18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _ASM_X86_DMA_MAPPING_H 38c2ecf20Sopenharmony_ci#define _ASM_X86_DMA_MAPPING_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci/* 68c2ecf20Sopenharmony_ci * IOMMU interface. See Documentation/core-api/dma-api-howto.rst and 78c2ecf20Sopenharmony_ci * Documentation/core-api/dma-api.rst for documentation. 88c2ecf20Sopenharmony_ci */ 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ci#include <linux/scatterlist.h> 118c2ecf20Sopenharmony_ci#include <asm/io.h> 128c2ecf20Sopenharmony_ci#include <asm/swiotlb.h> 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ciextern int iommu_merge; 158c2ecf20Sopenharmony_ciextern int panic_on_overflow; 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_ciextern const struct dma_map_ops *dma_ops; 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_cistatic inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) 208c2ecf20Sopenharmony_ci{ 218c2ecf20Sopenharmony_ci return dma_ops; 228c2ecf20Sopenharmony_ci} 238c2ecf20Sopenharmony_ci 248c2ecf20Sopenharmony_ci#endif 25