scatterlist.h
上传用户:lgb322
上传日期:2013-02-24
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- #ifndef _ASM_PARISC_SCATTERLIST_H
- #define _ASM_PARISC_SCATTERLIST_H
- struct scatterlist {
- char * address; /* Location data is to be transferred to */
- 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_dma_address(sg) ((sg)->iova)
- #define sg_dma_len(sg) ((sg)->iova_length)
- #define ISA_DMA_THRESHOLD (~0UL)
- #endif /* _ASM_PARISC_SCATTERLIST_H */