using axi bridge

So i am pretty new to the SoC device and the hps. So I understand that trough the AXI bridge I would be able to access any Avalon slave. I want to put data into a on-chip fifo from the hps. So i connect the fifo slave to the AXI master. Now in niosII I would use the function altera_avalon_write_fifo() to write data into the fifo. But i am not sure if i can use that from the hps. Do i need to find the library and put it on the processor. can i use that library even though its an avalon library. So how would i go about writing data into the fifo?