diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-10-27 10:50:54 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-10-27 10:50:54 +0100 |
commit | 4944dd62de21230af039eda7cd218e9a09021d11 (patch) | |
tree | bac70f7bab8506c7e1b0408bacbdb0b1d77262e9 /arch/x86/include/asm/scatterlist.h | |
parent | f17845e5d97ead8fbdadfd40039e058ec7cf4a42 (diff) | |
parent | 0173a3265b228da319ceb9c1ec6a5682fd1b2d92 (diff) |
Merge commit 'v2.6.28-rc2' into tracing/urgent
Diffstat (limited to 'arch/x86/include/asm/scatterlist.h')
-rw-r--r-- | arch/x86/include/asm/scatterlist.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/x86/include/asm/scatterlist.h b/arch/x86/include/asm/scatterlist.h new file mode 100644 index 00000000000..263d397d2ee --- /dev/null +++ b/arch/x86/include/asm/scatterlist.h @@ -0,0 +1,33 @@ +#ifndef _ASM_X86_SCATTERLIST_H +#define _ASM_X86_SCATTERLIST_H + +#include <asm/types.h> + +struct scatterlist { +#ifdef CONFIG_DEBUG_SG + unsigned long sg_magic; +#endif + unsigned long page_link; + unsigned int offset; + unsigned int length; + dma_addr_t dma_address; + unsigned int dma_length; +}; + +#define ARCH_HAS_SG_CHAIN +#define ISA_DMA_THRESHOLD (0x00ffffff) + +/* + * 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. + */ +#define sg_dma_address(sg) ((sg)->dma_address) +#ifdef CONFIG_X86_32 +# define sg_dma_len(sg) ((sg)->length) +#else +# define sg_dma_len(sg) ((sg)->dma_length) +#endif + +#endif /* _ASM_X86_SCATTERLIST_H */ |