Switching apparatus and method for link initialization in a shared I/O environment
US7698483B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2004 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Nov 23, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus has a first plurality of I/O ports, a second I/O port, and link training logic. The first plurality is coupled to a plurality of operating system domains through a load-store fabric. Each of the first plurality is configured to route transactions between the plurality of operating system domains and the switching apparatus. The second I/O port is coupled to a first shared input/output endpoint. The first shared input/output endpoint is configured to request/complete the transactions for each of the plurality of operating system domains. The link training logic is coupled to the second I/O port. The link training logic initializes a link between the second I/O port and the first shared input/output endpoint to support the transactions corresponding to the each of the plurality of operating system domains. The link is initialized in a manner that is transparent to the plurality of operating system domains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.