1 // Copyright © 2021 Intel Corporation 2 // 3 // SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause 4 5 /// Trait to trigger DMA mapping updates for devices managed by virtio-iommu 6 /// 7 /// Trait meant for triggering the DMA mapping update related to an external 8 /// device not managed fully through virtio. It is dedicated to virtio-iommu 9 /// in order to trigger the map update anytime the mapping is updated from the 10 /// guest. 11 pub trait ExternalDmaMapping: Send + Sync { 12 /// Map a memory range map(&self, iova: u64, gpa: u64, size: u64) -> std::result::Result<(), std::io::Error>13 fn map(&self, iova: u64, gpa: u64, size: u64) -> std::result::Result<(), std::io::Error>; 14 15 /// Unmap a memory range unmap(&self, iova: u64, size: u64) -> std::result::Result<(), std::io::Error>16 fn unmap(&self, iova: u64, size: u64) -> std::result::Result<(), std::io::Error>; 17 } 18