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| author | Ingo Molnar <mingo@elte.hu> | 2008-09-14 20:24:00 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-14 20:24:00 +0400 |
| commit | 83bd6998b04fc1bb7280b14f16b2bdbdc07c914b (patch) | |
| tree | af1bbe2bac5752b69b1ac58bf5d822c735da439b /arch/powerpc/include/asm/scatterlist.h | |
| parent | e7250b8ae3870f37f660c2f65cafcaba85e3bfd3 (diff) | |
| parent | adee14b2e1557d0a8559f29681732d05a89dfc35 (diff) | |
| download | linux-83bd6998b04fc1bb7280b14f16b2bdbdc07c914b.tar.xz | |
Merge commit 'v2.6.27-rc6' into timers/hpet
Diffstat (limited to 'arch/powerpc/include/asm/scatterlist.h')
| -rw-r--r-- | arch/powerpc/include/asm/scatterlist.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/scatterlist.h b/arch/powerpc/include/asm/scatterlist.h new file mode 100644 index 000000000000..fcf7d55afe45 --- /dev/null +++ b/arch/powerpc/include/asm/scatterlist.h @@ -0,0 +1,50 @@ +#ifndef _ASM_POWERPC_SCATTERLIST_H +#define _ASM_POWERPC_SCATTERLIST_H +/* + * Copyright (C) 2001 PPC64 Team, IBM Corp + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifdef __KERNEL__ +#include <linux/types.h> +#include <asm/dma.h> + +struct scatterlist { +#ifdef CONFIG_DEBUG_SG + unsigned long sg_magic; +#endif + unsigned long page_link; + unsigned int offset; + unsigned int length; + + /* For TCE support */ + dma_addr_t dma_address; + u32 dma_length; +}; + +/* + * These macros should be used after a dma_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) +#ifdef __powerpc64__ +#define sg_dma_len(sg) ((sg)->dma_length) +#else +#define sg_dma_len(sg) ((sg)->length) +#endif + +#ifdef __powerpc64__ +#define ISA_DMA_THRESHOLD (~0UL) +#endif + +#define ARCH_HAS_SG_CHAIN + +#endif /* __KERNEL__ */ +#endif /* _ASM_POWERPC_SCATTERLIST_H */ |