linux-kernel - Re: [PATCH 0/3] Yet another stab at a fpga framework

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Date:	Mon, 8 Sep 2014 16:00:54 -0500
From:	atull <atull@...nsource.altera.com>
To:	Pavel Machek <pavel@...x.de>
CC:	<gregkh@...uxfoundation.org>, <jgunthorpe@...idianresearch.com>,
	<hpa@...or.com>, <monstr@...str.eu>, <michal.simek@...inx.com>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<pantelis.antoniou@...sulko.com>, <robh+dt@...nel.org>,
	<grant.likely@...aro.org>, <broonie@...nel.org>,
	<philip@...ister.org>, <rubini@...dd.com>,
	<s.trumtrar@...gutronix.de>, <jason@...edaemon.net>,
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	<m.chehab@...sung.com>, <davidb@...eaurora.org>, <rob@...dley.net>,
	<davem@...emloft.net>, <cesarb@...arb.net>,
	<sameo@...ux.intel.com>, <akpm@...ux-foundation.org>,
	<linus.walleij@...aro.org>, <delicious.quinoa@...il.com>,
	<dinguyen@...nsource.altera.com>, <yvanderv@...nsource.altera.com>
Subject: Re: [PATCH 0/3] Yet another stab at a fpga framework

On Sun, 7 Sep 2014, Pavel Machek wrote:

> Hi!
> 
> > [resend with fixed email settings]
> > 
> > The idea of the framework is to provide consistent ways of
> > programming raw images into FPGA's.
> > 
> > Programming from device tree overlays is supported.
> > 
> > The core (fpga-mgr.c) does not include a userspace interface
> > and just exports kernel functions.
> > 
> > This approach separates the core from the interfaces.
> > 
> > Each interface can be enabled or disabled in the defconfig.
> > In some production contexts, interfaces that might be used
> > during development can be disabled.
> > 
> > The core exports kernel functions to:
> >   * write the fpga from a buffer or using the firmware layer
> >   * get fpga status
> >   * find a particular fpga manager from a device tree phandle
> >   * register/unregister lower level fpga drivers.
> > 
> > The bus allows us to:
> >   * program fpga from a device tree overlay using firmware.
> >   * automatically reload firmware and reprogram fpga during resume.
> > 
> > The sysfs interface:
> >   * read only, get the name and status of fpga manager.
> > 
> > I have a configfs interface patch which I haven't included,
> > adds configfs as a separate file.
> 
> Thanks for the patches... is there new version? Is that corresponding
> socfpga code?
> 
> I'd like to configure fpga with .rbf file on board similar to SocKit.
> 
> Thanks,
> 								Pavel

Yes, hopefully next week.

Regards,
Alan


> 
> -- 
> (english) http://www.livejournal.com/~pavelmachek
> (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
> 
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