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1da177e4 LT |
1 | #ifndef _ASM_SPARC64_DMA_MAPPING_H |
2 | #define _ASM_SPARC64_DMA_MAPPING_H | |
3 | ||
1da177e4 LT |
4 | |
5 | #ifdef CONFIG_PCI | |
42f14237 DM |
6 | |
7 | /* we implement the API below in terms of the existing PCI one, | |
8 | * so include it */ | |
9 | #include <linux/pci.h> | |
10 | /* need struct page definitions */ | |
11 | #include <linux/mm.h> | |
12 | ||
13 | static inline int | |
14 | dma_supported(struct device *dev, u64 mask) | |
15 | { | |
16 | BUG_ON(dev->bus != &pci_bus_type); | |
17 | ||
18 | return pci_dma_supported(to_pci_dev(dev), mask); | |
19 | } | |
20 | ||
21 | static inline int | |
22 | dma_set_mask(struct device *dev, u64 dma_mask) | |
23 | { | |
24 | BUG_ON(dev->bus != &pci_bus_type); | |
25 | ||
26 | return pci_set_dma_mask(to_pci_dev(dev), dma_mask); | |
27 | } | |
28 | ||
29 | static inline void * | |
30 | dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, | |
31 | gfp_t flag) | |
32 | { | |
33 | BUG_ON(dev->bus != &pci_bus_type); | |
34 | ||
35 | return pci_iommu_ops->alloc_consistent(to_pci_dev(dev), size, dma_handle, flag); | |
36 | } | |
37 | ||
38 | static inline void | |
39 | dma_free_coherent(struct device *dev, size_t size, void *cpu_addr, | |
40 | dma_addr_t dma_handle) | |
41 | { | |
42 | BUG_ON(dev->bus != &pci_bus_type); | |
43 | ||
44 | pci_free_consistent(to_pci_dev(dev), size, cpu_addr, dma_handle); | |
45 | } | |
46 | ||
47 | static inline dma_addr_t | |
48 | dma_map_single(struct device *dev, void *cpu_addr, size_t size, | |
49 | enum dma_data_direction direction) | |
50 | { | |
51 | BUG_ON(dev->bus != &pci_bus_type); | |
52 | ||
53 | return pci_map_single(to_pci_dev(dev), cpu_addr, size, (int)direction); | |
54 | } | |
55 | ||
56 | static inline void | |
57 | dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, | |
58 | enum dma_data_direction direction) | |
59 | { | |
60 | BUG_ON(dev->bus != &pci_bus_type); | |
61 | ||
62 | pci_unmap_single(to_pci_dev(dev), dma_addr, size, (int)direction); | |
63 | } | |
64 | ||
65 | static inline dma_addr_t | |
66 | dma_map_page(struct device *dev, struct page *page, | |
67 | unsigned long offset, size_t size, | |
68 | enum dma_data_direction direction) | |
69 | { | |
70 | BUG_ON(dev->bus != &pci_bus_type); | |
71 | ||
72 | return pci_map_page(to_pci_dev(dev), page, offset, size, (int)direction); | |
73 | } | |
74 | ||
75 | static inline void | |
76 | dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, | |
77 | enum dma_data_direction direction) | |
78 | { | |
79 | BUG_ON(dev->bus != &pci_bus_type); | |
80 | ||
81 | pci_unmap_page(to_pci_dev(dev), dma_address, size, (int)direction); | |
82 | } | |
83 | ||
84 | static inline int | |
85 | dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, | |
86 | enum dma_data_direction direction) | |
87 | { | |
88 | BUG_ON(dev->bus != &pci_bus_type); | |
89 | ||
90 | return pci_map_sg(to_pci_dev(dev), sg, nents, (int)direction); | |
91 | } | |
92 | ||
93 | static inline void | |
94 | dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, | |
95 | enum dma_data_direction direction) | |
96 | { | |
97 | BUG_ON(dev->bus != &pci_bus_type); | |
98 | ||
99 | pci_unmap_sg(to_pci_dev(dev), sg, nhwentries, (int)direction); | |
100 | } | |
101 | ||
102 | static inline void | |
103 | dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, | |
104 | enum dma_data_direction direction) | |
105 | { | |
106 | BUG_ON(dev->bus != &pci_bus_type); | |
107 | ||
108 | pci_dma_sync_single_for_cpu(to_pci_dev(dev), dma_handle, | |
109 | size, (int)direction); | |
110 | } | |
111 | ||
112 | static inline void | |
113 | dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, | |
114 | enum dma_data_direction direction) | |
115 | { | |
116 | BUG_ON(dev->bus != &pci_bus_type); | |
117 | ||
118 | pci_dma_sync_single_for_device(to_pci_dev(dev), dma_handle, | |
119 | size, (int)direction); | |
120 | } | |
121 | ||
122 | static inline void | |
123 | dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, | |
124 | enum dma_data_direction direction) | |
125 | { | |
126 | BUG_ON(dev->bus != &pci_bus_type); | |
127 | ||
128 | pci_dma_sync_sg_for_cpu(to_pci_dev(dev), sg, nelems, (int)direction); | |
129 | } | |
130 | ||
131 | static inline void | |
132 | dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, | |
133 | enum dma_data_direction direction) | |
134 | { | |
135 | BUG_ON(dev->bus != &pci_bus_type); | |
136 | ||
137 | pci_dma_sync_sg_for_device(to_pci_dev(dev), sg, nelems, (int)direction); | |
138 | } | |
139 | ||
140 | static inline int | |
141 | dma_mapping_error(dma_addr_t dma_addr) | |
142 | { | |
143 | return pci_dma_mapping_error(dma_addr); | |
144 | } | |
145 | ||
1da177e4 LT |
146 | #else |
147 | ||
148 | struct device; | |
149 | ||
150 | static inline void *dma_alloc_coherent(struct device *dev, size_t size, | |
970a9e73 | 151 | dma_addr_t *dma_handle, gfp_t flag) |
1da177e4 LT |
152 | { |
153 | BUG(); | |
154 | return NULL; | |
155 | } | |
156 | ||
157 | static inline void dma_free_coherent(struct device *dev, size_t size, | |
158 | void *vaddr, dma_addr_t dma_handle) | |
159 | { | |
160 | BUG(); | |
161 | } | |
162 | ||
7233589d RD |
163 | static inline void |
164 | dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, | |
165 | enum dma_data_direction direction) | |
166 | { | |
167 | BUG(); | |
168 | } | |
169 | ||
170 | static inline void | |
171 | dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, | |
172 | enum dma_data_direction direction) | |
173 | { | |
174 | BUG(); | |
175 | } | |
176 | ||
1da177e4 LT |
177 | #endif /* PCI */ |
178 | ||
36321426 DM |
179 | |
180 | /* Now for the API extensions over the pci_ one */ | |
181 | ||
182 | #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) | |
183 | #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) | |
f67637ee | 184 | #define dma_is_consistent(d, h) (1) |
36321426 DM |
185 | |
186 | static inline int | |
187 | dma_get_cache_alignment(void) | |
188 | { | |
189 | /* no easy way to get cache size on all processors, so return | |
190 | * the maximum possible, to be safe */ | |
191 | return (1 << INTERNODE_CACHE_SHIFT); | |
192 | } | |
193 | ||
194 | static inline void | |
195 | dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle, | |
196 | unsigned long offset, size_t size, | |
197 | enum dma_data_direction direction) | |
198 | { | |
199 | /* just sync everything, that's all the pci API can do */ | |
200 | dma_sync_single_for_cpu(dev, dma_handle, offset+size, direction); | |
201 | } | |
202 | ||
203 | static inline void | |
204 | dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, | |
205 | unsigned long offset, size_t size, | |
206 | enum dma_data_direction direction) | |
207 | { | |
208 | /* just sync everything, that's all the pci API can do */ | |
209 | dma_sync_single_for_device(dev, dma_handle, offset+size, direction); | |
210 | } | |
211 | ||
212 | static inline void | |
d3fa72e4 | 213 | dma_cache_sync(struct device *dev, void *vaddr, size_t size, |
36321426 DM |
214 | enum dma_data_direction direction) |
215 | { | |
216 | /* could define this in terms of the dma_cache ... operations, | |
217 | * but if you get this on a platform, you should convert the platform | |
218 | * to using the generic device DMA API */ | |
219 | BUG(); | |
220 | } | |
221 | ||
1da177e4 | 222 | #endif /* _ASM_SPARC64_DMA_MAPPING_H */ |