Re: [RFC v3] arm: Add platform bus driver for memory mapped virtiodevice

[Anthony Liguori]

On 09/18/2011 10:29 PM, Rusty Russell wrote:
> On Fri, 16 Sep 2011 12:01:49 -0500, Anthony Liguori<aliguori@xxxxxxxxxx>  wrote:
> > On 09/16/2011 11:47 AM, Pawel Moll wrote:
> > > This patch, based on virtio PCI driver, adds support for memory
> > > mapped (platform) virtio  device. This should allow environments
> > > like qemu to use virtio-based block&   network devices.
> > >
> > > One can define and register a platform device which resources
> > > will describe memory mapped control registers and "mailbox"
> > > interrupt. Such device can be also instantiated using the Device
> > > Tree node with compatible property equal "virtio,mmio".
> > >
> > > Cc: Rusty Russell<rusty@xxxxxxxxxxxxxxx>
> > > Cc: Anthony Liguori<aliguori@xxxxxxxxxx>
> > > Cc: Michael S.Tsirkin<mst@xxxxxxxxxx>
> > > Signed-off-by: Pawel Moll<pawel.moll@xxxxxxx>
> >
> > Have you written a specification for this device?
> >
> > Rusty maintains a formal spec for all virtio devices at:
> >
> > http://ozlabs.org/~rusty/virtio-spec/
> >
> > The spec should be written before merging the code to make sure that there
> > aren't future compatibility problems.
>
> A good idea, but the current spec is for PCI.  I wonder if we should
> move the PCI part out to an appendix and make it more general?
>
> Meanwhile, perhaps this would be suitable as an appendix.

I was thinking an appendix would be a good start.

Regards,

Anthony Liguori

> Cheers,
> Rusty.

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