Hi. I am attempting to write a linux kernel module, which will be used to send data from NVIDIA (root port) to a custom FPGA based end point. So far, I am writing data to BAR0 using memcpy() in user space to send data to the end point. However, this gives me very poor throughput. I created a forum…

How to Carry out DMA transfer when sending data using PCIe from NVIDIA Root Port to a custom end point

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Xavier

Manikanta July 27, 2023, 9:23am 13

Hi,

Custom Endpoint hardware should have DMA support and get the DMA programming guidelines from vendor. Then you have to write a client driver by following the guidelines. This is not related to Tegra.

Thanks,
Manikanta

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How to Carry out DMA transfer when sending data using PCIe from NVIDIA Root Port to a custom end point

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