Switching apparatus and method for providing shared I/O within a load-store fabric
US8102843B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2004 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Nov 27, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/602
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus and method are provided that enable I/O devices to be shared among multiple operating system domains. The apparatus has a first plurality of I/O ports, a second I/O port, and core logic. The first plurality of I/O ports is coupled to a plurality of operating system domains through a PCI Express fabric. Each of the first plurality of I/O ports is configured to route PCI Express transactions between said plurality of operating system domains and the switching apparatus. The second I/O port is coupled to a first shared input/output endpoint, where the first shared input/output endpoint is configured to request/complete said PCI Express transactions for each of the plurality of operating system domains. The core logic is coupled to the first plurality of I/O ports and the second I/O port. The core logic routes the PCI Express transactions between the first plurality of I/O ports and the second I/O port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.