1 #ifndef _ASM_SPARC64_DMA_MAPPING_H
2 #define _ASM_SPARC64_DMA_MAPPING_H
7 /* we implement the API below in terms of the existing PCI one,
10 /* need struct page definitions */
13 #include <asm/of_device.h>
16 dma_supported(struct device *dev, u64 mask)
18 BUG_ON(dev->bus != &pci_bus_type);
20 return pci_dma_supported(to_pci_dev(dev), mask);
24 dma_set_mask(struct device *dev, u64 dma_mask)
26 BUG_ON(dev->bus != &pci_bus_type);
28 return pci_set_dma_mask(to_pci_dev(dev), dma_mask);
32 dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
35 BUG_ON(dev->bus != &pci_bus_type);
37 return pci_iommu_ops->alloc_consistent(to_pci_dev(dev), size, dma_handle, flag);
41 dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
42 dma_addr_t dma_handle)
44 BUG_ON(dev->bus != &pci_bus_type);
46 pci_free_consistent(to_pci_dev(dev), size, cpu_addr, dma_handle);
49 static inline dma_addr_t
50 dma_map_single(struct device *dev, void *cpu_addr, size_t size,
51 enum dma_data_direction direction)
53 BUG_ON(dev->bus != &pci_bus_type);
55 return pci_map_single(to_pci_dev(dev), cpu_addr, size, (int)direction);
59 dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
60 enum dma_data_direction direction)
62 BUG_ON(dev->bus != &pci_bus_type);
64 pci_unmap_single(to_pci_dev(dev), dma_addr, size, (int)direction);
67 static inline dma_addr_t
68 dma_map_page(struct device *dev, struct page *page,
69 unsigned long offset, size_t size,
70 enum dma_data_direction direction)
72 BUG_ON(dev->bus != &pci_bus_type);
74 return pci_map_page(to_pci_dev(dev), page, offset, size, (int)direction);
78 dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
79 enum dma_data_direction direction)
81 BUG_ON(dev->bus != &pci_bus_type);
83 pci_unmap_page(to_pci_dev(dev), dma_address, size, (int)direction);
87 dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
88 enum dma_data_direction direction)
90 BUG_ON(dev->bus != &pci_bus_type);
92 return pci_map_sg(to_pci_dev(dev), sg, nents, (int)direction);
96 dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
97 enum dma_data_direction direction)
99 BUG_ON(dev->bus != &pci_bus_type);
101 pci_unmap_sg(to_pci_dev(dev), sg, nhwentries, (int)direction);
105 dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
106 enum dma_data_direction direction)
108 BUG_ON(dev->bus != &pci_bus_type);
110 pci_dma_sync_single_for_cpu(to_pci_dev(dev), dma_handle,
111 size, (int)direction);
115 dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
116 enum dma_data_direction direction)
118 BUG_ON(dev->bus != &pci_bus_type);
120 pci_dma_sync_single_for_device(to_pci_dev(dev), dma_handle,
121 size, (int)direction);
125 dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
126 enum dma_data_direction direction)
128 BUG_ON(dev->bus != &pci_bus_type);
130 pci_dma_sync_sg_for_cpu(to_pci_dev(dev), sg, nelems, (int)direction);
134 dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
135 enum dma_data_direction direction)
137 BUG_ON(dev->bus != &pci_bus_type);
139 pci_dma_sync_sg_for_device(to_pci_dev(dev), sg, nelems, (int)direction);
143 dma_mapping_error(dma_addr_t dma_addr)
145 return pci_dma_mapping_error(dma_addr);
155 dma_supported(struct device *dev, u64 mask)
162 dma_set_mask(struct device *dev, u64 dma_mask)
168 static inline void *dma_alloc_coherent(struct device *dev, size_t size,
169 dma_addr_t *dma_handle, gfp_t flag)
175 static inline void dma_free_coherent(struct device *dev, size_t size,
176 void *vaddr, dma_addr_t dma_handle)
181 static inline dma_addr_t
182 dma_map_single(struct device *dev, void *cpu_addr, size_t size,
183 enum dma_data_direction direction)
190 dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
191 enum dma_data_direction direction)
196 static inline dma_addr_t
197 dma_map_page(struct device *dev, struct page *page,
198 unsigned long offset, size_t size,
199 enum dma_data_direction direction)
206 dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
207 enum dma_data_direction direction)
213 dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
214 enum dma_data_direction direction)
221 dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
222 enum dma_data_direction direction)
228 dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
229 enum dma_data_direction direction)
235 dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
236 enum dma_data_direction direction)
242 dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
243 enum dma_data_direction direction)
249 dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
250 enum dma_data_direction direction)
256 dma_mapping_error(dma_addr_t dma_addr)
265 /* Now for the API extensions over the pci_ one */
267 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
268 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
269 #define dma_is_consistent(d, h) (1)
272 dma_get_cache_alignment(void)
274 /* no easy way to get cache size on all processors, so return
275 * the maximum possible, to be safe */
276 return (1 << INTERNODE_CACHE_SHIFT);
280 dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
281 unsigned long offset, size_t size,
282 enum dma_data_direction direction)
284 /* just sync everything, that's all the pci API can do */
285 dma_sync_single_for_cpu(dev, dma_handle, offset+size, direction);
289 dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
290 unsigned long offset, size_t size,
291 enum dma_data_direction direction)
293 /* just sync everything, that's all the pci API can do */
294 dma_sync_single_for_device(dev, dma_handle, offset+size, direction);
298 dma_cache_sync(struct device *dev, void *vaddr, size_t size,
299 enum dma_data_direction direction)
301 /* could define this in terms of the dma_cache ... operations,
302 * but if you get this on a platform, you should convert the platform
303 * to using the generic device DMA API */
307 #endif /* _ASM_SPARC64_DMA_MAPPING_H */