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SubjectRe: FS Corruption with VIA MVP3 + UDMA/DMA
On Sat, 9 Aug 2003 17:57:08 +0200
Helge Hafting <helgehaf@aitel.hist.no> wrote:

> I have a pc with a VIA MVP3, that I use as an x-terminal.
> Using dma is not an option, I got the impression that ide
> developers consider the chip so broken they don't want to
> try make that work. That is ok with me, I wouldn't consider
> running anything needing good io performance on that old thing.
>
> What is worse is that 2.6 ide don't work with it at all.
> Booting attempts die early of io errors, sometimes it don't
> even find the root fs superblock, other times dies a little later.
> So it is sort of left behind, running 2.5.69-mm3 which at least works
> in pio mode. The harddisk is a old 240MB thing with debian
> shoehorned onto it.
>
> There is no AGP card in the machine, so AGP is clearly not necessary
> to get io trouble.
>
> Here's the lspci output, if anyone is interested:
> 00:00.0 Host bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3]
> (rev 04) 00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x
> [Apollo MVP3/Pro133x AGP]
> 00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586/A/B PCI-to-ISA
> [Apollo VP] (rev 41)
> 00:07.1 IDE interface: VIA Technologies, Inc. VT82C586/B/686A/B PIPC
> Bus Master IDE (rev 06)
> 00:07.3 Bridge: VIA Technologies, Inc. VT82C586B ACPI (rev 10)
> 00:0a.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX
> [Cyclone] (rev 64)
> 00:0b.0 VGA compatible controller: S3 Inc. ViRGE/DX or /GX (rev 01)
>
> Helge Hafting

Just another data point, for what it's worth.

I've got one of these puppies that works perfectly except I cannot
enable DMA on the CD-RW drive. I normally run a vanilla 2.4.19 kernel,
but it also works fine with the RedHat 8.0 kernel (whatever that is?). I
only have one hard disk at the moment (80GB WD) but before the old one
died, I routinely copied 800 MB files (video) between disks with no
errors. The CD burner works fine at 16X. I'm running an AMD K6-III 350
with a 25 Mhz overclock, rock solid. The MB is a FIC VIA 503+.

A normal load on the machine is a continuous 200KB/sec download on the
cable modem using PAN, XMMS, Firebird, and Sylpheed. XMMS skips are very
rare! Mplayer works great with a few dropped frames on really high res
DIVX video.

So I don't think you can point the finger at the MVP3 chipset.

00:00.0 Host bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3] (rev
04)
00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo
MVP3/Pro133x AGP]
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586/A/B PCI-to-ISA
[Apollo VP] (rev 41)
00:07.1 IDE interface: VIA Technologies, Inc. VT82C586B PIPC Bus Master
IDE (rev 06)
00:07.3 PCI bridge: VIA Technologies, Inc. VT82C586B ACPI (rev 10)
00:09.0 Multimedia audio controller: Yamaha Corporation YMF-724F [DS-1
Audio Controller] (rev 03)
00:0a.0 Ethernet controller: Linksys Network Everywhere Fast Ethernet
10/100 model NC100 (rev 11)
01:00.0 VGA compatible controller: 3Dfx Interactive, Inc. Voodoo Banshee
(rev 03)

/dev/hda:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 9729/255/63, sectors = 156301488, start = 0

I'll be happy to supply any info that can help anyone. I know this
problem has been bugging people for a long time.

--

John
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