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Date: Sun, 19 May 2013 11:21:55 +0200
From: Stefan Weil <sw@weilnetz.de>
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Subject: Re: [Qemu-devel] Writing a CAN driver for QEMU
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To: "Rempel, Cynthia" <cynt6007@vandals.uidaho.edu>
Cc: Gedare Bloom <gedare@rtems.org>, Amar Takhar <verm@darkbeer.org>, Petr Benes <petben@petben.net>, Peter Maydell <peter.maydell@linaro.org>, Thomas Doerfler <Thomas.Doerfler@embedded-brains.de>, "Sebastian.Huber@embedded-brains.de" <Sebastian.Huber@embedded-brains.de>, Jin Yang <jinyang.sia@gmail.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, Jennifer Averett <Jennifer.Averett@oarcorp.com>, Chris Johns <chrisj@rtems.org>, Paolo Bonzini <pbonzini@redhat.com>, Cl?udio Silva <claudiodcsilva@gmail.com>, Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>, Joel Sherrill <joel.sherrill@oarcorp.com>, Pavel Pisa <pisa@cmp.felk.cvut.cz>

Am 19.05.2013 09:23, schrieb Peter Maydell:
> On 19 May 2013 07:58, Jean-Christophe PLAGNIOL-VILLARD
> <plagnioj@jcrosoft.com> wrote:
>> The AT91 is simple too and there is some patch on the ML to add the
>> at91sam9263 SoC
> I would recommend against making this project depend on also getting
> an entire new SoC and board model into shape to be committed upstream.
> You want something which is either part of an existing upstream
> QEMU board or which is a pluggable card for a bus QEMU already
> supports (like PCI).
>
> thanks
> -- PMM

PCI (and USB if they were supported with LinCAN) CAN controller boards
could also be used with x86, so QEMU (with KVM) would be much faster
and use lessresources than an ARM system emulation.

So one of the PCI controllers might be the best choice.

Select one with good documentation, complete implementation (on the
RTEMS / LinCAN side) and small source code (which is typically an
indicator for the complexity - a large complex driver typically
also needs a complex emulation in QEMU).

Regards,
Stefan Weil