1 /* Public domain. */ 2 3 #ifndef _LINUX_DMA_MAPPING_H 4 #define _LINUX_DMA_MAPPING_H 5 6 #include <linux/sizes.h> 7 8 #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : (1ULL<<(n)) -1) 9 10 #define dma_set_coherent_mask(x, y) 0 11 #define dma_set_max_seg_size(x, y) 0 12 13 #endif 14