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-debug.h>
 9#include <linux/io.h>
10
11#define DMA_ERROR_CODE		(~(dma_addr_t) 0x0)
12
13extern struct dma_map_ops s390_pci_dma_ops;
14
15static inline struct dma_map_ops *get_dma_ops(struct device *dev)
16{
17	if (dev && dev->archdata.dma_ops)
18		return dev->archdata.dma_ops;
19	return &dma_noop_ops;
20}
21
22static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
23				  enum dma_data_direction direction)
24{
25}
26
27static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
28{
29	if (!dev->dma_mask)
30		return false;
31	return addr + size - 1 <= *dev->dma_mask;
32}
33
34#endif /* _ASM_S390_DMA_MAPPING_H */