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-rw-r--r--include/asm-x86/dma-mapping_32.h187
1 files changed, 0 insertions, 187 deletions
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
deleted file mode 100644
index 55f01bd9e556..000000000000
--- a/include/asm-x86/dma-mapping_32.h
+++ /dev/null
@@ -1,187 +0,0 @@
1#ifndef _ASM_I386_DMA_MAPPING_H
2#define _ASM_I386_DMA_MAPPING_H
3
4#include <linux/mm.h>
5#include <linux/scatterlist.h>
6
7#include <asm/cache.h>
8#include <asm/io.h>
9#include <asm/bug.h>
10
11#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
12#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
13
14void *dma_alloc_coherent(struct device *dev, size_t size,
15 dma_addr_t *dma_handle, gfp_t flag);
16
17void dma_free_coherent(struct device *dev, size_t size,
18 void *vaddr, dma_addr_t dma_handle);
19
20static inline dma_addr_t
21dma_map_single(struct device *dev, void *ptr, size_t size,
22 enum dma_data_direction direction)
23{
24 BUG_ON(!valid_dma_direction(direction));
25 WARN_ON(size == 0);
26 flush_write_buffers();
27 return virt_to_phys(ptr);
28}
29
30static inline void
31dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
32 enum dma_data_direction direction)
33{
34 BUG_ON(!valid_dma_direction(direction));
35}
36
37static inline int
38dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
39 enum dma_data_direction direction)
40{
41 struct scatterlist *sg;
42 int i;
43
44 BUG_ON(!valid_dma_direction(direction));
45 WARN_ON(nents == 0 || sglist[0].length == 0);
46
47 for_each_sg(sglist, sg, nents, i) {
48 BUG_ON(!sg_page(sg));
49
50 sg->dma_address = sg_phys(sg);
51 }
52
53 flush_write_buffers();
54 return nents;
55}
56
57static inline dma_addr_t
58dma_map_page(struct device *dev, struct page *page, unsigned long offset,
59 size_t size, enum dma_data_direction direction)
60{
61 BUG_ON(!valid_dma_direction(direction));
62 return page_to_phys(page) + offset;
63}
64
65static inline void
66dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
67 enum dma_data_direction direction)
68{
69 BUG_ON(!valid_dma_direction(direction));
70}
71
72
73static inline void
74dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
75 enum dma_data_direction direction)
76{
77 BUG_ON(!valid_dma_direction(direction));
78}
79
80static inline void
81dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
82 enum dma_data_direction direction)
83{
84}
85
86static inline void
87dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
88 enum dma_data_direction direction)
89{
90 flush_write_buffers();
91}
92
93static inline void
94dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
95 unsigned long offset, size_t size,
96 enum dma_data_direction direction)
97{
98}
99
100static inline void
101dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
102 unsigned long offset, size_t size,
103 enum dma_data_direction direction)
104{
105 flush_write_buffers();
106}
107
108static inline void
109dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
110 enum dma_data_direction direction)
111{
112}
113
114static inline void
115dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
116 enum dma_data_direction direction)
117{
118 flush_write_buffers();
119}
120
121static inline int
122dma_mapping_error(dma_addr_t dma_addr)
123{
124 return 0;
125}
126
127extern int forbid_dac;
128
129static inline int
130dma_supported(struct device *dev, u64 mask)
131{
132 /*
133 * we fall back to GFP_DMA when the mask isn't all 1s,
134 * so we can't guarantee allocations that must be
135 * within a tighter range than GFP_DMA..
136 */
137 if(mask < 0x00ffffff)
138 return 0;
139
140 /* Work around chipset bugs */
141 if (forbid_dac > 0 && mask > 0xffffffffULL)
142 return 0;
143
144 return 1;
145}
146
147static inline int
148dma_set_mask(struct device *dev, u64 mask)
149{
150 if(!dev->dma_mask || !dma_supported(dev, mask))
151 return -EIO;
152
153 *dev->dma_mask = mask;
154
155 return 0;
156}
157
158static inline int
159dma_get_cache_alignment(void)
160{
161 /* no easy way to get cache size on all x86, so return the
162 * maximum possible, to be safe */
163 return (1 << INTERNODE_CACHE_SHIFT);
164}
165
166#define dma_is_consistent(d, h) (1)
167
168static inline void
169dma_cache_sync(struct device *dev, void *vaddr, size_t size,
170 enum dma_data_direction direction)
171{
172 flush_write_buffers();
173}
174
175#define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
176extern int
177dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
178 dma_addr_t device_addr, size_t size, int flags);
179
180extern void
181dma_release_declared_memory(struct device *dev);
182
183extern void *
184dma_mark_declared_memory_occupied(struct device *dev,
185 dma_addr_t device_addr, size_t size);
186
187#endif
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