linux-kernel - Re: [PATCH] firmware: arm_scmi: Make scmi core independent of transport type

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Message-ID: <20191231122245.GA35523@bogus>
Date:   Tue, 31 Dec 2019 12:22:45 +0000
From:   Sudeep Holla <sudeep.holla@....com>
To:     Peng Fan <peng.fan@....com>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>,
        Arnd Bergmann <arnd@...db.de>,
        Jassi Brar <jassisinghbrar@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Sudeep Holla <sudeep.holla@....com>
Subject: Re: [PATCH] firmware: arm_scmi: Make scmi core independent of
 transport type

On Tue, Dec 31, 2019 at 02:50:40AM +0000, Peng Fan wrote:
>
> > Subject: [PATCH] firmware: arm_scmi: Make scmi core independent of
> > transport type
> >
> > The SCMI specification is fairly independent of the transport protocol, which
> > can be a simple mailbox (already implemented) or anything else.
> > The current Linux implementation however is very much dependent of the
> > mailbox transport layer.
> >
> > This patch makes the SCMI core code (driver.c) independent of the mailbox
> > transport layer and moves all mailbox related code to a new
> > file: mailbox.c.
> >
> > We can now implement more transport protocols to transport SCMI
> > messages.
> >
> > The transport protocols just need to provide struct scmi_transport_ops, with
> > its version of the callbacks to enable exchange of SCMI messages.
>
> Will there be v2? will this be used to replace smc mailbox?
>

There's a requirement for virtio based transport too. I need to do
a thorough review once I am able to gather the details. Feel free to
add SMC based transport based on this patch if you can, you need not
wait for me. I am fine with the approach as such.

Also I was waiting to get some feedback from Arnd or Jassi.

--
Regards,
Sudeep