Date: Wed, 02 Nov 2005 13:35:03 +0800 From: Dinesh Nair <dinesh@alphaque.com> To: Julian Elischer <julian@elischer.org> Cc: freebsd-hackers@freebsd.org, Scott Long <scottl@samsco.org> Subject: Re: locking in a device driver Message-ID: <43685007.7000506@alphaque.com> In-Reply-To: <4367E920.1020001@elischer.org> References: <4360B8EE.4070605@alphaque.com> <4360DD7B.20900@samsco.org> <4361044B.50807@alphaque.com> <20051027.205250.55834228.imp@bsdimp.com> <4361E3E0.4090409@alphaque.com> <43676121.4030801@alphaque.com> <436791ED.8010808@samsco.org> <4367AA8D.3060506@alphaque.com> <4367BBDB.7020005@elischer.org> <4367C07C.1040900@alphaque.com> <4367C726.8070405@samsco.org> <4367CCBA.9040506@alphaque.com> <4367E920.1020001@elischer.org>
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On 11/02/05 06:16 Julian Elischer said the following: > also, why do you need a pseudo device AND a device? The device driver > can do all the things you have > suggested on its own. this is so userland apps wont need to change when different devices are used. the pseudo device is the front for a number of real device drivers running different devices from a quad-span E1/T1 line card to 4-port FXS/FXO line cards. each of these cards are different, but present the same device interface to the userland app via the pseudo device driver. -- Regards, /\_/\ "All dogs go to heaven." dinesh@alphaque.com (0 0) http://www.alphaque.com/ +==========================----oOO--(_)--OOo----==========================+ | for a in past present future; do | | for b in clients employers associates relatives neighbours pets; do | | echo "The opinions here in no way reflect the opinions of my $a $b." | | done; done | +=========================================================================+
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