[linux-2.6-block.git] / include / asm-x86_64 / scatterlist.h

#ifndef _X8664_SCATTERLIST_H
#define _X8664_SCATTERLIST_H

struct scatterlist {
    struct page		*page;
    unsigned int	offset;
    unsigned int	length;
    dma_addr_t		dma_address;
    unsigned int        dma_length;
};

#define ISA_DMA_THRESHOLD (0x00ffffff)

/* These macros should be used after a pci_map_sg call has been done
 * to get bus addresses of each of the SG entries and their lengths.
 * You should only work with the number of sg entries pci_map_sg
 * returns.
 */
#define sg_dma_address(sg)     ((sg)->dma_address)
#define sg_dma_len(sg)         ((sg)->dma_length)

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef _X8664_SCATTERLIST_H
	2	#define _X8664_SCATTERLIST_H
	3
	4	struct scatterlist {
	5	struct page *page;
	6	unsigned int offset;
	7	unsigned int length;
	8	dma_addr_t dma_address;
	9	unsigned int dma_length;
	10	};
	11
	12	#define ISA_DMA_THRESHOLD (0x00ffffff)
	13
	14	/* These macros should be used after a pci_map_sg call has been done
	15	* to get bus addresses of each of the SG entries and their lengths.
	16	* You should only work with the number of sg entries pci_map_sg
	17	* returns.
	18	*/
	19	#define sg_dma_address(sg) ((sg)->dma_address)
	20	#define sg_dma_len(sg) ((sg)->dma_length)
	21
	22	#endif