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