General Purpose I/O in Cyclone 5 SoC

Hello,

I need to stream 2 bit data (from an external ADC) into the FPGA component of the chip. To do this I've been trying to figure out the general purpose input pins on the board. I only see the HSMC pins that come close to offering an input port. Can HSMC be used as GPIO? Is there something I'm missing because I do not see any other way to read the input data.
Any insight would be appreciated!

Thank you.