28 lines
746 B
C
28 lines
746 B
C
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// SPDX-License-Identifier: GPL-2.0
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#include <linux/dma-direct.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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void *arch_dma_alloc(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
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{
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return dma_direct_alloc_pages(dev, size, dma_handle, gfp, attrs);
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}
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void arch_dma_free(struct device *dev, size_t size, void *cpu_addr,
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dma_addr_t dma_addr, unsigned long attrs)
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{
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dma_direct_free_pages(dev, size, cpu_addr, dma_addr, attrs);
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}
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long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr,
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dma_addr_t dma_addr)
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{
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return page_to_pfn(virt_to_page(cpu_addr));
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}
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