Dynamically changing configuration of data processing unit when connected to storage device or computing device
US11256644B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2019 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Sep 4, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2213/0026
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one example, a data processing unit (DPU) includes a host unit interface for communicatively coupling to second device via a serial input/output (I/O) connection, and a control unit implemented in circuitry and configured to initially configure the host unit interface of a data processing unit to operate in endpoint mode, determine that the host unit interface of the data processing unit is to switch from operating in the endpoint mode to root complex mode, in response to determining that the host unit interface is to switch from operating in the endpoint mode to the root complex mode: configure the host unit interface to operate in the root complex mode, and send data to an I/O expander unit to cause the I/O expander unit to issue a reset signal to the second device, the second device being configured to operate in the endpoint mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.