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@@ -3,6 +3,27 @@
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struct udevice;
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+struct iommu_ops {
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+ /**
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+ * map() - map DMA memory
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+ *
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+ * @dev: device for which to map DMA memory
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+ * @addr: CPU address of the memory
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+ * @size: size of the memory
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+ * @return DMA address for the device
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+ */
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+ dma_addr_t (*map)(struct udevice *dev, void *addr, size_t size);
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+
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+ /**
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+ * unmap() - unmap DMA memory
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+ *
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+ * @dev: device for which to unmap DMA memory
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+ * @addr: DMA address of the memory
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+ * @size: size of the memory
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+ */
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+ void (*unmap)(struct udevice *dev, dma_addr_t addr, size_t size);
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+};
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+
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#if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) && \
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CONFIG_IS_ENABLED(IOMMU)
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int dev_iommu_enable(struct udevice *dev);
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@@ -13,4 +34,7 @@ static inline int dev_iommu_enable(struct udevice *dev)
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}
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#endif
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+dma_addr_t dev_iommu_dma_map(struct udevice *dev, void *addr, size_t size);
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+void dev_iommu_dma_unmap(struct udevice *dev, dma_addr_t addr, size_t size);
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+
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#endif
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