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| author | Robert P. J. Day <rpjday@crashcourse.ca> | 2008-02-04 22:29:54 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-05 09:44:20 -0800 |
| commit | 82b12e232d2a71f566dca48df4ae4548e6d8d53d (patch) | |
| tree | a727e6dbfe1764e0f684ea8248384e9ad9fdc6b9 /include/asm-frv/scatterlist.h | |
| parent | 7038220aa511131f348018b85df172a21476fef9 (diff) | |
FRV: move DMA macros to scatterlist.h for consistency.
To be consistent with other architectures, these two DMA macros should
be defined in scatterlist.h as opposed to dma-mapping.h
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-frv/scatterlist.h')
| -rw-r--r-- | include/asm-frv/scatterlist.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/asm-frv/scatterlist.h b/include/asm-frv/scatterlist.h index 2e7143b5a7a..4bca8a28546 100644 --- a/include/asm-frv/scatterlist.h +++ b/include/asm-frv/scatterlist.h @@ -31,6 +31,16 @@ struct scatterlist { 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_dma_address(sg) ((sg)->dma_address) +#define sg_dma_len(sg) ((sg)->length) + #define ISA_DMA_THRESHOLD (0xffffffffUL) #endif /* !_ASM_SCATTERLIST_H */ |