3b9c6c11f5
Architectures implement dma_is_consistent() in different ways (some misinterpret the definition of API in DMA-API.txt). So it hasn't been so useful for drivers. We have only one user of the API in tree. Unlikely out-of-tree drivers use the API. Even if we fix dma_is_consistent() in some architectures, it doesn't look useful at all. It was invented long ago for some old systems that can't allocate coherent memory at all. It's better to export only APIs that are definitely necessary for drivers. Let's remove this API. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
#ifndef _ALPHA_DMA_MAPPING_H
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#define _ALPHA_DMA_MAPPING_H
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#include <linux/dma-attrs.h>
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extern struct dma_map_ops *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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return dma_ops;
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}
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#include <asm-generic/dma-mapping-common.h>
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static inline void *dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t gfp)
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{
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return get_dma_ops(dev)->alloc_coherent(dev, size, dma_handle, gfp);
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}
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static inline void dma_free_coherent(struct device *dev, size_t size,
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void *vaddr, dma_addr_t dma_handle)
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{
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get_dma_ops(dev)->free_coherent(dev, size, vaddr, dma_handle);
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}
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static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
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{
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return get_dma_ops(dev)->mapping_error(dev, dma_addr);
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}
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static inline int dma_supported(struct device *dev, u64 mask)
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{
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return get_dma_ops(dev)->dma_supported(dev, mask);
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}
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static inline int dma_set_mask(struct device *dev, u64 mask)
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{
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return get_dma_ops(dev)->set_dma_mask(dev, mask);
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}
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#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
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#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
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#define dma_cache_sync(dev, va, size, dir) ((void)0)
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#endif /* _ALPHA_DMA_MAPPING_H */
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