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>
11 #include <linux/dma-debug.h>
13 #define ARCH_HAS_DMA_GET_REQUIRED_MASK
15 extern struct dma_map_ops *dma_ops;
16 extern struct ia64_machine_vector ia64_mv;
17 extern void set_iommu_machvec(void);
19 extern void machvec_dma_sync_single(struct device *, dma_addr_t, size_t,
20 enum dma_data_direction);
21 extern void machvec_dma_sync_sg(struct device *, struct scatterlist *, int,
22 enum dma_data_direction);
24 static inline void *dma_alloc_coherent(struct device *dev, size_t size,
25 dma_addr_t *daddr, gfp_t gfp)
27 struct dma_map_ops *ops = platform_dma_get_ops(dev);
30 caddr = ops->alloc_coherent(dev, size, daddr, gfp);
31 debug_dma_alloc_coherent(dev, size, *daddr, caddr);
35 static inline void dma_free_coherent(struct device *dev, size_t size,
36 void *caddr, dma_addr_t daddr)
38 struct dma_map_ops *ops = platform_dma_get_ops(dev);
39 debug_dma_free_coherent(dev, size, caddr, daddr);
40 ops->free_coherent(dev, size, caddr, daddr);
43 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
44 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
46 #define get_dma_ops(dev) platform_dma_get_ops(dev)
47 #define flush_write_buffers()
49 #include <asm-generic/dma-mapping-common.h>
51 static inline int dma_mapping_error(struct device *dev, dma_addr_t daddr)
53 struct dma_map_ops *ops = platform_dma_get_ops(dev);
54 return ops->mapping_error(dev, daddr);
57 static inline int dma_supported(struct device *dev, u64 mask)
59 struct dma_map_ops *ops = platform_dma_get_ops(dev);
60 return ops->dma_supported(dev, mask);
64 dma_set_mask (struct device *dev, u64 mask)
66 if (!dev->dma_mask || !dma_supported(dev, mask))
68 *dev->dma_mask = mask;
72 extern int dma_get_cache_alignment(void);
75 dma_cache_sync (struct device *dev, void *vaddr, size_t size,
76 enum dma_data_direction dir)
79 * IA-64 is cache-coherent, so this is mostly a no-op. However, we do need to
80 * ensure that dma_cache_sync() enforces order, hence the mb().
85 #define dma_is_consistent(d, h) (1) /* all we do is coherent memory... */
87 #endif /* _ASM_IA64_DMA_MAPPING_H */