x86: add PAGE_KERNEL_EXEC_NOCACHE
[wrt350n-kernel.git] / include / asm-xtensa / scatterlist.h
blob810080bb0a2b2cfa498c39fed32c11d2897763bd
1 /*
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
6 * for more details.
8 * Copyright (C) 2001 - 2005 Tensilica Inc.
9 */
11 #ifndef _XTENSA_SCATTERLIST_H
12 #define _XTENSA_SCATTERLIST_H
14 #include <asm/types.h>
16 struct scatterlist {
17 #ifdef CONFIG_DEBUG_SG
18 unsigned long sg_magic;
19 #endif
20 unsigned long page_link;
21 unsigned int offset;
22 dma_addr_t dma_address;
23 unsigned int length;
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
31 * is 0.
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 */