Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __ASM_SH_DMA_MAPPING_H |
| 2 | #define __ASM_SH_DMA_MAPPING_H |
| 3 | |
Paul Mundt | 73c926b | 2009-10-20 12:55:56 +0900 | [diff] [blame] | 4 | extern struct dma_map_ops *dma_ops; |
| 5 | extern void no_iommu_init(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | |
Paul Mundt | 73c926b | 2009-10-20 12:55:56 +0900 | [diff] [blame] | 7 | static inline struct dma_map_ops *get_dma_ops(struct device *dev) |
| 8 | { |
| 9 | return dma_ops; |
| 10 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | |
Paul Mundt | f32154c9 | 2009-10-26 09:50:51 +0900 | [diff] [blame] | 12 | #include <asm-generic/dma-coherent.h> |
| 13 | #include <asm-generic/dma-mapping-common.h> |
| 14 | |
Paul Mundt | 73c926b | 2009-10-20 12:55:56 +0900 | [diff] [blame] | 15 | static inline int dma_supported(struct device *dev, u64 mask) |
| 16 | { |
| 17 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 18 | |
| 19 | if (ops->dma_supported) |
| 20 | return ops->dma_supported(dev, mask); |
| 21 | |
| 22 | return 1; |
| 23 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | |
| 25 | static inline int dma_set_mask(struct device *dev, u64 mask) |
| 26 | { |
Paul Mundt | 73c926b | 2009-10-20 12:55:56 +0900 | [diff] [blame] | 27 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 28 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | if (!dev->dma_mask || !dma_supported(dev, mask)) |
| 30 | return -EIO; |
Paul Mundt | 73c926b | 2009-10-20 12:55:56 +0900 | [diff] [blame] | 31 | if (ops->set_dma_mask) |
| 32 | return ops->set_dma_mask(dev, mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
| 34 | *dev->dma_mask = mask; |
| 35 | |
| 36 | return 0; |
| 37 | } |
| 38 | |
Magnus Damm | f93e97e | 2008-01-24 18:35:10 +0900 | [diff] [blame] | 39 | void dma_cache_sync(struct device *dev, void *vaddr, size_t size, |
| 40 | enum dma_data_direction dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Paul Mundt | c7666e7 | 2007-02-13 11:11:22 +0900 | [diff] [blame] | 42 | #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) |
| 43 | #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) |
Paul Mundt | 478fb15 | 2009-10-27 10:41:58 +0900 | [diff] [blame] | 44 | |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 45 | static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | { |
Paul Mundt | 73c926b | 2009-10-20 12:55:56 +0900 | [diff] [blame] | 47 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 48 | |
| 49 | if (ops->mapping_error) |
| 50 | return ops->mapping_error(dev, dma_addr); |
| 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | return dma_addr == 0; |
| 53 | } |
Magnus Damm | f93e97e | 2008-01-24 18:35:10 +0900 | [diff] [blame] | 54 | |
Andrzej Pietrasiewicz | 552c0d3 | 2011-12-14 12:11:13 +0100 | [diff] [blame] | 55 | #define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL) |
| 56 | |
| 57 | static inline void *dma_alloc_attrs(struct device *dev, size_t size, |
| 58 | dma_addr_t *dma_handle, gfp_t gfp, |
| 59 | struct dma_attrs *attrs) |
Paul Mundt | f32154c9 | 2009-10-26 09:50:51 +0900 | [diff] [blame] | 60 | { |
| 61 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 62 | void *memory; |
| 63 | |
| 64 | if (dma_alloc_from_coherent(dev, size, dma_handle, &memory)) |
| 65 | return memory; |
Andrzej Pietrasiewicz | 552c0d3 | 2011-12-14 12:11:13 +0100 | [diff] [blame] | 66 | if (!ops->alloc) |
Paul Mundt | f32154c9 | 2009-10-26 09:50:51 +0900 | [diff] [blame] | 67 | return NULL; |
| 68 | |
Andrzej Pietrasiewicz | 552c0d3 | 2011-12-14 12:11:13 +0100 | [diff] [blame] | 69 | memory = ops->alloc(dev, size, dma_handle, gfp, attrs); |
Paul Mundt | f32154c9 | 2009-10-26 09:50:51 +0900 | [diff] [blame] | 70 | debug_dma_alloc_coherent(dev, size, *dma_handle, memory); |
| 71 | |
| 72 | return memory; |
| 73 | } |
| 74 | |
Andrzej Pietrasiewicz | 552c0d3 | 2011-12-14 12:11:13 +0100 | [diff] [blame] | 75 | #define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL) |
| 76 | |
| 77 | static inline void dma_free_attrs(struct device *dev, size_t size, |
| 78 | void *vaddr, dma_addr_t dma_handle, |
| 79 | struct dma_attrs *attrs) |
Paul Mundt | f32154c9 | 2009-10-26 09:50:51 +0900 | [diff] [blame] | 80 | { |
| 81 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 82 | |
Paul Mundt | f32154c9 | 2009-10-26 09:50:51 +0900 | [diff] [blame] | 83 | if (dma_release_from_coherent(dev, get_order(size), vaddr)) |
| 84 | return; |
| 85 | |
| 86 | debug_dma_free_coherent(dev, size, vaddr, dma_handle); |
Andrzej Pietrasiewicz | 552c0d3 | 2011-12-14 12:11:13 +0100 | [diff] [blame] | 87 | if (ops->free) |
| 88 | ops->free(dev, size, vaddr, dma_handle, attrs); |
Paul Mundt | f32154c9 | 2009-10-26 09:50:51 +0900 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | /* arch/sh/mm/consistent.c */ |
| 92 | extern void *dma_generic_alloc_coherent(struct device *dev, size_t size, |
Andrzej Pietrasiewicz | 552c0d3 | 2011-12-14 12:11:13 +0100 | [diff] [blame] | 93 | dma_addr_t *dma_addr, gfp_t flag, |
| 94 | struct dma_attrs *attrs); |
Paul Mundt | f32154c9 | 2009-10-26 09:50:51 +0900 | [diff] [blame] | 95 | extern void dma_generic_free_coherent(struct device *dev, size_t size, |
Andrzej Pietrasiewicz | 552c0d3 | 2011-12-14 12:11:13 +0100 | [diff] [blame] | 96 | void *vaddr, dma_addr_t dma_handle, |
| 97 | struct dma_attrs *attrs); |
Magnus Damm | f93e97e | 2008-01-24 18:35:10 +0900 | [diff] [blame] | 98 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | #endif /* __ASM_SH_DMA_MAPPING_H */ |