include/asm-mips/scatterlist.h

   1 #ifndef __ASM_SCATTERLIST_H
   2 #define __ASM_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 /*
  14  * These macros should be used after a pci_map_sg call has been done
  15  * to get bus addresses of each of the SG entries and their lengths.
  16  * You should only work with the number of sg entries pci_map_sg
  17  * returns, or alternatively stop on the first sg_dma_len(sg) which
  18  * is 0.
  19  */
  20 #define sg_dma_address(sg)      ((sg)->dma_address)
  21 #define sg_dma_len(sg)          ((sg)->length)
  22
  23 #define ISA_DMA_THRESHOLD (0x00ffffffUL)
  24
  25 #endif /* __ASM_SCATTERLIST_H */