From: "Jaursch, Bill" <bjaursch@aeshen.com>
To: "Stefan Richter" <stefanr@s5r6.in-berlin.de>
Cc: "Adrian Bunk" <bunk@kernel.org>,
"Leon Woestenberg" <leon.woestenberg@gmail.com>,
<linux-kernel@vger.kernel.org>
Subject: RE: FW: Guidance on resources for User Space Device Drivers on 2.6 kernel
Date: Thu, 6 Dec 2007 14:33:45 -0500 [thread overview]
Message-ID: <32A49E5BEBD67A4F877032926EFAA4D2092CCC84@ms08.mse3.exchange.ms> (raw)
In-Reply-To: <47584D8C.4090000@s5r6.in-berlin.de>
Your point is well taken.
I will probably end of with a system daemon (User Space), but pass
communication via a Kernel module (Kernel Space). The application can
call the kernel module, passing data back to the daemon (User Space).
Once I have hw, I may just use the kernel module.
Thanks again.
-----Original Message-----
From: Stefan Richter [mailto:stefanr@s5r6.in-berlin.de]
Sent: Thursday, December 06, 2007 11:29 AM
To: Jaursch, Bill
Cc: Adrian Bunk; Leon Woestenberg; linux-kernel@vger.kernel.org
Subject: Re: FW: Guidance on resources for User Space Device Drivers on
2.6 kernel
Jaursch, Bill wrote:
> The reason to even consider a driver for this "Software only" driver
> was to start the work of writing a kernel space driver (loadable
> module). So more specifically, I wanted to know if there is a way
> to use calls to the kernel to access a loadable module that is
> running code in User Space (to take advantage of libraries, tools,
> prevention of kernel crashes, etc.).
Since you plan to use this for a PCI device eventually, it sounds like
UIO would be of help.
> I am running 2.6.20, so many of the new User Space Driver features
> don't appear to be available (UIO, User Space API, etc.). And at
> this point I don't expect my end users to upgrade to a newer kernel.
Perhaps you can backport UIO or can get someone to do it for you.
--
Stefan Richter
-=====-=-=== ==-- --==-
http://arcgraph.de/sr/
next prev parent reply other threads:[~2007-12-06 19:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-05 6:29 FW: Guidance on resources for User Space Device Drivers on 2.6 kernel Jaursch, Bill
2007-12-06 11:49 ` Adrian Bunk
2007-12-06 12:38 ` Stefan Richter
[not found] ` <32A49E5BEBD67A4F877032926EFAA4D2092CCABF@ms08.mse3.exchange.ms>
2007-12-06 19:29 ` Stefan Richter
2007-12-06 19:33 ` Jaursch, Bill [this message]
2007-12-06 12:21 ` Leon Woestenberg
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