Bus enumeration in a system with multiple buses
US8122171B2 · kind B2 · utility
3Cited by
18References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2009 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Jul 14, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/385
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Enumerating an expanded bus system in a system. The expanded bus system may include a first bus, a bridge coupled to the first bus, and a second bus coupled to the bridge, where the second bus includes one or more downstream bus ports. One or more of the downstream bus ports may initially be masked. An initial bus enumeration may be performed during system boot, which may not include enumerating the masked bus ports. After the initial bus enumeration, the masked bus ports may be unmasked. An operating system may re-enumerate the bus system, which may include enumerating the no-longer-masked bus ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.