include/asm-x86/scatterlist_32.h

   1 #ifndef _I386_SCATTERLIST_H
   2 #define _I386_SCATTERLIST_H
   3
   4 #include <asm/types.h>
   5
   6 struct scatterlist {
   7 #ifdef CONFIG_DEBUG_SG
   8     unsigned long       sg_magic;
   9 #endif
  10     unsigned long       page_link;
  11     unsigned int        offset;
  12     dma_addr_t          dma_address;
  13     unsigned int        length;
  14 };
  15
  16 #define ARCH_HAS_SG_CHAIN
  17
  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.
  22  */
  23 #define sg_dma_address(sg)      ((sg)->dma_address)
  24 #define sg_dma_len(sg)          ((sg)->length)
  25
  26 #define ISA_DMA_THRESHOLD (0x00ffffff)
  27
  28 #endif /* !(_I386_SCATTERLIST_H) */