| /* | |
| * Copyright (C) 2013 Andes Technology Corporation | |
| * Ken Kuo, Andes Technology Corporation <[email protected]> | |
| * | |
| * SPDX-License-Identifier: GPL-2.0+ | |
| */ | |
| #ifndef __ASM_NDS_DMA_MAPPING_H | |
| #define __ASM_NDS_DMA_MAPPING_H | |
| enum dma_data_direction { | |
| DMA_BIDIRECTIONAL = 0, | |
| DMA_TO_DEVICE = 1, | |
| DMA_FROM_DEVICE = 2, | |
| }; | |
| 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 */ |