linux-kernel - RE: [PATCH 1/2] staging:fsl-mc: Move DPIO from staging to drivers/soc/fsl

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Message-ID: <AM0PR04MB4867D7E843D3EAFB73EF939D8F530@AM0PR04MB4867.eurprd04.prod.outlook.com>
Date:   Wed, 18 Jul 2018 18:10:24 +0000
From:   Leo Li <leoyang.li@....com>
To:     Roy Pledge <roy.pledge@....com>,
        Laurentiu Tudor <laurentiu.tudor@....com>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
CC:     Ioana Ciocoi Radulescu <ruxandra.radulescu@....com>,
        Horia Geanta <horia.geanta@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "arnd@...db.de" <arnd@...db.de>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "robin.murphy@....com" <robin.murphy@....com>
Subject: RE: [PATCH 1/2] staging:fsl-mc: Move DPIO from staging to
 drivers/soc/fsl



> -----Original Message-----
> From: Roy Pledge
> Sent: Monday, July 9, 2018 10:24 AM
> To: Laurentiu Tudor <laurentiu.tudor@....com>;
> devel@...verdev.osuosl.org; linux-arm-kernel@...ts.infradead.org;
> gregkh@...uxfoundation.org; Leo Li <leoyang.li@....com>
> Cc: Ioana Ciocoi Radulescu <ruxandra.radulescu@....com>; Horia Geanta
> <horia.geanta@....com>; linux-kernel@...r.kernel.org; arnd@...db.de;
> catalin.marinas@....com; robin.murphy@....com
> Subject: Re: [PATCH 1/2] staging:fsl-mc: Move DPIO from staging to
> drivers/soc/fsl
> 
> On 7/9/2018 6:37 AM, Laurentiu Tudor wrote:
> > Hi Roy,
> >
> > Couple of comments inline.
> >
> > On 05.07.2018 22:41, Roy Pledge wrote:
> >> Move the NXP DPIO (Datapath I/O Driver) out of the drivers/staging
> >> directory and into the drivers/soc/fsl directory.
> >>
> >> The DPIO driver enables access to Queue and Buffer Manager (QBMAN)
> >> hardware on NXP DPAA2 devices. This is a prerequisite to moving the
> >> DPAA2 Ethernet driver out of staging.
> >>
> >> Signed-off-by: Roy Pledge <roy.pledge@....com>
> >> ---
> >>   MAINTAINERS                                                    |  2 +-
> >>   drivers/crypto/caam/sg_sw_qm2.h                                |  2 +-
> >>   drivers/crypto/caam/sg_sw_sec4.h                               |  2 +-
> >>   drivers/soc/fsl/Kconfig                                        | 10 ++++++++++
> >>   drivers/soc/fsl/Makefile                                       |  1 +
> >>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/Makefile          |  0
> >>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-cmd.h        |  0
> >>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-driver.c     |  2 +-
> >>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-driver.txt   |  0
> > Maybe this should be converted to .rst and go in the already existing
> > Documentation/networking/dpaa2/?
> 
> I can look into converting this to RST but I'm not sure it belongs in the
> networking documentation folder since it will be used by other non
> networking drivers in the near future - compress/decompress for example.
> >
> >>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-service.c    |  2 +-
> >>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio.c            |  0
> >>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio.h            |  0
> >>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/qbman-portal.c    |  2 +-
> >>   drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/qbman-portal.h    |  2 +-
> >>   drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h                 |  4 ++--
> >>   drivers/staging/fsl-mc/bus/Kconfig                             |  9 ---------
> >>   drivers/staging/fsl-mc/bus/Makefile                            |  2 --
> >>   {drivers/staging/fsl-mc/include => include/soc/fsl}/dpaa2-fd.h |  0
> >>   .../staging/fsl-mc/include => include/soc/fsl}/dpaa2-global.h  |  0
> >>   {drivers/staging/fsl-mc/include => include/soc/fsl}/dpaa2-io.h |  0
> >>   20 files changed, 20 insertions(+), 20 deletions(-)
> >>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/Makefile (100%)
> >>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-cmd.h (100%)
> >>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-driver.c (99%)
> >>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-driver.txt
> (100%)
> >>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio-service.c (99%)
> >>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio.c (100%)
> >>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/dpio.h (100%)
> >>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/qbman-portal.c
> (99%)
> >>   rename drivers/{staging/fsl-mc/bus => soc/fsl}/dpio/qbman-portal.h
> (99%)
> >>   rename {drivers/staging/fsl-mc/include => include/soc/fsl}/dpaa2-fd.h
> (100%)
> >>   rename {drivers/staging/fsl-mc/include => include/soc/fsl}/dpaa2-
> global.h (100%)
> >>   rename {drivers/staging/fsl-mc/include =>
> >> include/soc/fsl}/dpaa2-io.h (100%)
> > I received feedback in the past on mc-bus that a driver should limit
> > to only one public header and one private one. Would it make sense to
> > do the same for dpio too?
> Looking at this the dpaa-2global.h file should probably be integrated into the
> dpaa2-io.h file.
> The dpaaa2-fd.h can be used by devices that don't need to used DPIO - the
> definition of a frame descriptor isn't DPIO specific so I would argue it should
> be kept in a seperate file.

Hi Roy,

Will there be a re-spin of the patch soon so that we can probably catch the next merge window?

Regards,
Leo