(dma_addr_t address, size_t size,
enum dma_data_direction dir);
void *dma_alloc_coherent(size_t size, dma_addr_t *dma_handle);
void dma_free_coherent(void *mem, dma_addr_t dma_handle, size_t size);
void *dma_alloc_writecombine(size_t size, dma_addr_t *dma_handle);
#endif /* __DMA_H */
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