diff options
Diffstat (limited to 'arch/xtensa/include/asm/scatterlist.h')
-rw-r--r-- | arch/xtensa/include/asm/scatterlist.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/scatterlist.h b/arch/xtensa/include/asm/scatterlist.h new file mode 100644 index 00000000000..810080bb0a2 --- /dev/null +++ b/arch/xtensa/include/asm/scatterlist.h | |||
@@ -0,0 +1,39 @@ | |||
1 | /* | ||
2 | * include/asm-xtensa/scatterlist.h | ||
3 | * | ||
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. | ||
7 | * | ||
8 | * Copyright (C) 2001 - 2005 Tensilica Inc. | ||
9 | */ | ||
10 | |||
11 | #ifndef _XTENSA_SCATTERLIST_H | ||
12 | #define _XTENSA_SCATTERLIST_H | ||
13 | |||
14 | #include <asm/types.h> | ||
15 | |||
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; | ||
24 | }; | ||
25 | |||
26 | /* | ||
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. | ||
32 | */ | ||
33 | #define sg_dma_address(sg) ((sg)->dma_address) | ||
34 | #define sg_dma_len(sg) ((sg)->length) | ||
35 | |||
36 | |||
37 | #define ISA_DMA_THRESHOLD (~0UL) | ||
38 | |||
39 | #endif /* _XTENSA_SCATTERLIST_H */ | ||