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1#ifndef _ASM_PARISC_SCATTERLIST_H
2#define _ASM_PARISC_SCATTERLIST_H
3
4#include <asm/page.h>
5
6struct scatterlist {
7 struct page *page;
8 unsigned int offset;
9
10 unsigned int length;
11
12 /* an IOVA can be 64-bits on some PA-Risc platforms. */
13 dma_addr_t iova; /* I/O Virtual Address */
14 __u32 iova_length; /* bytes mapped */
15};
16
17#define sg_virt_addr(sg) ((unsigned long)(page_address(sg->page) + sg->offset))
18#define sg_dma_address(sg) ((sg)->iova)
19#define sg_dma_len(sg) ((sg)->iova_length)
20
21#define ISA_DMA_THRESHOLD (~0UL)
22
23#endif /* _ASM_PARISC_SCATTERLIST_H */