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c9eb6172c3
After we removed all the dead wood it turns out only two architectures actually implement dma_cache_sync as a real op: mips and parisc. Add a cache_sync method to struct dma_map_ops and implement it for the mips defualt DMA ops, and the parisc pa11 ops. Note that arm, arc and openrisc support DMA_ATTR_NON_CONSISTENT, but never provided a functional dma_cache_sync implementations, which seems somewhat odd. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Robin Murphy <robin.murphy@arm.com>
26 lines
582 B
C
26 lines
582 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-debug.h>
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#include <linux/io.h>
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extern const struct dma_map_ops s390_pci_dma_ops;
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static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
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{
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return &dma_noop_ops;
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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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