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
dma_alloc_coherent(size_t len,unsigned long * handle)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
dma_map_single(volatile void * vaddr,size_t len,enum dma_data_direction dir)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
dma_unmap_single(volatile void * vaddr,size_t len,unsigned long paddr)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