1 #ifndef _ASM_DMA_MAPPING_H
2 #define _ASM_DMA_MAPPING_H
3
4 #include <linux/scatterlist.h>
5 #include <asm/dma-coherence.h>
6 #include <asm/cache.h>
7
8 #ifndef CONFIG_SGI_IP27 /* Kludge to fix 2.6.39 build for IP27 */
9 #include <dma-coherence.h>
10 #endif
11
12 extern struct dma_map_ops *mips_dma_map_ops;
13
get_dma_ops(struct device * dev)14 static inline struct dma_map_ops *get_dma_ops(struct device *dev)
15 {
16 if (dev && dev->archdata.dma_ops)
17 return dev->archdata.dma_ops;
18 else
19 return mips_dma_map_ops;
20 }
21
dma_capable(struct device * dev,dma_addr_t addr,size_t size)22 static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
23 {
24 if (!dev->dma_mask)
25 return false;
26
27 return addr + size <= *dev->dma_mask;
28 }
29
dma_mark_clean(void * addr,size_t size)30 static inline void dma_mark_clean(void *addr, size_t size) {}
31
32 extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
33 enum dma_data_direction direction);
34
35 #define arch_setup_dma_ops arch_setup_dma_ops
arch_setup_dma_ops(struct device * dev,u64 dma_base,u64 size,const struct iommu_ops * iommu,bool coherent)36 static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
37 u64 size, const struct iommu_ops *iommu,
38 bool coherent)
39 {
40 #ifdef CONFIG_DMA_PERDEV_COHERENT
41 dev->archdata.dma_coherent = coherent;
42 #endif
43 }
44
45 #endif /* _ASM_DMA_MAPPING_H */
46