diff options
| author | Stephen Rothwell <sfr@canb.auug.org.au> | 2005-10-25 16:59:03 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2005-10-27 16:45:52 +1000 |
| commit | 89edce0b4e71f6f78e27d7c18c63e957469b74d3 (patch) | |
| tree | 15d9c66f27aa86c27435b83d3cda8418d6cf22f1 /include/asm-powerpc/scatterlist.h | |
| parent | 8168f902fa9c2ca8930ea8d72cce283234df03b8 (diff) | |
[PATCH] powerpc: merge scatterlist.h
This depends on the 64bit dma_addr_t patch.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/scatterlist.h')
| -rw-r--r-- | include/asm-powerpc/scatterlist.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/include/asm-powerpc/scatterlist.h b/include/asm-powerpc/scatterlist.h new file mode 100644 index 000000000000..8c992d1491d4 --- /dev/null +++ b/include/asm-powerpc/scatterlist.h @@ -0,0 +1,45 @@ +#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 { + struct page *page; + 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 + +#endif /* __KERNEL__ */ +#endif /* _ASM_POWERPC_SCATTERLIST_H */ |