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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1#ifndef _X8664_SCATTERLIST_H
2#define _X8664_SCATTERLIST_H
3
4struct scatterlist {
5 struct page *page;
6 unsigned int offset;
7 unsigned int length;
8 dma_addr_t dma_address;
9 unsigned int dma_length;
10};
11
12#define ISA_DMA_THRESHOLD (0x00ffffff)
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.
18 */
19#define sg_dma_address(sg) ((sg)->dma_address)
20#define sg_dma_len(sg) ((sg)->dma_length)
21
22#endif