[mirror_ubuntu-artful-kernel.git] / include / asm-x86_64 / scatterlist.h

#ifndef _X8664_SCATTERLIST_H
#define _X8664_SCATTERLIST_H

#include <asm/types.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
a9dfd281 JD	4	#include <asm/types.h>
a9dfd281 JD	5
1da177e4 LT	6	struct scatterlist {
	7	struct page *page;
	8	unsigned int offset;
	9	unsigned int length;
	10	dma_addr_t dma_address;
	11	unsigned int dma_length;
	12	};
	13
	14	#define ISA_DMA_THRESHOLD (0x00ffffff)
	15
	16	/* These macros should be used after a pci_map_sg call has been done
	17	* to get bus addresses of each of the SG entries and their lengths.
	18	* You should only work with the number of sg entries pci_map_sg
	19	* returns.
	20	*/
	21	#define sg_dma_address(sg) ((sg)->dma_address)
	22	#define sg_dma_len(sg) ((sg)->dma_length)
	23
	24	#endif