How to communicate with FPGA from linux?

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 ?

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0 Former Member over 12 years ago

Since there is a high chance that your driver never make in into mainline there is always UIO which also uses mmap():
https://www.kernel.org/doc/htmldocs/uio-howto.html
http://www.zedboard.org/content/interrupt-handler-kernel-module
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0 Former Member over 12 years ago in reply to Former Member

Thank you for the reply!
Did you mean that using mmap() is better than writing a device driver module for communicating with FPGA from linux ?In that case please can you provide some example or use case on how the UIO or mmap() is used to establish communication between ARM linux and FPGA?
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0 Former Member over 12 years ago in reply to Former Member

Thank you for the reply!
Did you mean that using mmap() is better than writing a device driver module for communicating with FPGA from linux ?In that case please can you provide some example or use case on how the UIO or mmap() is used to establish communication between ARM linux and FPGA?
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