linux-kernel - Re: [PATCH 11/16] fpga: intel: fme: add partial reconfiguration sub feature support

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Date:   Fri, 31 Mar 2017 16:50:25 +0800
From:   Wu Hao <hao.wu@...el.com>
To:     atull@...nel.org
Cc:     Moritz Fischer <moritz.fischer@...us.com>,
        linux-fpga@...r.kernel.org,
        linux-kernel <linux-kernel@...r.kernel.org>,
        luwei.kang@...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>,
        Alan Tull <alan.tull@...el.com>,
        Xiao Guangrong <guangrong.xiao@...ux.intel.com>,
        xiaoguangrong.eric@...il.com
Subject: Re: [PATCH 11/16] fpga: intel: fme: add partial reconfiguration sub
 feature support

On Fri, Mar 31, 2017 at 12:11:12PM +0800, Xiao Guangrong wrote:
> On 31/03/2017 4:30 AM, Alan Tull wrote:
> >On Thu, Mar 30, 2017 at 7:08 AM, Wu Hao <hao.wu@...el.com> wrote:
> >>From: Kang Luwei <luwei.kang@...el.com>
> >>
> >>Partial Reconfiguration (PR) is the most important function for FME. It
> >>allows reconfiguration for given Port/Accelerated Function Unit (AFU).
> >>
> >>This patch adds support for PR sub feature. In this patch, it registers
> >>a fpga_mgr and implements fpga_manager_ops, and invoke fpga_mgr_buf_load
> >>for PR operation once PR request received via ioctl. Below user space
> >>interfaces are exposed by this sub feature.
> >>
> >>Sysfs interface:
> >>* /sys/class/fpga/<fpga.x>/<intel-fpga-fme.x>/interface_id
> >>  Read-only. Indicate the hardware interface information. Userspace
> >>  applications need to check this interface to select correct green
> >>  bitstream format before PR.
> >>
> >>Ioctl interface:
> >>* FPGA_FME_PORT_PR
> >>  Do partial reconfiguration per information from userspace, including
> >>  target port(AFU), buffer size and address info. It returns the PR status
> >>  (PR error code if failed) to userspace.
> >>
> >>Signed-off-by: Tim Whisonant <tim.whisonant@...el.com>
> >>Signed-off-by: Enno Luebbers <enno.luebbers@...el.com>
> >>Signed-off-by: Shiva Rao <shiva.rao@...el.com>
> >>Signed-off-by: Christopher Rauer <christopher.rauer@...el.com>
> >>Signed-off-by: Alan Tull <alan.tull@...el.com>
> >
> >Hi Wu Hao,
> >
> >Thanks for submitting your patches.
> >
> >I think there's been a misunderstanding of the meaning of
> >'Signed-off-by' [1].  I have not signed off on this code or had a hand
> >in its development.  But I'm happy to get to review it now.  It will
> >take a bit of time; I expect to be replying next week.
> 
> Hi Alan,
> 
> Sorry to confuse you, i think it's because you helped Chris a lot to
> implement this interface and we'd like to include your credit as this
> way. If you dislike, it will be dropped. :)
> 
> Thanks for your review in advance.
>

Hi Alan,

Sorry about this, we should ask you firstly before doing it this way.
Let me know if you don't like it, I will drop it in the next version.

Many thanks for your time and review on these patches. Look forward
for your feedback and comments. :)

Thanks
Hao