1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_DMA_MAPPING_H 3 #define _ASM_DMA_MAPPING_H 4 5 #include <linux/scatterlist.h> 6 #include <asm/dma-coherence.h> 7 #include <asm/cache.h> 8 9 #ifndef CONFIG_SGI_IP27 /* Kludge to fix 2.6.39 build for IP27 */ 10 #include <dma-coherence.h> 11 #endif 12 13 extern const struct dma_map_ops mips_default_dma_map_ops; 14 extern const struct dma_map_ops mips_swiotlb_ops; 15 16 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) 17 { 18 #ifdef CONFIG_SWIOTLB 19 return &mips_swiotlb_ops; 20 #else 21 return &mips_default_dma_map_ops; 22 #endif 23 } 24 25 #define arch_setup_dma_ops arch_setup_dma_ops 26 static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base, 27 u64 size, const struct iommu_ops *iommu, 28 bool coherent) 29 { 30 #ifdef CONFIG_DMA_PERDEV_COHERENT 31 dev->archdata.dma_coherent = coherent; 32 #endif 33 } 34 35 #endif /* _ASM_DMA_MAPPING_H */ 36