linux/include/asm-blackfin/scatterlist.h
Jens Axboe 26da107848 blackfin: remove sg_address()
I would have replaced it with sg_virt(), but it doesn't appear to be
used at all.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-23 12:42:44 +02:00

28 lines
733 B
C

#ifndef _BLACKFIN_SCATTERLIST_H
#define _BLACKFIN_SCATTERLIST_H
#include <linux/mm.h>
struct scatterlist {
#ifdef CONFIG_DEBUG_SG
unsigned long sg_magic;
#endif
unsigned long page_link;
unsigned int offset;
dma_addr_t dma_address;
unsigned int length;
};
/*
* These macros should be used after a pci_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)->length)
#define ISA_DMA_THRESHOLD (0xffffffff)
#endif /* !(_BLACKFIN_SCATTERLIST_H) */