1 #ifndef _ASM_S390_DMA_MAPPING_H
2 #define _ASM_S390_DMA_MAPPING_H
3
4 #include <linux/kernel.h>
5 #include <linux/types.h>
6 #include <linux/mm.h>
7 #include <linux/scatterlist.h>
8 #include <linux/dma-attrs.h>
9 #include <linux/dma-debug.h>
10 #include <linux/io.h>
11
12 #define DMA_ERROR_CODE (~(dma_addr_t) 0x0)
13
14 extern struct dma_map_ops s390_dma_ops;
15
get_dma_ops(struct device * dev)16 static inline struct dma_map_ops *get_dma_ops(struct device *dev)
17 {
18 return &s390_dma_ops;
19 }
20
dma_cache_sync(struct device * dev,void * vaddr,size_t size,enum dma_data_direction direction)21 static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
22 enum dma_data_direction direction)
23 {
24 }
25
26 #include <asm-generic/dma-mapping-common.h>
27
dma_capable(struct device * dev,dma_addr_t addr,size_t size)28 static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
29 {
30 if (!dev->dma_mask)
31 return false;
32 return addr + size - 1 <= *dev->dma_mask;
33 }
34
35 #endif /* _ASM_S390_DMA_MAPPING_H */
36