diff options
| author | Robert P. J. Day <rpjday@crashcourse.ca> | 2007-10-30 13:08:47 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2007-10-30 13:08:47 +0900 |
| commit | cbd627a44928ba20b5c22b21b8ce2be27733a9d7 (patch) | |
| tree | 85765ff09dd0b8ca6207f5eaacd671878892c378 /include/asm-sh64/scatterlist.h | |
| parent | 82798a17ad40df827d465329a20ace80497f9b32 (diff) | |
sh64: Move DMA macros from pci.h to scatterlist.h.
In order to be more consistent with other architectures, move two
DMA-related scatterlist macros from pci.h to scatterlist.h.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh64/scatterlist.h')
| -rw-r--r-- | include/asm-sh64/scatterlist.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-sh64/scatterlist.h b/include/asm-sh64/scatterlist.h index 5109251970e..7f729bbfce4 100644 --- a/include/asm-sh64/scatterlist.h +++ b/include/asm-sh64/scatterlist.h @@ -23,6 +23,15 @@ 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 (0xffffffff) #endif /* !__ASM_SH64_SCATTERLIST_H */ |