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 #elif defined(CONFIG_MIPS_DMA_DEFAULT) 21 return &mips_default_dma_map_ops; 22 #else 23 return &dma_direct_ops; 24 #endif 25 } 26 27 #define arch_setup_dma_ops arch_setup_dma_ops 28 static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base, 29 u64 size, const struct iommu_ops *iommu, 30 bool coherent) 31 { 32 #ifdef CONFIG_DMA_PERDEV_COHERENT 33 dev->archdata.dma_coherent = coherent; 34 #endif 35 } 36 37 #endif /* _ASM_DMA_MAPPING_H */ 38