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To: "M. Warner Losh" <imp@bsdimp.com>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Sun, 20 Jun 2004 12:20:57 MDT."
             <20040620.122057.84501606.imp@bsdimp.com> 
Date: Sun, 20 Jun 2004 21:42:11 +0200
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cc: arch@freebsd.org
cc: marcel@xcllnt.net
Subject: Re: [REVIEW] move tty lock/initial up in the stack 
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In message <20040620.122057.84501606.imp@bsdimp.com>, "M. Warner Losh" writes:
>: 
>: PS: I just added cyclades to the list of references there. Feel free
>:     to add more or replace this with a better one.
>
>OK.  I've added a few of my own notes to the mix.  I think that
>fleshing out the notes a little more might be useful.  It looks like
>there are many granularities for the knowning about which uarts
>generated.  It looks like on stallion cards, for example, you know
>which pannel generated an interrupt, but that the pannel might have 4
>different multi-port uarts you have to then go query.

I put a cautionary note about sync devices there.  I would really
advocate not going anywhere near sync modes unless we have a really
compelling reason to.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.