1 #ifndef _ASM_IA64_DMA_MAPPING_H
2 #define _ASM_IA64_DMA_MAPPING_H
5 * Copyright (C) 2003-2004 Hewlett-Packard Co
6 * David Mosberger-Tang <davidm@hpl.hp.com>
8 #include <asm/machvec.h>
9 #include <linux/scatterlist.h>
10 #include <asm/swiotlb.h>
12 #define ARCH_HAS_DMA_GET_REQUIRED_MASK
14 extern struct dma_map_ops *dma_ops;
15 extern struct ia64_machine_vector ia64_mv;
16 extern void set_iommu_machvec(void);
18 extern void machvec_dma_sync_single(struct device *, dma_addr_t, size_t,
19 enum dma_data_direction);
20 extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int,
21 enum dma_data_direction);
23 static inline void *dma_alloc_coherent(struct device *dev, size_t size,
24 dma_addr_t *daddr, gfp_t gfp)
26 struct dma_map_ops *ops = platform_dma_get_ops(dev);
27 return ops->alloc_coherent(dev, size, daddr, gfp);
30 static inline void dma_free_coherent(struct device *dev, size_t size,
31 void *caddr, dma_addr_t daddr)
33 struct dma_map_ops *ops = platform_dma_get_ops(dev);
34 ops->free_coherent(dev, size, caddr, daddr);
37 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
38 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
40 #define get_dma_ops(dev) platform_dma_get_ops(dev)
41 #define flush_write_buffers()
43 #include <asm-generic/dma-mapping-common.h>
45 static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr)
47 struct dma_map_ops *ops = platform_dma_get_ops(dev);
48 return ops->mapping_error(dev, daddr);
51 static inline int dma_supported(struct device *dev, u64 mask)
53 struct dma_map_ops *ops = platform_dma_get_ops(dev);
54 return ops->dma_supported(dev, mask);
58 dma_set_mask (struct device *dev, u64 mask)
60 if (!dev->dma_mask || !dma_supported(dev, mask))
62 *dev->dma_mask = mask;
66 extern int dma_get_cache_alignment(void);
69 dma_cache_sync (struct device *dev, void *vaddr, size_t size,
70 enum dma_data_direction dir)
73 * IA-64 is cache-coherent, so this is mostly a no-op. However, we do need to
74 * ensure that dma_cache_sync() enforces order, hence the mb().
79 #define dma_is_consistent(d, h) (1) /* all we do is coherent memory... */
81 #endif /* _ASM_IA64_DMA_MAPPING_H */