linux-kernel - Re: The Linux Staging tree, what it is and is not.

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Message-ID: <49C7505B.2010205@systec-electronic.com>
Date:	Mon, 23 Mar 2009 10:03:23 +0100
From:	Daniel Krüger 
	<daniel.krueger@...tec-electronic.com>
To:	david@...g.hm
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Robert Schwebel <r.schwebel@...gutronix.de>,
	Greg KH <greg@...ah.com>, linux-kernel@...r.kernel.org,
	Michael Olbrich <mol@...gutronix.de>,
	Wolfram Sang <wsa@...gutronix.de>,
	Marc Kleine-Budde <mkl@...gutronix.de>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: The Linux Staging tree, what it is and is not.

david@...g.hm schrieb:
> On Fri, 20 Mar 2009, Alan Cox wrote:
> 
>>> information of what to copy to where comes from the object dictionary.
>>> But it is possible to extract this information from the objdict and pass
>>> it via generic structures (e.g. something like IO vectors) to the PDO
>>> module in kernel. The information flow of the configuration data is
>>> one-way only, from userspace to kernel. This is what I plan to implement
>>> in openPOWERLINK, because the copy information can also be passed to a
>>> special hardware like a DMA controller.
>>
>> Ok so your hardware in fact really is oriented around an mmap type
>> interface ?
> 
> what I understand from this thread is that the hardware is a standard 
> ethernet card.

It may be a standard Ethernet controller. But it could also be a 
controller with a special hardware acceleration.

cu,
   Daniel

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