make oldconfig will rebuild these...
[linux-2.4.21-pre4.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;          /* Location for highmem page, if any */
9         dma_addr_t      dma_address;    /* dma address                   */
10         unsigned int    length;         /* length                        */
11 };
12
13 /*
14  * These macros should be used after a pci_map_sg call has been done
15  * to get bus addresses of each of the SG entries and their lengths.
16  * You should only work with the number of sg entries pci_map_sg
17  * returns, or alternatively stop on the first sg_dma_len(sg) which
18  * is 0.
19  */
20 #define sg_dma_address(sg)      ((sg)->dma_address)
21 #define sg_dma_len(sg)          ((sg)->length)
22
23 #define ISA_DMA_THRESHOLD (0xffffffff)
24
25 #endif /* _ASMARM_SCATTERLIST_H */