1#ifndef _ALPHA_SCATTERLIST_H 2#define _ALPHA_SCATTERLIST_H 3 4#include <asm/page.h> 5#include <asm/types.h> 6 7struct scatterlist { 8#ifdef CONFIG_DEBUG_SG 9 unsigned long sg_magic; 10#endif 11 unsigned long page_link; 12 unsigned int offset; 13 14 unsigned int length; 15 16 dma_addr_t dma_address; 17 __u32 dma_length; 18}; 19 20#define sg_dma_address(sg) ((sg)->dma_address) 21#define sg_dma_len(sg) ((sg)->dma_length) 22 23#define ISA_DMA_THRESHOLD (~0UL) 24 25#endif /* !(_ALPHA_SCATTERLIST_H) */ 26