07-27-2018 04:17 PM
I am attempting to configure a QDMA IP block for Tandem PROM configuration, but there is either a bug in the customization interface or it is not yet supported for my device (XCKU15P).
I have previously configured an XDMA IP block for Tandem PROM configuration of this same device, and it works in hardware. When I attempt to configure the QDMA IP with the same settings, the "Tandem Configuration or Partial Reconfiguration" drop-down menu is always grayed-out at the bottom (see attached image).
The latest QDMA documentation (PG302) does not mention any limitations on the Tandem Configuration setting, but no matter what combination of changes I make to the customization the Tandem configuration never becomes available. The only change is that when I select PCIe Block Location X1Y0 the "Tandem Configuration or Partial Reconfiguration" drop-down menu gets wider, implying that it is prepared to offer choices but it remains unselectable.
Please advise on whether Tandem Configuration is supported within the QDMA IP, and if so when the customization interface bug will be repaired.
Kind Regards, Matt Keener
07-30-2018 09:26 AM
01-11-2019 02:14 AM
I'm currently using QDMA in our project and we are very worried about the non supported Tandem function...
In the new vivado release 2018.3 and in the QDMA v3.0 document, there is not mention about that Tandem function is not working!!!
Do you have more info about that?
01-23-2019 12:09 PM - edited 01-24-2019 08:09 AM
Tandem Configuration support for the QDMA version of the PCIe IP core is in the queue (no pun intended) for 2019. We plan on starting with our u200 and then u250 Alveo acceleration boards, then expanding to support more devices. I cannot guarantee an exact release/date as priorities must shift to meet demand and available engineering resources, but our hope is to have initial support in 2019.1 -- these plans are subject to change. This item must be scheduled alongside things like streaming core and DMA core support for newer UltraScale+ devices and base Versal support.
01-31-2019 10:51 AM
Hi David, thanks for the reply.
Given the delay on that feature availability, it would be appreciated if PG302 were updated to mention that Tandem is not yet supported for certain devices. The Tandem Configuration section of the "Customizing and Generating the Subsystem" section or the "Minimum Device Requirements" section seem like reasonable places to include a note on the currently supported devices.
01-31-2019 02:51 PM
I can file a Change Request to get the documentation updated with respect to tandem support.