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Diffstat (limited to 'include/asm-mn10300/scatterlist.h')
-rw-r--r-- | include/asm-mn10300/scatterlist.h | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/include/asm-mn10300/scatterlist.h b/include/asm-mn10300/scatterlist.h deleted file mode 100644 index 67535901b9ff..000000000000 --- a/include/asm-mn10300/scatterlist.h +++ /dev/null | |||
@@ -1,55 +0,0 @@ | |||
1 | /* MN10300 Scatterlist definitions | ||
2 | * | ||
3 | * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd. | ||
4 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or | ||
7 | * modify it under the terms of the GNU General Public Licence | ||
8 | * as published by the Free Software Foundation; either version | ||
9 | * 2 of the Licence, or (at your option) any later version. | ||
10 | */ | ||
11 | #ifndef _ASM_SCATTERLIST_H | ||
12 | #define _ASM_SCATTERLIST_H | ||
13 | |||
14 | #include <asm/types.h> | ||
15 | |||
16 | /* | ||
17 | * Drivers must set either ->address or (preferred) page and ->offset | ||
18 | * to indicate where data must be transferred to/from. | ||
19 | * | ||
20 | * Using page is recommended since it handles highmem data as well as | ||
21 | * low mem. ->address is restricted to data which has a virtual mapping, and | ||
22 | * it will go away in the future. Updating to page can be automated very | ||
23 | * easily -- something like | ||
24 | * | ||
25 | * sg->address = some_ptr; | ||
26 | * | ||
27 | * can be rewritten as | ||
28 | * | ||
29 | * sg_set_page(virt_to_page(some_ptr)); | ||
30 | * sg->offset = (unsigned long) some_ptr & ~PAGE_MASK; | ||
31 | * | ||
32 | * and that's it. There's no excuse for not highmem enabling YOUR driver. /jens | ||
33 | */ | ||
34 | struct scatterlist { | ||
35 | #ifdef CONFIG_DEBUG_SG | ||
36 | unsigned long sg_magic; | ||
37 | #endif | ||
38 | unsigned long page_link; | ||
39 | unsigned int offset; /* for highmem, page offset */ | ||
40 | dma_addr_t dma_address; | ||
41 | unsigned int length; | ||
42 | }; | ||
43 | |||
44 | #define ISA_DMA_THRESHOLD (0x00ffffff) | ||
45 | |||
46 | /* | ||
47 | * These macros should be used after a pci_map_sg call has been done | ||
48 | * to get bus addresses of each of the SG entries and their lengths. | ||
49 | * You should only work with the number of sg entries pci_map_sg | ||
50 | * returns. | ||
51 | */ | ||
52 | #define sg_dma_address(sg) ((sg)->dma_address) | ||
53 | #define sg_dma_len(sg) ((sg)->length) | ||
54 | |||
55 | #endif /* _ASM_SCATTERLIST_H */ | ||