Networked input/output memory management unit
US11003588B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 22, 2019 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Aug 22, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/68
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A networked input/output memory management unit (IOMMU) includes a plurality of IOMMUs. The networked IOMMU receives a memory access request that includes a domain physical address generated by a first address translation layer. The networked IOMMU selectively translates the domain physical address into a physical address in a system memory using one of the plurality of IOMMUs that is selected based on a type of a device that generated the memory access request. In some cases, the networked IOMMU is connected to a graphics processing unit (GPU), at least one peripheral device, and the memory. The networked IOMMU includes a command queue to receive the memory access requests, a primary IOMMU to selectively translate the domain physical address in memory access requests from the GPU, and a secondary IOMMU to translate the domain physical address in memory requests from the peripheral device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.