[mirror_ubuntu-focal-kernel.git] / include / asm-sh64 / scatterlist.h

/*
 * 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 */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* This file is subject to the terms and conditions of the GNU General Public
	3	* License. See the file "COPYING" in the main directory of this archive
	4	* for more details.
	5	*
	6	* include/asm-sh64/scatterlist.h
	7	*
	8	* Copyright (C) 2003 Paul Mundt
	9	*
	10	*/
	11	#ifndef __ASM_SH64_SCATTERLIST_H
	12	#define __ASM_SH64_SCATTERLIST_H
	13
a9dfd281 JD	14	#include <asm/types.h>
a9dfd281 JD	15
1da177e4	16	struct scatterlist {
d6ec0842 JA	17	#ifdef CONFIG_DEBUG_SG
	18	unsigned long sg_magic;
	19	#endif
18dabf47	20	unsigned long page_link;
1da177e4 LT	21	unsigned int offset;/* for highmem, page offset */
	22	dma_addr_t dma_address;
	23	unsigned int length;
	24	};
	25
cbd627a4 RD	26	/* These macros should be used after a pci_map_sg call has been done
	27	* to get bus addresses of each of the SG entries and their lengths.
	28	* You should only work with the number of sg entries pci_map_sg
	29	* returns, or alternatively stop on the first sg_dma_len(sg) which
	30	* is 0.
	31	*/
	32	#define sg_dma_address(sg) ((sg)->dma_address)
	33	#define sg_dma_len(sg) ((sg)->length)
	34
1da177e4 LT	35	#define ISA_DMA_THRESHOLD (0xffffffff)
	36
	37	#endif /* !__ASM_SH64_SCATTERLIST_H */