linux/include/asm-sh64/scatterlist.h
Robert P. J. Day cbd627a449 sh64: Move DMA macros from pci.h to scatterlist.h.
In order to be more consistent with other architectures, move two
DMA-related scatterlist macros from pci.h to scatterlist.h.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-10-30 13:08:47 +09:00

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1,018 B
C

/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* include/asm-sh64/scatterlist.h
*
* Copyright (C) 2003 Paul Mundt
*
*/
#ifndef __ASM_SH64_SCATTERLIST_H
#define __ASM_SH64_SCATTERLIST_H
#include <asm/types.h>
struct scatterlist {
#ifdef CONFIG_DEBUG_SG
unsigned long sg_magic;
#endif
unsigned long page_link;
unsigned int offset;/* for highmem, page 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 /* !__ASM_SH64_SCATTERLIST_H */