Resetting a PCI device

Resetting a PCI device

[dave.fraser]

Is there any way of issuing a PCI reset (safely) without rebooting?  I am
developing a peripheral device (using a pci card with an FPGA and a plx9080
pci interface), and find that its local bus is prone to hanging up.  It
would be nice if I could just reset the entire device via the PCI reset,
without having to go through the hassle of a reboot.  Is this wishful
thinking?

- Dave

---------------------------------------------------------------------
 Dave Fraser
 Development Engineer
 BAE Systems, Ferry Road,
 Edinburgh, EH5 2XS
 Tel: +44 131 3434729
 Fax: +44 131 3434124
---------------------------------------------------------------------

Re: Resetting a PCI device

[Francois Romieu]

dave.fraser@baesystems.com <dave.fraser@baesystems.com> ecrit :
> Is there any way of issuing a PCI reset (safely) without rebooting?  I am

No.

[...]
> without having to go through the hassle of a reboot.  Is this wishful
> thinking?

Yes. Try to narrow the circunstances under which the device locks and avoid
them at all cost is the best to be done.

-- 
Ueimor

Re: Resetting a PCI device

[Eric Pennamen]

Why don't do a local RESET by writing in CNTRL register of the PLX9080 ?
(PLX datasheet page 79 bit 29 and 28 for reset and reload eeprom config)

dave.fraser@baesystems.com a écrit :

> Is there any way of issuing a PCI reset (safely) without rebooting?  I am
> developing a peripheral device (using a pci card with an FPGA and a plx9080
> pci interface), and find that its local bus is prone to hanging up.  It
> would be nice if I could just reset the entire device via the PCI reset,
> without having to go through the hassle of a reboot.  Is this wishful
> thinking?
>
> - Dave
>
> ---------------------------------------------------------------------
>  Dave Fraser
>  Development Engineer
>  BAE Systems, Ferry Road,
>  Edinburgh, EH5 2XS
>  Tel: +44 131 3434729
>  Fax: +44 131 3434124
> ---------------------------------------------------------------------
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/

--
__________________________________

Eric PENNAMEN
Service Etudes, R&D

NSI
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Téléphone   + 33 (0)4 50 09 46 30
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E-Mail :  Pennamen@nsi.fr
Internet : http://www.nsi.fr

Re: Resetting a PCI device

[Tim Wright]

Not generally.
Systems that support hot-plug PCI also have the ability to reset individual
PCI slots (ISTR that it's a requirement). Sadly, this facility is not
generally available on "normal" systems.

Tim

On Fri, Apr 27, 2001 at 10:52:20AM +0100, dave.fraser@baesystems.com wrote:
> Is there any way of issuing a PCI reset (safely) without rebooting?  I am
> developing a peripheral device (using a pci card with an FPGA and a plx9080
> pci interface), and find that its local bus is prone to hanging up.  It
> would be nice if I could just reset the entire device via the PCI reset,
> without having to go through the hassle of a reboot.  Is this wishful
> thinking?
> 
> - Dave
> 
> ---------------------------------------------------------------------
>  Dave Fraser
>  Development Engineer
>  BAE Systems, Ferry Road,
>  Edinburgh, EH5 2XS
>  Tel: +44 131 3434729
>  Fax: +44 131 3434124
> ---------------------------------------------------------------------
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/

-- 
Tim Wright - timw@splhi.com or timw@aracnet.com or twright@us.ibm.com
IBM Linux Technology Center, Beaverton, Oregon
Interested in Linux scalability ? Look at http://lse.sourceforge.net/
"Nobody ever said I was charming, they said "Rimmer, you're a git!"" RD VI