[linux-2.6-block.git] / arch / x86 / include / asm / dma-mapping.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_DMA_MAPPING_H
#define _ASM_X86_DMA_MAPPING_H

/*
 * IOMMU interface. See Documentation/core-api/dma-api-howto.rst and
 * Documentation/core-api/dma-api.rst for documentation.
 */

#include <linux/scatterlist.h>
#include <linux/dma-debug.h>
#include <asm/io.h>
#include <asm/swiotlb.h>

extern int iommu_merge;
extern int panic_on_overflow;

extern const struct dma_map_ops *dma_ops;

static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
	return dma_ops;
}

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1965aae3 PA	2	#ifndef _ASM_X86_DMA_MAPPING_H
1965aae3 PA	3	#define _ASM_X86_DMA_MAPPING_H
6f536635 GC	4
6f536635 GC	5	/*
985098a0 MCC	6	* IOMMU interface. See Documentation/core-api/dma-api-howto.rst and
985098a0 MCC	7	* Documentation/core-api/dma-api.rst for documentation.
6f536635 GC	8	*/
	9
	10	#include <linux/scatterlist.h>
2118d0c5	11	#include <linux/dma-debug.h>
6f536635 GC	12	#include <asm/io.h>
	13	#include <asm/swiotlb.h>
	14
b7107a3d	15	extern int iommu_merge;
b7107a3d	16	extern int panic_on_overflow;
7c183416	17
5299709d	18	extern const struct dma_map_ops *dma_ops;
160c1d8e	19
815dd187	20	static inline const struct dma_map_ops get_arch_dma_ops(struct bus_type bus)
c786df08	21	{
8d8bb39b	22	return dma_ops;
8d8bb39b FT	23	}
8d8bb39b FT	24
6f536635	25	#endif