linux-kernel - Re: mmaping an IO port device

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Message-ID: <47608538.6030301@magtech.com.au>
Date:	Thu, 13 Dec 2007 12:04:56 +1100
From:	Aras Vaichas <arasv@...tech.com.au>
To:	linux-kernel@...r.kernel.org
Subject: Re: mmaping an IO port device

Aras Vaichas wrote:
> Hi,
>
> Can I implement mmap with an io port connected device on an x86 based 
> CPU?
>
I'll just add one more bit of information which might effect the 
situation. The CPU I am using is an Elan SC520 microcontroller.

It seems that this CPU is able remap the General Purpose ports (IO 
ports) into the lower 1GB of memory space.

I will investigate.

If anyone knows anything about doing this, please speak up. This is a 
legacy CPU in our product range, and I don't have much experience with it.

Aras


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