Date: Mon, 25 Mar 1996 10:34:26 +1030 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: hyan@vermeer.helios.nd.edu (Hong Yan) Cc: hackers@freebsd.org Subject: Re: write a device driver Message-ID: <199603250004.KAA26083@genesis.atrad.adelaide.edu.au> In-Reply-To: <Pine.SUN.3.91.960324162838.402D-100000@vermeer.helios.nd.edu> from "Hong Yan" at Mar 24, 96 04:31:19 pm
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Hong Yan stands accused of saying: > > I am writing a device driver on FreeBSD, but I don't know how to > bind the device driver to the device, what's the entry point? And what > files I should modify in order to assign the major, minor numbers and let > kernel start the driver for this device. Any kind of direction is > appreciated. It depends on whether you're writing a driver for -current or an earlier version 8) In both cases, you should look at the code for a similar driver, and copy what it does. One day I intend to write a template to go with Eric H's DDWG. For non -current systems, you will want to modify /sys/i386/i386/conf.c to add your driver to the appropriate devsw struct, and /sys/i386/conf/files.i386 to tell config(8) about your new files. If this isn't enough information, feel free to mail me and I'll be happy to walk you through the process. > --Karen -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] Collector of old Unix hardware. "Where are your PEZ?" The Tick [[
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