linux-kernel - Re: 2.6.20 PCI Cannot allocate resource region 2

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Date:	Tue, 6 Feb 2007 11:13:21 +0400
From:	"Manu Abraham" <abraham.manu@...il.com>
To:	"Grant Grundler" <grundler@...isc-linux.org>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-pci@...ey.karlin.mff.cuni.cz,
	greg@...ah.com
Subject: Re: 2.6.20 PCI Cannot allocate resource region 2

On 2/6/07, Grant Grundler <grundler@...isc-linux.org> wrote:
> On Tue, Feb 06, 2007 at 10:28:56AM +0400, Manu Abraham wrote:
> > On 2/6/07, Andrew Morton <akpm@...ux-foundation.org> wrote:
> > >On Mon, 5 Feb 2007 22:03:31 -0700 Grant Grundler
> > ><grundler@...isc-linux.org> wrote:
> > >
> > >> On Mon, Feb 05, 2007 at 09:55:28PM -0700, Grant Grundler wrote:
> > >> ...
> > >> > >   Control: I/O- Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop-
> > >ParErr- Stepping- SERR- FastB2B-
> > >> > >   Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> > ><TAbort- <MAbort- >SERR+ <PERR+
> > >> > >   Latency: 0, Cache Line Size 0c
> > >> > >   BIST is running
> > >> >
> > >> > BIST is required to complete in 2 seconds. Either with success or
> > >failure.
> > >> > I expect BIOS to have complained before launching grub/lilo.
> > >>
> > >> Gregkh,
> > >> I just realized linux-pci bus scan should ignore devices (print a
> > >warning)
> > >> which have BIST set.  Want a patch for this?
> > >>
> > >> Slight risk some previously "working" device which violates the
> > >> spec might get ignored...but I hope there aren't too many of those.
> > >
> > >Should we wait two seconds before declaring the device dead?  To see
> > >whether
> > >it will come back?
> > >
> >
> >
> > Wonders !
> >
> > I was about to give the card it's last rites. I thought well let me
> > try under the other OS
>
> Could you be more specific? Which OS? FreeBSD? :)
>


Hehe, we don't get question marks and stuff like that for those OS 's .. ;-)

M$ XP SP2


>
> > I didn't have any drivers for the same, since the demodulator driver
> > doesn't exist in the other OS also, but the bridge device does have
> > the driver.
> >
> > I plugged the card in, the OS searched for drivers, since i didn't
> > have any didn't load any..
> > So it went under a question mark.
> >
> > Looking under Resources,
> >
> > It showed the PCI information string like this ..
> >
> > PCI\VEN_1822&DEV_4E35&SUBSYS_00311822&REV_01\4&2E98101C&0&10F0
> >
> > then i thought try with the driver eventhough support for the
> > demodulator doesn't exist ..
> >
> > Downloaded and installed drivers ..
> >
> > Lo ..!
> >
> > Memory Range: F87FF000 - F87FFFFF
> > IRQ : 17
> >
> > it got assigned a memory region indeed.
>
> Excellent.
>
> > So, to wrap it up, the device is not dead .. We have something wrong
> > in the PCI subsystem probably.
>
> Hrm maybe but not likely. I'm more inclined to believe PCI subsystem
> is missing hacks needed for that device and/or BIOS.
>

I have access to the source there, but there are no PCI specific
stuff, i think the NT HAL just handles all the PCI stuff over there.

It would be great , if we could have the missing hacks under Linux as well.

> grant
>

regards,
manu
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