Date: Wed, 1 Oct 1997 20:56:00 -0700 (PDT) From: "Jamil J. Weatherbee" <jamil@counterintelligence.ml.org> To: hackers@freebsd.org Subject: Device drivers Message-ID: <Pine.BSF.3.96.971001204846.1348A-100000@counterintelligence.ml.org>
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I've taken a look at the source code to a few device drivers and run the example scripts for Isa stuff, I have a general feeling of what needs to be in one and how it operates however I simply don't feel I have enough information (or a well enough documented example) to feel confident writing one myself, does anyone have a document/FAQ no matter how small describng the required functions/tables/probing /irq setup etc. so I would know what exactly I am doing. A line by line walk through of even a cheeseball driver would be greatly appreciated or perhaps even a pointer to a well documented driver (My standard is to have a comment on every line of code, that's what I mean by "well documented"), but preferably not to lengthy where I am goin to mostly be looking at the nitty gritty of a device I don't know about or understand. Someone passed me a driver for a stepper motor, the idea of what it is doing with the physical hardware is easy for me since I deal with that stuff all the time, unfortunately there are hardly no comments.
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