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scatterlist.h

#ifndef _ASM_PARISC_SCATTERLIST_H
#define _ASM_PARISC_SCATTERLIST_H

#include <asm/page.h>
#include <asm/types.h>

struct scatterlist {
#ifdef CONFIG_DEBUG_SG
      unsigned long sg_magic;
#endif
      unsigned long page_link;
      unsigned int offset;

      unsigned int length;

      /* an IOVA can be 64-bits on some PA-Risc platforms. */
      dma_addr_t iova;  /* I/O Virtual Address */
      __u32      iova_length; /* bytes mapped */
};

#define sg_virt_addr(sg) ((unsigned long)sg_virt(sg))
#define sg_dma_address(sg) ((sg)->iova)
#define sg_dma_len(sg)     ((sg)->iova_length)

#define ISA_DMA_THRESHOLD (~0UL)

#endif /* _ASM_PARISC_SCATTERLIST_H */

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