#ifndef _BLACKFIN_SCATTERLIST_H #define _BLACKFIN_SCATTERLIST_H #include <linux/mm.h> struct scatterlist { struct page *page; unsigned int offset; dma_addr_t dma_address; unsigned int length; }; /* * These macros should be used after a pci_map_sg call has been done * to get bus addresses of each of the SG entries and their lengths. * You should only work with the number of sg entries pci_map_sg * returns, or alternatively stop on the first sg_dma_len(sg) which * is 0. */ #define sg_address(sg) (page_address((sg)->page) + (sg)->offset) #define sg_dma_address(sg) ((sg)->dma_address) #define sg_dma_len(sg) ((sg)->length) #define ISA_DMA_THRESHOLD (0xffffffff) #endif /* !(_BLACKFIN_SCATTERLIST_H) */