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Linux kernel mirror (for testing)
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kernel
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linux
1#ifndef _ASM_PARISC_SCATTERLIST_H
2#define _ASM_PARISC_SCATTERLIST_H
3
4#include <asm/page.h>
5#include <asm/types.h>
6
7struct scatterlist {
8#ifdef CONFIG_DEBUG_SG
9 unsigned long sg_magic;
10#endif
11 unsigned long page_link;
12 unsigned int offset;
13
14 unsigned int length;
15
16 /* an IOVA can be 64-bits on some PA-Risc platforms. */
17 dma_addr_t iova; /* I/O Virtual Address */
18 __u32 iova_length; /* bytes mapped */
19};
20
21#define sg_virt_addr(sg) ((unsigned long)sg_virt(sg))
22#define sg_dma_address(sg) ((sg)->iova)
23#define sg_dma_len(sg) ((sg)->iova_length)
24
25#define ISA_DMA_THRESHOLD (~0UL)
26
27#endif /* _ASM_PARISC_SCATTERLIST_H */