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SubjectRe: ide-dma & ST-36530A

This is the latest update for via82c586 chipset plus final fix for ide-mod
with ide-dma support. The last report from (maintainer of via82c586.c)
Michel Aubry states that this version if functional and tested.
The TX PRO III VIA based boards are now supported with setting
splitfifo parameters passed for independent channel configuration.

Read the contents of the patch for instructions first or the updated
"via82c586.c" file.

Please report back if this fixes or fails.......

Lastly, I am attempting to file Mark's fingers as the future
IDE-maintainer.

On Tue, 13 Oct 1998, Mark Lord wrote:

> Michael Vogt wrote:
> >
> > Dear Friends
> >
> > I use a Segate ST-36530A (6,5Gb) on a via82c586 (linux 2.1.124 & 125)
> > If I enable ide-dma support, I get strange errors while copying files onto
> > that hd:
> > -----------------------8<----------------------------
> > Oct 8 16:50:22 top kernel: attempt to access beyond end of device
> > Oct 8 16:50:22 top kernel: 03:01: rw=0, want=134223737, limit=3076416
> > Oct 8 16:50:22 top kernel: attempt to access beyond end of device
> > Oct 8 16:50:22 top kernel: 03:01: rw=0, want=134223738, limit=3076416
> > Oct 8 16:50:22 top kernel: attempt to access beyond end of device
> > Oct 8 16:50:22 top kernel: 03:01: rw=0, want=134223737, limit=3076416
> > -----------------------8<----------------------------

There may be a physical limit for disk size and reporting in the kernel.
This potentally breaks my pair of Quantum Eclipse 10.2G drives
that have 19885,16,63 native reporting and may be related to LBA limits in
ide-disk.c. I am still investigating this puzzle.

> ..
> > What do you think ? Should the ST-36530A on the blacklist, or is it a driver

I doubt that the drive is bad, but the current driver was limited to
VIA MVP-3 only.

> > problem ?
>
> Those messages indicate a software bug in the kernel somewhere,
> not a hardware failure.
>
> Dunno what.
> --
> mlord@pobox.com
>
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Cheers,
Andre Hedrick
The IDE-FNG for Linux
The APC UPS Specialist for Linux

http://www.dyer.vanderbilt.edu/server/udma/
http://www.dyer.vanderbilt.edu/server/apcupsd/

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