ia64/linux-2.6.18-xen.hg

view include/asm-arm/scatterlist.h @ 782:9ab1c319531f

merge with linux-2.6.18-xen.hg
author Isaku Yamahata <yamahata@valinux.co.jp>
date Wed Jan 28 13:07:23 2009 +0900 (2009-01-28)
parents 831230e53067
children
line source
1 #ifndef _ASMARM_SCATTERLIST_H
2 #define _ASMARM_SCATTERLIST_H
4 #include <asm/memory.h>
5 #include <asm/types.h>
7 struct scatterlist {
8 struct page *page; /* buffer page */
9 unsigned int offset; /* buffer offset */
10 dma_addr_t dma_address; /* dma address */
11 unsigned int length; /* length */
12 };
14 /*
15 * These macros should be used after a pci_map_sg call has been done
16 * to get bus addresses of each of the SG entries and their lengths.
17 * You should only work with the number of sg entries pci_map_sg
18 * returns, or alternatively stop on the first sg_dma_len(sg) which
19 * is 0.
20 */
21 #define sg_dma_address(sg) ((sg)->dma_address)
22 #define sg_dma_len(sg) ((sg)->length)
24 #endif /* _ASMARM_SCATTERLIST_H */