1 #ifndef _ASM_X86_SCATTERLIST_H
2 #define _ASM_X86_SCATTERLIST_H
8 unsigned long sg_magic;
10 unsigned long page_link;
13 dma_addr_t dma_address;
14 unsigned int dma_length;
17 #define ARCH_HAS_SG_CHAIN
18 #define ISA_DMA_THRESHOLD (0x00ffffff)
21 * These macros should be used after a pci_map_sg call has been done
22 * to get bus addresses of each of the SG entries and their lengths.
23 * You should only work with the number of sg entries pci_map_sg
26 #define sg_dma_address(sg) ((sg)->dma_address)
28 # define sg_dma_len(sg) ((sg)->length)
30 # define sg_dma_len(sg) ((sg)->dma_length)