Release 4.17 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/DMA-API-HOWTO.txt and
 * Documentation/DMA-API.txt for documentation.
 */

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

#ifdef CONFIG_ISA

# define ISA_DMA_BIT_MASK DMA_BIT_MASK(24)
#else

# define ISA_DMA_BIT_MASK DMA_BIT_MASK(32)
#endif

extern int iommu_merge;
extern struct device x86_dma_fallback_dev;
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;
}

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FUJITA Tomonori
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int arch_dma_supported(struct device *dev, u64 mask);

#define arch_dma_supported arch_dma_supported

bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp);

#define arch_dma_alloc_attrs arch_dma_alloc_attrs

#endif
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Christoph Hellwig
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Glauber de Oliveira Costa
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FUJITA Tomonori
15
13.39%
2
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Jan Beulich
15
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1
6.25%
Joerg Roedel
6
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2
12.50%
Bart Van Assche
5
4.46%
2
12.50%
H. Peter Anvin
2
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1
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Marek Szyprowski
1
0.89%
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Paul Bolle
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Directory: arch/x86/include/asm

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