linux-kernel - Re: [PATCH V2] firmware: arm_scmi: Make scmi core independent of transport type

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Date:   Wed, 15 Jan 2020 20:37:51 +0100
From:   <peter.hilber@...nsynergy.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
CC:     Arnd Bergmann <arnd@...db.de>, <peng.fan@....com>,
        Jassi Brar <jassisinghbrar@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        <cristian.marussi@....com>, Sudeep Holla <sudeep.holla@....com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH V2] firmware: arm_scmi: Make scmi core independent of
 transport type

On 14.01.20 12:11, Viresh Kumar wrote:
> Okay, I think I understand that a bit now. So here are the things
> which I may need to do now:
>
> - Maybe move payload to struct scmi_mailbox structure, as that is the
>   transport dependent structure..
>
> - Do ioremap, etc in mailbox.c only instead of driver.c
>
> - Provide more ops in struct scmi_transport_ops to provide read/write
>   helpers to the payload and implement the ones based on
>   ioread/iowrite in mailbox.c ..
>
> Am I thinking in the right direction now ?
>

Another related issue IMHO:

The "shmem" DT property, which is mapped to payload, will not be used
for the planned SCMI virtio transport. But currently "shmem" is still
required by scmi_chan_setup().

Best regards,

Peter

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