linux-kernel - RE: [PATCH v5 2/2] QE: remove PPCisms for QE

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Date:   Wed, 21 Sep 2016 01:13:19 +0000
From:   Qiang Zhao <qiang.zhao@....com>
To:     Leo Li <pku.leo@...il.com>
CC:     Scott Wood <oss@...error.net>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        lkml <linux-kernel@...r.kernel.org>,
        "X.B. Xie" <xiaobo.xie@....com>
Subject: RE: [PATCH v5 2/2] QE: remove PPCisms for QE

On Mon, Sep 20, 2016 at 4:13 AM, Leo Li wrote:
> -----Original Message-----
> From: Leo Li [mailto:pku.leo@...il.com]
> Sent: Tuesday, September 20, 2016 4:13 AM
> To: Qiang Zhao <qiang.zhao@....com>
> Cc: Scott Wood <oss@...error.net>; linuxppc-dev <linuxppc-
> dev@...ts.ozlabs.org>; lkml <linux-kernel@...r.kernel.org>; X.B. Xie
> <xiaobo.xie@....com>
> Subject: Re: [PATCH v5 2/2] QE: remove PPCisms for QE
> 
> On Mon, Jul 25, 2016 at 12:43 AM, Zhao Qiang <qiang.zhao@....com> wrote:
> > QE was supported on PowerPC, and dependent on PPC, Now it is supported
> > on other platforms. so remove PPCisms.
> >
> > Signed-off-by: Zhao Qiang <qiang.zhao@....com>
> > ---
> > Changes for v2:
> >         - na
> > Changes for v3:
> >         - add NO_IRQ
> > Changes for v4:
> >         - modify spin_event_timeout to opencoded timeout loop
> >         - remove NO_IRQ
> >         - modify virq_to_hw to opencoed code Changes for v5:
> >         - modify commit msg
> >         - modify depends of QUICC_ENGINE
> >         - add kerneldoc header for qe_issue_cmd
> >
> >  drivers/irqchip/qe_ic.c       | 28 +++++++++------
> >  drivers/soc/fsl/qe/Kconfig    |  2 +-
> >  drivers/soc/fsl/qe/qe.c       | 80 ++++++++++++++++++++++++++--------------
> ---
> >  drivers/soc/fsl/qe/qe_io.c    | 42 ++++++++++-------------
> >  drivers/soc/fsl/qe/qe_tdm.c   |  8 ++---
> >  drivers/soc/fsl/qe/ucc.c      | 10 +++---
> >  drivers/soc/fsl/qe/ucc_fast.c | 68 ++++++++++++++++++------------------
> >  include/soc/fsl/qe/qe.h       |  1 -
> >  include/soc/fsl/qe/qe_ic.h    | 12 +++----
> >  9 files changed, 133 insertions(+), 118 deletions(-)
> >
> 
> [snip]
> 
> > diff --git a/drivers/soc/fsl/qe/Kconfig b/drivers/soc/fsl/qe/Kconfig
> > index 73a2e08..b26b643 100644
> > --- a/drivers/soc/fsl/qe/Kconfig
> > +++ b/drivers/soc/fsl/qe/Kconfig
> > @@ -4,7 +4,7 @@
> >
> >  config QUICC_ENGINE
> >         bool "Freescale QUICC Engine (QE) Support"
> > -       depends on FSL_SOC && PPC32
> > +       depends on OF && HAS_IOMEM
> >         select GENERIC_ALLOCATOR
> >         select CRC32
> >         help
> 
> You make it possible to build QE drivers on ARM, but the UCC_GETH fails to
> build on arm64.  Please make sure all these drivers can build on other
> architectures.  Or you can simply make them only build for Power architecture
> as most of them are not available on ARM.
> 

Most of them are not available on ARM and ARM64.
Now, only qe-hdlc is available on ARM64.

BR
-Zhao Qiang