Direct access to local memory in a PCI-E device
US10120832B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2015 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Jan 16, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4221
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method includes communicating between at least first and second devices over a bus in accordance with a bus address space, including providing direct access over the bus to a local address space of the first device by mapping at least some of the addresses of the local address space to the bus address space. In response to indicating, by the first device or the second device, that the second device requires to access a local address in the local address space that is not currently mapped to the bus address space, the local address is mapped to the bus address space, and the local address is accessed directly, by the second device, using the mapping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.