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#ifndef _IOMMU_H
#define _IOMMU_H
struct udevice;
struct iommu_ops {
/**
* init() - Connect a device to it's IOMMU, called before probe()
* The iommu device can be fetched through dev->iommu
*
* @iommu_dev: IOMMU device
* @dev: Device to connect
* @return 0 if OK, -errno on error
*/
int (*connect)(struct udevice *dev);
/**
* 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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