1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_METAG_DMA_MAPPING_H 3 #define _ASM_METAG_DMA_MAPPING_H 4 5 extern const struct dma_map_ops metag_dma_ops; 6 get_arch_dma_ops(struct bus_type * bus)7static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) 8 { 9 return &metag_dma_ops; 10 } 11 12 /* 13 * dma_alloc_attrs() always returns non-cacheable memory, so there's no need to 14 * do any flushing here. 15 */ 16 static inline void dma_cache_sync(struct device * dev,void * vaddr,size_t size,enum dma_data_direction direction)17dma_cache_sync(struct device *dev, void *vaddr, size_t size, 18 enum dma_data_direction direction) 19 { 20 } 21 22 #endif 23