10. Selftest

1. For selftest, connect nf2c0 to nf2c1 and nf2c2 to nf2c3 using an RJ45.

2. Ensure the nf2cx interfaces are up. You can check this by using the command :

ifconfig

3. If you can see the 4 interfaces (nf2c0, nf2c1, nf2c2, nf2c3) in the list, that means that the interfaces are up.

 4. If the 4 interfaces can't be seen in the list, then they have to be pulled up by using the command :
ifconfig nf2c0 up
ifconfig nf2c1 up
ifconfig nf2c2 up
ifconfig nf2c3 up
or for i in `seq 0 3`; do ifconfig nf2c$i up; done
5. Load self-test bitfile

nf_download ~/netfpga/bitfiles/selftest.bit

6. Run Selftest
a - If you have the SATA cable connected, then use the command :

~/netfpga/projects/selftest/sw/selftest

b - If you do not have the SATA cable connected, then use the command :

~/netfpga/projects/selftest/sw/selftest -n

c - To get the continuous output, add a -c to the above commands. The advantage of getting a continuous output is that you can correct the errors (described later on) in real time.

7. While running the selftests, I got 2 errors. PHY Test failed and DMA Test failed. I corrected the errors as follows :
A - PHY Test Failure : PHY Test failure occurs due to improper connection between the ports. Run the selftest in continuous mode by using the command : ~/netfpga/projects/selftest/sw/selftest -n -c. Now under PHY Test, check if the packets being are going to BAD or GOOD. If the packets are going to GOOD, then it is fine otherwise you would notice that there is a no link appearing for that port. The ports of the NetFPGA are very sensitive. So even though it appears that the ports are connected, they may actually not be connected. So readjust the connections till all the packets go into GOOD. This would result in passing of the PHY Test.

 B - DMA Test Failure : This may result due to multiple reasons, vis-a-vis, the following :
1. Memory hasn't been allocated for the NetFPGA (Article 2 of this blog)
2. The nf2cX interfaces haven't been turned up (Refer article 9 to turn up the interfaces)
3. The CPCI hasn't been reprogrammed. So try reprogramming the CPCI using the command : /usr/local/sbin/cpci_reprogram.pl --all