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| author | Wim Van Sebroeck <wim@iguana.be> | 2007-05-11 19:03:13 +0000 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2007-05-11 19:03:13 +0000 |
| commit | 5c34202b8bf942da411b6599668a76b07449bbfd (patch) | |
| tree | 5719c361321eaddc8e4f1b0c8a7994f0e9a6fdd3 /include/asm-blackfin/scatterlist.h | |
| parent | 0d4804b31f91cfbcff6d62af0bc09a893a1c8ae0 (diff) | |
| parent | 1f8a6b658a943b4f04a1fc7b3a420360202c86cd (diff) | |
| download | blackbird-op-linux-5c34202b8bf942da411b6599668a76b07449bbfd.tar.gz blackbird-op-linux-5c34202b8bf942da411b6599668a76b07449bbfd.zip | |
Merge /pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'include/asm-blackfin/scatterlist.h')
| -rw-r--r-- | include/asm-blackfin/scatterlist.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-blackfin/scatterlist.h b/include/asm-blackfin/scatterlist.h new file mode 100644 index 000000000000..60e07b92044c --- /dev/null +++ b/include/asm-blackfin/scatterlist.h @@ -0,0 +1,26 @@ +#ifndef _BLACKFIN_SCATTERLIST_H +#define _BLACKFIN_SCATTERLIST_H + +#include <linux/mm.h> + +struct scatterlist { + struct page *page; + unsigned int offset; + dma_addr_t dma_address; + unsigned int length; +}; + +/* + * These macros should be used after a pci_map_sg call has been done + * to get bus addresses of each of the SG entries and their lengths. + * You should only work with the number of sg entries pci_map_sg + * returns, or alternatively stop on the first sg_dma_len(sg) which + * is 0. + */ +#define sg_address(sg) (page_address((sg)->page) + (sg)->offset) +#define sg_dma_address(sg) ((sg)->dma_address) +#define sg_dma_len(sg) ((sg)->length) + +#define ISA_DMA_THRESHOLD (0xffffffff) + +#endif /* !(_BLACKFIN_SCATTERLIST_H) */ |
