Vegard Nossum | 77ef50a | 2008-06-18 17:08:48 +0200 | [diff] [blame] | 1 | #ifndef ASM_X86__DMA_MAPPING_H |
| 2 | #define ASM_X86__DMA_MAPPING_H |
Glauber Costa | 6f53663 | 2008-03-25 18:36:20 -0300 | [diff] [blame] | 3 | |
| 4 | /* |
| 5 | * IOMMU interface. See Documentation/DMA-mapping.txt and DMA-API.txt for |
| 6 | * documentation. |
| 7 | */ |
| 8 | |
| 9 | #include <linux/scatterlist.h> |
| 10 | #include <asm/io.h> |
| 11 | #include <asm/swiotlb.h> |
Joerg Roedel | 6c505ce | 2008-08-19 16:32:45 +0200 | [diff] [blame] | 12 | #include <asm-generic/dma-coherent.h> |
Glauber Costa | 6f53663 | 2008-03-25 18:36:20 -0300 | [diff] [blame] | 13 | |
Glauber Costa | 7c18341 | 2008-03-25 18:36:36 -0300 | [diff] [blame] | 14 | extern dma_addr_t bad_dma_address; |
Glauber Costa | b7107a3 | 2008-03-25 18:36:39 -0300 | [diff] [blame] | 15 | extern int iommu_merge; |
Joerg Roedel | 6c505ce | 2008-08-19 16:32:45 +0200 | [diff] [blame] | 16 | extern struct device x86_dma_fallback_dev; |
Glauber Costa | b7107a3 | 2008-03-25 18:36:39 -0300 | [diff] [blame] | 17 | extern int panic_on_overflow; |
Glauber Costa | 7c18341 | 2008-03-25 18:36:36 -0300 | [diff] [blame] | 18 | |
Glauber Costa | 6f53663 | 2008-03-25 18:36:20 -0300 | [diff] [blame] | 19 | struct dma_mapping_ops { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 20 | int (*mapping_error)(struct device *dev, |
| 21 | dma_addr_t dma_addr); |
Glauber Costa | 6f53663 | 2008-03-25 18:36:20 -0300 | [diff] [blame] | 22 | void* (*alloc_coherent)(struct device *dev, size_t size, |
| 23 | dma_addr_t *dma_handle, gfp_t gfp); |
| 24 | void (*free_coherent)(struct device *dev, size_t size, |
| 25 | void *vaddr, dma_addr_t dma_handle); |
Ingo Molnar | 2be6214 | 2008-04-19 19:19:56 +0200 | [diff] [blame] | 26 | dma_addr_t (*map_single)(struct device *hwdev, phys_addr_t ptr, |
Glauber Costa | 6f53663 | 2008-03-25 18:36:20 -0300 | [diff] [blame] | 27 | size_t size, int direction); |
Glauber Costa | 6f53663 | 2008-03-25 18:36:20 -0300 | [diff] [blame] | 28 | void (*unmap_single)(struct device *dev, dma_addr_t addr, |
| 29 | size_t size, int direction); |
| 30 | void (*sync_single_for_cpu)(struct device *hwdev, |
| 31 | dma_addr_t dma_handle, size_t size, |
| 32 | int direction); |
| 33 | void (*sync_single_for_device)(struct device *hwdev, |
| 34 | dma_addr_t dma_handle, size_t size, |
| 35 | int direction); |
| 36 | void (*sync_single_range_for_cpu)(struct device *hwdev, |
| 37 | dma_addr_t dma_handle, unsigned long offset, |
| 38 | size_t size, int direction); |
| 39 | void (*sync_single_range_for_device)(struct device *hwdev, |
| 40 | dma_addr_t dma_handle, unsigned long offset, |
| 41 | size_t size, int direction); |
| 42 | void (*sync_sg_for_cpu)(struct device *hwdev, |
| 43 | struct scatterlist *sg, int nelems, |
| 44 | int direction); |
| 45 | void (*sync_sg_for_device)(struct device *hwdev, |
| 46 | struct scatterlist *sg, int nelems, |
| 47 | int direction); |
| 48 | int (*map_sg)(struct device *hwdev, struct scatterlist *sg, |
| 49 | int nents, int direction); |
| 50 | void (*unmap_sg)(struct device *hwdev, |
| 51 | struct scatterlist *sg, int nents, |
| 52 | int direction); |
| 53 | int (*dma_supported)(struct device *hwdev, u64 mask); |
| 54 | int is_phys; |
| 55 | }; |
| 56 | |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 57 | extern struct dma_mapping_ops *dma_ops; |
Glauber Costa | 22456b9 | 2008-03-25 18:36:21 -0300 | [diff] [blame] | 58 | |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 59 | static inline struct dma_mapping_ops *get_dma_ops(struct device *dev) |
Glauber Costa | c786df0 | 2008-03-25 18:36:37 -0300 | [diff] [blame] | 60 | { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 61 | #ifdef CONFIG_X86_32 |
| 62 | return dma_ops; |
| 63 | #else |
| 64 | if (unlikely(!dev) || !dev->archdata.dma_ops) |
| 65 | return dma_ops; |
| 66 | else |
| 67 | return dev->archdata.dma_ops; |
Ingo Molnar | 725c258 | 2008-10-10 19:47:12 +0200 | [diff] [blame] | 68 | #endif /* ASM_X86__DMA_MAPPING_H */ |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 69 | } |
| 70 | |
| 71 | /* Make sure we keep the same behaviour */ |
| 72 | static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) |
| 73 | { |
| 74 | #ifdef CONFIG_X86_32 |
| 75 | return 0; |
| 76 | #else |
| 77 | struct dma_mapping_ops *ops = get_dma_ops(dev); |
| 78 | if (ops->mapping_error) |
| 79 | return ops->mapping_error(dev, dma_addr); |
Glauber Costa | c786df0 | 2008-03-25 18:36:37 -0300 | [diff] [blame] | 80 | |
| 81 | return (dma_addr == bad_dma_address); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 82 | #endif |
Glauber Costa | c786df0 | 2008-03-25 18:36:37 -0300 | [diff] [blame] | 83 | } |
| 84 | |
Glauber Costa | 8d396de | 2008-03-25 18:36:31 -0300 | [diff] [blame] | 85 | #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f) |
| 86 | #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h) |
Joerg Roedel | 6c505ce | 2008-08-19 16:32:45 +0200 | [diff] [blame] | 87 | #define dma_is_consistent(d, h) (1) |
Glauber Costa | 8d396de | 2008-03-25 18:36:31 -0300 | [diff] [blame] | 88 | |
Glauber Costa | 802c1f6 | 2008-03-25 18:36:34 -0300 | [diff] [blame] | 89 | extern int dma_supported(struct device *hwdev, u64 mask); |
| 90 | extern int dma_set_mask(struct device *dev, u64 mask); |
| 91 | |
FUJITA Tomonori | 9f6ac57 | 2008-09-24 20:48:35 +0900 | [diff] [blame] | 92 | extern void *dma_generic_alloc_coherent(struct device *dev, size_t size, |
| 93 | dma_addr_t *dma_addr, gfp_t flag); |
| 94 | |
Glauber Costa | 22456b9 | 2008-03-25 18:36:21 -0300 | [diff] [blame] | 95 | static inline dma_addr_t |
| 96 | dma_map_single(struct device *hwdev, void *ptr, size_t size, |
| 97 | int direction) |
| 98 | { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 99 | struct dma_mapping_ops *ops = get_dma_ops(hwdev); |
| 100 | |
Glauber Costa | 22456b9 | 2008-03-25 18:36:21 -0300 | [diff] [blame] | 101 | BUG_ON(!valid_dma_direction(direction)); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 102 | return ops->map_single(hwdev, virt_to_phys(ptr), size, direction); |
Glauber Costa | 22456b9 | 2008-03-25 18:36:21 -0300 | [diff] [blame] | 103 | } |
| 104 | |
Glauber Costa | 0cb0ae6 | 2008-03-25 18:36:22 -0300 | [diff] [blame] | 105 | static inline void |
| 106 | dma_unmap_single(struct device *dev, dma_addr_t addr, size_t size, |
| 107 | int direction) |
| 108 | { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 109 | struct dma_mapping_ops *ops = get_dma_ops(dev); |
| 110 | |
Glauber Costa | 0cb0ae6 | 2008-03-25 18:36:22 -0300 | [diff] [blame] | 111 | BUG_ON(!valid_dma_direction(direction)); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 112 | if (ops->unmap_single) |
| 113 | ops->unmap_single(dev, addr, size, direction); |
Glauber Costa | 0cb0ae6 | 2008-03-25 18:36:22 -0300 | [diff] [blame] | 114 | } |
| 115 | |
Glauber Costa | 16a3ce9 | 2008-03-25 18:36:23 -0300 | [diff] [blame] | 116 | static inline int |
| 117 | dma_map_sg(struct device *hwdev, struct scatterlist *sg, |
| 118 | int nents, int direction) |
| 119 | { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 120 | struct dma_mapping_ops *ops = get_dma_ops(hwdev); |
| 121 | |
Glauber Costa | 16a3ce9 | 2008-03-25 18:36:23 -0300 | [diff] [blame] | 122 | BUG_ON(!valid_dma_direction(direction)); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 123 | return ops->map_sg(hwdev, sg, nents, direction); |
Glauber Costa | 16a3ce9 | 2008-03-25 18:36:23 -0300 | [diff] [blame] | 124 | } |
Glauber Costa | 72c784f | 2008-03-25 18:36:24 -0300 | [diff] [blame] | 125 | |
| 126 | static inline void |
| 127 | dma_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents, |
| 128 | int direction) |
| 129 | { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 130 | struct dma_mapping_ops *ops = get_dma_ops(hwdev); |
| 131 | |
Glauber Costa | 72c784f | 2008-03-25 18:36:24 -0300 | [diff] [blame] | 132 | BUG_ON(!valid_dma_direction(direction)); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 133 | if (ops->unmap_sg) |
| 134 | ops->unmap_sg(hwdev, sg, nents, direction); |
Glauber Costa | 72c784f | 2008-03-25 18:36:24 -0300 | [diff] [blame] | 135 | } |
Glauber Costa | c01dd8c | 2008-03-25 18:36:25 -0300 | [diff] [blame] | 136 | |
| 137 | static inline void |
| 138 | dma_sync_single_for_cpu(struct device *hwdev, dma_addr_t dma_handle, |
| 139 | size_t size, int direction) |
| 140 | { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 141 | struct dma_mapping_ops *ops = get_dma_ops(hwdev); |
| 142 | |
Glauber Costa | c01dd8c | 2008-03-25 18:36:25 -0300 | [diff] [blame] | 143 | BUG_ON(!valid_dma_direction(direction)); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 144 | if (ops->sync_single_for_cpu) |
| 145 | ops->sync_single_for_cpu(hwdev, dma_handle, size, direction); |
Glauber Costa | c01dd8c | 2008-03-25 18:36:25 -0300 | [diff] [blame] | 146 | flush_write_buffers(); |
| 147 | } |
| 148 | |
Glauber Costa | 9231b26 | 2008-03-25 18:36:26 -0300 | [diff] [blame] | 149 | static inline void |
| 150 | dma_sync_single_for_device(struct device *hwdev, dma_addr_t dma_handle, |
| 151 | size_t size, int direction) |
| 152 | { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 153 | struct dma_mapping_ops *ops = get_dma_ops(hwdev); |
| 154 | |
Glauber Costa | 9231b26 | 2008-03-25 18:36:26 -0300 | [diff] [blame] | 155 | BUG_ON(!valid_dma_direction(direction)); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 156 | if (ops->sync_single_for_device) |
| 157 | ops->sync_single_for_device(hwdev, dma_handle, size, direction); |
Glauber Costa | 9231b26 | 2008-03-25 18:36:26 -0300 | [diff] [blame] | 158 | flush_write_buffers(); |
| 159 | } |
| 160 | |
Glauber Costa | 627610f | 2008-03-25 18:36:27 -0300 | [diff] [blame] | 161 | static inline void |
| 162 | dma_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dma_handle, |
| 163 | unsigned long offset, size_t size, int direction) |
| 164 | { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 165 | struct dma_mapping_ops *ops = get_dma_ops(hwdev); |
Glauber Costa | 627610f | 2008-03-25 18:36:27 -0300 | [diff] [blame] | 166 | |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 167 | BUG_ON(!valid_dma_direction(direction)); |
| 168 | if (ops->sync_single_range_for_cpu) |
| 169 | ops->sync_single_range_for_cpu(hwdev, dma_handle, offset, |
| 170 | size, direction); |
Glauber Costa | 627610f | 2008-03-25 18:36:27 -0300 | [diff] [blame] | 171 | flush_write_buffers(); |
| 172 | } |
Glauber Costa | 7136233 | 2008-03-25 18:36:28 -0300 | [diff] [blame] | 173 | |
| 174 | static inline void |
| 175 | dma_sync_single_range_for_device(struct device *hwdev, dma_addr_t dma_handle, |
| 176 | unsigned long offset, size_t size, |
| 177 | int direction) |
| 178 | { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 179 | struct dma_mapping_ops *ops = get_dma_ops(hwdev); |
Glauber Costa | 7136233 | 2008-03-25 18:36:28 -0300 | [diff] [blame] | 180 | |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 181 | BUG_ON(!valid_dma_direction(direction)); |
| 182 | if (ops->sync_single_range_for_device) |
| 183 | ops->sync_single_range_for_device(hwdev, dma_handle, |
| 184 | offset, size, direction); |
Glauber Costa | 7136233 | 2008-03-25 18:36:28 -0300 | [diff] [blame] | 185 | flush_write_buffers(); |
| 186 | } |
| 187 | |
Glauber Costa | ed435de | 2008-03-25 18:36:29 -0300 | [diff] [blame] | 188 | static inline void |
| 189 | dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg, |
| 190 | int nelems, int direction) |
| 191 | { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 192 | struct dma_mapping_ops *ops = get_dma_ops(hwdev); |
| 193 | |
Glauber Costa | ed435de | 2008-03-25 18:36:29 -0300 | [diff] [blame] | 194 | BUG_ON(!valid_dma_direction(direction)); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 195 | if (ops->sync_sg_for_cpu) |
| 196 | ops->sync_sg_for_cpu(hwdev, sg, nelems, direction); |
Glauber Costa | ed435de | 2008-03-25 18:36:29 -0300 | [diff] [blame] | 197 | flush_write_buffers(); |
| 198 | } |
Glauber Costa | e7f3a91 | 2008-03-25 18:36:30 -0300 | [diff] [blame] | 199 | |
| 200 | static inline void |
| 201 | dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg, |
| 202 | int nelems, int direction) |
| 203 | { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 204 | struct dma_mapping_ops *ops = get_dma_ops(hwdev); |
| 205 | |
Glauber Costa | e7f3a91 | 2008-03-25 18:36:30 -0300 | [diff] [blame] | 206 | BUG_ON(!valid_dma_direction(direction)); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 207 | if (ops->sync_sg_for_device) |
| 208 | ops->sync_sg_for_device(hwdev, sg, nelems, direction); |
Glauber Costa | e7f3a91 | 2008-03-25 18:36:30 -0300 | [diff] [blame] | 209 | |
| 210 | flush_write_buffers(); |
| 211 | } |
Glauber Costa | 4d92fbf | 2008-03-25 18:36:32 -0300 | [diff] [blame] | 212 | |
| 213 | static inline dma_addr_t dma_map_page(struct device *dev, struct page *page, |
| 214 | size_t offset, size_t size, |
| 215 | int direction) |
| 216 | { |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 217 | struct dma_mapping_ops *ops = get_dma_ops(dev); |
| 218 | |
Ingo Molnar | 2be6214 | 2008-04-19 19:19:56 +0200 | [diff] [blame] | 219 | BUG_ON(!valid_dma_direction(direction)); |
FUJITA Tomonori | 8d8bb39 | 2008-07-25 19:44:49 -0700 | [diff] [blame] | 220 | return ops->map_single(dev, page_to_phys(page) + offset, |
| 221 | size, direction); |
Glauber Costa | 4d92fbf | 2008-03-25 18:36:32 -0300 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | static inline void dma_unmap_page(struct device *dev, dma_addr_t addr, |
| 225 | size_t size, int direction) |
| 226 | { |
| 227 | dma_unmap_single(dev, addr, size, direction); |
| 228 | } |
| 229 | |
Glauber Costa | 3cb6a91 | 2008-03-25 18:36:33 -0300 | [diff] [blame] | 230 | static inline void |
| 231 | dma_cache_sync(struct device *dev, void *vaddr, size_t size, |
| 232 | enum dma_data_direction dir) |
| 233 | { |
| 234 | flush_write_buffers(); |
| 235 | } |
Glauber Costa | ae17a63 | 2008-03-25 18:36:38 -0300 | [diff] [blame] | 236 | |
Glauber Costa | b7107a3 | 2008-03-25 18:36:39 -0300 | [diff] [blame] | 237 | static inline int dma_get_cache_alignment(void) |
| 238 | { |
| 239 | /* no easy way to get cache size on all x86, so return the |
| 240 | * maximum possible, to be safe */ |
| 241 | return boot_cpu_data.x86_clflush_size; |
| 242 | } |
| 243 | |
FUJITA Tomonori | 823e7e8 | 2008-09-08 18:10:13 +0900 | [diff] [blame] | 244 | static inline unsigned long dma_alloc_coherent_mask(struct device *dev, |
| 245 | gfp_t gfp) |
| 246 | { |
| 247 | unsigned long dma_mask = 0; |
Glauber Costa | b7107a3 | 2008-03-25 18:36:39 -0300 | [diff] [blame] | 248 | |
FUJITA Tomonori | 823e7e8 | 2008-09-08 18:10:13 +0900 | [diff] [blame] | 249 | dma_mask = dev->coherent_dma_mask; |
| 250 | if (!dma_mask) |
| 251 | dma_mask = (gfp & GFP_DMA) ? DMA_24BIT_MASK : DMA_32BIT_MASK; |
| 252 | |
| 253 | return dma_mask; |
| 254 | } |
| 255 | |
| 256 | static inline gfp_t dma_alloc_coherent_gfp_flags(struct device *dev, gfp_t gfp) |
| 257 | { |
Steven Noonan | 9fcaff0 | 2008-09-08 16:19:11 -0700 | [diff] [blame] | 258 | #ifdef CONFIG_X86_64 |
FUJITA Tomonori | 823e7e8 | 2008-09-08 18:10:13 +0900 | [diff] [blame] | 259 | unsigned long dma_mask = dma_alloc_coherent_mask(dev, gfp); |
| 260 | |
FUJITA Tomonori | 823e7e8 | 2008-09-08 18:10:13 +0900 | [diff] [blame] | 261 | if (dma_mask <= DMA_32BIT_MASK && !(gfp & GFP_DMA)) |
| 262 | gfp |= GFP_DMA32; |
| 263 | #endif |
| 264 | return gfp; |
| 265 | } |
| 266 | |
Joerg Roedel | 6c505ce | 2008-08-19 16:32:45 +0200 | [diff] [blame] | 267 | static inline void * |
| 268 | dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, |
| 269 | gfp_t gfp) |
| 270 | { |
| 271 | struct dma_mapping_ops *ops = get_dma_ops(dev); |
| 272 | void *memory; |
Glauber Costa | ae17a63 | 2008-03-25 18:36:38 -0300 | [diff] [blame] | 273 | |
FUJITA Tomonori | 8a53ad6 | 2008-09-08 18:10:12 +0900 | [diff] [blame] | 274 | gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32); |
| 275 | |
Joerg Roedel | 6c505ce | 2008-08-19 16:32:45 +0200 | [diff] [blame] | 276 | if (dma_alloc_from_coherent(dev, size, dma_handle, &memory)) |
| 277 | return memory; |
| 278 | |
| 279 | if (!dev) { |
| 280 | dev = &x86_dma_fallback_dev; |
| 281 | gfp |= GFP_DMA; |
| 282 | } |
| 283 | |
FUJITA Tomonori | 9821626 | 2008-09-10 00:49:48 +0900 | [diff] [blame] | 284 | if (!is_device_dma_capable(dev)) |
FUJITA Tomonori | de9f521 | 2008-09-08 18:10:11 +0900 | [diff] [blame] | 285 | return NULL; |
| 286 | |
FUJITA Tomonori | 823e7e8 | 2008-09-08 18:10:13 +0900 | [diff] [blame] | 287 | if (!ops->alloc_coherent) |
| 288 | return NULL; |
| 289 | |
| 290 | return ops->alloc_coherent(dev, size, dma_handle, |
| 291 | dma_alloc_coherent_gfp_flags(dev, gfp)); |
Joerg Roedel | 6c505ce | 2008-08-19 16:32:45 +0200 | [diff] [blame] | 292 | } |
| 293 | |
| 294 | static inline void dma_free_coherent(struct device *dev, size_t size, |
| 295 | void *vaddr, dma_addr_t bus) |
| 296 | { |
| 297 | struct dma_mapping_ops *ops = get_dma_ops(dev); |
| 298 | |
| 299 | WARN_ON(irqs_disabled()); /* for portability */ |
| 300 | |
| 301 | if (dma_release_from_coherent(dev, get_order(size), vaddr)) |
| 302 | return; |
| 303 | |
| 304 | if (ops->free_coherent) |
| 305 | ops->free_coherent(dev, size, vaddr, bus); |
| 306 | } |
| 307 | |
Glauber Costa | 6f53663 | 2008-03-25 18:36:20 -0300 | [diff] [blame] | 308 | #endif |