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- #ifndef _IOMMU_H
- #define _IOMMU_H
- struct udevice;
- struct iommu_ops {
- /**
- * map() - map DMA memory
- *
- * @dev: device for which to map DMA memory
- * @addr: CPU address of the memory
- * @size: size of the memory
- * @return DMA address for the device
- */
- dma_addr_t (*map)(struct udevice *dev, void *addr, size_t size);
- /**
- * unmap() - unmap DMA memory
- *
- * @dev: device for which to unmap DMA memory
- * @addr: DMA address of the memory
- * @size: size of the memory
- */
- void (*unmap)(struct udevice *dev, dma_addr_t addr, size_t size);
- };
- #if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) && \
- CONFIG_IS_ENABLED(IOMMU)
- int dev_iommu_enable(struct udevice *dev);
- #else
- static inline int dev_iommu_enable(struct udevice *dev)
- {
- return 0;
- }
- #endif
- dma_addr_t dev_iommu_dma_map(struct udevice *dev, void *addr, size_t size);
- void dev_iommu_dma_unmap(struct udevice *dev, dma_addr_t addr, size_t size);
- #endif
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