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

#ifndef __ASM_SH_SCATTERLIST_H
#define __ASM_SH_SCATTERLIST_H

#include <asm/types.h>

struct scatterlist {
#ifdef CONFIG_DEBUG_SG
    unsigned long sg_magic;
#endif
    unsigned long page_link;
    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	6	struct scatterlist {
d6ec0842 JA	7	#ifdef CONFIG_DEBUG_SG
	8	unsigned long sg_magic;
	9	#endif
18dabf47	10	unsigned long page_link;
1da177e4 LT	11	unsigned int offset;/* for highmem, page offset */
	12	dma_addr_t dma_address;
	13	unsigned int length;
	14	};
	15
	16	#define ISA_DMA_THRESHOLD (0x1fffffff)
	17
634bf4f6 PM	18	/* These macros should be used after a pci_map_sg call has been done
	19	* to get bus addresses of each of the SG entries and their lengths.
	20	* You should only work with the number of sg entries pci_map_sg
	21	* returns, or alternatively stop on the first sg_dma_len(sg) which
	22	* is 0.
	23	*/
	24	#define sg_dma_address(sg) ((sg)->dma_address)
	25	#define sg_dma_len(sg) ((sg)->length)
	26
1da177e4	27	#endif /* !(__ASM_SH_SCATTERLIST_H) */