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SubjectRe: [RFC v3] arm: Add platform bus driver for memory mapped virtio device
On 09/18/2011 10:29 PM, Rusty Russell wrote:
> On Fri, 16 Sep 2011 12:01:49 -0500, Anthony Liguori<> 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<>
>>> Cc: Anthony Liguori<>
>>> Cc: Michael S.Tsirkin<>
>>> Signed-off-by: Pawel Moll<>
>> Have you written a specification for this device?
>> Rusty maintains a formal spec for all virtio devices at:
>> 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.


Anthony Liguori

> Cheers,
> Rusty.

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