#ifndef _ASM_PARISC_SCATTERLIST_H | |
#define _ASM_PARISC_SCATTERLIST_H | |
#include <asm/page.h> | |
#include <asm/types.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 */ |