arch/parisc/include/asm/scatterlist.h

   1 #ifndef _ASM_PARISC_SCATTERLIST_H
   2 #define _ASM_PARISC_SCATTERLIST_H
   3
   4 #include <asm/page.h>
   5 #include <asm/types.h>
   6
   7 struct scatterlist {
   8 #ifdef CONFIG_DEBUG_SG
   9         unsigned long sg_magic;
  10 #endif
  11         unsigned long page_link;
  12         unsigned int offset;
  13
  14         unsigned int length;
  15
  16         /* an IOVA can be 64-bits on some PA-Risc platforms. */
  17         dma_addr_t iova;        /* I/O Virtual Address */
  18         __u32      iova_length; /* bytes mapped */
  19 };
  20
  21 #define sg_virt_addr(sg) ((unsigned long)sg_virt(sg))
  22 #define sg_dma_address(sg) ((sg)->iova)
  23 #define sg_dma_len(sg)     ((sg)->iova_length)
  24
  25 #define ISA_DMA_THRESHOLD (~0UL)
  26
  27 #endif /* _ASM_PARISC_SCATTERLIST_H */