mirror of https://gitee.com/openkylin/linux.git
25 lines
496 B
C
25 lines
496 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/dma-mapping.h>
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#include <linux/swiotlb.h>
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#include <linux/export.h>
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/* Set this to 1 if there is a HW IOMMU in the system */
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int iommu_detected __read_mostly;
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const struct dma_map_ops *dma_ops;
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EXPORT_SYMBOL(dma_ops);
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const struct dma_map_ops *dma_get_ops(struct device *dev)
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{
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return dma_ops;
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}
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EXPORT_SYMBOL(dma_get_ops);
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#ifdef CONFIG_SWIOTLB
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void __init swiotlb_dma_init(void)
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{
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dma_ops = &swiotlb_dma_ops;
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swiotlb_init(1);
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}
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#endif
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