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Date: Sat, 10 Jul 2004 11:16:47 -0400
From: Brian Fundakowski Feldman <green@freebsd.org>
To: Poul-Henning Kamp <phk@phk.freebsd.dk>
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cc: arch@freebsd.org
Subject: Re: userland firmware loader?
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On Sat, Jul 10, 2004 at 10:38:36AM +0200, Poul-Henning Kamp wrote:
> In message <20040709232355.GB1626@green.homeunix.org>, Brian Fundakowski Feldma
> n writes:
> 
> >I'm writing a driver that uses a 100KB firmware file and could need to
> >read it again, after initialization, to reset the device (or to load
> >more).  Since this device is primarily found in CardBus form, I think
> >it makes a lot of sense to be able to get the firmware file at any time
> >but without specific user intervention.
> >
> >Is this something devd should be doing? 
> 
> I would advocate a generic interface for retrieving firmware from userland.

What do you think about using the normal devctl_notify(9) for pushing
out firmware requests, and having a new device method that receives just
a user data pointer and length for it to copyin(9)?  It wouldn't be a
very symmetrical API, but it seems like a way that might fit it into the
current structure the easiest, devd and devctl and newbus.

-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green@FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\