mirror of https://gitee.com/openkylin/linux.git
36 lines
830 B
C
36 lines
830 B
C
#ifndef _ASM_S390_DMA_MAPPING_H
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#define _ASM_S390_DMA_MAPPING_H
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/scatterlist.h>
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#include <linux/dma-attrs.h>
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#include <linux/dma-debug.h>
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#include <linux/io.h>
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#define DMA_ERROR_CODE (~(dma_addr_t) 0x0)
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extern struct dma_map_ops s390_pci_dma_ops;
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static inline struct dma_map_ops *get_dma_ops(struct device *dev)
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{
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if (dev && dev->archdata.dma_ops)
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return dev->archdata.dma_ops;
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return &dma_noop_ops;
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}
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static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
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enum dma_data_direction direction)
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{
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}
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static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
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{
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if (!dev->dma_mask)
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return false;
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return addr + size - 1 <= *dev->dma_mask;
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}
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#endif /* _ASM_S390_DMA_MAPPING_H */
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