2 * include/asm-xtensa/scatterlist.h
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
8 * Copyright (C) 2001 - 2005 Tensilica Inc.
11 #ifndef _XTENSA_SCATTERLIST_H
12 #define _XTENSA_SCATTERLIST_H
14 #include <asm/types.h>
17 #ifdef CONFIG_DEBUG_SG
18 unsigned long sg_magic;
20 unsigned long page_link;
22 dma_addr_t dma_address;
27 * These macros should be used after a pci_map_sg call has been done
28 * to get bus addresses of each of the SG entries and their lengths.
29 * You should only work with the number of sg entries pci_map_sg
30 * returns, or alternatively stop on the first sg_dma_len(sg) which
33 #define sg_dma_address(sg) ((sg)->dma_address)
34 #define sg_dma_len(sg) ((sg)->length)
37 #define ISA_DMA_THRESHOLD (~0UL)
39 #endif /* _XTENSA_SCATTERLIST_H */