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#ifdef __KERNEL__

#ifndef _PPC_SCATTERLIST_H

#define _PPC_SCATTERLIST_H

#include <asm/dma.h>

struct scatterlist {

        char *address;          /* Location data is to be transferred to,

                                 * or NULL for highmem page */

        struct page * page;     /* Location for highmem page, if any */

        unsigned int offset;    /* for highmem, page offset */

        unsigned int length;    /* length at address or page+offset */

        dma_addr_t dma_address; /* phys/bus dma address */

        unsigned int dma_length; /* number of bytes mapped at dma_address */

        /* Note that if we coalesce multiple scatterlist elements,

           dma_length can be different from 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)->dma_length)

#endif /* !(_PPC_SCATTERLIST_H) */

#endif /* __KERNEL__ */