Qspan driver

Qspan driver

[alex daniloff]

I'm looking for embedded driver for Qspan.
I've found only drivers for host or pc not for embedded OS.
My configuration:Motorola CPV3060 board with MPC860
MPC860 <==Qbus==> Qspan <==PCI==> PMC modules

I tried to read from PMC PCI configuration space but I've got Machine Check.
If you can, help me.

Thanks, Alex


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Re: Qspan driver

[Dan Malek]

alex daniloff wrote:
>
> I'm looking for embedded driver for Qspan.

There are a couple of different implementations of the Tundra
Qspan for MPC8xx in the Linux sources.  You may have to adapt
them depending upon your design, as there are many possibilities.

> I've found only drivers for host or pc not for embedded OS.

Well, these aren't really "drivers", but rather the bridge
initialization and configuration space I/O functions.

> I tried to read from PMC PCI configuration space but I've got Machine Check.

Even for a properly configured Qspan you will get these for devices
that don't exist.  You need to ensure (as Linux does) that you have
a continuation model machine check handler that can return errors to
the caller of this type of access.




	-- Dan

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/