diff options
author | James Morris <jmorris@namei.org> | 2008-08-28 10:47:34 +1000 |
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committer | James Morris <jmorris@namei.org> | 2008-08-28 10:47:34 +1000 |
commit | 86d688984deefa3ae5a802880c11f2b408b5d6cf (patch) | |
tree | 7ea5e8189b0a774626d3ed7c3c87df2495a4c4a0 /arch/arm/include/asm/scatterlist.h | |
parent | 93c06cbbf9fea5d5be1778febb7fa9ab1a74e5f5 (diff) | |
parent | 4c246edd2550304df5b766cc841584b2bb058843 (diff) |
Merge branch 'master' into next
Diffstat (limited to 'arch/arm/include/asm/scatterlist.h')
-rw-r--r-- | arch/arm/include/asm/scatterlist.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/include/asm/scatterlist.h b/arch/arm/include/asm/scatterlist.h new file mode 100644 index 00000000000..ca0a37d0340 --- /dev/null +++ b/arch/arm/include/asm/scatterlist.h @@ -0,0 +1,27 @@ +#ifndef _ASMARM_SCATTERLIST_H +#define _ASMARM_SCATTERLIST_H + +#include <asm/memory.h> +#include <asm/types.h> + +struct scatterlist { +#ifdef CONFIG_DEBUG_SG + unsigned long sg_magic; +#endif + unsigned long page_link; + unsigned int offset; /* buffer offset */ + dma_addr_t dma_address; /* dma address */ + unsigned int length; /* 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) + +#endif /* _ASMARM_SCATTERLIST_H */ |