Device full memory access through standard PCI express bus
US9804988B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2015 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | May 10, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2213/0026
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of transferring data between a host and a PCI device is disclosed. The method comprises mapping a fixed memory-mapping control block in a host memory of the host to a control register of a memory-mapping unit of the PCI device; mapping a dynamic data-access memory block in the host memory to a default memory block in a memory of the PCI device, wherein the memory-mapping unit translates an address between the dynamic data-access memory block and a memory block in the memory of the PCI device; and dynamically modifying a value in the control register of the memory-mapping unit through the fixed memory-mapping control block such that an address of the dynamic data-access memory block in the host memory is translated to a different address in the memory of the PCI device based on the modified value in the control register of the memory-mapping unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.