Add CONFIG_DEBUG_SG sg validation
[linux-2.6.git] / include / asm-alpha / scatterlist.h
1 #ifndef _ALPHA_SCATTERLIST_H
2 #define _ALPHA_SCATTERLIST_H
3
4 #include <asm/page.h>
5 #include <asm/types.h>
6   
7 struct scatterlist {
8 #ifdef CONFIG_DEBUG_SG
9         unsigned long sg_magic;
10 #endif
11         unsigned long page_link;
12         unsigned int offset;
13
14         unsigned int length;
15
16         dma_addr_t dma_address;
17         __u32 dma_length;
18 };
19
20 #define sg_dma_address(sg)      ((sg)->dma_address)
21 #define sg_dma_len(sg)          ((sg)->dma_length)
22
23 #define ISA_DMA_THRESHOLD (~0UL)
24
25 #endif /* !(_ALPHA_SCATTERLIST_H) */