How to do serdes pin swapping for Ftile PCIe IP

[Zefu]

Hello, 

We have purchased a few AGFB027 FPGA dev kits, and are testing the F-Tile PCIe IP. The schematic shows that the PCIe serdes pins connected to the QSFP port have 3 pairs of serdes swapped in polarity for the purpose of routing. 

I tried to do the re-swapping of polarity in the logic design by connecting the 'p' pin to the 'n' port of the IP. However, quartus fitter reports error when I do that. 

I opened the PCIe IP configuration, and couldn't find any place that allows me to configure the re-swapping of serdes pins. 

Can anyone tells me how the swapping of serdes pins can be done properly?

Error (22243): Cannot place the block FpgaPcieWrapper_inst|fpw_Intel_Ftile_ControllerWrapper_inst|fpw_Intel_Ftile_Pcie_Controller_4x4_upstream_inst|pcie_avst_f_0|pcie_hip_top_f_inst|pcie_hip_bb_f_inst|f_ux_inst5|x_bb_f_ux_rx at location fgt_q1_ch3_rx because port xcvr_data0_link connects to block FpgaPcieWrapper_inst|fpw_Intel_Ftile_ControllerWrapper_inst|fpw_Intel_Ftile_Pcie_Controller_4x4_upstream_inst|pcie_avst_f_0|pcie_hip_top_f_inst|pcie_hip_bb_f_inst|f_pcie_inst and port xcvr_data_link[5] but the port at this location cannot connect to such a port.

[Wincent_Altera]

Hi Zefu,

We sincerely apologize for the inconvenience caused by the delay in addressing your Forum queries.

Due to an unexpected back-end issue in our system, your Forum case, did not reach us as intended

Answering your question,

The P/N polarity inversion is possible by register setting but not QSF assignment.

The steps to do that is described in the PMA/FEC Direct PHY IP 3.14.2.1.1. Direct Register Method Examples

Hope that is not too late to clarifed and able to help you move forward.

Regards,

Wincent_Intel

[Wincent_Altera]

Hi,

We do apologize for the previous system down issue causing your question been delay in addressing.

Hope my previous response is not too late in order to solve your queries.

I wish to follow up with you about this case. Do you have any further questions on this matter ?

​​​​​​​Else I would like to have your permission to close this forum ticket.

Regards,

Wincent_Intel

[Wincent_Altera]

Hi

I believe, my previous rely had address your question.

As we do not receive any response from you on the previous question/reply/answer that we have provided. Please login to ‘https://supporttickets.intel.com’, view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you.

Regards,

Wincent_Altera