1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef ___ASM_SPARC_DMA_MAPPING_H 3 #define ___ASM_SPARC_DMA_MAPPING_H 4 5 #include <linux/scatterlist.h> 6 #include <linux/mm.h> 7 #include <linux/dma-debug.h> 8 9 static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, 10 enum dma_data_direction dir) 11 { 12 /* Since dma_{alloc,free}_noncoherent() allocated coherent memory, this 13 * routine can be a nop. 14 */ 15 } 16 17 extern const struct dma_map_ops *dma_ops; 18 extern const struct dma_map_ops pci32_dma_ops; 19 20 extern struct bus_type pci_bus_type; 21 22 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) 23 { 24 #ifdef CONFIG_SPARC_LEON 25 if (sparc_cpu_model == sparc_leon) 26 return &pci32_dma_ops; 27 #endif 28 #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI) 29 if (bus == &pci_bus_type) 30 return &pci32_dma_ops; 31 #endif 32 return dma_ops; 33 } 34 35 #endif 36