linux-kernel - RE: [PATCH 4/5 v3] Add RapidIO support to powerpc architecture.

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Message-ID: <46B96294322F7D458F9648B60E15112C74D156@zch01exm26.fsl.freescale.net>
Date:	Fri, 27 Jul 2007 17:03:01 +0800
From:	"Zhang Wei-r63237" <Wei.Zhang@...escale.com>
To:	"Kumar Gala" <galak@...nel.crashing.org>
Cc:	<mporter@...nel.crashing.org>, <paulus@...ba.org>,
	<linux-kernel@...r.kernel.org>, <linuxppc-dev@...abs.org>
Subject: RE: [PATCH 4/5 v3] Add RapidIO support to powerpc architecture.

Hi, Kumar, 

> -----Original Message-----
> From: Kumar Gala [mailto:galak@...nel.crashing.org] 
> On Jul 26, 2007, at 3:42 AM, Zhang Wei wrote:
> 
> > This patch adds the RapidIO support to the powerpc architecture.
> > Some files are moved from ppc. OF-tree and OF-device supports are  
> > added.
> > New silicons such as MPC8548, MPC8641 with serial RapidIO  
> > controller are
> > all supported.
> > Memory driver hardware operations are added.
> > Global mport variables are changed to master port private variables.
> > Multi master ports are supported.
> >
> > Signed-off-by: Zhang Wei <wei.zhang@...escale.com>
> > ---
> >  arch/powerpc/Kconfig          |    8 +
> >  arch/powerpc/kernel/Makefile  |    1 +
> >  arch/powerpc/kernel/rio.c     |   64 ++
> >  arch/powerpc/sysdev/Makefile  |    1 +
> >  arch/powerpc/sysdev/fsl_rio.c | 1455 
> ++++++++++++++++++++++++++++++ 
> > +++++++++++
> 
> how much of this moved from ppc85xx_rio.c?

>From the code size, 2/3 are moved from pcc85xx_rio.c with clean up, 1/3
are new coding.

> 
> >  arch/powerpc/sysdev/fsl_rio.h |   20 +
> >  6 files changed, 1549 insertions(+), 0 deletions(-)
> >  create mode 100644 arch/powerpc/kernel/rio.c
> >  create mode 100644 arch/powerpc/sysdev/fsl_rio.c
> >  create mode 100644 arch/powerpc/sysdev/fsl_rio.h
> >
> > diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> > index 00099ef..45f32f1 100644
> > --- a/arch/powerpc/Kconfig
> > +++ b/arch/powerpc/Kconfig
> > @@ -492,6 +492,14 @@ source "drivers/pci/Kconfig"
> >
> >  source "drivers/pcmcia/Kconfig"
> >
> > +config RAPIDIO
> > +	bool "RapidIO support" if MPC8540 || MPC8560 || MPC8641 
> || MPC8548
> > +	help
> > +	  If you say Y here, the kernel will include drivers and
> > +	  infrastructure code to support RapidIO interconnect devices.
> 
> why not make this depend on something like HAS_RAPIDIO and let the  
> boards select HAS_RAPIDIO if they have it

It's more clear, We can know how many and which processors support
RapidIO. :-)

> 
> > +
> > +source "drivers/rapidio/Kconfig"
> > +
> >  source "drivers/pci/hotplug/Kconfig"
> >
> >  endmenu
> > diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/ 
> > Makefile
> > index 42c42ec..02d4100 100644
> > --- a/arch/powerpc/kernel/Makefile
> > +++ b/arch/powerpc/kernel/Makefile
> > @@ -70,6 +70,7 @@ pci64-$(CONFIG_PPC64)		+= 
> pci_64.o pci_dn.o isa- 
> > bridge.o
> >  pci32-$(CONFIG_PPC32)		:= pci_32.o
> >  obj-$(CONFIG_PCI)		+= $(pci64-y) $(pci32-y) pci-common.o
> >  obj-$(CONFIG_PCI_MSI)		+= msi.o
> > +obj-$(CONFIG_RAPIDIO)		+= rio.o
> 
> should probably live in sysdev/rio.c

This just keep the same position of ppc arch.

Thanks!
-zw
-
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