1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_DMA_MAPPING_H 3 #define _ASM_DMA_MAPPING_H 4 5 #include <asm/cache.h> 6 #include <asm/cacheflush.h> 7 8 extern unsigned long __nongprelbss dma_coherent_mem_start; 9 extern unsigned long __nongprelbss dma_coherent_mem_end; 10 11 extern const struct dma_map_ops frv_dma_ops; 12 get_arch_dma_ops(struct bus_type * bus)13static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) 14 { 15 return &frv_dma_ops; 16 } 17 18 static inline dma_cache_sync(struct device * dev,void * vaddr,size_t size,enum dma_data_direction direction)19void dma_cache_sync(struct device *dev, void *vaddr, size_t size, 20 enum dma_data_direction direction) 21 { 22 flush_write_buffers(); 23 } 24 25 #endif /* _ASM_DMA_MAPPING_H */ 26