linux-kernel - Re: [PATCH V3] pci: exynos: split into two parts such as Synopsys part and Exynos part

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Date:	Thu, 12 Sep 2013 16:15:04 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Kishon Vijay Abraham I' <kishon@...com>
Cc:	'Pratyush Anand' <pratyush.anand@...com>,
	'Bjorn Helgaas' <bhelgaas@...gle.com>,
	linux-pci@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	'Kukjin Kim' <kgene.kim@...sung.com>,
	'Mohit KUMAR' <Mohit.KUMAR@...com>,
	'Arnd Bergmann' <arnd@...db.de>,
	'Sean Cross' <xobs@...agi.com>,
	'Thierry Reding' <thierry.reding@...il.com>,
	'SRIKANTH TUMKUR SHIVANAND' <ts.srikanth@...sung.com>,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	'Jingoo Han' <jg1.han@...sung.com>
Subject: Re: [PATCH V3] pci: exynos: split into two parts such as Synopsys part
 and Exynos part

On Tuesday 23 July 2013 12:30 PM, Kishon Vijay Abraham I wrote:
> >> .
> >> .
> >>>>> +			of_pci_range_to_resource(&range, np, &pp->cfg);
> >>>>> +			pp->config.cfg0_size = resource_size(&pp->cfg)/2;
> >>>>> +			pp->config.cfg1_size = resource_size(&pp->cfg)/2;
> >>>>> +		}
> >>>>> +	}
> >>>>> +
> >>>>> +	pp->dbi_base = devm_ioremap(pp->dev, pp->cfg.start,
> >>>>> +				resource_size(&pp->cfg));
> >>>>
> >>>> Why is configuraion space divided into two?
> >>>
> >>> Sorry, I don't know the exact reason. :(
> >>> Pratyush Anand may know about this.
> >>> Pratyush Anand, could you answer the question?
> >>>
> >>> Also, if you find some problems, please let me know.
> 
> One more query..
> 
> Where is inbound translation configuration done in your driver? how should it
> be done?

Hi Kishon,

Sorry, I cannot understand your question exactly.
However, the following thread would be helpful.

http://www.spinics.net/lists/arm-kernel/msg252078.html
https://lkml.org/lkml/2013/6/17/890

Best regards.
Jingoo Han

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