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chenpingx
Adventurer
Adventurer
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Registered: ‎05-18-2017

VU19P PCIE BRIDGE IP - Host fail to read the AXI-BRAM

Hi, there

I am working on the VU19P with PCIE GEN3 bridge IP. Both PCIE-AXI bridge and AXI-PCIE are needed. Attachment is the detailed configuration and top file. Pls reference. 

Now, the PCIE link is up with GEN3x4. The LSPCI command works fine. The problem is that PCIE-AXI bridge is not working. I try the "devmem2 0xe0300008 w 0x1234", but the read-back value is always 0, just like the following pic. 

chenpingx_0-1614892163907.png

chenpingx_2-1614892495199.png

 

As comparison, I also try same command with PCIE3 with VU440. The data can be written successfully. 

chenpingx_1-1614892451329.png

Moreover, I try to add the ILA to check the status on AXI, but fail. The m_axi_arvalid always keep at 0. Pls help us to solve this issue. thanks

Regards

Ping Chen

2021.3.4

 

 

 

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2 Replies
chenpingx
Adventurer
Adventurer
216 Views
Registered: ‎05-18-2017

I try same configuration for PCIE DMA core. it works. The devmem2 can write data successfully. So, is there any known issue for PCIE BRIDGE IP. thanks

Regards

Ping Chen

2021.3.6

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chenpingx
Adventurer
Adventurer
216 Views
Registered: ‎05-18-2017

Moreover, we also try VU13P PCIE BRIDGE IP. It works as expected. So, why 19P fail? Any clue? thanks

Regards

Ping Chen

2021.3.6

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