Critical Issue
Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 21.1 and 21.2, you may experience an unresponsive PCI Express* link if you have the Transaction Layer Configuration Space Interface enabled in your Intel® L-/H-Tile Avalon® streaming IP for PCI Express* configured as a Gen3x16 link. The problem does not impact all compilation results as it is due to a place/route dependency.
The unresponsive PCI Express* link may happen after a power-on configuration operation or after a reconfiguration operation.
Additional failure symptoms for the issue described are:
- The Transaction Layer Configuration Space Interface (tl_cfg_*) ports are stuck at a fixed value.
- No DMA operations happen between the root port and the end-point
- Performing a warm reset in the host system allows the end-point to recover its functionality
A patch is available to fix this problem for the Intel® Quartus® Prime Edition Pro Software version 21.1 and 21.2.
Download and install Patch 0.41 for the Intel® Quartus® Prime Edition Pro Software version 21.1 or Patch 0.05 for the Intel® Quartus® Prime Edition Pro Software version 21.2 from the appropriate link below:
(To download the .run file, right-click on the above link and choose “Save link as”)
Intel® Quartus® Prime Edition Pro Software version 21.1 patch
- Download patch 0.41 for Windows (.exe)
- Download patch 0.41 for Linux (.run)
- Download the Readme for patch 0.41 (.txt)
Intel® Quartus® Prime Edition Pro Software version 21.2 patch
- Download patch 0.05 for Windows (.exe)
- Download patch 0.05 for Linux (.run)
- Download the Readme for patch 0.05 (.txt)
This problem is fixed starting with the Intel® Quartus® Prime Pro Edition Software version 21.3.