linux-kernel - Re: [net-next PATCH v5 1/7] octeon_ep: Add driver framework and device initialization

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Date:   Wed, 13 Apr 2022 15:53:27 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Veerasenareddy Burru <vburru@...vell.com>, davem@...emloft.net,
        kuba@...nel.org, corbet@....net, netdev@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Abhijit Ayarekar <aayarekar@...vell.com>,
        Satananda Burla <sburla@...vell.com>
Subject: Re: [net-next PATCH v5 1/7] octeon_ep: Add driver framework and
 device initialization

On 4/13/22 10:34, Veerasenareddy Burru wrote:
> @@ -0,0 +1,35 @@
> +.. SPDX-License-Identifier: GPL-2.0+
> +
> +====================================================================
> +Linux kernel networking driver for Marvell's Octeon PCI Endpoint NIC
> +====================================================================
> +
> +Network driver for Marvell's Octeon PCI EndPoint NIC.
> +Copyright (c) 2020 Marvell International Ltd.
> +
> +Contents
> +========
> +
> +- `Overview`_
> +- `Supported Devices`_
> +- `Interface Control`_
> +

Why did you manually add table of contents?

> +Interface Control
> +=================
> +Network Interface control like changing mtu, link speed, link down/up are
> +done by writing command to mailbox command queue, a mailbox interface
> +implemented through a reserved region in BAR4.
> +This driver writes the commands into the mailbox and the firmware on the
> +Octeon device processes them. The firmware also sends unsolicited notifications
> +to driver for events suchs as link change, through notification queue
> +implemented as part of mailbox interface.

How does one write to mailbox command queue?

-- 
An old man doll... just what I always wanted! - Clara