mfi link speed?

[matt]

There may be an obvious answer, but how do I determine whether or not 
SATA III drives are negotiating at full speed on an m1015?
When I used the mps firmware for this card, I did indeed see correct 
link speeds as the da devices attached.
I have mfip loaded, but its devices seem to be hardcoded to present with 
150MB/s transfers.
If it matters, I'm using "real" JBOD with mfisyspd devices.
Also, can I tell if disk cache is enabled?

Thanks!

Matt