Mapping a virtual address to PCI bus address
US7941568B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2008 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Mar 1, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/387
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Registering memory space within a data processing system is performed. One or more open calls are received from an application to access one or more input/output (I/O) devices. Responsive to receiving the one or more open calls, one or more I/O map and pin calls are sent in order to register memory space for the one or more I/O devices within at least one storage area that will be accessed by the application. At least one virtual I/O bus address is received for each registered memory space of the one or more I/O devices. At least one I/O command is executed using the at least one virtual I/O bus address without intervention by an operating system or operating system image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.