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- #ifndef _ASM_PARISC_SCATTERLIST_H
- #define _ASM_PARISC_SCATTERLIST_H
- #include <asm/page.h>
- struct scatterlist {
- 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) ((unsigned long)(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 */
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