Patents by Inventor Chuck Tuffli

Chuck Tuffli has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Detection of a DMA (direct memory access) memory address violation when testing PCIE devices
    Patent number: 11853179
    Abstract: A method for detecting a Direct Memory Access (DMA) memory address violation when testing PCIe devices is disclosed. The method for detecting a DMA memory address violation when testing PCIe devices applies to unintentional and intentional accesses of memory space outside of an area in memory specified by the device driver developed for the device.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: December 26, 2023
    Assignee: TELEDYNE LECROY, INC.
    Inventors: Aaron Masters, Kevin Lemay, Chuck Tuffli
  • Method to test direct memory access (DMA) address capabilities at high address values
    Patent number: 11386028
    Abstract: A method for detecting a Direct Memory Access (DMA) address capability at high address values when testing PCIe devices is disclosed. The method includes enabling an input/output (I/O) memory management unit (IOMMU); remapping physical addresses to virtual addresses at a high end of an address range; adding a peripheral component interconnect express (PCIe) device; and mapping physical memory addresses to high value memory addresses.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: July 12, 2022
    Assignee: TELEDYNE LECROY, INC.
    Inventors: Aaron Masters, Kevin Lemay, Chuck Tuffli
  • METHOD TO TEST DIRECT MEMORY ACCESS (DMA) ADDRESS CAPABILITIES AT HIGH ADDRESS VALUES
    Publication number: 20200311002
    Abstract: A method for detecting a Direct Memory Access (DMA) address capability at high address values when testing PCIe devices is disclosed. The method includes enabling an input/output (I/O) memory management unit (IOMMU); remapping physical addresses to virtual addresses at a high end of an address range; adding a peripheral component interconnect express (PCIe) device; and mapping physical memory addresses to high value memory addresses.
    Type: Application
    Filed: March 26, 2020
    Publication date: October 1, 2020
    Inventors: Aaron Masters, Kevin Lemay, Chuck Tuffli