From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pratyush Anand <pratyush.anand@st.com>
Subject: Re: [PATCH V3] pci: exynos: split into two parts such as Synopsys
 part and Exynos part
Date: Thu, 12 Sep 2013 16:16:02 +0530
Message-ID: <20130912104602.GC5995@pratyush-vbox>
References: <000701ce8741$fe47deb0$fad79c10$@samsung.com>
 <51EE22DF.6090902@ti.com>
 <001301ce8772$522dfc50$f689f4f0$@samsung.com>
 <5231607C.10702@ti.com>
 <003501ceaf87$cda45db0$68ed1910$%han@samsung.com>
 <20130912093018.GA2124@pratyush-vbox>
 <52318CCC.4040604@ti.com>
 <20130912095213.GA5995@pratyush-vbox>
 <5231925B.3030104@ti.com>
 <20130912101803.GB5995@pratyush-vbox>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Return-path: <linux-samsung-soc-owner@vger.kernel.org>
Content-Disposition: inline
In-Reply-To: <20130912101803.GB5995@pratyush-vbox>
Sender: linux-samsung-soc-owner@vger.kernel.org
To: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Jingoo Han <jg1.han@samsung.com>, 'Bjorn Helgaas' <bhelgaas@google.com>, "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>, "linux-samsung-soc@vger.kernel.org" <linux-samsung-soc@vger.kernel.org>, 'Kukjin Kim' <kgene.kim@samsung.com>, Mohit KUMAR DCG <Mohit.KUMAR@st.com>, 'Arnd Bergmann' <arnd@arndb.de>, 'Sean Cross' <xobs@kosagi.com>, 'Thierry Reding' <thierry.reding@gmail.com>, 'SRIKANTH TUMKUR SHIVANAND' <ts.srikanth@samsung.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
List-Id: devicetree@vger.kernel.org

On Thu, Sep 12, 2013 at 03:48:03PM +0530, Pratyush Anand wrote:
> On Thu, Sep 12, 2013 at 06:07:23PM +0800, Kishon Vijay Abraham I wrote:
> > Hi,
> > 
> > On Thursday 12 September 2013 03:22 PM, Pratyush Anand wrote:
> > > Hi Kishon,
> > > 
> > > On Thu, Sep 12, 2013 at 05:43:40PM +0800, Kishon Vijay Abraham I wrote:
> > >> Hi,
> > >>
> > >> On Thursday 12 September 2013 03:00 PM, Pratyush Anand wrote:
> > >>> Hi Jingoo,
> > >>>
> > >>>
> > >>> On Thu, Sep 12, 2013 at 03:15:04PM +0800, Jingoo Han wrote:
> > >>>> On Tuesday 23 July 2013 12:30 PM, Kishon Vijay Abraham I wrote:
> > >>>>>>> .
> > >>>>>>> .
> 
> [...]
> 
> > >> when I do ifconfig eth0 up, I get *r8169 0000:01:00.0 eth0: link up.*
> > >> But I dont receive any packets and ping also fails and the tx and rx packet
> > >> count is also 0. Could it be related to inbound translation?
> > > 
> > > A PCIe analyser log would tell a definite cause. Most likely either
> > > inbound translation is not working or INTx/MSI is not working.
> > 
> > I have enabled only legacy interrupts. Whenever I connect or disconnect
> > ethernet cable I get link up/link down message and also the interrupt count for
> > eth0 increases. So I'm not doubting INTx interrupts as such.

Just a question, what is the MRRS of your RC? if it is 128, can you
try with passing pci=pcie_bus_peer2peer  in your bootargs.

Again, analyser will help a lot in diagnosing such issues.

Regards
Pratyush
> > 
> > btw configuring inbound translation once in dw_pcie_host_init enough is it? I
> > mean we use the same registers for configuring outbound translation also no? So
> > doesn't the inbound configuration gets lost?
> 
> No, you write at the same register, but you program direction as
> inbound. There are different resources for each viewport in inbound
> and outbound direction.
> 
> Regards
> Pratyush
> 
> > 
> > Thanks
> > Kishon