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     struct page         *page;
   8     unsigned int        offset;
   9     dma_addr_t          dma_address;
  10     unsigned int        length;
  11 };
  12
  13 #define ARCH_HAS_SG_CHAIN
  14
  15 /* These macros should be used after a pci_map_sg call has been done
  16  * to get bus addresses of each of the SG entries and their lengths.
  17  * You should only work with the number of sg entries pci_map_sg
  18  * returns.
  19  */
  20 #define sg_dma_address(sg)      ((sg)->dma_address)
  21 #define sg_dma_len(sg)          ((sg)->length)
  22
  23 #define ISA_DMA_THRESHOLD (0x00ffffff)
  24
  25 #endif /* !(_I386_SCATTERLIST_H) */