fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-blackfin / scatterlist.h
blob60e07b92044cdda56ec6834eba26d30f2f153f80
1 #ifndef _BLACKFIN_SCATTERLIST_H
2 #define _BLACKFIN_SCATTERLIST_H
4 #include <linux/mm.h>
6 struct scatterlist {
7 struct page *page;
8 unsigned int offset;
9 dma_addr_t dma_address;
10 unsigned int length;
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.
20 #define sg_address(sg) (page_address((sg)->page) + (sg)->offset)
21 #define sg_dma_address(sg) ((sg)->dma_address)
22 #define sg_dma_len(sg) ((sg)->length)
24 #define ISA_DMA_THRESHOLD (0xffffffff)
26 #endif /* !(_BLACKFIN_SCATTERLIST_H) */