Date: Wed, 30 Mar 2016 19:47:25 +0200 From: Luigi Rizzo <rizzo@iet.unipi.it> To: freebsd-current <freebsd-current@freebsd.org> Subject: accessing a PCIe register from userspace through kmem or other ways ? Message-ID: <CA%2BhQ2%2BiU4odjhaNicFA4QjvSZR2OZOOy%2BFu4LTqsibdoK4M8zg@mail.gmail.com>
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Hi, I'd like to test the rate at which I can access device registers on a PCIe card, and was wondering whether I need to patch a device driver, or perhaps I can use /dev/kmem once I figure out where the registers are mapped ? thanks luigi -- -----------------------------------------+------------------------------- Prof. Luigi RIZZO, rizzo@iet.unipi.it . Dip. di Ing. dell'Informazione http://www.iet.unipi.it/~luigi/ . Universita` di Pisa TEL +39-050-2217533 . via Diotisalvi 2 Mobile +39-338-6809875 . 56122 PISA (Italy) -----------------------------------------+-------------------------------
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