1 #ifndef ___ASM_SPARC_DMA_MAPPING_H 2 #define ___ASM_SPARC_DMA_MAPPING_H 3 4 #include <linux/scatterlist.h> 5 #include <linux/mm.h> 6 #include <linux/dma-debug.h> 7 8 #define DMA_ERROR_CODE (~(dma_addr_t)0x0) 9 10 #define HAVE_ARCH_DMA_SUPPORTED 1 11 int dma_supported(struct device *dev, u64 mask); 12 13 static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, 14 enum dma_data_direction dir) 15 { 16 /* Since dma_{alloc,free}_noncoherent() allocated coherent memory, this 17 * routine can be a nop. 18 */ 19 } 20 21 extern struct dma_map_ops *dma_ops; 22 extern struct dma_map_ops *leon_dma_ops; 23 extern struct dma_map_ops pci32_dma_ops; 24 25 extern struct bus_type pci_bus_type; 26 27 static inline struct dma_map_ops *get_dma_ops(struct device *dev) 28 { 29 #ifdef CONFIG_SPARC_LEON 30 if (sparc_cpu_model == sparc_leon) 31 return leon_dma_ops; 32 #endif 33 #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI) 34 if (dev->bus == &pci_bus_type) 35 return &pci32_dma_ops; 36 #endif 37 return dma_ops; 38 } 39 40 #define HAVE_ARCH_DMA_SET_MASK 1 41 42 static inline int dma_set_mask(struct device *dev, u64 mask) 43 { 44 #ifdef CONFIG_PCI 45 if (dev->bus == &pci_bus_type) { 46 if (!dev->dma_mask || !dma_supported(dev, mask)) 47 return -EINVAL; 48 *dev->dma_mask = mask; 49 return 0; 50 } 51 #endif 52 return -EINVAL; 53 } 54 55 #include <asm-generic/dma-mapping-common.h> 56 57 #endif 58