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742636f5bf
Additions to dma API with some small cleanups. Signed-off-by: Richard Hirst <rhirst@levanta.com> Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
#ifndef _M68K_DMA_MAPPING_H
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#define _M68K_DMA_MAPPING_H
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#include <asm/cache.h>
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struct scatterlist;
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static inline int dma_supported(struct device *dev, u64 mask)
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{
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return 1;
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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 0;
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}
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static inline int dma_get_cache_alignment(void)
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{
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return 1 << L1_CACHE_SHIFT;
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}
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static inline int dma_is_consistent(dma_addr_t dma_addr)
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{
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return 0;
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}
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extern void *dma_alloc_coherent(struct device *, size_t,
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dma_addr_t *, int);
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extern void dma_free_coherent(struct device *, size_t,
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void *, dma_addr_t);
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static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
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dma_addr_t *handle, int flag)
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{
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return dma_alloc_coherent(dev, size, handle, flag);
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}
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static inline void dma_free_noncoherent(struct device *dev, size_t size,
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void *addr, dma_addr_t handle)
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{
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dma_free_coherent(dev, size, addr, handle);
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}
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static inline void dma_cache_sync(void *vaddr, size_t size,
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enum dma_data_direction dir)
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{
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/* we use coherent allocation, so not much to do here. */
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}
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extern dma_addr_t dma_map_single(struct device *, void *, size_t,
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enum dma_data_direction);
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static inline void dma_unmap_single(struct device *dev, dma_addr_t addr,
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size_t size, enum dma_data_direction dir)
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{
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}
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extern dma_addr_t dma_map_page(struct device *, struct page *,
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unsigned long, size_t size,
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enum dma_data_direction);
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static inline void dma_unmap_page(struct device *dev, dma_addr_t address,
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size_t size, enum dma_data_direction dir)
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{
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}
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extern int dma_map_sg(struct device *, struct scatterlist *, int,
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enum dma_data_direction);
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static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
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int nhwentries, enum dma_data_direction dir)
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{
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}
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extern void dma_sync_single_for_device(struct device *, dma_addr_t, size_t,
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enum dma_data_direction);
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extern void dma_sync_sg_for_device(struct device *, struct scatterlist *, int,
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enum dma_data_direction);
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static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
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size_t size, enum dma_data_direction dir)
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{
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}
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static inline void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
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int nents, enum dma_data_direction dir)
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{
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}
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static inline int dma_mapping_error(dma_addr_t handle)
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{
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return 0;
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}
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#endif /* _M68K_DMA_MAPPING_H */
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