blob: e694263445f7b5dd48ff294cdd6ec4b76f3769a2 [file] [log] [blame]
FUJITA Tomonoric147d8e2009-06-17 16:28:10 -07001#ifndef _ASM_GENERIC_DMA_MAPPING_H
2#define _ASM_GENERIC_DMA_MAPPING_H
3
4#include <linux/kmemcheck.h>
5#include <linux/scatterlist.h>
6#include <linux/dma-debug.h>
7#include <linux/dma-attrs.h>
8
9static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr,
10 size_t size,
11 enum dma_data_direction dir,
12 struct dma_attrs *attrs)
13{
14 struct dma_map_ops *ops = get_dma_ops(dev);
15 dma_addr_t addr;
16
17 kmemcheck_mark_initialized(ptr, size);
18 BUG_ON(!valid_dma_direction(dir));
19 addr = ops->map_page(dev, virt_to_page(ptr),
20 (unsigned long)ptr & ~PAGE_MASK, size,
21 dir, attrs);
22 debug_dma_map_page(dev, virt_to_page(ptr),
23 (unsigned long)ptr & ~PAGE_MASK, size,
24 dir, addr, true);
25 return addr;
26}
27
28static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr,
29 size_t size,
30 enum dma_data_direction dir,
31 struct dma_attrs *attrs)
32{
33 struct dma_map_ops *ops = get_dma_ops(dev);
34
35 BUG_ON(!valid_dma_direction(dir));
36 if (ops->unmap_page)
37 ops->unmap_page(dev, addr, size, dir, attrs);
38 debug_dma_unmap_page(dev, addr, size, dir, true);
39}
40
41static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg,
42 int nents, enum dma_data_direction dir,
43 struct dma_attrs *attrs)
44{
45 struct dma_map_ops *ops = get_dma_ops(dev);
46 int i, ents;
47 struct scatterlist *s;
48
49 for_each_sg(sg, s, nents, i)
50 kmemcheck_mark_initialized(sg_virt(s), s->length);
51 BUG_ON(!valid_dma_direction(dir));
52 ents = ops->map_sg(dev, sg, nents, dir, attrs);
53 debug_dma_map_sg(dev, sg, nents, ents, dir);
54
55 return ents;
56}
57
58static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,
59 int nents, enum dma_data_direction dir,
60 struct dma_attrs *attrs)
61{
62 struct dma_map_ops *ops = get_dma_ops(dev);
63
64 BUG_ON(!valid_dma_direction(dir));
65 debug_dma_unmap_sg(dev, sg, nents, dir);
66 if (ops->unmap_sg)
67 ops->unmap_sg(dev, sg, nents, dir, attrs);
68}
69
70static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
71 size_t offset, size_t size,
72 enum dma_data_direction dir)
73{
74 struct dma_map_ops *ops = get_dma_ops(dev);
75 dma_addr_t addr;
76
77 kmemcheck_mark_initialized(page_address(page) + offset, size);
78 BUG_ON(!valid_dma_direction(dir));
79 addr = ops->map_page(dev, page, offset, size, dir, NULL);
80 debug_dma_map_page(dev, page, offset, size, dir, addr, false);
81
82 return addr;
83}
84
85static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
86 size_t size, enum dma_data_direction dir)
87{
88 struct dma_map_ops *ops = get_dma_ops(dev);
89
90 BUG_ON(!valid_dma_direction(dir));
91 if (ops->unmap_page)
92 ops->unmap_page(dev, addr, size, dir, NULL);
93 debug_dma_unmap_page(dev, addr, size, dir, false);
94}
95
96static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
97 size_t size,
98 enum dma_data_direction dir)
99{
100 struct dma_map_ops *ops = get_dma_ops(dev);
101
102 BUG_ON(!valid_dma_direction(dir));
103 if (ops->sync_single_for_cpu)
104 ops->sync_single_for_cpu(dev, addr, size, dir);
105 debug_dma_sync_single_for_cpu(dev, addr, size, dir);
FUJITA Tomonoric147d8e2009-06-17 16:28:10 -0700106}
107
108static inline void dma_sync_single_for_device(struct device *dev,
109 dma_addr_t addr, size_t size,
110 enum dma_data_direction dir)
111{
112 struct dma_map_ops *ops = get_dma_ops(dev);
113
114 BUG_ON(!valid_dma_direction(dir));
115 if (ops->sync_single_for_device)
116 ops->sync_single_for_device(dev, addr, size, dir);
117 debug_dma_sync_single_for_device(dev, addr, size, dir);
FUJITA Tomonoric147d8e2009-06-17 16:28:10 -0700118}
119
120static inline void dma_sync_single_range_for_cpu(struct device *dev,
121 dma_addr_t addr,
122 unsigned long offset,
123 size_t size,
124 enum dma_data_direction dir)
125{
126 struct dma_map_ops *ops = get_dma_ops(dev);
127
128 BUG_ON(!valid_dma_direction(dir));
129 if (ops->sync_single_range_for_cpu) {
130 ops->sync_single_range_for_cpu(dev, addr, offset, size, dir);
131 debug_dma_sync_single_range_for_cpu(dev, addr, offset, size, dir);
132
FUJITA Tomonoric147d8e2009-06-17 16:28:10 -0700133 } else
134 dma_sync_single_for_cpu(dev, addr, size, dir);
135}
136
137static inline void dma_sync_single_range_for_device(struct device *dev,
138 dma_addr_t addr,
139 unsigned long offset,
140 size_t size,
141 enum dma_data_direction dir)
142{
143 struct dma_map_ops *ops = get_dma_ops(dev);
144
145 BUG_ON(!valid_dma_direction(dir));
146 if (ops->sync_single_range_for_device) {
147 ops->sync_single_range_for_device(dev, addr, offset, size, dir);
148 debug_dma_sync_single_range_for_device(dev, addr, offset, size, dir);
149
FUJITA Tomonoric147d8e2009-06-17 16:28:10 -0700150 } else
151 dma_sync_single_for_device(dev, addr, size, dir);
152}
153
154static inline void
155dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
156 int nelems, enum dma_data_direction dir)
157{
158 struct dma_map_ops *ops = get_dma_ops(dev);
159
160 BUG_ON(!valid_dma_direction(dir));
161 if (ops->sync_sg_for_cpu)
162 ops->sync_sg_for_cpu(dev, sg, nelems, dir);
163 debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir);
FUJITA Tomonoric147d8e2009-06-17 16:28:10 -0700164}
165
166static inline void
167dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
168 int nelems, enum dma_data_direction dir)
169{
170 struct dma_map_ops *ops = get_dma_ops(dev);
171
172 BUG_ON(!valid_dma_direction(dir));
173 if (ops->sync_sg_for_device)
174 ops->sync_sg_for_device(dev, sg, nelems, dir);
175 debug_dma_sync_sg_for_device(dev, sg, nelems, dir);
176
FUJITA Tomonoric147d8e2009-06-17 16:28:10 -0700177}
178
179#define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL)
180#define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, NULL)
181#define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL)
182#define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL)
183
184#endif