[deliverable/linux.git] / include / asm-parisc / scatterlist.h

#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 */
Commit	Line	Data
1da177e4 LT	1	#ifndef _ASM_PARISC_SCATTERLIST_H
	2	#define _ASM_PARISC_SCATTERLIST_H
	3
	4	#include <asm/page.h>
	5
	6	struct 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 */