include/asm-mips/scatterlist.h

   1 #ifndef __ASM_SCATTERLIST_H
   2 #define __ASM_SCATTERLIST_H
   3
   4 struct scatterlist {
   5         struct page *   page;
   6         unsigned int    offset;
   7         dma_addr_t      dma_address;
   8         unsigned int    length;
   9 };
  10
  11 /*
  12  * These macros should be used after a pci_map_sg call has been done
  13  * to get bus addresses of each of the SG entries and their lengths.
  14  * You should only work with the number of sg entries pci_map_sg
  15  * returns, or alternatively stop on the first sg_dma_len(sg) which
  16  * is 0.
  17  */
  18 #define sg_dma_address(sg)      ((sg)->dma_address)
  19 #define sg_dma_len(sg)          ((sg)->length)
  20
  21 #define ISA_DMA_THRESHOLD (0x00ffffffUL)
  22
  23 #endif /* __ASM_SCATTERLIST_H */