configuring libbsd for em NIC driver

[Sebastian Huber]

----- Joel Sherrill <joel.sherrill at oarcorp.com> schrieb:
> Hi
> 
> As I posted, I have the pc386 up to the point where I can
> run the non-network tests with one intermittent failure.
> 
> I am pretty sure Mark wants the em driver found in
> freebsd/sys/dev/e1000/ (em driver).
> 
> FWIW it looks like qemu simulates a handful of useful
> NICs. I would like to also be able to exercise them.
> 
> qemu: Supported NIC models: ne2k_pci,i82551,i82557b,i82559er,rtl8139,e1000,pcnet,virtio
> 
> This covers the em, fxp, rtl, and AMD PCNET Lance. That's
> would cover a lot of the PC territory.
> 
> So how does one configure this in the stack? And bring
> it up enough to see that the NIC is found.

You have to add a "pci" child device to the "nexus" device and make sure that the desired driver is referenced.  See also

rtemsbsd/include/bsp/nexus-devices.h

-- 
Sebastian Huber, embedded brains GmbH

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