* More ATA corner cases
@ 2006-08-16 12:39 Alan Cox
2006-08-16 12:27 ` Erik Mouw
` (2 more replies)
0 siblings, 3 replies; 8+ messages in thread
From: Alan Cox @ 2006-08-16 12:39 UTC (permalink / raw)
To: jgarzik, linux-ide
Any objection to me adding a new cable type for "40 wire ATA66 capable"
to indicate the laptop vendor has been sneaky and we should do full UDMA
ranges regardless of drive or other controller reporting.
Alan
^ permalink raw reply [flat|nested] 8+ messages in thread* Re: More ATA corner cases
2006-08-16 12:39 More ATA corner cases Alan Cox
@ 2006-08-16 12:27 ` Erik Mouw
2006-08-16 22:50 ` Mark Lord
2006-08-16 22:55 ` Jeff Garzik
2 siblings, 0 replies; 8+ messages in thread
From: Erik Mouw @ 2006-08-16 12:27 UTC (permalink / raw)
To: Alan Cox; +Cc: jgarzik, linux-ide
On Wed, Aug 16, 2006 at 01:39:22PM +0100, Alan Cox wrote:
> Any objection to me adding a new cable type for "40 wire ATA66 capable"
> to indicate the laptop vendor has been sneaky and we should do full UDMA
> ranges regardless of drive or other controller reporting.
Makes sense, lots of laptops do this.
Erik
--
+-- Erik Mouw -- www.harddisk-recovery.com -- +31 70 370 12 90 --
| Lab address: Delftechpark 26, 2628 XH, Delft, The Netherlands
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: More ATA corner cases
2006-08-16 12:39 More ATA corner cases Alan Cox
2006-08-16 12:27 ` Erik Mouw
@ 2006-08-16 22:50 ` Mark Lord
2006-08-17 0:38 ` Alan Cox
2006-08-16 22:55 ` Jeff Garzik
2 siblings, 1 reply; 8+ messages in thread
From: Mark Lord @ 2006-08-16 22:50 UTC (permalink / raw)
To: Alan Cox; +Cc: jgarzik, linux-ide
Alan Cox wrote:
> Any objection to me adding a new cable type for "40 wire ATA66 capable"
> to indicate the laptop vendor has been sneaky and we should do full UDMA
> ranges regardless of drive or other controller reporting.
Good. I'll need that feature for a little mini-ITX box here as well.
It uses a *really short* 40W cable for UDMA4 operation.
Cheers
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: More ATA corner cases
2006-08-16 22:50 ` Mark Lord
@ 2006-08-17 0:38 ` Alan Cox
2006-08-17 0:52 ` Mark Lord
0 siblings, 1 reply; 8+ messages in thread
From: Alan Cox @ 2006-08-17 0:38 UTC (permalink / raw)
To: Mark Lord; +Cc: jgarzik, linux-ide
Ar Mer, 2006-08-16 am 18:50 -0400, ysgrifennodd Mark Lord:
> Alan Cox wrote:
> > Any objection to me adding a new cable type for "40 wire ATA66 capable"
> > to indicate the laptop vendor has been sneaky and we should do full UDMA
> > ranges regardless of drive or other controller reporting.
>
> Good. I'll need that feature for a little mini-ITX box here as well.
> It uses a *really short* 40W cable for UDMA4 operation.
Can you send me the dmidecode output and the lspci -vxxx for it so I can
find something to autodetect this.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: More ATA corner cases
2006-08-17 0:38 ` Alan Cox
@ 2006-08-17 0:52 ` Mark Lord
2006-08-17 2:57 ` Albert Lee
0 siblings, 1 reply; 8+ messages in thread
From: Mark Lord @ 2006-08-17 0:52 UTC (permalink / raw)
To: Alan Cox; +Cc: jgarzik, linux-ide
Alan Cox wrote:
> Ar Mer, 2006-08-16 am 18:50 -0400, ysgrifennodd Mark Lord:
>> Alan Cox wrote:
>>> Any objection to me adding a new cable type for "40 wire ATA66 capable"
>>> to indicate the laptop vendor has been sneaky and we should do full UDMA
>>> ranges regardless of drive or other controller reporting.
>> Good. I'll need that feature for a little mini-ITX box here as well.
>> It uses a *really short* 40W cable for UDMA4 operation.
>
> Can you send me the dmidecode output and the lspci -vxxx for it so I can
> find something to autodetect this.
No autodetection possible here -- custom configuration.
All I need is a modparam or /sys attrib that I can set.
Thanks.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: More ATA corner cases
2006-08-17 0:52 ` Mark Lord
@ 2006-08-17 2:57 ` Albert Lee
2006-08-17 8:28 ` Alan Cox
0 siblings, 1 reply; 8+ messages in thread
From: Albert Lee @ 2006-08-17 2:57 UTC (permalink / raw)
To: Mark Lord, Alan Cox; +Cc: jgarzik, linux-ide, Doug Maxey, Unicorn Chang
Mark Lord wrote:
> Alan Cox wrote:
>
>> Ar Mer, 2006-08-16 am 18:50 -0400, ysgrifennodd Mark Lord:
>>
>>> Alan Cox wrote:
>>>
>>>> Any objection to me adding a new cable type for "40 wire ATA66 capable"
>>>> to indicate the laptop vendor has been sneaky and we should do full
>>>> UDMA
>>>> ranges regardless of drive or other controller reporting.
>>>
>>> Good. I'll need that feature for a little mini-ITX box here as well.
>>> It uses a *really short* 40W cable for UDMA4 operation.
>>
>>
>> Can you send me the dmidecode output and the lspci -vxxx for it so I can
>> find something to autodetect this.
>
>
> No autodetection possible here -- custom configuration.
>
> All I need is a modparam or /sys attrib that I can set.
>
This problem was also seen on the IBM JS20 blade server:
The on-board IDE wires are short enough and capable of UDMA/66, but the
cable detection limits the speed to UDMA/33.
It will be nice to have the "40 wire ATA66 capable" support.
Don't know whether the JS20 can be added to the whitelist automatically.
If Alan is ok, will ask Unicorn's help to sent Alan the dmidecode and
lspci -vxxx data of JS20 (and maybe other blades like HS20/HS40, etc).
--
albert
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: More ATA corner cases
2006-08-17 2:57 ` Albert Lee
@ 2006-08-17 8:28 ` Alan Cox
0 siblings, 0 replies; 8+ messages in thread
From: Alan Cox @ 2006-08-17 8:28 UTC (permalink / raw)
To: albertl; +Cc: Mark Lord, jgarzik, linux-ide, Doug Maxey, Unicorn Chang
Ar Iau, 2006-08-17 am 10:57 +0800, ysgrifennodd Albert Lee:
> Don't know whether the JS20 can be added to the whitelist automatically.
> If Alan is ok, will ask Unicorn's help to sent Alan the dmidecode and
> lspci -vxxx data of JS20 (and maybe other blades like HS20/HS40, etc).
If they have unique PCI subsystem identifiers then it should be easy to
do.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: More ATA corner cases
2006-08-16 12:39 More ATA corner cases Alan Cox
2006-08-16 12:27 ` Erik Mouw
2006-08-16 22:50 ` Mark Lord
@ 2006-08-16 22:55 ` Jeff Garzik
2 siblings, 0 replies; 8+ messages in thread
From: Jeff Garzik @ 2006-08-16 22:55 UTC (permalink / raw)
To: Alan Cox; +Cc: linux-ide
Alan Cox wrote:
> Any objection to me adding a new cable type for "40 wire ATA66 capable"
> to indicate the laptop vendor has been sneaky and we should do full UDMA
> ranges regardless of drive or other controller reporting.
No initial objections, but of course need to see the patch :)
Jeff
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2006-08-17 8:10 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2006-08-16 12:39 More ATA corner cases Alan Cox
2006-08-16 12:27 ` Erik Mouw
2006-08-16 22:50 ` Mark Lord
2006-08-17 0:38 ` Alan Cox
2006-08-17 0:52 ` Mark Lord
2006-08-17 2:57 ` Albert Lee
2006-08-17 8:28 ` Alan Cox
2006-08-16 22:55 ` Jeff Garzik
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