ATA/IDE: dmaproc error 14 testers wanted!

ATA/IDE: dmaproc error 14 testers wanted!

[Andre Hedrick]

If anyone is suffering from the dreaded "dmaproc error 14: unsupported"
error and want to test a code that could get you out of that deadlock
please speak up.

Basically this is an Intel 440BX PIIX4 issues, but the solution is global
and should work for all cases.

Regards,

Andre Hedrick
CTO Timpanogas Research Group
EVP Linux Development, TRG
Linux ATA Development

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Re: ATA/IDE: dmaproc error 14 testers wanted!

[Mohammad A. Haque]

This isnt the same as "ide_dmaproc: chipset supported ide_dma_timeout
func only: 14" is it? This was on a PIIX4 w/ test11-pre5. I've since
upgraded to test11-pre7 and the problem hasn't surfaced again.

Andre Hedrick wrote:
> 
> If anyone is suffering from the dreaded "dmaproc error 14: unsupported"
> error and want to test a code that could get you out of that deadlock
> please speak up.
> 
> Basically this is an Intel 440BX PIIX4 issues, but the solution is global
> and should work for all cases.
> 
> Regards,
> 
> Andre Hedrick
> CTO Timpanogas Research Group
> EVP Linux Development, TRG
> Linux ATA Development
> 
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> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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-- 

=====================================================================
Mohammad A. Haque                              http://www.haque.net/ 
                                               mhaque@haque.net

  "Alcohol and calculus don't mix.             Project Lead
   Don't drink and derive." --Unknown          http://wm.themes.org/
                                               batmanppc@themes.org
=====================================================================
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Re: ATA/IDE: dmaproc error 14 testers wanted!

[Ion Badulescu]

On Sat, 18 Nov 2000 12:23:05 -0800 (PST), Andre Hedrick <andre@linux-ide.org> wrote:
> 
> If anyone is suffering from the dreaded "dmaproc error 14: unsupported"
> error and want to test a code that could get you out of that deadlock
> please speak up.
> 
> Basically this is an Intel 440BX PIIX4 issues, but the solution is global
> and should work for all cases.

Interestingly enough, I get it on a VIA MVP3 with 2.2.18pre + bkz's patch.
Since it's eaten two filesystems by now, I'm not overly eager to play
with it again... On a second thought though, I'd rather play with it now
in a controlled environment, so feel free to send the patch my way.

If you want details, just ask.

Thanks,
Ion

-- 
  It is better to keep your mouth shut and be thought a fool,
            than to open it and remove all doubt.
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Re: ATA/IDE: dmaproc error 14 testers wanted!

[Andre Hedrick]

It is on kernel.org and the README tells you what to do to enable the stub
in ide-dma.c  If it works let me know!

Cheers,

Andre Hedrick
CTO Timpanogas Research Group
EVP Linux Development, TRG
Linux ATA Development

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ATA-4, ATA-5 TCQ status

[Sasi Peter]

Hi!

I would like to ask if the tagged command queueing capability in the
decent ATA standards is utilized in the linux IDE driver (2.2 2.2ide
patches, or 2.4 maybe...)?

Another question, a little bit offtopic is if anybody on this list is able
to point me to some pci UltraATA controller card, which has more than 2
channels (more than 4 drives w/o cascade magic) (preferrably 6 or 8
channels)? If the exists one, I do not need no HW RAID or anything like
that... I only need a lot of channels, in only one PCI slot.
There have been a lot of rant around here, and why I am addressing Andre
personally too is that in that debate his stated, that because such cards
exist, IDE can fall into line with SCSI in drives possible / PCI slot.

Your help is very much appreciated,

-- 
SaPE - Peter, Sasi - mailto:sape@sch.hu - http://sape.iq.rulez.org/


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Re: ATA-4, ATA-5 TCQ status

[Jens Axboe]

On Mon, Nov 27 2000, Sasi Peter wrote:
> Hi!
> 
> I would like to ask if the tagged command queueing capability in the
> decent ATA standards is utilized in the linux IDE driver (2.2 2.2ide
  ^^^^^^
> patches, or 2.4 maybe...)?

I hope that is supposed to be 'recent', because with the current TCQ
implementation listed in the specs Linux might as well not support it :)
It's simply not worth it.

-- 
* Jens Axboe <axboe@suse.de>
* SuSE Labs
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Re: ATA-4, ATA-5 TCQ status

[Sasi Peter]

On Mon, 27 Nov 2000, Jens Axboe wrote:

> > I would like to ask if the tagged command queueing capability in the
> > decent ATA standards is utilized in the linux IDE driver (2.2 2.2ide
>   ^^^^^^
> > patches, or 2.4 maybe...)?
> I hope that is supposed to be 'recent', because with the current TCQ

If you think I should have...

> implementation listed in the specs Linux might as well not support it :)
> It's simply not worth it.

But seriously, how come?

I thought they just somewhat like copied the SCSI implementation...

PS: Anybody knowing about a multi (>2) channel UATA host adapter?

-- 
SaPE - Peter, Sasi - mailto:sape@sch.hu - http://sape.iq.rulez.org/


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Re: ATA-4, ATA-5 TCQ status

[Jens Axboe]

On Mon, Nov 27 2000, Sasi Peter wrote:
> > implementation listed in the specs Linux might as well not support it :)
> > It's simply not worth it.
> 
> But seriously, how come?
> 
> I thought they just somewhat like copied the SCSI implementation...

I wish they would have, and based it on atapi. But they didn't...
Basically it requires you to poll for completion of tags with
a service command.

-- 
* Jens Axboe <axboe@suse.de>
* SuSE Labs
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Re: ATA-4, ATA-5 TCQ status

[Andre Hedrick]

On Mon, 27 Nov 2000, Jens Axboe wrote:

> On Mon, Nov 27 2000, Sasi Peter wrote:
> > Hi!
> > 
> > I would like to ask if the tagged command queueing capability in the
> > decent ATA standards is utilized in the linux IDE driver (2.2 2.2ide
>   ^^^^^^
> > patches, or 2.4 maybe...)?
> 
> I hope that is supposed to be 'recent', because with the current TCQ
> implementation listed in the specs Linux might as well not support it :)
> It's simply not worth it.

Exactly, Jens has seen the ugly beast because I have worked on coding it.
I am working to get IBM to change the method of doing this to make it
sane, but its not now.

Cheers,

Andre Hedrick
CTO Timpanogas Research Group
EVP Linux Development, TRG
Linux ATA Development

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Re: ATA-4, ATA-5 TCQ status

[Sasi Peter]

On Mon, 27 Nov 2000, Jens Axboe wrote:

> On Mon, Nov 27 2000, Sasi Peter wrote:
> > > implementation listed in the specs Linux might as well not support it :)
> > > It's simply not worth it.
> > But seriously, how come?
> > I thought they just somewhat like copied the SCSI implementation...
> I wish they would have, and based it on atapi. But they didn't...
> Basically it requires you to poll for completion of tags with a
> service command.

On Sun, 26 Nov 2000, Andre Hedrick wrote:
> On Mon, 27 Nov 2000, Jens Axboe wrote:
> > On Mon, Nov 27 2000, Sasi Peter wrote:
> > > I would like to ask if the tagged command queueing capability in the
> > > decent ATA standards is utilized in the linux IDE driver (2.2 2.2ide
> >   ^^^^^^
> > > patches, or 2.4 maybe...)?

Ok, so anybody knows a multichannel adapter? At least 4 channels?
Andre? Where do I get one? Where does the ATA revolution start?

-- 
SaPE - Peter, Sasi - mailto:sape@sch.hu - http://sape.iq.rulez.org/


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