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linux-next/include/asm-sparc64/scatterlist.h
Jens Axboe d6ec084200 Add CONFIG_DEBUG_SG sg validation
Add a Kconfig entry which will toggle some sanity checks on the sg
entry and tables.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-22 21:20:03 +02:00

29 lines
565 B
C

/* $Id: scatterlist.h,v 1.11 2001/12/17 07:05:15 davem Exp $ */
#ifndef _SPARC64_SCATTERLIST_H
#define _SPARC64_SCATTERLIST_H
#include <asm/page.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;
__u32 dma_length;
};
#define sg_dma_address(sg) ((sg)->dma_address)
#define sg_dma_len(sg) ((sg)->dma_length)
#define ISA_DMA_THRESHOLD (~0UL)
#define ARCH_HAS_SG_CHAIN
#endif /* !(_SPARC64_SCATTERLIST_H) */