FUJITA Tomonori | c147d8e | 2009-06-17 16:28:10 -0700 | [diff] [blame] | 1 | #ifndef _ASM_GENERIC_DMA_MAPPING_H |
| 2 | #define _ASM_GENERIC_DMA_MAPPING_H |
| 3 | |
| 4 | #include <linux/kmemcheck.h> |
Paul Gortmaker | 187f188 | 2011-11-23 20:12:59 -0500 | [diff] [blame] | 5 | #include <linux/bug.h> |
FUJITA Tomonori | c147d8e | 2009-06-17 16:28:10 -0700 | [diff] [blame] | 6 | #include <linux/scatterlist.h> |
| 7 | #include <linux/dma-debug.h> |
| 8 | #include <linux/dma-attrs.h> |
| 9 | |
| 10 | static inline dma_addr_t dma_map_single_attrs(struct device *dev, void *ptr, |
| 11 | size_t size, |
| 12 | enum dma_data_direction dir, |
| 13 | struct dma_attrs *attrs) |
| 14 | { |
| 15 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 16 | dma_addr_t addr; |
| 17 | |
| 18 | kmemcheck_mark_initialized(ptr, size); |
| 19 | BUG_ON(!valid_dma_direction(dir)); |
| 20 | addr = ops->map_page(dev, virt_to_page(ptr), |
| 21 | (unsigned long)ptr & ~PAGE_MASK, size, |
| 22 | dir, attrs); |
| 23 | debug_dma_map_page(dev, virt_to_page(ptr), |
| 24 | (unsigned long)ptr & ~PAGE_MASK, size, |
| 25 | dir, addr, true); |
| 26 | return addr; |
| 27 | } |
| 28 | |
| 29 | static inline void dma_unmap_single_attrs(struct device *dev, dma_addr_t addr, |
| 30 | size_t size, |
| 31 | enum dma_data_direction dir, |
| 32 | struct dma_attrs *attrs) |
| 33 | { |
| 34 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 35 | |
| 36 | BUG_ON(!valid_dma_direction(dir)); |
| 37 | if (ops->unmap_page) |
| 38 | ops->unmap_page(dev, addr, size, dir, attrs); |
| 39 | debug_dma_unmap_page(dev, addr, size, dir, true); |
| 40 | } |
| 41 | |
| 42 | static inline int dma_map_sg_attrs(struct device *dev, struct scatterlist *sg, |
| 43 | int nents, enum dma_data_direction dir, |
| 44 | struct dma_attrs *attrs) |
| 45 | { |
| 46 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 47 | int i, ents; |
| 48 | struct scatterlist *s; |
| 49 | |
| 50 | for_each_sg(sg, s, nents, i) |
| 51 | kmemcheck_mark_initialized(sg_virt(s), s->length); |
| 52 | BUG_ON(!valid_dma_direction(dir)); |
| 53 | ents = ops->map_sg(dev, sg, nents, dir, attrs); |
| 54 | debug_dma_map_sg(dev, sg, nents, ents, dir); |
| 55 | |
| 56 | return ents; |
| 57 | } |
| 58 | |
| 59 | static inline void dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg, |
| 60 | int nents, enum dma_data_direction dir, |
| 61 | struct dma_attrs *attrs) |
| 62 | { |
| 63 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 64 | |
| 65 | BUG_ON(!valid_dma_direction(dir)); |
| 66 | debug_dma_unmap_sg(dev, sg, nents, dir); |
| 67 | if (ops->unmap_sg) |
| 68 | ops->unmap_sg(dev, sg, nents, dir, attrs); |
| 69 | } |
| 70 | |
| 71 | static inline dma_addr_t dma_map_page(struct device *dev, struct page *page, |
| 72 | size_t offset, size_t size, |
| 73 | enum dma_data_direction dir) |
| 74 | { |
| 75 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 76 | dma_addr_t addr; |
| 77 | |
| 78 | kmemcheck_mark_initialized(page_address(page) + offset, size); |
| 79 | BUG_ON(!valid_dma_direction(dir)); |
| 80 | addr = ops->map_page(dev, page, offset, size, dir, NULL); |
| 81 | debug_dma_map_page(dev, page, offset, size, dir, addr, false); |
| 82 | |
| 83 | return addr; |
| 84 | } |
| 85 | |
| 86 | static inline void dma_unmap_page(struct device *dev, dma_addr_t addr, |
| 87 | size_t size, enum dma_data_direction dir) |
| 88 | { |
| 89 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 90 | |
| 91 | BUG_ON(!valid_dma_direction(dir)); |
| 92 | if (ops->unmap_page) |
| 93 | ops->unmap_page(dev, addr, size, dir, NULL); |
| 94 | debug_dma_unmap_page(dev, addr, size, dir, false); |
| 95 | } |
| 96 | |
| 97 | static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr, |
| 98 | size_t size, |
| 99 | enum dma_data_direction dir) |
| 100 | { |
| 101 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 102 | |
| 103 | BUG_ON(!valid_dma_direction(dir)); |
| 104 | if (ops->sync_single_for_cpu) |
| 105 | ops->sync_single_for_cpu(dev, addr, size, dir); |
| 106 | debug_dma_sync_single_for_cpu(dev, addr, size, dir); |
FUJITA Tomonori | c147d8e | 2009-06-17 16:28:10 -0700 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | static inline void dma_sync_single_for_device(struct device *dev, |
| 110 | dma_addr_t addr, size_t size, |
| 111 | enum dma_data_direction dir) |
| 112 | { |
| 113 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 114 | |
| 115 | BUG_ON(!valid_dma_direction(dir)); |
| 116 | if (ops->sync_single_for_device) |
| 117 | ops->sync_single_for_device(dev, addr, size, dir); |
| 118 | debug_dma_sync_single_for_device(dev, addr, size, dir); |
FUJITA Tomonori | c147d8e | 2009-06-17 16:28:10 -0700 | [diff] [blame] | 119 | } |
| 120 | |
| 121 | static inline void dma_sync_single_range_for_cpu(struct device *dev, |
| 122 | dma_addr_t addr, |
| 123 | unsigned long offset, |
| 124 | size_t size, |
| 125 | enum dma_data_direction dir) |
| 126 | { |
Clemens Ladisch | 07a7230 | 2011-10-31 17:06:28 -0700 | [diff] [blame] | 127 | const struct dma_map_ops *ops = get_dma_ops(dev); |
| 128 | |
| 129 | BUG_ON(!valid_dma_direction(dir)); |
| 130 | if (ops->sync_single_for_cpu) |
| 131 | ops->sync_single_for_cpu(dev, addr + offset, size, dir); |
| 132 | debug_dma_sync_single_range_for_cpu(dev, addr, offset, size, dir); |
FUJITA Tomonori | c147d8e | 2009-06-17 16:28:10 -0700 | [diff] [blame] | 133 | } |
| 134 | |
| 135 | static inline void dma_sync_single_range_for_device(struct device *dev, |
| 136 | dma_addr_t addr, |
| 137 | unsigned long offset, |
| 138 | size_t size, |
| 139 | enum dma_data_direction dir) |
| 140 | { |
Clemens Ladisch | 07a7230 | 2011-10-31 17:06:28 -0700 | [diff] [blame] | 141 | const struct dma_map_ops *ops = get_dma_ops(dev); |
| 142 | |
| 143 | BUG_ON(!valid_dma_direction(dir)); |
| 144 | if (ops->sync_single_for_device) |
| 145 | ops->sync_single_for_device(dev, addr + offset, size, dir); |
| 146 | debug_dma_sync_single_range_for_device(dev, addr, offset, size, dir); |
FUJITA Tomonori | c147d8e | 2009-06-17 16:28:10 -0700 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | static inline void |
| 150 | dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, |
| 151 | int nelems, enum dma_data_direction dir) |
| 152 | { |
| 153 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 154 | |
| 155 | BUG_ON(!valid_dma_direction(dir)); |
| 156 | if (ops->sync_sg_for_cpu) |
| 157 | ops->sync_sg_for_cpu(dev, sg, nelems, dir); |
| 158 | debug_dma_sync_sg_for_cpu(dev, sg, nelems, dir); |
FUJITA Tomonori | c147d8e | 2009-06-17 16:28:10 -0700 | [diff] [blame] | 159 | } |
| 160 | |
| 161 | static inline void |
| 162 | dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, |
| 163 | int nelems, enum dma_data_direction dir) |
| 164 | { |
| 165 | struct dma_map_ops *ops = get_dma_ops(dev); |
| 166 | |
| 167 | BUG_ON(!valid_dma_direction(dir)); |
| 168 | if (ops->sync_sg_for_device) |
| 169 | ops->sync_sg_for_device(dev, sg, nelems, dir); |
| 170 | debug_dma_sync_sg_for_device(dev, sg, nelems, dir); |
| 171 | |
FUJITA Tomonori | c147d8e | 2009-06-17 16:28:10 -0700 | [diff] [blame] | 172 | } |
| 173 | |
| 174 | #define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, NULL) |
| 175 | #define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, NULL) |
| 176 | #define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL) |
| 177 | #define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL) |
| 178 | |
| 179 | #endif |