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/* $NetBSD: scatterlist.h,v 1.8 2021/12/19 12:13:23 riastradh Exp $ */
/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Taylor R. Campbell.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _LINUX_SCATTERLIST_H_
#define _LINUX_SCATTERLIST_H_
#include <sys/bus.h>
#include <asm/io.h>
#include <linux/mm.h>
#include <linux/mm_types.h>
#include <linux/gfp.h>
#include <linux/types.h>
/* namespace */
#define __sg_alloc_table_from_pages linux___sg_alloc_table_from_pages
#define dma_map_sg linux_dma_map_sg
#define dma_map_sg_attrs linux_dma_map_sg_attrs
#define dma_unmap_sg linux_dma_unmap_sg
#define dma_unmap_sg_attrs linux_dma_unmap_sg_attrs
#define sg_alloc_table linux_sg_alloc_table
#define sg_alloc_table_from_bus_dmamem linux_sg_alloc_table_from_bus_dmamem
#define sg_alloc_table_from_pages linux_sg_alloc_table_from_pages
#define sg_dma_address linux_sg_dma_address
#define sg_dma_len linux_sg_dma_len
#define sg_free_table linux_sg_free_table
struct page;
struct sg_table {
struct scatterlist {
struct page **sg_pgs;
unsigned sg_npgs;
bus_dma_tag_t sg_dmat;
bus_dmamap_t sg_dmamap;
} sgl[1];
unsigned nents;
};
int sg_alloc_table(struct sg_table *, unsigned, gfp_t);
int __sg_alloc_table_from_pages(struct sg_table *, struct page **, unsigned,
bus_size_t, bus_size_t, unsigned, gfp_t);
int sg_alloc_table_from_pages(struct sg_table *, struct page **, unsigned,
bus_size_t, bus_size_t, gfp_t);
int sg_alloc_table_from_bus_dmamem(struct sg_table *, bus_dma_tag_t,
const bus_dma_segment_t *, int, gfp_t);
void sg_free_table(struct sg_table *);
bus_addr_t sg_dma_address(const struct scatterlist *);
bus_size_t sg_dma_len(const struct scatterlist *);
int dma_map_sg(bus_dma_tag_t, struct scatterlist *, int, int);
int dma_map_sg_attrs(bus_dma_tag_t, struct scatterlist *, int, int, int);
void dma_unmap_sg(bus_dma_tag_t, struct scatterlist *, int, int);
void dma_unmap_sg_attrs(bus_dma_tag_t, struct scatterlist *, int, int, int);
#endif /* _LINUX_SCATTERLIST_H_ */
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