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- /*
- * Copyright (C) 2013 Andes Technology Corporation
- * Ken Kuo, Andes Technology Corporation <ken_kuo@andestech.com>
- *
- * 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 */
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