diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/dma-mapping.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index aa36a0d1d9df..29ad2ce700f0 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -7,6 +7,7 @@ #include <linux/dma-direction.h> #include <linux/scatterlist.h> #include <linux/bug.h> +#include <linux/cache.h> /** * List of possible attributes associated with a DMA mapping. The semantics @@ -703,6 +704,18 @@ static inline int dma_get_cache_alignment(void) } #endif +#ifdef ARCH_HAS_DMA_MINALIGN +#define ____dma_from_device_aligned __aligned(ARCH_DMA_MINALIGN) +#else +#define ____dma_from_device_aligned +#endif +/* Mark start of DMA buffer */ +#define __dma_from_device_group_begin(GROUP) \ + __cacheline_group_begin(GROUP) ____dma_from_device_aligned +/* Mark end of DMA buffer */ +#define __dma_from_device_group_end(GROUP) \ + __cacheline_group_end(GROUP) ____dma_from_device_aligned + static inline void *dmam_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t gfp) { |