projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 22456b97 GC |
1 | #include <linux/mm.h> |
| 2 | #include <linux/kernel.h> | |
| 3 | #include <linux/module.h> | |
| 4 | #include <linux/dma-mapping.h> | |
| 5 | #include <asm/dma-mapping.h> | |
| 6 | ||
| 2be62149 | 7 | static dma_addr_t pci32_map_single(struct device *dev, phys_addr_t ptr, |
| 22456b97 GC |
8 | size_t size, int direction) |
| 9 | { | |
| 10 | WARN_ON(size == 0); | |
| 11 | flush_write_buffers(); | |
| 2be62149 | 12 | return ptr; |
| 22456b97 GC |
13 | } |
| 14 | ||
| 16a3ce9b GC |
15 | static int pci32_dma_map_sg(struct device *dev, struct scatterlist *sglist, |
| 16 | int nents, int direction) | |
| 17 | { | |
| 18 | struct scatterlist *sg; | |
| 19 | int i; | |
| 20 | ||
| 21 | WARN_ON(nents == 0 || sglist[0].length == 0); | |
| 22 | ||
| 23 | for_each_sg(sglist, sg, nents, i) { | |
| 24 | BUG_ON(!sg_page(sg)); | |
| 25 | ||
| 26 | sg->dma_address = sg_phys(sg); | |
| 27 | } | |
| 28 | ||
| 29 | flush_write_buffers(); | |
| 30 | return nents; | |
| 31 | } | |
| 32 | ||
| 22456b97 GC |
33 | static const struct dma_mapping_ops pci32_dma_ops = { |
| 34 | .map_single = pci32_map_single, | |
| 0cb0ae68 | 35 | .unmap_single = NULL, |
| 16a3ce9b | 36 | .map_sg = pci32_dma_map_sg, |
| 72c784f8 | 37 | .unmap_sg = NULL, |
| c01dd8cf | 38 | .sync_single_for_cpu = NULL, |
| 9231b269 | 39 | .sync_single_for_device = NULL, |
| 627610fc | 40 | .sync_single_range_for_cpu = NULL, |
| 71362332 | 41 | .sync_single_range_for_device = NULL, |
| ed435dee | 42 | .sync_sg_for_cpu = NULL, |
| e7f3a913 | 43 | .sync_sg_for_device = NULL, |
| 22456b97 GC |
44 | }; |
| 45 | ||
| 46 | const struct dma_mapping_ops *dma_ops = &pci32_dma_ops; | |
| 47 | EXPORT_SYMBOL(dma_ops); |