#ifndef _X8664_SCATTERLIST_H | |
#define _X8664_SCATTERLIST_H | |
struct scatterlist { | |
struct page *page; | |
unsigned int offset; | |
unsigned int length; | |
dma_addr_t dma_address; | |
unsigned int dma_length; | |
}; | |
#define ISA_DMA_THRESHOLD (0x00ffffff) | |
/* These macros should be used after a pci_map_sg call has been done | |
* to get bus addresses of each of the SG entries and their lengths. | |
* You should only work with the number of sg entries pci_map_sg | |
* returns. | |
*/ | |
#define sg_dma_address(sg) ((sg)->dma_address) | |
#define sg_dma_len(sg) ((sg)->dma_length) | |
#endif |