Hi,
some super high level questions:
> different controllers according to their needs. A backend
> example can be found in the device model of the open source
> project ACRN. For more information, please refer to
> https://projectacrn.org.
Could you provide a link directly to the backend, please?
> The device ID request:
> https://github.com/oasis-tcs/virtio-spec/issues/85
Shall we wait for this to be approved? Or will it get only approved once
the driver here is upstream?
> + If you say yes to this option, support will be included for the virtio
> + I2C adapter driver. The hardware can be emulated by any device model
> + software according to the virtio protocol.
That means stuff like "limiting which devices on a given bus can be
accessed" will be handled by the backends, or?
What kind of testing has been done with this on which setup?
Thanks and happy hacking,
Wolfram
On 2020/10/8 22:01, Wolfram Sang wrote:
> Hi,
>
> some super high level questions:
>
>> different controllers according to their needs. A backend
>> example can be found in the device model of the open source
>> project ACRN. For more information, please refer to
>> https://projectacrn.org.
> Could you provide a link directly to the backend, please?
Sure. Here is the link.
https://raw.githubusercontent.com/projectacrn/acrn-hypervisor/master/devicemodel/hw/pci/virtio/virtio_i2c.c
>> The device ID request:
>> https://github.com/oasis-tcs/virtio-spec/issues/85
> Shall we wait for this to be approved? Or will it get only approved once
> the driver here is upstream?
That's what I want to know also.
So hi Michael, what's the upstream flow for this patch ?
Thanks.
>> + If you say yes to this option, support will be included for the virtio
>> + I2C adapter driver. The hardware can be emulated by any device model
>> + software according to the virtio protocol.
> That means stuff like "limiting which devices on a given bus can be
> accessed" will be handled by the backends, or?
>
> What kind of testing has been done with this on which setup?
>
> Thanks and happy hacking,
>
> Wolfram
Yes, you can configure what devices can be seen by the guest.
This provides a way to flexibly organize and manage I2C slave devices
from the guest.
We tested it on Intel APL MRB. There are some docs for you reference.
https://projectacrn.github.io/latest/developer-guides/hld/virtio-i2c.html?highlight=i2c
Regards.