1#ifndef _ASM_IA64_DMA_MAPPING_H
2#define _ASM_IA64_DMA_MAPPING_H
3
4/*
5 * Copyright (C) 2003-2004 Hewlett-Packard Co
6 *	David Mosberger-Tang <davidm@hpl.hp.com>
7 */
8#include <asm/machvec.h>
9
10#define dma_alloc_coherent	platform_dma_alloc_coherent
11/* coherent mem. is cheap */
12static inline void *
13dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
14		      gfp_t flag)
15{
16	return dma_alloc_coherent(dev, size, dma_handle, flag);
17}
18#define dma_free_coherent	platform_dma_free_coherent
19static inline void
20dma_free_noncoherent(struct device *dev, size_t size, void *cpu_addr,
21		     dma_addr_t dma_handle)
22{
23	dma_free_coherent(dev, size, cpu_addr, dma_handle);
24}
25#define dma_map_single		platform_dma_map_single
26#define dma_map_sg		platform_dma_map_sg
27#define dma_unmap_single	platform_dma_unmap_single
28#define dma_unmap_sg		platform_dma_unmap_sg
29#define dma_sync_single_for_cpu	platform_dma_sync_single_for_cpu
30#define dma_sync_sg_for_cpu	platform_dma_sync_sg_for_cpu
31#define dma_sync_single_for_device platform_dma_sync_single_for_device
32#define dma_sync_sg_for_device	platform_dma_sync_sg_for_device
33#define dma_mapping_error	platform_dma_mapping_error
34
35#define dma_map_page(dev, pg, off, size, dir)				\
36	dma_map_single(dev, page_address(pg) + (off), (size), (dir))
37#define dma_unmap_page(dev, dma_addr, size, dir)			\
38	dma_unmap_single(dev, dma_addr, size, dir)
39
40/*
41 * Rest of this file is part of the "Advanced DMA API".  Use at your own risk.
42 * See Documentation/DMA-API.txt for details.
43 */
44
45#define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir)	\
46	dma_sync_single_for_cpu(dev, dma_handle, size, dir)
47#define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir)	\
48	dma_sync_single_for_device(dev, dma_handle, size, dir)
49
50#define dma_supported		platform_dma_supported
51
52static inline int
53dma_set_mask (struct device *dev, u64 mask)
54{
55	if (!dev->dma_mask || !dma_supported(dev, mask))
56		return -EIO;
57	*dev->dma_mask = mask;
58	return 0;
59}
60
61extern int dma_get_cache_alignment(void);
62
63static inline void
64dma_cache_sync (struct device *dev, void *vaddr, size_t size,
65	enum dma_data_direction dir)
66{
67	/*
68	 * IA-64 is cache-coherent, so this is mostly a no-op.  However, we do need to
69	 * ensure that dma_cache_sync() enforces order, hence the mb().
70	 */
71	mb();
72}
73
74#define dma_is_consistent(d, h)	(1)	/* all we do is coherent memory... */
75
76#endif /* _ASM_IA64_DMA_MAPPING_H */
77