On Wed, 11 Feb 2009, Andriy Gapon wrote:
has anybody tried anything in the area of userland drivers on FreeBSD? I
mean a driver for something sufficiently simple and standalone and not
driven by interrupts. E.g. some sort of a watchdog driver that simply
reads/writes some io registers from time to time.
Brute-force and a very bad way is to go through /dev/mem, /dev/io, /dev/pci,
but I am thinking about something that would allow to plug into newbus
framework from userland.
I recently had a related question from a colleague about implementing a
synthetic USB device in userspace so that software part development can occur
concurrently with hardware part development.
Robert N M Watson
Computer Laboratory
University of Cambridge
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