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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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4fac8076df
Move the few remaining bits of swiotlb glue towards their callers, and remove the pointless on ia64 swiotlb variable. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian König <christian.koenig@amd.com>
35 lines
660 B
C
35 lines
660 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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#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)
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static int __init dma_init(void)
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{
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dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
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return 0;
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}
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fs_initcall(dma_init);
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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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