u-boot/arch/nds32/include/asm/dma-mapping.h
Masahiro Yamada b27af39935 dma: import linux/dma-direction.h to consolidate enum dma_data_direction
Import include/linux/dma-direction.h from Linux 4.13-rc7 and delete
duplicated definitions of enum dma_data_direction.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2017-09-12 18:02:23 -04:00

29 lines
709 B
C

/*
* Copyright (C) 2013 Andes Technology Corporation
* Ken Kuo, Andes Technology Corporation <ken_kuo@andestech.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __ASM_NDS_DMA_MAPPING_H
#define __ASM_NDS_DMA_MAPPING_H
#include <linux/dma-direction.h>
static void *dma_alloc_coherent(size_t len, unsigned long *handle)
{
*handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
return (void *)*handle;
}
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_NDS_DMA_MAPPING_H */