dma-mapping.h 830 字节
Newer Older
J
Jan Glauber 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13
#ifndef _ASM_S390_DMA_MAPPING_H
#define _ASM_S390_DMA_MAPPING_H

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/scatterlist.h>
#include <linux/dma-attrs.h>
#include <linux/dma-debug.h>
#include <linux/io.h>

#define DMA_ERROR_CODE		(~(dma_addr_t) 0x0)

14
extern struct dma_map_ops s390_pci_dma_ops;
J
Jan Glauber 已提交
15 16 17

static inline struct dma_map_ops *get_dma_ops(struct device *dev)
{
18 19 20
	if (dev && dev->archdata.dma_ops)
		return dev->archdata.dma_ops;
	return &dma_noop_ops;
J
Jan Glauber 已提交
21 22
}

23 24 25 26
static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
				  enum dma_data_direction direction)
{
}
J
Jan Glauber 已提交
27 28 29 30

static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
	if (!dev->dma_mask)
31
		return false;
J
Jan Glauber 已提交
32 33 34 35
	return addr + size - 1 <= *dev->dma_mask;
}

#endif /* _ASM_S390_DMA_MAPPING_H */