diff options
Diffstat (limited to 'include/asm-parisc/scatterlist.h')
| -rw-r--r-- | include/asm-parisc/scatterlist.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/asm-parisc/scatterlist.h b/include/asm-parisc/scatterlist.h new file mode 100644 index 000000000000..236c1d0fba33 --- /dev/null +++ b/include/asm-parisc/scatterlist.h @@ -0,0 +1,23 @@ +#ifndef _ASM_PARISC_SCATTERLIST_H +#define _ASM_PARISC_SCATTERLIST_H + +#include <asm/page.h> + +struct scatterlist { + struct page *page; + 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)(page_address(sg->page) + sg->offset)) +#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 */ |