#ifndef _ASMARM_SCATTERLIST_H #define _ASMARM_SCATTERLIST_H #include <asm/memory.h> #include <asm/types.h> struct scatterlist { struct page *page; /* buffer page */ unsigned int offset; /* buffer offset */ dma_addr_t dma_address; /* dma address */ unsigned int length; /* 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_dma_address(sg) ((sg)->dma_address) #define sg_dma_len(sg) ((sg)->length) #endif /* _ASMARM_SCATTERLIST_H */