Re: Linux on Force Computers CPCI-3750 eth drivers

Re: Linux on Force Computers CPCI-3750 eth drivers

[luca gambazzi]

Hi

i'm still trying to bild a running linux kernel for a Force Computers
CPCI-3750.

I've got one more error, the ethernet card doesn't work.
is a Digital DS21143 Tulip

i've installed the kernel drivers (i've tried with 2.4 and 2.5
penguinppc kernel tree), and the drivers found in
http://sourceforge.net/projects/tulip, but the error is always the same.

NETDEV WATCHDOG: eth0: transmit timed out

here can you find a bootlog (kernelboot.txt), the tcpdump on my pc, and
the .config file I used in this case (config_2_5_66.txt)

http://lsa1pc32.epfl.ch/~gamba/robox/

Maybe somebody has experence with this kind of error and can help me.

Thanks a lot
Luca Gambazzi

PS Tom: I don't find the .config file who caused the crash I've posted
last week, i'll search in my pc, sorry


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Re: Linux on Force Computers CPCI-3750 eth drivers

[Tom Rini]

On Fri, Apr 04, 2003 at 01:49:13PM +0200, luca gambazzi wrote:

> Hi
>
> i'm still trying to bild a running linux kernel for a Force Computers
> CPCI-3750.
>
> I've got one more error, the ethernet card doesn't work.
> is a Digital DS21143 Tulip
>
> i've installed the kernel drivers (i've tried with 2.4 and 2.5
> penguinppc kernel tree), and the drivers found in
> http://sourceforge.net/projects/tulip, but the error is always the same.
>
> NETDEV WATCHDOG: eth0: transmit timed out
>
> here can you find a bootlog (kernelboot.txt), the tcpdump on my pc, and
> the .config file I used in this case (config_2_5_66.txt)

Don't use CONFIG_TULIP, use CONFIG_DE4X5 and poke the upstream authors
abotu this issue.

--
Tom Rini
http://gate.crashing.org/~trini/

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Re: Linux on Force Computers CPCI-3750 eth drivers

[Matt Porter]

On Fri, Apr 04, 2003 at 01:49:13PM +0200, luca gambazzi wrote:
>
> Hi
>
> i'm still trying to bild a running linux kernel for a Force Computers
> CPCI-3750.
>
> I've got one more error, the ethernet card doesn't work.
> is a Digital DS21143 Tulip
>
> i've installed the kernel drivers (i've tried with 2.4 and 2.5
> penguinppc kernel tree), and the drivers found in
> http://sourceforge.net/projects/tulip, but the error is always the same.
>
> NETDEV WATCHDOG: eth0: transmit timed out

Assuming you are booting with the pcore kernel, are you sure that
the pci interrupt routing for the 3750 is identical to the 6750?

Regards,
--
Matt Porter
porter@cox.net
This is Linux Country. On a quiet night, you can hear Windows reboot.

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Re: Linux on Force Computers CPCI-3750 eth drivers

[luca gambazzi]

Hi Matt

I'm booting with the pcore kernel.

the pcore_find_bridges function in pcore_pci.c recognize my card as a
6750, but the 3750 uses a 21150 bridge and not a 21154.

Do you know where can i find documentation to solve this problem?
and where I have to modify?

here you can find the bios log, maybe you can find an answer.
http://lsa1pc32.epfl.ch/~gamba/robox/

Thanks a lot
luca


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Re: Linux on Force Computers CPCI-3750 eth drivers

[Matt Porter]

On Wed, Apr 09, 2003 at 11:22:49AM +0200, luca gambazzi wrote:
> I'm booting with the pcore kernel.
>
> the pcore_find_bridges function in pcore_pci.c recognize my card as a
> 6750, but the 3750 uses a 21150 bridge and not a 21154.

That makes sense.  When I did the port I had a 6750 and 680.  They
are very similar but Force is too stupid to provide a method to
uniquely identify a board at runtime.  So, you see the kludge where
anything booting a pcore kernel that has an MPC106 is a 6750 and
if it has a MPC107 then it must be a 680.

> Do you know where can i find documentation to solve this problem?
> and where I have to modify?

Talk to Force.  You need the 3750 manual.  I suspect that it has
different interrupt routing than the 6750.  Right now, you are
picking up the pcore_6750_map_irq table which has irq 10 for the
on-board tulip.  More than likely it's routed to a different input
on the 3750.  You would create a pcore_3750_map_irq, and provide
some way to uniquely identify that you are on a 3750 and have the
kernel use that map_irq function.

> here you can find the bios log, maybe you can find an answer.
> http://lsa1pc32.epfl.ch/~gamba/robox/

Definitely looks like pci interrupt routing is incorrect.  tulip
driver isn't getting interrupts.  One warning, once you get
3750 docs...don't trust them, they are often incorrect. :)

When you get this working, please post a patch so it can be
incorporated.  Good luck.

Regards,
--
Matt Porter
porter@cox.net
This is Linux Country. On a quiet night, you can hear Windows reboot.

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Re: Linux on Force Computers CPCI-3750 eth drivers

[Matt Porter]

On Wed, Apr 09, 2003 at 11:22:49AM +0200, luca gambazzi wrote:
> Hi Matt
>
> I'm booting with the pcore kernel.
>
> the pcore_find_bridges function in pcore_pci.c recognize my card as a
> 6750, but the 3750 uses a 21150 bridge and not a 21154.
>
> Do you know where can i find documentation to solve this problem?
> and where I have to modify?

Oh, I should have mentioned the shotgun alternative to waiting on docs
from Force.  Assume that the 3750 uses cascade irqs 9-12 for all pci
interrupts just like the 6750.  Try changing the 6750 tulip map_irq
entry to be 9,11,12 and see if any work.

BTW, saw your list of devices in the /proc/pci dump.  Looks like a
fun project. :)

Regards,
--
Matt Porter
porter@cox.net
This is Linux Country. On a quiet night, you can hear Windows reboot.

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Re: Linux on Force Computers CPCI-3750 eth drivers

[luca gambazzi]

hi matt

as you said the problem was on the eth card irq,... the irq is 9.
i prepear a patch and i'll send you in next days.

happy weekend
luca

On Wed, 2003-04-09 at 17:22, Matt Porter wrote:
> On Wed, Apr 09, 2003 at 11:22:49AM +0200, luca gambazzi wrote:
> > Hi Matt
> >
> > I'm booting with the pcore kernel.
> >
> > the pcore_find_bridges function in pcore_pci.c recognize my card as a
> > 6750, but the 3750 uses a 21150 bridge and not a 21154.
> >
> > Do you know where can i find documentation to solve this problem?
> > and where I have to modify?
>
> Oh, I should have mentioned the shotgun alternative to waiting on docs
> from Force.  Assume that the 3750 uses cascade irqs 9-12 for all pci
> interrupts just like the 6750.  Try changing the 6750 tulip map_irq
> entry to be 9,11,12 and see if any work.
>
> BTW, saw your list of devices in the /proc/pci dump.  Looks like a
> fun project. :)
>
> Regards,


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