mirror of https://gitee.com/openkylin/linux.git
24 lines
569 B
C
24 lines
569 B
C
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#ifndef _ASM_PARISC_SCATTERLIST_H
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#define _ASM_PARISC_SCATTERLIST_H
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#include <asm/page.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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unsigned int length;
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/* an IOVA can be 64-bits on some PA-Risc platforms. */
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dma_addr_t iova; /* I/O Virtual Address */
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__u32 iova_length; /* bytes mapped */
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};
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#define sg_virt_addr(sg) ((unsigned long)(page_address(sg->page) + sg->offset))
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#define sg_dma_address(sg) ((sg)->iova)
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#define sg_dma_len(sg) ((sg)->iova_length)
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#define ISA_DMA_THRESHOLD (~0UL)
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#endif /* _ASM_PARISC_SCATTERLIST_H */
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