I've a software application ,which I'll run on linux environment on zynq.It has to send some data to PL block ,where some computation is done and result is fed back to s/w application on linux.So I want to know how to communicate with PL(FPGA) from linux.I know that communication between PS and PL block happens through axi_gpio port ,but important thing to note is these gpio drivers are provided only for standalone application ,I can't use these gpio drivers from linux ,So how do I send data to PL block ?