more changes on original files
[linux-2.4.git] / include / asm-arm / scatterlist.h
1 #ifndef _ASMARM_SCATTERLIST_H
2 #define _ASMARM_SCATTERLIST_H
3
4 #include <asm/types.h>
5
6 struct scatterlist {
7         char            *address;       /* virtual address               */
8         struct page     *page;          /* buffer page                   */
9         unsigned int    offset;         /* buffer address                */
10         dma_addr_t      dma_address;    /* dma address                   */
11         unsigned int    length;         /* length                        */
12 };
13
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)
23
24 #define ISA_DMA_THRESHOLD (0xffffffff)
25
26 #endif /* _ASMARM_SCATTERLIST_H */