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To: lev@FreeBSD.org
Subject: Re: Intel D2500CC motherboard and strange RS232/UART behavior
In-reply-to: <1428566376.20130407234355@serebryakov.spb.ru>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
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Date: Sun, 07 Apr 2013 20:15:01 +0000
Message-ID: <5847.1365365701@critter.freebsd.dk>
Cc: Adrian Chadd <adrian@freebsd.org>, freebsd-current@freebsd.org
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In message <1428566376.20130407234355@serebryakov.spb.ru>, Lev Serebryakov writ
es:

>It  doesn't  look  so.  And  uart1  and  uart3  doesn't have interrupt
>according to `vmstat -i' (but share irq4 according to boot messages).

Ohh, there you go...

Interrupt sharing on ISA requires special magic...

With sio(4) one could hardcode interrupt sharing with hints.flags,
but with uart(4) I think you have to go through puc(4) to do it.

Not sure how that that should work in a case like this...

-- 
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.