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PCIe IP with 2 VCs, Vendor ID only on VC0?

Altera_Forum
Honored Contributor II
1,003 Views

Hi All, 

 

I have a designed an SOC with a PCIe RootPort. It works fine. I just changed the PCIe IP to a 2 VC version. 

As a simple test of the second VC I tried to read the vendor's ID but I get no response from the IP. It responds 

fine on the first VC. Is that the way it supposed to work? I get the same results in simulation. 

 

Any ideas? 

 

Thanks, 

S.
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2 Replies
Altera_Forum
Honored Contributor II
89 Views

We have been working on a similar concept and found that tx credits are not issued by Altera's IP for second VC. Hence, IP is not ready to receive tlp's on second VC.

Altera_Forum
Honored Contributor II
89 Views

VC1 is not supported. The PCIe core only supports 1 Virtual Channel (VC0).

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