37 lines
831 B
C
37 lines
831 B
C
|
/* SPDX-License-Identifier: GPL-2.0+ */
|
||
|
|
/*
|
||
|
|
* (C) Copyright 2007
|
||
|
|
* Stelian Pop <stelian@popies.net>
|
||
|
|
* Lead Tech Design <www.leadtechdesign.com>
|
||
|
|
*/
|
||
|
|
#ifndef __ASM_ARM_DMA_MAPPING_H
|
||
|
|
#define __ASM_ARM_DMA_MAPPING_H
|
||
|
|
|
||
|
|
#include <linux/dma-direction.h>
|
||
|
|
|
||
|
|
#define dma_mapping_error(x, y) 0
|
||
|
|
|
||
|
|
static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
|
||
|
|
{
|
||
|
|
*handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, ROUND(len, ARCH_DMA_MINALIGN));
|
||
|
|
return (void *)*handle;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void dma_free_coherent(void *addr)
|
||
|
|
{
|
||
|
|
free(addr);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
|
||
|
|
enum dma_data_direction dir)
|
||
|
|
{
|
||
|
|
return (unsigned long)vaddr;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void dma_unmap_single(volatile void *vaddr, size_t len,
|
||
|
|
unsigned long paddr)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* __ASM_ARM_DMA_MAPPING_H */
|