linux-kernel - Re: [PATCH v2 12/14] habanalabs/gaudi: Add ethtool support using coresight

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Message-ID: <CAFCwf13PR7T_PXyJxVsUjG0+5QwhRoxGv4DsbwJQ3NbAux+brg@mail.gmail.com>
Date:   Mon, 14 Sep 2020 08:14:39 +0300
From:   Oded Gabbay <oded.gabbay@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     "Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>,
        netdev@...r.kernel.org, SW_Drivers <SW_Drivers@...ana.ai>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, Andrew Lunn <andrew@...n.ch>,
        Omer Shpigelman <oshpigelman@...ana.ai>
Subject: Re: [PATCH v2 12/14] habanalabs/gaudi: Add ethtool support using coresight

On Mon, Sep 14, 2020 at 4:39 AM Florian Fainelli <f.fainelli@...il.com> wrote:
>
>
>
> On 9/12/2020 7:41 AM, Oded Gabbay wrote:
> > From: Omer Shpigelman <oshpigelman@...ana.ai>
> >
> > The driver supports ethtool callbacks and provides statistics using the
> > device's profiling infrastructure (coresight).
>
> Is there any relationship near or far with ARM's CoreSight:
>
> https://developer.arm.com/ip-products/system-ip/coresight-debug-and-trace
>
> if not, should you rename this?
> --
> Florian

We have a cortex A53 inside our ASIC and we use other ARM IPs.
One of those IPs is the CoreSight infrastructure for trace and profiling.
It also provides us with something they call SPMU (performance monitoring).
Those units provide us counters per port with which we provide the statistics.

Thanks,
Oded