1 /*
2 * Copyright (C) 2013 Andes Technology Corporation
3 * Ken Kuo, Andes Technology Corporation <ken_kuo@andestech.com>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7 #ifndef __ASM_NDS_DMA_MAPPING_H
8 #define __ASM_NDS_DMA_MAPPING_H
9
10 #include <linux/dma-direction.h>
11
dma_alloc_coherent(size_t len,unsigned long * handle)12 static void *dma_alloc_coherent(size_t len, unsigned long *handle)
13 {
14 *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
15 return (void *)*handle;
16 }
17
dma_map_single(volatile void * vaddr,size_t len,enum dma_data_direction dir)18 static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
19 enum dma_data_direction dir)
20 {
21 return (unsigned long)vaddr;
22 }
23
dma_unmap_single(volatile void * vaddr,size_t len,unsigned long paddr)24 static inline void dma_unmap_single(volatile void *vaddr, size_t len,
25 unsigned long paddr)
26 {
27 }
28
29 #endif /* __ASM_NDS_DMA_MAPPING_H */
30