linux-kernel - RE: [PATCH v12 4/6] QE/CPM: move muram management functions to qe

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Message-ID: <SN1PR0301MB1550974588581984B4146FB19B220@SN1PR0301MB1550.namprd03.prod.outlook.com>
Date:	Tue, 27 Oct 2015 06:24:56 +0000
From:	Zhao Qiang <qiang.zhao@...escale.com>
To:	Scott Wood <scottwood@...escale.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	"lauraa@...eaurora.org" <lauraa@...eaurora.org>,
	Xiaobo Xie <X.Xie@...escale.com>,
	"benh@...nel.crashing.org" <benh@...nel.crashing.org>,
	Li Leo <LeoLi@...escale.com>,
	"paulus@...ba.org" <paulus@...ba.org>
Subject: RE: [PATCH v12 4/6] QE/CPM: move muram management functions to
 qe_common

On Tue, Oct 27, 2015 at 12:48 PM, Wood Scott-B07421 wrote:
> -----Original Message-----
> From: Wood Scott-B07421
> Sent: Tuesday, October 27, 2015 12:48 PM
> To: Zhao Qiang-B45475 <qiang.zhao@...escale.com>
> Cc: linux-kernel@...r.kernel.org; linuxppc-dev@...ts.ozlabs.org;
> lauraa@...eaurora.org; Xie Xiaobo-R63061 <X.Xie@...escale.com>;
> benh@...nel.crashing.org; Li Yang-Leo-R58472 <LeoLi@...escale.com>;
> paulus@...ba.org
> Subject: Re: [PATCH v12 4/6] QE/CPM: move muram management functions to
> qe_common
> 
> On Sun, 2015-10-25 at 21:42 -0500, Zhao Qiang-B45475 wrote:
> > On Sat, Oct 24, 2015 at 04:56 AM, Wood Scott-B07421 wrote:
> > > -----Original Message-----
> > > From: Wood Scott-B07421
> > > Sent: Saturday, October 24, 2015 4:56 AM
> > > To: Zhao Qiang-B45475 <qiang.zhao@...escale.com>
> > > Cc: linux-kernel@...r.kernel.org; linuxppc-dev@...ts.ozlabs.org;
> > > lauraa@...eaurora.org; Xie Xiaobo-R63061 <X.Xie@...escale.com>;
> > > benh@...nel.crashing.org; Li Yang-Leo-R58472 <LeoLi@...escale.com>;
> > > paulus@...ba.org
> > > Subject: Re: [PATCH v12 4/6] QE/CPM: move muram management
> functions
> > > to qe_common
> > >
> > > On Fri, 2015-10-23 at 02:45 -0500, Zhao Qiang-B45475 wrote:
> > > > On Fri, 2015-10-23 at 11:10 AM, Wood Scott-B07421
> > > > <scottwood@...escale.com>
> > > > wrote:
> > > > > -----Original Message-----
> > > > > From: Wood Scott-B07421
> > > > > Sent: Friday, October 23, 2015 11:10 AM
> > > > > To: Zhao Qiang-B45475 <qiang.zhao@...escale.com>
> > > > > Cc: linux-kernel@...r.kernel.org; linuxppc-dev@...ts.ozlabs.org;
> > > > > lauraa@...eaurora.org; Xie Xiaobo-R63061 <X.Xie@...escale.com>;
> > > > > benh@...nel.crashing.org; Li Yang-Leo-R58472
> > > > > <LeoLi@...escale.com>; paulus@...ba.org
> > > > > Subject: Re: [PATCH v12 4/6] QE/CPM: move muram management
> > > functions
> > > > > to qe_common
> > > > >
> > > > > On Wed, 2015-10-14 at 15:16 +0800, Zhao Qiang wrote:
> > > > > > QE and CPM have the same muram, they use the same management
> > > > > > functions. Now QE support both ARM and PowerPC, it is
> > > > > > necessary to move QE to "driver/soc", so move the muram
> > > > > > management functions from cpm_common to qe_common for
> > > > > > preparing to move QE code to
> > > "driver/soc"
> > > > > >
> > > > > > Signed-off-by: Zhao Qiang <qiang.zhao@...escale.com>
> > > > > > ---
> > > > > > Changes for v2:
> > > > > >       - no changes
> > > > > > Changes for v3:
> > > > > >       - no changes
> > > > > > Changes for v4:
> > > > > >       - no changes
> > > > > > Changes for v5:
> > > > > >       - no changes
> > > > > > Changes for v6:
> > > > > >       - using genalloc instead rheap to manage QE MURAM
> > > > > >       - remove qe_reset from platform file, using
> > > > > >       - subsys_initcall to call qe_init function.
> > > > > > Changes for v7:
> > > > > >       - move this patch from 3/3 to 2/3
> > > > > >       - convert cpm with genalloc
> > > > > >       - check for gen_pool allocation failure Changes for v8:
> > > > > >       - rebase
> > > > > >       - move BD_SC_* macro instead of copy Changes for v9:
> > > > > >       - doesn't modify CPM, add a new patch to modify.
> > > > > >       - rebase
> > > > > > Changes for v10:
> > > > > >       - rebase
> > > > > > Changes for v11:
> > > > > >       - remove renaming
> > > > > >       - delete removing qe_reset and delete adding qe_init.
> > > > > > Changes for v12:
> > > > > >       - SPI_FSL_CPM depends on QE-MURAM, select QUICC_ENGINE for
> it.
> > > > >
> > > > > Why is the SPI change part of this patch?  Why is it even part
> > > > > of this patchset, rather than an independent patch sent to the
> > > > > SPI list and maintainer?  If it's tied to other changes you're
> > > > > making, explain that.  As is, there is zero mention of the SPI
> > > > > change in the part of the e-mail that will become the git changelog.
> > > > >
> > > > This SPI_FSL_CPM is cpm-spi, it is part of CPM.
> > >
> > > So then why are you selecting QUICC_ENGINE?  And again, what does it
> > > have to do with this patch?
> >
> > Cpm-spi is dependent on qe_muram, if not select it, Cpm-spi will
> > failed to build.
> 
> Why QUICC_ENGINE and not CPM?

QE and CPM use the same muram, and it has been moved to qe_muram from cpm_muram.

> 
> -Scott