frv: use asm-generic/scatterlist.h

#ifndef _ASM_SCATTERLIST_H

#define _ASM_SCATTERLIST_H

#include <asm/types.h>

/*

 * Drivers must set either ->address or (preferred) page and ->offset

 * to indicate where data must be transferred to/from.

 *

 * Using page is recommended since it handles highmem data as well as

 * low mem. ->address is restricted to data which has a virtual mapping, and

 * it will go away in the future. Updating to page can be automated very

 * easily -- something like

 *

 * sg->address = some_ptr;

 *

 * can be rewritten as

 *

 * sg_set_buf(sg, some_ptr, length);

 *

 * and that's it. There's no excuse for not highmem enabling YOUR driver. /jens

 */

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;

};

/*

 * 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)

#include <asm-generic/scatterlist.h>

#define ISA_DMA_THRESHOLD (0xffffffffUL)