1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_X86_DMA_MAPPING_H
3 #define _ASM_X86_DMA_MAPPING_H
6 * IOMMU interface. See Documentation/DMA-API-HOWTO.txt and
7 * Documentation/DMA-API.txt for documentation.
10 #include <linux/scatterlist.h>
11 #include <linux/dma-debug.h>
13 #include <asm/swiotlb.h>
14 #include <linux/dma-contiguous.h>
16 extern int iommu_merge;
17 extern int panic_on_overflow;
19 extern const struct dma_map_ops *dma_ops;
21 static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)