Problem of using a PCI device in a Hot Plug PCI slot

Problem of using a PCI device in a Hot Plug PCI slot

[Igor Sharovar]

Hello,

A PCI card, which developed in my company, isn't powered in a Hot Plug PCI 
slot(  Intel server ).
During boot-up, a populated slot powers up, then immediately powers off.
The card works fine in non Hot Plug slots. The Hot Plug PCI specification 
says that a regular PCI card should at least be powered in a Hot Plug PCI 
slot.
What are requirements for running a PCI card in a Hot Plug slot.
I would appreciate any help.

Igor

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Re: Problem of using a PCI device in a Hot Plug PCI slot

[Robert Hancock]

Igor Sharovar wrote:
> Hello,
> 
> A PCI card, which developed in my company, isn't powered in a Hot Plug 
> PCI slot(  Intel server ).
> During boot-up, a populated slot powers up, then immediately powers off.
> The card works fine in non Hot Plug slots. The Hot Plug PCI 
> specification says that a regular PCI card should at least be powered in 
> a Hot Plug PCI slot.
> What are requirements for running a PCI card in a Hot Plug slot.
> I would appreciate any help.

Maybe the card isn't grounding the right PRSNT pins to allow the machine 
to detect the presence of the card?

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/

Re: Problem of using a PCI device in a Hot Plug PCI slot

[Igor Sharovar]

Robert,
I checked these pins. They are grounded.
I wonder if a Hot Plug slot doesn't have enough power to feed the card. I 
measured voltages (12, 3.3 and 5). I saw a spark during power on, but this 
spark never goes to a normal voltage level. For example, in the +12v pin I 
saw a spark +3.5 volt.

Igor


>From: Robert Hancock <hancockr@shaw.ca>
>To: Igor Sharovar <ig_sh@hotmail.com>
>CC: linux-kernel@vger.kernel.org
>Subject: Re: Problem of using a PCI device in a Hot Plug PCI slot
>Date: Mon, 25 Sep 2006 18:16:32 -0600
>
>Igor Sharovar wrote:
>>Hello,
>>
>>A PCI card, which developed in my company, isn't powered in a Hot Plug PCI 
>>slot(  Intel server ).
>>During boot-up, a populated slot powers up, then immediately powers off.
>>The card works fine in non Hot Plug slots. The Hot Plug PCI specification 
>>says that a regular PCI card should at least be powered in a Hot Plug PCI 
>>slot.
>>What are requirements for running a PCI card in a Hot Plug slot.
>>I would appreciate any help.
>
>Maybe the card isn't grounding the right PRSNT pins to allow the machine to 
>detect the presence of the card?
>
>--
>Robert Hancock      Saskatoon, SK, Canada
>To email, remove "nospam" from hancockr@nospamshaw.ca
>Home Page: http://www.roberthancock.com/
>

_________________________________________________________________
Buy what you want when you want it on Sympatico / MSN Shopping 
http://shopping.sympatico.msn.ca/content/shp/?ctId=2,ptnrid=176,ptnrdata=081805