drivers/iommu/virtio-iommu.c

58 	struct interval_tree_node	iova;
313 static int viommu_add_mapping(struct viommu_domain *vdomain, u64 iova, u64 end,
324 	mapping->iova.start	= iova;
325 	mapping->iova.last	= end;
329 	interval_tree_insert(&mapping->iova, &vdomain->mappings);
339  * @iova: start of the range
345 				  u64 iova, u64 end)
353 	next = interval_tree_iter_first(&vdomain->mappings, iova, end);
356 		mapping = container_of(node, struct viommu_mapping, iova);
357 		next = interval_tree_iter_next(node, iova, end);
360 		if (mapping->iova.start < iova)
367 		unmapped += mapping->iova.last - mapping->iova.start + 1;
386 	u64 iova = vdomain->domain.geometry.aperture_start;
391 	iova = ALIGN(iova, granule);
398 		if (resv_end < iova || resv_start > limit)
402 		if (resv_start > iova) {
403 			ret = viommu_add_mapping(vdomain, iova, resv_start - 1,
404 						 (phys_addr_t)iova, flags);
412 		iova = resv_end + 1;
415 	ret = viommu_add_mapping(vdomain, iova, limit, (phys_addr_t)iova,
422 	viommu_del_mappings(vdomain, 0, iova);
444 		mapping = container_of(node, struct viommu_mapping, iova);
448 			.virt_start	= cpu_to_le64(mapping->iova.start),
449 			.virt_end	= cpu_to_le64(mapping->iova.last),
814 static int viommu_map_pages(struct iommu_domain *domain, unsigned long iova,
821 	u64 end = iova + size - 1;
832 	ret = viommu_add_mapping(vdomain, iova, end, paddr, flags);
840 			.virt_start	= cpu_to_le64(iova),
848 			viommu_del_mappings(vdomain, iova, end);
858 static size_t viommu_unmap_pages(struct iommu_domain *domain, unsigned long iova,
868 	unmapped = viommu_del_mappings(vdomain, iova, iova + size - 1);
879 		.virt_start	= cpu_to_le64(iova),
880 		.virt_end	= cpu_to_le64(iova + unmapped - 1),
888 				       dma_addr_t iova)
897 	node = interval_tree_iter_first(&vdomain->mappings, iova, iova);
899 		mapping = container_of(node, struct viommu_mapping, iova);
900 		paddr = mapping->paddr + (iova - mapping->iova.start);
916 				 unsigned long iova, size_t size)