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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 #define dma_alloc_noncoherent   platform_dma_alloc_coherent     /* coherent mem. is cheap */
12 #define dma_free_coherent       platform_dma_free_coherent
13 #define dma_free_noncoherent    platform_dma_free_coherent
14 #define dma_map_single          platform_dma_map_single
15 #define dma_map_sg              platform_dma_map_sg
16 #define dma_unmap_single        platform_dma_unmap_single
17 #define dma_unmap_sg            platform_dma_unmap_sg
18 #define dma_sync_single_for_cpu platform_dma_sync_single_for_cpu
19 #define dma_sync_sg_for_cpu     platform_dma_sync_sg_for_cpu
20 #define dma_sync_single_for_device platform_dma_sync_single_for_device
21 #define dma_sync_sg_for_device  platform_dma_sync_sg_for_device
22 #define dma_mapping_error       platform_dma_mapping_error
23
24 #define dma_map_page(dev, pg, off, size, dir)                           \
25         dma_map_single(dev, page_address(pg) + (off), (size), (dir))
26 #define dma_unmap_page(dev, dma_addr, size, dir)                        \
27         dma_unmap_single(dev, dma_addr, size, dir)
28
29 /*
30  * Rest of this file is part of the "Advanced DMA API".  Use at your own risk.
31  * See Documentation/DMA-API.txt for details.
32  */
33
34 #define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir)       \
35         dma_sync_single_for_cpu(dev, dma_handle, size, dir)
36 #define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir)    \
37         dma_sync_single_for_device(dev, dma_handle, size, dir)
38
39 #define dma_supported           platform_dma_supported
40
41 static inline int
42 dma_set_mask (struct device *dev, u64 mask)
43 {
44         if (!dev->dma_mask || !dma_supported(dev, mask))
45                 return -EIO;
46         *dev->dma_mask = mask;
47         return 0;
48 }
49
50 extern int dma_get_cache_alignment(void);
51
52 static inline void
53 dma_cache_sync (struct device *dev, void *vaddr, size_t size,
54         enum dma_data_direction dir)
55 {
56         /*
57          * IA-64 is cache-coherent, so this is mostly a no-op.  However, we do need to
58          * ensure that dma_cache_sync() enforces order, hence the mb().
59          */
60         mb();
61 }
62
63 #define dma_is_consistent(d, h) (1)     /* all we do is coherent memory... */
64
65 #endif /* _ASM_IA64_DMA_MAPPING_H */