Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

PCIe freezing

Hi, I have strange problem with PCIe IP. I have a custom board with ArriaGX and PCIe instantiated using MegaCore flow with AvalonST interface. The PCIe works (there are some DMAs running, targe...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Martin,

even if you don’t have to transmit anything I would suggest that you at least design a detector to see whether any unsupported request is handed over on the rx port. Those requiring a completion should be properly managed by your design, even in the cut-down minimum debugging version.

I hope your configuration registers are in a non-prefetchable BAR.

Another issue could be the PC driver. Are you sure the hangups are not a driver’s fault?