On Thu, Sep 28, 2017 at 3:11 PM, Sudeep Holla <sudeep.holla@xxxxxxx> wrote:
> Some of the mailbox controller expects controller specific data in order
> to implement simple doorbell mechanism as expected by SCMI specification.
>
> This patch creates a shim layer to abstract the mailbox interface so
> that it can support any mailbox controller. It also provides default
> implementation which maps to standard mailbox client APIs, so that
> controllers implementing doorbell mechanism need not require any
> additional layer.
>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx>
Another level? Now we have three levels of stacked mailboxes, with
the highest level being the combined mailbox/memory, then the shim,
and below it the hardware mailbox.
Can you try to come up with a way to do this with fewer abstractions?
Maybe you could assume that the mailbox itself can take variable-length
data packets, and then use the shim here for those that require
something else?
Arnd
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
