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#include <linux/mm.h>

struct scatterlist {
      unsigned long sg_magic;
      unsigned long page_link;
      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_dma_address(sg)      ((sg)->dma_address)
#define sg_dma_len(sg)          ((sg)->length)

#define ISA_DMA_THRESHOLD     (0xffffffff)

#endif                        /* !(_BLACKFIN_SCATTERLIST_H) */

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