[mirror_ubuntu-bionic-kernel.git] / include / asm-sh / scatterlist.h

#ifndef __ASM_SH_SCATTERLIST_H
#define __ASM_SH_SCATTERLIST_H

#include <asm/types.h>

struct scatterlist {
    struct page * page; /* Location for highmem page, if any */
    unsigned int offset;/* for highmem, page offset */
    dma_addr_t dma_address;
    unsigned int length;
};

#define ISA_DMA_THRESHOLD (0x1fffffff)

/* 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, or alternatively stop on the first sg_dma_len(sg) which
 * is 0.
 */
#define sg_dma_address(sg)	((sg)->dma_address)
#define sg_dma_len(sg)		((sg)->length)

#endif /* !(__ASM_SH_SCATTERLIST_H) */
Commit	Line	Data
1da177e4 LT	1	#ifndef __ASM_SH_SCATTERLIST_H
	2	#define __ASM_SH_SCATTERLIST_H
	3
a9dfd281 JD	4	#include <asm/types.h>
a9dfd281 JD	5
1da177e4 LT	6	struct scatterlist {
	7	struct page * page; /* Location for highmem page, if any */
	8	unsigned int offset;/* for highmem, page offset */
	9	dma_addr_t dma_address;
	10	unsigned int length;
	11	};
	12
	13	#define ISA_DMA_THRESHOLD (0x1fffffff)
	14
634bf4f6 PM	15	/* These macros should be used after a pci_map_sg call has been done
	16	* to get bus addresses of each of the SG entries and their lengths.
	17	* You should only work with the number of sg entries pci_map_sg
	18	* returns, or alternatively stop on the first sg_dma_len(sg) which
	19	* is 0.
	20	*/
	21	#define sg_dma_address(sg) ((sg)->dma_address)
	22	#define sg_dma_len(sg) ((sg)->length)
	23
1da177e4	24	#endif /* !(__ASM_SH_SCATTERLIST_H) */