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#ifndef _ASM_X86_SCATTERLIST_H
#define _ASM_X86_SCATTERLIST_H
#include <asm/types.h>
struct scatterlist {
#ifdef CONFIG_DEBUG_SG
unsigned long sg_magic;
#endif
unsigned long page_link;
unsigned int offset;
unsigned int length;
dma_addr_t dma_address;
#ifdef CONFIG_X86_64
unsigned int dma_length;
#endif
};
#define ARCH_HAS_SG_CHAIN
#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)
#ifdef CONFIG_X86_32
# define sg_dma_len(sg) ((sg)->length)
#else
# define sg_dma_len(sg) ((sg)->dma_length)
#endif
#endif
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