linux/include/asm-cris/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

24 lines
553 B
C

#ifndef __ASM_CRIS_SCATTERLIST_H
#define __ASM_CRIS_SCATTERLIST_H
struct scatterlist {
#ifdef CONFIG_DEBUG_SG
unsigned long sg_magic;
#endif
char * address; /* Location data is to be transferred to */
unsigned int length;
/* The following is i386 highmem junk - not used by us */
unsigned long page_link;
unsigned int offset;/* for highmem, page offset */
};
#define sg_dma_address(sg) ((sg)->address)
#define sg_dma_len(sg) ((sg)->length)
/* i386 junk */
#define ISA_DMA_THRESHOLD (0x1fffffff)
#endif /* !(__ASM_CRIS_SCATTERLIST_H) */