According to the RapidIO MegaCore Function User
Guide, any of the following three link protocol violations
causes the RapidIO IP core input port to transition to the Input
Error Stopped state, setting the IN_ERR_STOP bit
of the Port 0 Error and Status CSR (offset 0x158):
Unexpected packet-accepted control symbol
Unexpected packet-retry control symbol
Unexpected packet-not-accepted control symbol
However, these conditions do not affect the input port. Instead,
they cause the RapidIO output port to transition to the Output
Error Stopped state, and set the OUT_ERR_STOP of the Port
0 Error and Status CSR.
This issue has no workaround. Ensure you use the explanation in this erratum to interpret the values in the Port 0 Error and Status CSR.
This issue is fixed in version 17.0 of the RapidIO IP Core User Guide.