blob: ca0a37d0340093b06b1a7d28f09b1c9e89015f48 (
plain) (
tree)
|
|
#ifndef _ASMARM_SCATTERLIST_H
#define _ASMARM_SCATTERLIST_H
#include <asm/memory.h>
#include <asm/types.h>
struct scatterlist {
#ifdef CONFIG_DEBUG_SG
unsigned long sg_magic;
#endif
unsigned long page_link;
unsigned int offset; /* buffer offset */
dma_addr_t dma_address; /* dma address */
unsigned int length; /* length */
};
/*
* 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, or alternatively stop on the first sg_dma_len(sg) which
* is 0.
*/
#define sg_dma_address(sg) ((sg)->dma_address)
#define sg_dma_len(sg) ((sg)->length)
#endif /* _ASMARM_SCATTERLIST_H */
|
