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Date:      Fri, 7 May 1999 06:05:49 -0600 (MDT)
From:      Doug Russell <drussell@saturn-tech.com>
To:        Brian Feldman <green@unixhelp.org>
Cc:        Lee Cremeans <lcremeans@erols.com>, current@FreeBSD.ORG
Subject:   Re: IDE strangeness
Message-ID:  <Pine.BSF.3.96.990507054450.2524A-100000@calvin.saturn-tech.com>
In-Reply-To: <Pine.BSF.4.10.9905070737120.86246-100000@janus.syracuse.net>

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On Fri, 7 May 1999, Brian Feldman wrote:

> > > 2. wd supports UDMA on my chipset, but won't enable any kind of DMA on my
> > >    new Seagate, which does UDMA2 fine with ATA
> 
> Here's what I've got:
> wdc0 at port 0x1f0-0x1f7 irq 14 flags 0xa0ffa0ff on isa0
> wd0: wdsetmode() setting transfer mode to 42
> wdc0: unit 0 (wd0): <ST36422A>, 32-bit, multi-block-16
> wd0: 6103MB (12500460 sectors), 13228 cyls, 15 heads, 63 S/T, 512 B/S
> wd0: ATA INQUIRE valid = 0007, dmamword = 0407, apio = 0003, udma = 0007

Hmmmm..  I just started playing with 4.0-CURRENT the other day, and I've
been using a nice SCSI disk, however, when I connected a couple of Western
Digital IDEs, I had a couple strange problems:

Same controller in an Asus P5A-A, K6-III 400 MHz @ 100x4...

/kernel: ide_pci0: <Acer Aladdin IV/V (M5229) Bus-master IDE controller>
at device 15.0 on pci0

wdc0 at 0x1f0-0x1f7 irq 14 flags 0xa0ffa0ff on isa
wdc0: unit 0 (wd0): <WDCAC420400D>, 32-bit, multi-block-16
wd0: 19470MB (39876480 sectors), 39560 cyls, 16 heads, 63 S/T, 512 B/S

Note there is no DMA on there either...  I couldn't get either the 13 or
20 Gig to do DMA, even though I have done it before on -STABLE.

The other oddity with early AM yesterday's world & kernel was:

wdc0 at port 0x1f0-0x1f7 irq 1 drq 0 flags 0xa0ffa0ff on isa0
wdc0: unit 0 (wd0): <WDC AC420400D>, DMA,32-bit, multi-block-16
wd0: 19470MB (39876480 sectors), 39560 cyls, 16 heads, 63 S/T, 512 B/S
wdc0: interrupting at irq 1

What gives with the irq 1?  All sorts of things were showing up on irq 1,
even though they were actually configured on 14, 15, 5 (for sio2), etc...

I thought this was something funky in the bus changes, and may be gone
now, I haven't tried the IDE disks again on anything since, but other
things (like sio2) are back to normal on the last 5 or 6 builds.

Boy these K6-IIIs are FAST...  My worldstone is under 1h WITHOUT turning
on softupdates, no async mounting, no noatime, no -j, and src and obj are
on the same (/usr) partition of one SCSI disk!

Later......						<Doug>




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