tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifdef __KERNEL__
2#ifndef _PPC_SCATTERLIST_H
3#define _PPC_SCATTERLIST_H
4
5#include <asm/dma.h>
6
7struct scatterlist {
8 struct page *page;
9 unsigned int offset;
10 dma_addr_t dma_address;
11 unsigned int 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#endif /* !(_PPC_SCATTERLIST_H) */
25#endif /* __KERNEL__ */