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#ifndef _ASM_PARISC_SCATTERLIST_H

#define _ASM_PARISC_SCATTERLIST_H

#include <asm/page.h>

struct scatterlist {

        /* This will disappear in 2.5.x */

        char *address;

        /* page/offset only valid if ADDRESS member is NULL.

        ** Needed to support CONFIG_HIGHMEM on x386.

        ** I still think davem is a dork for forcing other

        ** arches to add this to 2.4.x. -ggg

        */

        struct page *page;

        unsigned int offset;

        unsigned int length;

        /* an IOVA can be 64-bits on some PA-Risc platforms. */

        dma_addr_t iova;        /* I/O Virtual Address */

        __u32      iova_length; /* bytes mapped */

};

#define sg_virt_addr(sg) (((sg)->address) ? ((sg)->address) : \

                (page_address((sg)->page) + (sg)->offset))

#define sg_dma_address(sg) ((sg)->iova)

#define sg_dma_len(sg)     ((sg)->iova_length)

#define ISA_DMA_THRESHOLD (~0UL)

#endif /* _ASM_PARISC_SCATTERLIST_H */