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15b28bbcd5
Most mainstream architectures are using 65536 entries, so lets stick to that. If someone is really desperate to override it that can still be done through <asm/dma-mapping.h>, but I'd rather see a really good rationale for that. dma_debug_init is now called as a core_initcall, which for many architectures means much earlier, and provides dma-debug functionality earlier in the boot process. This should be safe as it only relies on the memory allocator already being available. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com>
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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