Reset FIFO from NIOS

Hi!

I have a sopc built system with a fifo, dma and the nios processor. With this I am transferring data from the fifo (that receives data from a custom made data generator) to sdram and further through ethernet. In software, I want to be able to run a system reset that resets the nios processor AND the fifo buffer. I have managed to reset the nios, but the fifo then contains "old" data after the reset. Is it possible in any way to empty the fifo buffer?

Thanks in advance for any answers! :-)