projects / mirror_ubuntu-eoan-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _ASM_DMA_MAPPING_H |
| 2 | #define _ASM_DMA_MAPPING_H | |
| 3 | ||
| 84be456f | 4 | #include <linux/scatterlist.h> |
| b6d92b4a | 5 | #include <asm/dma-coherence.h> |
| 1da177e4 LT |
6 | #include <asm/cache.h> |
| 7 | ||
| 70342287 | 8 | #ifndef CONFIG_SGI_IP27 /* Kludge to fix 2.6.39 build for IP27 */ |
| 48e1fd5a | 9 | #include <dma-coherence.h> |
| a5602a32 | 10 | #endif |
| 1da177e4 | 11 | |
| 48e1fd5a | 12 | extern struct dma_map_ops *mips_dma_map_ops; |
| 1da177e4 | 13 | |
| 48e1fd5a DD |
14 | static inline struct dma_map_ops *get_dma_ops(struct device *dev) |
| 15 | { | |
| 16 | if (dev && dev->archdata.dma_ops) | |
| 17 | return dev->archdata.dma_ops; | |
| 18 | else | |
| 19 | return mips_dma_map_ops; | |
| 20 | } | |
| 1da177e4 | 21 | |
| 48e1fd5a DD |
22 | static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) |
| 23 | { | |
| 24 | if (!dev->dma_mask) | |
| 3db27425 | 25 | return false; |
| 1da177e4 | 26 | |
| 48e1fd5a DD |
27 | return addr + size <= *dev->dma_mask; |
| 28 | } | |
| 29 | ||
| 30 | static inline void dma_mark_clean(void *addr, size_t size) {} | |
| 31 | ||
| 32 | #include <asm-generic/dma-mapping-common.h> | |
| 33 | ||
| 1da177e4 LT |
34 | static inline int |
| 35 | dma_set_mask(struct device *dev, u64 mask) | |
| 36 | { | |
| 1299b0e0 HC |
37 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 38 | ||
| 1da177e4 LT |
39 | if(!dev->dma_mask || !dma_supported(dev, mask)) |
| 40 | return -EIO; | |
| 41 | ||
| 1299b0e0 HC |
42 | if (ops->set_dma_mask) |
| 43 | return ops->set_dma_mask(dev, mask); | |
| 44 | ||
| 1da177e4 LT |
45 | *dev->dma_mask = mask; |
| 46 | ||
| 47 | return 0; | |
| 48 | } | |
| 49 | ||
| d3fa72e4 | 50 | extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size, |
| 1da177e4 LT |
51 | enum dma_data_direction direction); |
| 52 | ||
| 1da177e4 | 53 | #endif /* _ASM_DMA_MAPPING_H */ |