| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Copyright (C) 2013 Andes Technology Corporation |
| * Ken Kuo, Andes Technology Corporation <ken_kuo@andestech.com> |
| */ |
| #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 */ |
