Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff
[linux-2.6.git] / include / asm-ia64 / dma-mapping.h
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 <linux/config.h>
9 #include <asm/machvec.h>
10
11 #define dma_alloc_coherent      platform_dma_alloc_coherent
12 #define dma_alloc_noncoherent   platform_dma_alloc_coherent     /* coherent mem. is cheap */
13 #define dma_free_coherent       platform_dma_free_coherent
14 #define dma_free_noncoherent    platform_dma_free_coherent
15 #define dma_map_single          platform_dma_map_single
16 #define dma_map_sg              platform_dma_map_sg
17 #define dma_unmap_single        platform_dma_unmap_single
18 #define dma_unmap_sg            platform_dma_unmap_sg
19 #define dma_sync_single_for_cpu platform_dma_sync_single_for_cpu
20 #define dma_sync_sg_for_cpu     platform_dma_sync_sg_for_cpu
21 #define dma_sync_single_for_device platform_dma_sync_single_for_device
22 #define dma_sync_sg_for_device  platform_dma_sync_sg_for_device
23 #define dma_mapping_error       platform_dma_mapping_error
24
25 #define dma_map_page(dev, pg, off, size, dir)                           \
26         dma_map_single(dev, page_address(pg) + (off), (size), (dir))
27 #define dma_unmap_page(dev, dma_addr, size, dir)                        \
28         dma_unmap_single(dev, dma_addr, size, dir)
29
30 /*
31  * Rest of this file is part of the "Advanced DMA API".  Use at your own risk.
32  * See Documentation/DMA-API.txt for details.
33  */
34
35 #define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir)       \
36         dma_sync_single_for_cpu(dev, dma_handle, size, dir)
37 #define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir)    \
38         dma_sync_single_for_device(dev, dma_handle, size, dir)
39
40 #define dma_supported           platform_dma_supported
41
42 static inline int
43 dma_set_mask (struct device *dev, u64 mask)
44 {
45         if (!dev->dma_mask || !dma_supported(dev, mask))
46                 return -EIO;
47         *dev->dma_mask = mask;
48         return 0;
49 }
50
51 extern int dma_get_cache_alignment(void);
52
53 static inline void
54 dma_cache_sync (void *vaddr, size_t size, 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(dma_handle)   (1)     /* all we do is coherent memory... */
64
65 #endif /* _ASM_IA64_DMA_MAPPING_H */