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

#ifndef __ASM_SH_SCATTERLIST_H
#define __ASM_SH_SCATTERLIST_H

#include <asm/pgtable.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	PHYS_ADDR_MASK

/* 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
d02b08f6	4	#include <asm/pgtable.h>
a9dfd281 JD	5	#include <asm/types.h>
a9dfd281 JD	6
1da177e4	7	struct scatterlist {
d6ec0842 JA	8	#ifdef CONFIG_DEBUG_SG
	9	unsigned long sg_magic;
	10	#endif
18dabf47	11	unsigned long page_link;
1da177e4 LT	12	unsigned int offset;/* for highmem, page offset */
	13	dma_addr_t dma_address;
	14	unsigned int length;
	15	};
	16
d02b08f6	17	#define ISA_DMA_THRESHOLD PHYS_ADDR_MASK
1da177e4	18
634bf4f6 PM	19	/* These macros should be used after a pci_map_sg call has been done
	20	* to get bus addresses of each of the SG entries and their lengths.
	21	* You should only work with the number of sg entries pci_map_sg
	22	* returns, or alternatively stop on the first sg_dma_len(sg) which
	23	* is 0.
	24	*/
	25	#define sg_dma_address(sg) ((sg)->dma_address)
	26	#define sg_dma_len(sg) ((sg)->length)
	27
1da177e4	28	#endif /* !(__ASM_SH_SCATTERLIST_H) */