1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_DMA_MAPPING_H
3#define _ASM_X86_DMA_MAPPING_H
4
5/*
6 * IOMMU interface. See Documentation/core-api/dma-api-howto.rst and
7 * Documentation/core-api/dma-api.rst for documentation.
8 */
9
10#include <linux/scatterlist.h>
11#include <asm/io.h>
12#include <asm/swiotlb.h>
13
14extern int iommu_merge;
15extern int panic_on_overflow;
16
17extern const struct dma_map_ops *dma_ops;
18
19static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
20{
21	return dma_ops;
22}
23
24#endif
25