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422 giacomo 1
#ifndef _I386_SCATTERLIST_H
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#define _I386_SCATTERLIST_H
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struct scatterlist {
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    struct page         *page;
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    unsigned int        offset;
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    dma_addr_t          dma_address;
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    unsigned int        length;
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};
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/* These macros should be used after a pci_map_sg call has been done
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 * to get bus addresses of each of the SG entries and their lengths.
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 * You should only work with the number of sg entries pci_map_sg
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 * returns.
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 */
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#define sg_dma_address(sg)      ((sg)->dma_address)
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#define sg_dma_len(sg)          ((sg)->length)
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#define ISA_DMA_THRESHOLD (0x00ffffff)
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#endif /* !(_I386_SCATTERLIST_H) */