Date: Tue, 5 Apr 2005 22:40:11 GMT From: Dmitry Pryanishnikov <dmitry@atlantis.dp.ua> To: freebsd-i386@FreeBSD.org Subject: Re: i386/78929: atapicam prevents boot, system hangs Message-ID: <200504052240.j35MeBCQ073334@freefall.freebsd.org>
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The following reply was made to PR i386/78929; it has been noted by GNATS.
From: Dmitry Pryanishnikov <dmitry@atlantis.dp.ua>
To: freebsd-gnats-submit@FreeBSD.org, harrycoin@quietfountain.com
Cc:
Subject: Re: i386/78929: atapicam prevents boot, system hangs
Date: Wed, 06 Apr 2005 01:35:30 +0300
Hello!
I've got another piece of information to add. I've repeated experiments
with the
NEC DVD RW ND-3520A drive. Results are very close to AOpen CRW5232,
except that
solid system hang doesn't take forever - system boot continues in
several minutes,
giving the possibility to capture all relevant information. Again, on
ICH4 ATAPICAM
initializes normally:
ftp://external.atlantis.dp.ua/FreeBSD/PR/78929/dmesg.NEC.ICH4
while on Promise Ultra 100 TX2 it will take several minutes to get to
/sbin/init,
and then ATAPICAM will retry attachment every minute (and doesn't
succeed - /dev/cd0
doesn't appear while /dev/acd0 does):
ftp://external.atlantis.dp.ua/FreeBSD/PR/78929/dmesg.NEC.Promise
My conclusion: there is some (timing?) problem in ATAPICAM
initialization code path, which luckily doesn't manifest itself on ICH4
(or if drive is in PIO mode),
but manifests on Promise Ultra with ATAPI drive in UDMA mode.
Sincerely, Dmitry
--
Atlantis ISP, System Administrator
nic-hdl: LYNX-RIPE
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