公开(公告)号：US11734217B2

公开(公告)日：2023-08-22

申请号：US17644068

申请日：2021-12-13

Applicant: XILINX, INC.

Inventor： Sunita Jain ,  Bharat Kumar Gogada ,  Arjun Vynipadath ,  Meera Bagdai

IPC: G06F13/42 ,  G06F13/40

CPC classification number: G06F13/4221 ,  G06F13/4063 ,  G06F2213/0026

Abstract: Embodiments herein describe using software or firmware to manage the device capability list of a PCIe device. That is, rather than relying on pure hardware to advertise the capabilities of a PCIe device, the embodiments herein permit software or firmware executing on a processor in the PCIe device to manage read and write requests associated with discovering the capabilities of the device and configuring the device.

公开(公告)号：US10783103B1

公开(公告)日：2020-09-22

申请号：US15442528

申请日：2017-02-24

Applicant: Xilinx, Inc.

Inventor： Sunita Jain ,  Bharat Kumar Gogada ,  Ravikiran Gummaluri

IPC: G06F13/28 ,  G06F13/16 ,  G06F13/42 ,  G06F13/38

Abstract: A signature is generated to indicate a direct memory access (DMA) operation involving a transfer, by a DMA engine, of data between a host memory circuit and an endpoint memory circuit of an endpoint processor circuit. First descriptors of the DMA engine are defined relative to the endpoint memory circuit or host memory circuit. A signature is received that indicates that second descriptors have been configured by the endpoint processor circuit. In response to receiving the endpoint signature, the DMA engine is enabled to begin the DMA operation.