PCI on MPC8265

PCI on MPC8265

[Tamas Bara]

Hi,

I´m running Linux 2.4.4 on a TQM8260 board with
an MPC8265 on it and an Ethernet controller on
the PCI Bus.

When Linux scans the PCI Bus it detects the
controller multiple times. I could change the for
loop to devfn < 9 since I only got the internal
host bridge and the controller on the bus:

/* Go find them, Rover! */
for (devfn = 0; devfn < 0x100; devfn += 8) {
	dev0.devfn = devfn;
	pci_scan_slot(&dev0);
}

This works, but I don´t want to change the kernel.
So I´m looking for a different solution.

How does the kernel know that it already detected
a device before?

Thanks


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Re: PCI on MPC8265

[bhupinder sahran]

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Hi

I think problen is with the idselect on pci back
plane.
Looks like same card is connected to more than one
ideselect, so when kernel is doing enumertaion for
different idselect, same card is responding and kernel
thinks that you have multiple card sitting on pci back
plane. In place of changing the kernel, you shall fix
your hardware....that is a better solution...

Bhupi

Linux +Hypertransport --> Silicon
www.gdatech.com




--- Tamas Bara <tba@mixed-mode.de> wrote:
>
> Hi,
>
> I´m running Linux 2.4.4 on a TQM8260 board with
> an MPC8265 on it and an Ethernet controller on
> the PCI Bus.
>
> When Linux scans the PCI Bus it detects the
> controller multiple times. I could change the for
> loop to devfn < 9 since I only got the internal
> host bridge and the controller on the bus:
>
> /* Go find them, Rover! */
> for (devfn = 0; devfn < 0x100; devfn += 8) {
> 	dev0.devfn = devfn;
> 	pci_scan_slot(&dev0);
> }
>
> This works, but I don´t want to change the kernel.
> So I´m looking for a different solution.
>
> How does the kernel know that it already detected
> a device before?
>
> Thanks
>
>
>


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