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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07008#include <asm/machvec.h>
Jens Axboe9b6eccf2007-10-16 11:27:26 +02009#include <linux/scatterlist.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070010
FUJITA Tomonori3a80b6a2008-09-08 18:10:10 +090011#define dma_alloc_coherent(dev, size, handle, gfp) \
12 platform_dma_alloc_coherent(dev, size, handle, (gfp) | GFP_DMA)
13
Roland Dreierb7de8e72007-02-14 00:32:53 -080014/* coherent mem. is cheap */
15static inline void *
16dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
17 gfp_t flag)
18{
19 return dma_alloc_coherent(dev, size, dma_handle, flag);
20}
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#define dma_free_coherent platform_dma_free_coherent
Roland Dreierb7de8e72007-02-14 00:32:53 -080022static inline void
23dma_free_noncoherent(struct device *dev, size_t size, void *cpu_addr,
24 dma_addr_t dma_handle)
25{
26 dma_free_coherent(dev, size, cpu_addr, dma_handle);
27}
Arthur Kepner309df0c2008-04-29 01:00:32 -070028#define dma_map_single_attrs platform_dma_map_single_attrs
29static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
30 size_t size, int dir)
31{
32 return dma_map_single_attrs(dev, cpu_addr, size, dir, NULL);
33}
34#define dma_map_sg_attrs platform_dma_map_sg_attrs
35static inline int dma_map_sg(struct device *dev, struct scatterlist *sgl,
36 int nents, int dir)
37{
38 return dma_map_sg_attrs(dev, sgl, nents, dir, NULL);
39}
40#define dma_unmap_single_attrs platform_dma_unmap_single_attrs
41static inline void dma_unmap_single(struct device *dev, dma_addr_t cpu_addr,
42 size_t size, int dir)
43{
44 return dma_unmap_single_attrs(dev, cpu_addr, size, dir, NULL);
45}
46#define dma_unmap_sg_attrs platform_dma_unmap_sg_attrs
47static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sgl,
48 int nents, int dir)
49{
50 return dma_unmap_sg_attrs(dev, sgl, nents, dir, NULL);
51}
Linus Torvalds1da177e2005-04-16 15:20:36 -070052#define dma_sync_single_for_cpu platform_dma_sync_single_for_cpu
53#define dma_sync_sg_for_cpu platform_dma_sync_sg_for_cpu
54#define dma_sync_single_for_device platform_dma_sync_single_for_device
55#define dma_sync_sg_for_device platform_dma_sync_sg_for_device
56#define dma_mapping_error platform_dma_mapping_error
57
58#define dma_map_page(dev, pg, off, size, dir) \
59 dma_map_single(dev, page_address(pg) + (off), (size), (dir))
60#define dma_unmap_page(dev, dma_addr, size, dir) \
61 dma_unmap_single(dev, dma_addr, size, dir)
62
63/*
64 * Rest of this file is part of the "Advanced DMA API". Use at your own risk.
65 * See Documentation/DMA-API.txt for details.
66 */
67
68#define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir) \
69 dma_sync_single_for_cpu(dev, dma_handle, size, dir)
70#define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir) \
71 dma_sync_single_for_device(dev, dma_handle, size, dir)
72
73#define dma_supported platform_dma_supported
74
75static inline int
76dma_set_mask (struct device *dev, u64 mask)
77{
78 if (!dev->dma_mask || !dma_supported(dev, mask))
79 return -EIO;
80 *dev->dma_mask = mask;
81 return 0;
82}
83
John W. Linvillee1531b42005-11-07 00:57:54 -080084extern int dma_get_cache_alignment(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -070085
86static inline void
Ralf Baechled3fa72e2006-12-06 20:38:56 -080087dma_cache_sync (struct device *dev, void *vaddr, size_t size,
88 enum dma_data_direction dir)
Linus Torvalds1da177e2005-04-16 15:20:36 -070089{
90 /*
91 * IA-64 is cache-coherent, so this is mostly a no-op. However, we do need to
92 * ensure that dma_cache_sync() enforces order, hence the mb().
93 */
94 mb();
95}
96
Ralf Baechlef67637e2006-12-06 20:38:54 -080097#define dma_is_consistent(d, h) (1) /* all we do is coherent memory... */
Linus Torvalds1da177e2005-04-16 15:20:36 -070098
99#endif /* _ASM_IA64_DMA_MAPPING_H */