Shared input/output load-store architecture
US7836211B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2004 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Jun 30, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/54
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method are provided that enable I/O devices to be shared and/or partitioned among a plurality of operating system domains within the load-store fabric of each of the operating system domains without requiring modification to the operating system or driver software of the operating system domains. The apparatus includes sharing logic and a first shared input/output (I/O) endpoint. The sharing logic is coupled to a plurality of operating system domains through a load-store fabric. The sharing logic routes transactions between the plurality of operating system domains. The first shared input/output (I/O) endpoint is coupled to the sharing logic. The first shared I/O endpoint requests/completes the transactions for the each of said plurality of operating system domains according to a variant of a protocol that encapsulates an OS domain header within a transaction layer packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.