Linux and two PCI busses

Matt Porter mporter at mvista.com
Mon Aug 27 20:39:04 EST 2001


On Mon, Aug 27, 2001 at 11:10:55AM +1000, Rudolf Ladyzhenskii wrote:
>
> Hi, all
>
> We have a design where MPC8260 has two independent PCI busses.  We use
> Tundra PowerSpan device to provide two PCI busses.
> Linux only supports single PCI bus.

Correction, the Linux PCI subsystem only supports one _logical_ bus.

> Anyone tried to modify Linux to have support for multiple PCI busses? I mean
> two independent busses, not a PCI bus and another PCI bus behind a bridge.

It's already supported in arch-specific code, no modification necessary.
In linuxppc_2_4_devel, see the K2 port as an example.

--
Matt Porter
MontaVista Software, Inc.
mporter at mvista.com

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