linux-kernel - Re: [PATCH v3 08/21] fpga: add Intel FPGA DFL PCIe device

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Message-ID: <CANk1AXRBEcz5_j+v0oTAXfH10hrPbHGabdR8Pqt07exYxYgfCw@mail.gmail.com>
Date:   Mon, 4 Dec 2017 13:46:59 -0600
From:   Alan Tull <atull@...nel.org>
To:     Wu Hao <hao.wu@...el.com>
Cc:     David Laight <David.Laight@...lab.com>,
        "mdf@...nel.org" <mdf@...nel.org>,
        "linux-fpga@...r.kernel.org" <linux-fpga@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-api@...r.kernel.org" <linux-api@...r.kernel.org>,
        "luwei.kang@...el.com" <luwei.kang@...el.com>,
        "yi.z.zhang@...el.com" <yi.z.zhang@...el.com>,
        Tim Whisonant <tim.whisonant@...el.com>,
        Enno Luebbers <enno.luebbers@...el.com>,
        Shiva Rao <shiva.rao@...el.com>,
        Christopher Rauer <christopher.rauer@...el.com>,
        Xiao Guangrong <guangrong.xiao@...ux.intel.com>
Subject: Re: [PATCH v3 08/21] fpga: add Intel FPGA DFL PCIe device

On Mon, Nov 27, 2017 at 9:15 PM, Wu Hao <hao.wu@...el.com> wrote:
> On Mon, Nov 27, 2017 at 10:28:04AM +0000, David Laight wrote:
>> From: Wu Hao
>> > Sent: 27 November 2017 06:42
>> > From: Zhang Yi <yi.z.zhang@...el.com>
>> >
>> > The Intel FPGA device appears as a PCIe device on the system. This patch
>> > implements the basic framework of the driver for Intel PCIe device which
>> > is located between CPU and Accelerated Function Units (AFUs), and has
>> > the Device Feature List (DFL) implemented in its MMIO space.
>>
>> This ought to have a better name than 'Intel FPGA'.
>> An fpga can be used for all sorts of things, this looks like
>> a very specific architecture using a common VHDL environment to
>> allow certain types of user VHDL be accessed over PCIe.
>
> Hi David
>
> This patch adds a pcie device driver for Intel FPGA devices which implements
> the DFL, e.g Intel Server Platform with In-package FPGA and Intel FPGA PCIe
> Acceleration Cards. They are pcie devices, and all have DFL implemented in
> the MMIO space, so we would like to use one kernel driver to handle them.
>
> With this full patchset, it just provides user the interfaces to configure
> and access the FPGA accelerators on Intel DFL based FPGA devices. For sure,
> users can develop and build their own logics via tools provided by Intel,
> program them to accelerators on these Intel FPGA devices, and access them
> for their workloads.

I don't see anything Intel specific here.  This could all be named dfl-*

Alan

>
> Thanks
> Hao