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Visitor
Visitor
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Registered: ‎10-30-2019

ZYNQ XDMA read and XDMA write simultaneously lead to Blue Screen of Death

Hi,

In the ZYNQ 7015.

I used the XDMA PCIE IP to send datas to PS DDR(through AXI HP interface on PS) from HOST PC.

I used the driver of XILINX (2017Version or 2018Version) on the HOST PC.

when I start the XDMA read or XDMA write singly, it can work.

BUT,when I start XDMA read and XDMA write simultaneously,the HOST PC happen Blue Screen of Death.

 

I want to know if the XDMA PCIE IP and PS DDR support the XDMA read and XDMA write simultaneously?

if support ,should I modify the driver? or do other changes?

 

Thank you very much

Johnwell

 

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Xilinx Employee
Xilinx Employee
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Registered: ‎08-06-2008

Theoretically there shouldn't be an issue. Below are few suggestions from the debug perspective at IP level:

1. Check if the user_lnk_up is still asserted or not.

2. Check the status of ltssm signal. Make sure it is L0.

3. Check if the ready signals on the user side are asserted or not.

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