LXR linux/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
   7struct 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 */
  28