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powerpc: use asm-generic/scatterlist.h

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Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
FUJITA Tomonori 2010-05-26 14:44:33 -07:00 committed by Linus Torvalds
parent 4a14d84ea2
commit e32205eb58
2 changed files with 4 additions and 28 deletions
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3
arch/powerpc/Kconfig
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@ -663,6 +663,9 @@ config ZONE_DMA
config NEED_DMA_MAP_STATE
def_bool (PPC64 || NOT_COHERENT_CACHE)
config NEED_SG_DMA_LENGTH
def_bool y
config GENERIC_ISA_DMA
bool
depends on PPC64 || POWER4 || 6xx && !CPM2

29
arch/powerpc/include/asm/scatterlist.h
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@ -9,38 +9,11 @@
* 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 or SWIOTLB 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)
#define sg_dma_len(sg) ((sg)->dma_length)
#include <asm-generic/scatterlist.h>
#ifdef __powerpc64__
#define ISA_DMA_THRESHOLD (~0UL)
#endif
#define ARCH_HAS_SG_CHAIN
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SCATTERLIST_H */